╭ ui.zig ───────────────────────────────────────────────────────╮ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ ╰───────────────────────────────────────────────────────────────╯
🬐 🬠 🬞🬂🬏 🬟 🬑 🬟 🬑 ╭dec6de68..╮ dec6de68.. see-em: 🬋🬋🬋 🬋🬋🬋 🬋 🬋 │files │ commits refs discuss issues new login 🬐 🬠 🬐 🬠 🬑 🬟 🬰 ╰──────────╯ (628) user
╭────╮ ╭ clone ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ╮ │http│ ssh │ │ ╰────╯ ╰ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ╯
.. embed/ event/ test/ ui/ command.zig diff3.zig event.zig find.zig fork.zig lib.zig main.zig main_wasm.zig markdown.zig patch.zig progress.zig push.zig search.zig search_commit.zig search_thread.zig serve.zig serve_common.zig serve_http.zig serve_ssh.zig serve_ssh_protocol.zig test.zig testnet.zig try.zig ╭─────────────────────────────────╮ │ui.zig │ ╰─────────────────────────────────╯ web.zig
1 const std = @import("std"); 2 const builtin = @import("builtin"); 3 const xit = @import("xit"); 4 const rp = xit.repo; 5 const rf = xit.ref; 6 const hash = xit.hash; 7 const xitui = xit.xitui; 8 const term = xitui.terminal; 9 const wgt = xitui.widget; 10 const layout = xitui.layout; 11 const Key = xitui.input.Key; 12 const Grid = xitui.grid.Grid; 13 const Focus = xitui.focus.Focus; 14 // the random page art and the not-found page's fixed art. wasm receives its art 15 // from the server, so it links none. 16 const ansi_art = if (builtin.cpu.arch == .wasm32) struct { 17 const art: []const []const u8 = &.{}; 18 const not_found: []const u8 = ""; 19 } else @import("ansi_art"); 20 const evt = @import("./event.zig"); 21 const inp = @import("./ui/input.zig"); 22 23 pub const Home = @import("./ui/Home.zig"); 24 pub const User = @import("./ui/User.zig"); 25 pub const Repo = @import("./ui/Repo.zig"); 26 pub const Fork = @import("./ui/Fork.zig"); 27 pub const Title = @import("./ui/Title.zig"); 28 pub const SubTitle = @import("./ui/SubTitle.zig"); 29 pub const Quit = @import("./ui/Quit.zig"); 30 pub const Unauthorized = @import("./ui/Unauthorized.zig"); 31 pub const NotFound = @import("./ui/NotFound.zig"); 32 pub const NewRepo = @import("./ui/NewRepo.zig"); 33 pub const NewUser = @import("./ui/NewUser.zig"); 34 pub const UserLogout = @import("./ui/UserLogout.zig"); 35 pub const UserLogin = @import("./ui/UserLogin.zig"); 36 pub const widget = @import("./ui/widget.zig"); 37 pub const Widget = widget.Widget; 38 39 pub const clipped_bottom_label_max_len = 10 * 4; 40 41 pub fn clippedBottomLabel(buffer: []u8, text: []const u8) ![]const u8 { 42 var iter = (try std.unicode.Utf8View.init(text)).iterator(); 43 var end: usize = 0; 44 var clipped_end: usize = 0; 45 for (0..10) |i| { 46 const codepoint = iter.nextCodepointSlice() orelse break; 47 end += codepoint.len; 48 if (i == 7) clipped_end = end; 49 } 50 const clipped = iter.nextCodepointSlice() != null; 51 return try std.fmt.bufPrint(buffer, "{s}{s}", .{ text[0..if (clipped) clipped_end else end], if (clipped) ".." else "" }); 52 } 53 54 pub const detail_preview_lines = 50; 55 56 pub fn detailPreviewEnd(text: []const u8) ?usize { 57 var lines: usize = 1; 58 for (text, 0..) |byte, i| { 59 if (byte != '\n') continue; 60 if (lines == detail_preview_lines and i + 1 < text.len) return i; 61 lines += 1; 62 } 63 return null; 64 } 65 66 pub const PageKind = enum { 67 home, 68 user, 69 repo, 70 fork, 71 not_found, 72 }; 73 74 pub const Page = union(PageKind) { 75 home: Home, 76 user: User, 77 repo: Repo, 78 fork: Fork, 79 not_found, 80 81 pub fn init(arena: *std.heap.ArenaAllocator, session: *Session, route: RoutablePage) !Page { 82 // the repo page can build without a moment in local mode; the home and 83 // user pages always read from the admin db. 84 return switch (route.parent()) { 85 .home => .{ .home = try Home.init(arena, session, session.haxy_moment orelse return error.NoMoment, switch (route) { 86 .home_users => |u| u, 87 else => .{}, 88 }) }, 89 .user => blk: { 90 const haxy_moment = session.haxy_moment orelse return error.NoMoment; 91 break :blk switch (route) { 92 .user_repos => |u| .{ .user = try User.init(arena, session, haxy_moment, u.name, u.start, u.search.slice(), 0) }, 93 .user_forks => |u| .{ .user = try User.init(arena, session, haxy_moment, u.name, 0, "", u.start) }, 94 .user_new_repo, .user_new_user, .user_user => |name| .{ .user = try User.init(arena, session, haxy_moment, name, 0, "", 0) }, 95 else => return error.UnexpectedRoute, 96 }; 97 }, 98 .repo => switch (route) { 99 .repo_files, .repo_commits, .repo_diff, .repo_refs, .repo_issues, .repo_patches, .repo_discussions, .repo_events, .repo_undo, .repo_new_repo, .repo_new_user, .repo_user => .{ .repo = try Repo.init(arena, session, route) }, 100 else => return error.UnexpectedRoute, 101 }, 102 .fork => switch (route) { 103 .fork_patch, .fork_diff, .fork_files, .fork_commits, .fork_new_repo, .fork_new_user, .fork_user => .{ .fork = try Fork.init(arena, session, route) }, 104 else => return error.UnexpectedRoute, 105 }, 106 .not_found => .not_found, 107 }; 108 } 109 }; 110 111 // what the server hands to the client (and what main_wasm parses on _start). 112 // keeps Page free of any per-request session state. 113 pub const Snapshot = struct { 114 page: Page, 115 session: Session.Data = .{}, 116 }; 117 118 // a top-level "page" the user can navigate to. the user_* variants are the 119 // tabs of a user page; they each carry the user's name and all map to the 120 // .user parent page, so switching between them stays on that page (and just 121 // updates the url) rather than navigating away. 122 pub const RoutablePage = union(enum) { 123 home_about, 124 home_users: HomeUsersRoute, 125 home_new_repo, 126 home_new_user, 127 home_user, 128 user_repos: struct { 129 name: Array(evt.User.name_max_len), 130 start: usize = 0, 131 // the url-encoded name prefix the list is narrowed to ("" = none) 132 search: Array(search_route_max_len) = .{}, 133 }, 134 user_forks: struct { name: Array(evt.User.name_max_len), start: usize = 0 }, 135 user_new_repo: Array(evt.User.name_max_len), 136 user_new_user: Array(evt.User.name_max_len), 137 user_user: Array(evt.User.name_max_len), 138 repo_files: RepoFilesRoute, 139 repo_commits: RepoCommitsRoute, 140 repo_diff: RepoDiffRoute, 141 repo_refs: struct { 142 name: Array(repo_route_max_len), 143 kind: RefKind = .branch, 144 // the url-encoded ref name `kind`'s column windows from ("" = the 145 // first window; the other column always shows its first window). 146 from: Array(ref_route_max_len) = .{}, 147 // the url-encoded prefix both columns are narrowed to ("" = none) 148 search: Array(search_route_max_len) = .{}, 149 }, 150 repo_issues: struct { 151 name: Array(repo_route_max_len), 152 // the label the list is filtered to, url-encoded ("" = unfiltered). 153 label: Array(issue_label_route_max_len) = .{}, 154 // the query the list is filtered to, url-encoded ("" = unfiltered). 155 search: Array(search_route_max_len) = .{}, 156 // the issue the route names: the list's window root, or the issue the 157 // edit/description/resolve view shows. 158 selected: Array(evt.event_id_size * 2) = .{}, 159 // the resolve view's comma-separated list of fields prefilled from 160 // their side of the conflict. 161 theirs: Array(theirs_route_max_len) = .{}, 162 // the view the url names; a route with `selected` derives its view 163 // from that issue's status instead. 164 view: IssuesView = .open, 165 // the selected issue's comment window (0 = the first window). 166 comments_start: usize = 0, 167 // the comment shown in the detail pane (empty = the issue thread). 168 comment: Array(evt.event_id_size * 2) = .{}, 169 }, 170 repo_patches: struct { 171 name: Array(repo_route_max_len), 172 label: Array(patch_label_route_max_len) = .{}, 173 search: Array(search_route_max_len) = .{}, 174 selected: Array(evt.event_id_size * 2) = .{}, 175 theirs: Array(theirs_route_max_len) = .{}, 176 view: PatchesView = .open, 177 comments_start: usize = 0, 178 comment: Array(evt.event_id_size * 2) = .{}, 179 }, 180 repo_discussions: struct { 181 name: Array(repo_route_max_len), 182 label: Array(discussion_label_route_max_len) = .{}, 183 search: Array(search_route_max_len) = .{}, 184 selected: Array(evt.event_id_size * 2) = .{}, 185 view: DiscussionsView = .recent, 186 comments_start: usize = 0, 187 comment: Array(evt.event_id_size * 2) = .{}, 188 }, 189 repo_events: RepoEventsRoute, 190 repo_undo: RepoUndoRoute, 191 repo_new_repo: Array(repo_route_max_len), 192 repo_new_user: Array(repo_route_max_len), 193 repo_user: Array(repo_route_max_len), 194 fork_patch: ForkRoute, 195 fork_diff: ForkDiffRoute, 196 fork_files: ForkFilesRoute, 197 fork_commits: ForkCommitsRoute, 198 fork_new_repo: ForkRoute, 199 fork_new_user: ForkRoute, 200 fork_user: ForkRoute, 201 not_found, 202 203 pub const default: RoutablePage = .home_about; 204 205 pub const RefKind = enum { branch, tag }; 206 207 pub const IssuesView = enum { open, closed, labels, new, edit, description, new_comment, edit_comment, remove, conflicts, resolve }; 208 209 pub const PatchesView = enum { open, closed, merged, labels, new, drafts, edit, publish, merge, description, new_comment, edit_comment, remove, conflicts, resolve }; 210 211 pub const DiscussionsView = enum { recent, labels, new, edit, description, new_comment, edit_comment, remove }; 212 213 pub const EventsView = enum { active, removed }; 214 215 pub const RefOrOid = enum { 216 branch, 217 tag, 218 object, 219 }; 220 221 // the "key:value" segments of a url tail, collected in any order 222 const Params = struct { 223 const ParamKey = enum { start, line, branch, tag, label, object, base, patchrev, theirs, find, search, from, moment, merge }; 224 225 // a branch:/tag:/object: param; the value stays url-encoded 226 const RefParam = struct { kind: RefOrOid, value: []const u8 }; 227 228 values: std.enums.EnumArray(ParamKey, ?[]const u8) = .initFill(null), 229 230 // consume the leading "key:value" segments, stopping at the first 231 // segment that isn't one 232 fn scanPairs(self: *Params, segments: *std.mem.SplitIterator(u8, .scalar)) error{BadUrl}!void { 233 while (segments.peek()) |seg| { 234 const colon = std.mem.indexOfScalar(u8, seg, ':') orelse return; 235 const key = std.meta.stringToEnum(ParamKey, seg[0..colon]) orelse return; 236 const value = seg[colon + 1 ..]; 237 if (value.len == 0) return error.BadUrl; 238 if (self.values.get(key) != null) return error.BadUrl; 239 self.values.set(key, value); 240 _ = segments.next(); 241 } 242 } 243 244 // consume every remaining segment: pairs plus at most one bare word, 245 // which is returned 246 fn scanTail(self: *Params, segments: *std.mem.SplitIterator(u8, .scalar)) error{BadUrl}!?[]const u8 { 247 var word: ?[]const u8 = null; 248 while (true) { 249 try self.scanPairs(segments); 250 const seg = segments.next() orelse return word; 251 if (seg.len == 0 or word != null) return error.BadUrl; 252 word = seg; 253 } 254 } 255 256 // true when every set param is one of `allowed` 257 fn only(self: Params, allowed: []const ParamKey) bool { 258 for (std.enums.values(ParamKey)) |key| { 259 if (self.values.get(key) == null) continue; 260 if (std.mem.indexOfScalar(ParamKey, allowed, key) == null) return false; 261 } 262 return true; 263 } 264 265 // the "start:<n>" window param (0 when absent), null when malformed 266 fn start(self: Params) ?usize { 267 const value = self.values.get(.start) orelse return 0; 268 return std.fmt.parseInt(usize, value, 10) catch null; 269 } 270 271 // the "moment:<n>" event filter, null when absent 272 fn moment(self: Params) error{BadUrl}!?u64 { 273 const value = self.values.get(.moment) orelse return null; 274 return std.fmt.parseInt(u64, value, 10) catch error.BadUrl; 275 } 276 277 // the "line:<n>" first-line param (0 when absent), null when malformed 278 fn line(self: Params) ?usize { 279 const value = self.values.get(.line) orelse return 0; 280 return std.fmt.parseInt(usize, value, 10) catch null; 281 } 282 283 // the single branch:/tag:/object: param, null when none is set 284 fn ref(self: Params) error{BadUrl}!?RefParam { 285 var result: ?RefParam = null; 286 inline for (@typeInfo(RefOrOid).@"enum".fields) |field| { 287 if (self.values.get(@field(ParamKey, field.name))) |value| { 288 if (result != null) return error.BadUrl; 289 result = .{ .kind = @field(RefOrOid, field.name), .value = value }; 290 } 291 } 292 return result; 293 } 294 }; 295 296 pub const HomeUsersRoute = struct { 297 start: usize = 0, 298 // the url-encoded name prefix the list is narrowed to ("" = none) 299 search: Array(search_route_max_len) = .{}, 300 }; 301 302 const user_segment = "/user/"; 303 const repo_segment = "/repo/"; 304 const fork_segment = "/fork/"; 305 const files_seg = "files"; 306 const commits_seg = "commits"; 307 // ends a commits route naming its commit's full message 308 const message_seg = "message"; 309 // the `Params` key spellings the url emitters use 310 const label_filter_seg = @tagName(Params.ParamKey.label) ++ ":"; 311 const start_seg = @tagName(Params.ParamKey.start) ++ ":"; 312 const line_seg = @tagName(Params.ParamKey.line) ++ ":"; 313 const find_seg = @tagName(Params.ParamKey.find) ++ ":"; 314 const search_seg = @tagName(Params.ParamKey.search) ++ ":"; 315 const from_seg = @tagName(Params.ParamKey.from) ++ ":"; 316 const base_seg = @tagName(Params.ParamKey.base) ++ ":"; 317 const merge_seg = @tagName(Params.ParamKey.merge) ++ ":"; 318 const theirs_seg = @tagName(Params.ParamKey.theirs) ++ ":"; 319 const issue_seg = "issue:"; 320 const patch_seg = "patch:"; 321 const discuss_seg = "discuss:"; 322 const comment_seg = "comment:"; 323 // marks a files or diff route's trailing path: the value is the raw 324 // remainder of the url, so it must come last 325 const path_seg = "path:"; 326 327 // a repo route is "username/reponame", optionally followed by the files 328 // tab's "/files/<refkind>:<refvalue>[/line:<n>][/path:<dir>]"; the bare 329 // pair means the default branch's files root. a local session's routes 330 // elide the identity: "" at the bare root, else starting at the tail's "/". 331 pub const repo_route_max_len = 1024; 332 pub const repo_identity_max_len = evt.User.name_max_len + 1 + evt.Repo.name_max_len; 333 334 // true when a repo route's stored string elides its identity (local mode). 335 // unambiguous because a full string always starts with its owner segment. 336 fn identityElided(s: []const u8) bool { 337 return s.len == 0 or s[0] == '/'; 338 } 339 340 // a url-encoded label can grow to three bytes per source byte. 341 pub const issue_label_route_max_len = evt.Issue.label_max_len * 3; 342 pub const patch_label_route_max_len = evt.Patch.label_max_len * 3; 343 pub const discussion_label_route_max_len = evt.Discussion.label_max_len * 3; 344 345 // caps the resolve view's theirs: field list (a longer one doesn't route). 346 pub const theirs_route_max_len = 512; 347 348 // caps a url-encoded ref name in a route (a longer name doesn't route). 349 pub const ref_route_max_len = 512; 350 351 // caps the files tab's url-encoded search term. 352 pub const find_route_max_len = 100 * 3; 353 354 // caps the commits tab's url-encoded search query. 355 pub const search_route_max_len = 100 * 3; 356 357 // the identity stored by every repo route. Local routes elide it. 358 pub const RepoIdentity = struct { 359 identity: []const u8, // "owner/name" 360 owner: []const u8, 361 name: []const u8, 362 363 pub fn parse(s: []const u8) ?RepoIdentity { 364 var result: RepoIdentity = .{ 365 .identity = "", 366 .owner = "", 367 .name = "", 368 }; 369 if (identityElided(s)) { 370 return result; 371 } else { 372 var id_segments = std.mem.splitScalar(u8, s, '/'); 373 const owner = id_segments.next() orelse return null; 374 const name = id_segments.next() orelse return null; 375 if (owner.len == 0 or name.len == 0) return null; 376 result.identity = s[0 .. owner.len + 1 + name.len]; 377 result.owner = owner; 378 result.name = name; 379 } 380 return result; 381 } 382 }; 383 384 pub const RepoFilesRoute = struct { 385 name: Array(repo_identity_max_len), 386 ref_kind: ?RefOrOid = null, 387 ref_value: Array(ref_route_max_len) = .{}, 388 patchrev_id: Array(evt.event_id_size * 2) = .{}, 389 // the url-encoded search term ("" = the plain directory listing). with 390 // one set, `path` names the selected result rather than a directory. 391 find: Array(find_route_max_len) = .{}, 392 path: Array(repo_route_max_len) = .{}, 393 // the selected file's first visible line (1-based; 0 = unset). 394 line: usize = 0, 395 }; 396 397 pub const RepoDiffRoute = struct { 398 name: Array(repo_identity_max_len), 399 ref_or_oid: ?RefOrOid = null, 400 value: Array(ref_route_max_len) = .{}, 401 base_oid: Array(ref_route_max_len) = .{}, 402 patchrev_id: Array(evt.event_id_size * 2) = .{}, 403 start: usize = 0, 404 path: Array(repo_route_max_len) = .{}, 405 }; 406 407 pub const RepoCommitsRoute = struct { 408 name: Array(repo_identity_max_len), 409 ref_or_oid: ?RefOrOid = null, 410 value: Array(ref_route_max_len) = .{}, 411 base_oid: Array(ref_route_max_len) = .{}, 412 // the url-encoded query this page holds the results of ("" = the plain 413 // log). only a branch or tag can carry one. 414 search: Array(search_route_max_len) = .{}, 415 // the commit the list starts at ("" = the ref's own commit). 416 from: Array(ref_route_max_len) = .{}, 417 // a merge commit whose brought-in commits the page lists, resolved to an 418 // object and base on load. set alone. 419 merge: Array(ref_route_max_len) = .{}, 420 // the pane shows the whole message of the commit the log walks from. 421 message: bool = false, 422 }; 423 424 pub const RepoUndoRoute = struct { 425 name: Array(repo_identity_max_len), 426 index: ?u64 = null, 427 // the clear-history confirmation page, which has no selected entry 428 clear: bool = false, 429 }; 430 431 pub fn repoUndoRoute(identity: []const u8, index: ?u64) ?RoutablePage { 432 return .{ .repo_undo = .{ .name = Array(repo_identity_max_len).from(identity) orelse return null, .index = index } }; 433 } 434 435 pub fn repoUndoClearRoute(identity: []const u8) ?RoutablePage { 436 return .{ .repo_undo = .{ .name = Array(repo_identity_max_len).from(identity) orelse return null, .clear = true } }; 437 } 438 439 pub const RepoEventsRoute = struct { 440 name: Array(repo_identity_max_len), 441 view: EventsView = .active, 442 kind: ?evt.EventKind = null, 443 selected: Array(evt.event_id_size * 2) = .{}, 444 // a transaction's index in the repo history, limiting the list to the 445 // events it wrote. the page reads that transaction's own state 446 moment: ?u64 = null, 447 }; 448 449 pub const ForkRoute = struct { 450 name: Array(repo_identity_max_len), 451 id: Array(evt.event_id_size * 2), 452 }; 453 454 pub const ForkFilesRoute = struct { 455 fork: ForkRoute, 456 oid: Array(ref_route_max_len) = .{}, 457 find: Array(find_route_max_len) = .{}, 458 path: Array(repo_route_max_len) = .{}, 459 line: usize = 0, 460 }; 461 462 pub const ForkCommitsRoute = struct { 463 fork: ForkRoute, 464 oid: Array(ref_route_max_len) = .{}, 465 message: bool = false, 466 }; 467 468 pub const ForkDiffRoute = struct { 469 fork: ForkRoute, 470 // one commit's diff against `base_oid`, or the whole patch when unset 471 oid: Array(ref_route_max_len) = .{}, 472 base_oid: Array(ref_route_max_len) = .{}, 473 start: usize = 0, 474 path: Array(repo_route_max_len) = .{}, 475 }; 476 477 // where the shared files and commits views are mounted. fork routes always 478 // read their implicit `patch` branch unless they name an object directly. 479 pub const RepoLocation = union(enum) { 480 repo: []const u8, 481 fork: struct { 482 identity: []const u8, 483 id: []const u8, 484 }, 485 486 pub fn dupe(self: RepoLocation, allocator: std.mem.Allocator) !RepoLocation { 487 return switch (self) { 488 .repo => |identity_value| .{ .repo = try allocator.dupe(u8, identity_value) }, 489 .fork => |f| .{ .fork = .{ 490 .identity = try allocator.dupe(u8, f.identity), 491 .id = try allocator.dupe(u8, f.id), 492 } }, 493 }; 494 } 495 496 pub fn filesRoute(self: RepoLocation, ref_or_oid: RefOrOid, value: []const u8, path: []const u8, line: usize) ?RoutablePage { 497 return switch (self) { 498 .repo => |repo_identity| repoFilesRoute(repo_identity, ref_or_oid, value, path, line), 499 .fork => |f| if (ref_or_oid == .branch and std.mem.eql(u8, value, "patch")) 500 forkFilesRoute(f.identity, f.id, "", path, line) 501 else if (ref_or_oid == .object) 502 forkFilesRoute(f.identity, f.id, value, path, line) 503 else 504 null, 505 }; 506 } 507 508 pub fn commitsRoute(self: RepoLocation, ref_or_oid: ?RefOrOid, value: []const u8, base_oid: []const u8) ?RoutablePage { 509 return switch (self) { 510 .repo => |repo_identity| repoCommitsRoute(repo_identity, ref_or_oid, value, base_oid), 511 .fork => |f| if (ref_or_oid == null or (ref_or_oid == .branch and std.mem.eql(u8, value, "patch"))) 512 forkCommitsRoute(f.identity, f.id, "") 513 else if (ref_or_oid == .object) 514 forkCommitsRoute(f.identity, f.id, value) 515 else 516 null, 517 }; 518 } 519 520 // commit `oid`'s diff against `base_oid` (all zeros for a root commit) 521 pub fn commitDiffRoute(self: RepoLocation, oid: []const u8, base_oid: []const u8) ?RoutablePage { 522 return switch (self) { 523 .repo => |repo_identity| repoDiffRoute(repo_identity, .object, oid, 0, "", base_oid), 524 .fork => |f| forkDiffRoute(f.identity, f.id, oid, base_oid, 0, ""), 525 }; 526 } 527 528 // fork commits routes carry no base, so only a repo can list a merge's commits 529 pub fn commitsMergeRoute(self: RepoLocation, oid: []const u8) ?RoutablePage { 530 return switch (self) { 531 .repo => |repo_identity| repoCommitsMergeRoute(repo_identity, oid), 532 .fork => null, 533 }; 534 } 535 536 pub fn commitMessageRoute(self: RepoLocation, ref_or_oid: RefOrOid, value: []const u8, base_oid: []const u8) ?RoutablePage { 537 return switch (self) { 538 .repo => |repo_identity| repoCommitMessageRoute(repo_identity, ref_or_oid, value, base_oid), 539 .fork => |f| if (ref_or_oid == .object) forkCommitMessageRoute(f.identity, f.id, value) else null, 540 }; 541 } 542 }; 543 544 fn initForkRoute(identity: []const u8, id: []const u8) ?ForkRoute { 545 if (id.len != evt.event_id_size * 2) return null; 546 return .{ 547 .name = Array(repo_identity_max_len).from(identity) orelse return null, 548 .id = Array(evt.event_id_size * 2).from(id) orelse return null, 549 }; 550 } 551 552 pub fn forkPatchRoute(identity: []const u8, id: []const u8) ?RoutablePage { 553 return .{ .fork_patch = initForkRoute(identity, id) orelse return null }; 554 } 555 556 // the whole patch's diff when `oid` is "", else that commit's against `base_oid` 557 pub fn forkDiffRoute(identity: []const u8, id: []const u8, oid: []const u8, base_oid: []const u8, start: usize, path: []const u8) ?RoutablePage { 558 if ((oid.len == 0) != (base_oid.len == 0)) return null; 559 return .{ .fork_diff = .{ 560 .fork = initForkRoute(identity, id) orelse return null, 561 .oid = Array(ref_route_max_len).from(oid) orelse return null, 562 .base_oid = Array(ref_route_max_len).from(base_oid) orelse return null, 563 .start = start, 564 .path = Array(repo_route_max_len).from(path) orelse return null, 565 } }; 566 } 567 568 pub fn forkFilesRoute(identity: []const u8, id: []const u8, oid: []const u8, path: []const u8, line: usize) ?RoutablePage { 569 return .{ .fork_files = .{ 570 .fork = initForkRoute(identity, id) orelse return null, 571 .oid = Array(ref_route_max_len).from(oid) orelse return null, 572 .path = Array(repo_route_max_len).from(path) orelse return null, 573 .line = line, 574 } }; 575 } 576 577 pub fn forkCommitsRoute(identity: []const u8, id: []const u8, oid: []const u8) ?RoutablePage { 578 return .{ .fork_commits = .{ 579 .fork = initForkRoute(identity, id) orelse return null, 580 .oid = Array(ref_route_max_len).from(oid) orelse return null, 581 } }; 582 } 583 584 pub fn forkCommitMessageRoute(identity: []const u8, id: []const u8, oid: []const u8) ?RoutablePage { 585 if (oid.len == 0) return null; 586 return .{ .fork_commits = .{ 587 .fork = initForkRoute(identity, id) orelse return null, 588 .oid = Array(ref_route_max_len).from(oid) orelse return null, 589 .message = true, 590 } }; 591 } 592 593 pub fn forkNewRepoRoute(identity: []const u8, id: []const u8) ?RoutablePage { 594 return .{ .fork_new_repo = initForkRoute(identity, id) orelse return null }; 595 } 596 597 pub fn forkNewUserRoute(identity: []const u8, id: []const u8) ?RoutablePage { 598 return .{ .fork_new_user = initForkRoute(identity, id) orelse return null }; 599 } 600 601 pub fn forkUserRoute(identity: []const u8, id: []const u8) ?RoutablePage { 602 return .{ .fork_user = initForkRoute(identity, id) orelse return null }; 603 } 604 605 // build a `.repo_files` route (a null ref_kind = the bare default-branch 606 // root). null if the result doesn't fit the inline name. 607 pub fn repoFilesRoute(identity: []const u8, ref_kind: ?RefOrOid, ref_value: []const u8, dir: []const u8, line: usize) ?RoutablePage { 608 if (ref_kind == null and (ref_value.len != 0 or dir.len != 0)) return null; 609 if (ref_kind != null and ref_value.len == 0 and dir.len != 0) return null; 610 return .{ .repo_files = .{ 611 .name = Array(repo_identity_max_len).from(identity) orelse return null, 612 .ref_kind = ref_kind, 613 .ref_value = Array(ref_route_max_len).from(ref_value) orelse return null, 614 .path = Array(repo_route_max_len).from(dir) orelse return null, 615 .line = line, 616 } }; 617 } 618 619 // carry a search term on a files route, url-encoding it into the route. 620 // null when it doesn't fit. 621 pub fn withFind(self: RoutablePage, file_name: []const u8) ?RoutablePage { 622 const find = encodeParam(find_route_max_len, file_name) orelse return null; 623 var route = self; 624 switch (route) { 625 .repo_files => |*f| f.find = find, 626 .fork_files => |*f| f.find = find, 627 else => return null, 628 } 629 return route; 630 } 631 632 // carry a search query on a searchable route, url-encoding it 633 // into the route. 634 pub fn withSearch(self: RoutablePage, query: []const u8) ?RoutablePage { 635 const search = encodeParam(search_route_max_len, query) orelse return null; 636 return withEncodedSearch(self, search.slice()); 637 } 638 639 // the label and search segments of a thread list url, either one optional 640 fn writeListFilters(writer: *std.Io.Writer, label: []const u8, search: []const u8) !void { 641 if (label.len != 0) try writer.print("/" ++ label_filter_seg ++ "{s}", .{label}); 642 if (search.len != 0) try writer.print("/" ++ search_seg ++ "{s}", .{search}); 643 } 644 645 // carry the already-encoded list filters a selected thread's url names 646 fn withEncodedFilters(self: ?RoutablePage, label: []const u8, search: []const u8) ?RoutablePage { 647 var route = withEncodedSearch(self, search) orelse return null; 648 switch (route) { 649 inline .repo_issues, .repo_patches, .repo_discussions => |*thread| thread.label = @TypeOf(thread.label).from(label) orelse return null, 650 else => return null, 651 } 652 return route; 653 } 654 655 // carry an already-encoded search param, as a url hands it over 656 fn withEncodedSearch(self: ?RoutablePage, value: []const u8) ?RoutablePage { 657 var route = self orelse return null; 658 const search = Array(search_route_max_len).from(value) orelse return null; 659 switch (route) { 660 .home_users => |*u| u.search = search, 661 .user_repos => |*u| u.search = search, 662 .repo_commits => |*c| c.search = search, 663 .repo_refs => |*r| r.search = search, 664 .repo_issues => |*i| i.search = search, 665 .repo_patches => |*p| p.search = search, 666 .repo_discussions => |*d| d.search = search, 667 else => return null, 668 } 669 return route; 670 } 671 672 // root a commits route's list at `oid` rather than the ref's own commit. 673 pub fn withFrom(self: RoutablePage, oid: []const u8) ?RoutablePage { 674 var route = self; 675 switch (route) { 676 .repo_commits => |*c| c.from = Array(ref_route_max_len).from(oid) orelse return null, 677 else => return null, 678 } 679 return route; 680 } 681 682 fn encodeParam(comptime max_len: usize, value: []const u8) ?Array(max_len) { 683 var encoded: Array(max_len) = .{}; 684 var writer: std.Io.Writer = .fixed(&encoded.bytes); 685 std.Uri.Component.percentEncode(&writer, value, isUnreserved) catch return null; 686 encoded.len = @intCast(writer.buffered().len); 687 return encoded; 688 } 689 690 pub fn repoPatchRevFilesRoute(identity: []const u8, id: []const u8, path: []const u8, line: usize) ?RoutablePage { 691 _ = evt.parseEventId(id) catch return null; 692 return .{ .repo_files = .{ 693 .name = Array(repo_identity_max_len).from(identity) orelse return null, 694 .patchrev_id = Array(evt.event_id_size * 2).from(id) orelse return null, 695 .path = Array(repo_route_max_len).from(path) orelse return null, 696 .line = line, 697 } }; 698 } 699 700 // build a `.repo_commits` route (a null ref_or_oid = the default branch). 701 // always carries the `commits` marker so the bare route doesn't collide 702 // with the files root. 703 pub fn repoCommitsRoute(identity: []const u8, ref_or_oid: ?RefOrOid, value: []const u8, base_oid: []const u8) ?RoutablePage { 704 if (ref_or_oid == null and value.len != 0) return null; 705 return .{ .repo_commits = .{ 706 .name = Array(repo_identity_max_len).from(identity) orelse return null, 707 .ref_or_oid = ref_or_oid, 708 .value = Array(ref_route_max_len).from(value) orelse return null, 709 .base_oid = Array(ref_route_max_len).from(base_oid) orelse return null, 710 } }; 711 } 712 713 pub fn repoCommitsMergeRoute(identity: []const u8, oid: []const u8) ?RoutablePage { 714 return .{ .repo_commits = .{ 715 .name = Array(repo_identity_max_len).from(identity) orelse return null, 716 .merge = Array(ref_route_max_len).from(oid) orelse return null, 717 } }; 718 } 719 720 pub fn repoDiffRoute(identity: []const u8, ref_or_oid: ?RefOrOid, value: []const u8, start: usize, path: []const u8, base_oid: []const u8) ?RoutablePage { 721 if (base_oid.len == 0 or (ref_or_oid == null and value.len != 0)) return null; 722 return .{ .repo_diff = .{ 723 .name = Array(repo_identity_max_len).from(identity) orelse return null, 724 .ref_or_oid = ref_or_oid, 725 .value = Array(ref_route_max_len).from(value) orelse return null, 726 .base_oid = Array(ref_route_max_len).from(base_oid) orelse return null, 727 .start = start, 728 .path = Array(repo_route_max_len).from(path) orelse return null, 729 } }; 730 } 731 732 pub fn repoPatchRevDiffRoute(identity: []const u8, id: []const u8, start: usize, path: []const u8) ?RoutablePage { 733 _ = evt.parseEventId(id) catch return null; 734 return .{ .repo_diff = .{ 735 .name = Array(repo_identity_max_len).from(identity) orelse return null, 736 .patchrev_id = Array(evt.event_id_size * 2).from(id) orelse return null, 737 .start = start, 738 .path = Array(repo_route_max_len).from(path) orelse return null, 739 } }; 740 } 741 742 // build a `.repo_commits` route showing the ref/oid's commit message in 743 // full, which is the only content that page renders. 744 pub fn repoCommitMessageRoute(identity: []const u8, ref_or_oid: RefOrOid, value: []const u8, base_oid: []const u8) ?RoutablePage { 745 if (value.len == 0) return null; 746 return .{ .repo_commits = .{ 747 .name = Array(repo_identity_max_len).from(identity) orelse return null, 748 .ref_or_oid = ref_or_oid, 749 .value = Array(ref_route_max_len).from(value) orelse return null, 750 .base_oid = Array(ref_route_max_len).from(base_oid) orelse return null, 751 .message = true, 752 } }; 753 } 754 755 // build a `.repo_refs` route windowing `kind`'s column from the 756 // url-encoded ref name `from` ("" = the first window). 757 pub fn repoRefsRoute(identity: []const u8, kind: RefKind, from: []const u8) ?RoutablePage { 758 return .{ .repo_refs = .{ 759 .name = Array(repo_route_max_len).from(identity) orelse return null, 760 .kind = kind, 761 .from = Array(ref_route_max_len).from(from) orelse return null, 762 } }; 763 } 764 765 // build the events list or a window rooted at one event. 766 pub fn repoEventsRoute(identity: []const u8, view: EventsView, kind: ?evt.EventKind, selected: []const u8, moment: ?u64) ?RoutablePage { 767 if ((kind == null) != (selected.len == 0)) return null; 768 return .{ .repo_events = .{ 769 .name = Array(repo_identity_max_len).from(identity) orelse return null, 770 .view = view, 771 .kind = kind, 772 .selected = Array(evt.event_id_size * 2).from(selected) orelse return null, 773 .moment = moment, 774 } }; 775 } 776 777 // build a `.repo_issues` route for "owner/name" (identity) showing 778 // `status`'s list, filtered to the url-encoded `label` ("" = unfiltered) and 779 // rooted at the issue with hex event id `selected` ("" = the first window). 780 pub fn repoIssuesRoute(identity: []const u8, status: evt.Issue.Status, label: []const u8, selected: []const u8) ?RoutablePage { 781 return .{ .repo_issues = .{ 782 .name = Array(repo_route_max_len).from(identity) orelse return null, 783 .label = Array(issue_label_route_max_len).from(label) orelse return null, 784 .selected = Array(evt.event_id_size * 2).from(selected) orelse return null, 785 .view = switch (status) { 786 .open => .open, 787 .closed => .closed, 788 }, 789 } }; 790 } 791 792 pub fn repoPatchesRoute(identity: []const u8, status: evt.Patch.StatusKind, label: []const u8, selected: []const u8) ?RoutablePage { 793 return .{ .repo_patches = .{ 794 .name = Array(repo_route_max_len).from(identity) orelse return null, 795 .label = Array(patch_label_route_max_len).from(label) orelse return null, 796 .selected = Array(evt.event_id_size * 2).from(selected) orelse return null, 797 .view = switch (status) { 798 .open => .open, 799 .closed => .closed, 800 .merged => .merged, 801 }, 802 } }; 803 } 804 805 pub fn repoPatchesDraftsRoute(identity: []const u8) ?RoutablePage { 806 return .{ .repo_patches = .{ 807 .name = Array(repo_route_max_len).from(identity) orelse return null, 808 .view = .drafts, 809 } }; 810 } 811 812 pub fn repoPatchPublishRoute(identity: []const u8, selected: []const u8) ?RoutablePage { 813 if (selected.len == 0) return null; 814 var route = repoPatchesRoute(identity, .open, "", selected) orelse return null; 815 switch (route) { 816 .repo_patches => |*patch| patch.view = .publish, 817 else => unreachable, 818 } 819 return route; 820 } 821 822 pub fn repoPatchMergeRoute(identity: []const u8, selected: []const u8) ?RoutablePage { 823 if (selected.len == 0) return null; 824 var route = repoPatchesRoute(identity, .open, "", selected) orelse return null; 825 switch (route) { 826 .repo_patches => |*patch| patch.view = .merge, 827 else => unreachable, 828 } 829 return route; 830 } 831 832 pub fn repoDiscussionsRoute(identity: []const u8, label: []const u8, selected: []const u8) ?RoutablePage { 833 return .{ .repo_discussions = .{ 834 .name = Array(repo_route_max_len).from(identity) orelse return null, 835 .label = Array(discussion_label_route_max_len).from(label) orelse return null, 836 .selected = Array(evt.event_id_size * 2).from(selected) orelse return null, 837 } }; 838 } 839 840 // build the default list route for a thread event kind. 841 pub fn repoThreadRoute(kind: evt.EventKind, identity: []const u8, label: []const u8, selected: []const u8) ?RoutablePage { 842 return switch (kind) { 843 .issue => repoIssuesRoute(identity, .open, label, selected), 844 .patch => repoPatchesRoute(identity, .open, label, selected), 845 .discuss => repoDiscussionsRoute(identity, label, selected), 846 else => null, 847 }; 848 } 849 850 // build a selected thread route at one of its comment windows. 851 pub fn repoThreadCommentsRoute(kind: evt.EventKind, identity: []const u8, selected: []const u8, start: usize) ?RoutablePage { 852 var route = repoThreadRoute(kind, identity, "", selected) orelse return null; 853 switch (route) { 854 .repo_issues => |*thread| thread.comments_start = start, 855 .repo_patches => |*thread| thread.comments_start = start, 856 .repo_discussions => |*thread| thread.comments_start = start, 857 else => unreachable, 858 } 859 return route; 860 } 861 862 // build a comment permalink route at one of its immediate-reply windows. 863 pub fn repoThreadCommentRoute(kind: evt.EventKind, identity: []const u8, thread_id: []const u8, comment_id: []const u8, start: usize) ?RoutablePage { 864 if (thread_id.len == 0 or comment_id.len == 0) return null; 865 var route = repoThreadCommentsRoute(kind, identity, thread_id, start) orelse return null; 866 const comment = Array(evt.event_id_size * 2).from(comment_id) orelse return null; 867 switch (route) { 868 .repo_issues => |*thread| thread.comment = comment, 869 .repo_patches => |*thread| thread.comment = comment, 870 .repo_discussions => |*thread| thread.comment = comment, 871 else => unreachable, 872 } 873 return route; 874 } 875 876 // build the form route for replying to a thread or one of its comments. 877 pub fn repoThreadCommentNewRoute(kind: evt.EventKind, identity: []const u8, thread_id: []const u8, parent_id: []const u8) ?RoutablePage { 878 if (thread_id.len == 0) return null; 879 var route = repoThreadCommentsRoute(kind, identity, thread_id, 0) orelse return null; 880 const parent_event_id = Array(evt.event_id_size * 2).from(parent_id) orelse return null; 881 switch (route) { 882 .repo_issues => |*thread| { 883 thread.comment = parent_event_id; 884 thread.view = .new_comment; 885 }, 886 .repo_patches => |*thread| { 887 thread.comment = parent_event_id; 888 thread.view = .new_comment; 889 }, 890 .repo_discussions => |*thread| { 891 thread.comment = parent_event_id; 892 thread.view = .new_comment; 893 }, 894 else => unreachable, 895 } 896 return route; 897 } 898 899 // build the form route for editing a comment. 900 pub fn repoThreadCommentEditRoute(kind: evt.EventKind, identity: []const u8, thread_id: []const u8, comment_id: []const u8) ?RoutablePage { 901 var route = repoThreadCommentRoute(kind, identity, thread_id, comment_id, 0) orelse return null; 902 switch (route) { 903 .repo_issues => |*thread| thread.view = .edit_comment, 904 .repo_patches => |*thread| thread.view = .edit_comment, 905 .repo_discussions => |*thread| thread.view = .edit_comment, 906 else => unreachable, 907 } 908 return route; 909 } 910 911 // build the confirmation route for removing a thread or comment. 912 pub fn repoThreadRemoveRoute(kind: evt.EventKind, identity: []const u8, thread_id: []const u8, comment_id: []const u8) ?RoutablePage { 913 var route = if (comment_id.len == 0) 914 repoThreadCommentsRoute(kind, identity, thread_id, 0) orelse return null 915 else 916 repoThreadCommentRoute(kind, identity, thread_id, comment_id, 0) orelse return null; 917 switch (route) { 918 .repo_issues => |*thread| thread.view = .remove, 919 .repo_patches => |*thread| thread.view = .remove, 920 .repo_discussions => |*thread| thread.view = .remove, 921 else => unreachable, 922 } 923 return route; 924 } 925 926 // build a thread labels route, keeping its url-encoded label filter. 927 pub fn repoThreadLabelsRoute(kind: evt.EventKind, identity: []const u8, label: []const u8) ?RoutablePage { 928 var route = repoThreadRoute(kind, identity, label, "") orelse return null; 929 switch (route) { 930 .repo_issues => |*thread| thread.view = .labels, 931 .repo_patches => |*thread| thread.view = .labels, 932 .repo_discussions => |*thread| thread.view = .labels, 933 else => unreachable, 934 } 935 return route; 936 } 937 938 // build a new-thread form route. 939 pub fn repoThreadNewRoute(kind: evt.EventKind, identity: []const u8) ?RoutablePage { 940 var route = repoThreadRoute(kind, identity, "", "") orelse return null; 941 switch (route) { 942 .repo_issues => |*thread| thread.view = .new, 943 .repo_patches => |*thread| thread.view = .new, 944 .repo_discussions => |*thread| thread.view = .new, 945 else => unreachable, 946 } 947 return route; 948 } 949 950 // build the edit form route for a thread. 951 pub fn repoThreadEditRoute(kind: evt.EventKind, identity: []const u8, selected: []const u8) ?RoutablePage { 952 if (selected.len == 0) return null; 953 var route = repoThreadRoute(kind, identity, "", selected) orelse return null; 954 switch (route) { 955 .repo_issues => |*thread| thread.view = .edit, 956 .repo_patches => |*thread| thread.view = .edit, 957 .repo_discussions => |*thread| thread.view = .edit, 958 else => unreachable, 959 } 960 return route; 961 } 962 963 // build a route showing a thread's whole description. 964 pub fn repoThreadDescriptionRoute(kind: evt.EventKind, identity: []const u8, selected: []const u8) ?RoutablePage { 965 if (selected.len == 0) return null; 966 var route = repoThreadRoute(kind, identity, "", selected) orelse return null; 967 switch (route) { 968 .repo_issues => |*thread| thread.view = .description, 969 .repo_patches => |*thread| thread.view = .description, 970 .repo_discussions => |*thread| thread.view = .description, 971 else => unreachable, 972 } 973 return route; 974 } 975 976 // build a `.repo_issues` route showing the conflicts list, rooted at the 977 // issue with hex event id `start` ("" = the first window). 978 pub fn repoIssuesConflictsRoute(identity: []const u8, start: []const u8) ?RoutablePage { 979 return .{ .repo_issues = .{ 980 .name = Array(repo_route_max_len).from(identity) orelse return null, 981 .selected = Array(evt.event_id_size * 2).from(start) orelse return null, 982 .view = .conflicts, 983 } }; 984 } 985 986 // build a `.repo_issues` route showing the conflict resolve form for the 987 // issue with hex event id `selected`; `theirs` is the comma-separated list 988 // of fields prefilled from their side. 989 pub fn repoIssuesResolveRoute(identity: []const u8, selected: []const u8, theirs: []const u8) ?RoutablePage { 990 if (selected.len == 0) return null; 991 return .{ .repo_issues = .{ 992 .name = Array(repo_route_max_len).from(identity) orelse return null, 993 .selected = Array(evt.event_id_size * 2).from(selected) orelse return null, 994 .theirs = Array(theirs_route_max_len).from(theirs) orelse return null, 995 .view = .resolve, 996 } }; 997 } 998 999 pub fn repoPatchesConflictsRoute(identity: []const u8, start: []const u8) ?RoutablePage { 1000 return .{ .repo_patches = .{ 1001 .name = Array(repo_route_max_len).from(identity) orelse return null, 1002 .selected = Array(evt.event_id_size * 2).from(start) orelse return null, 1003 .view = .conflicts, 1004 } }; 1005 } 1006 1007 pub fn repoPatchesResolveRoute(identity: []const u8, selected: []const u8, theirs: []const u8) ?RoutablePage { 1008 if (selected.len == 0) return null; 1009 return .{ .repo_patches = .{ 1010 .name = Array(repo_route_max_len).from(identity) orelse return null, 1011 .selected = Array(evt.event_id_size * 2).from(selected) orelse return null, 1012 .theirs = Array(theirs_route_max_len).from(theirs) orelse return null, 1013 .view = .resolve, 1014 } }; 1015 } 1016 1017 // an inline, owned array of data. keeping it in the route (rather than a 1018 // borrowed slice) makes RoutablePage a plain value: it can be copied, stored 1019 // in history, and serialized without any arena tracking. 1020 pub fn Array(comptime max_len: usize) type { 1021 return struct { 1022 bytes: [max_len]u8 = undefined, 1023 len: u16 = 0, 1024 1025 pub fn from(s: []const u8) ?Array(max_len) { 1026 if (s.len > max_len) return null; 1027 var name = Array(max_len){ .len = @intCast(s.len) }; 1028 @memcpy(name.bytes[0..s.len], s); 1029 return name; 1030 } 1031 1032 pub fn slice(self: *const Array(max_len)) []const u8 { 1033 return self.bytes[0..self.len]; 1034 } 1035 1036 // round-trip as a json string instead of an array of numbers. 1037 pub fn jsonStringify(self: *const Array(max_len), jw: anytype) !void { 1038 try jw.write(self.slice()); 1039 } 1040 1041 pub fn jsonParse(allocator: std.mem.Allocator, source: anytype, options: std.json.ParseOptions) !Array(max_len) { 1042 const s = try std.json.innerParse([]const u8, allocator, source, options); 1043 // ValueTooLong is std.json's error for an over-long field. 1044 return from(s) orelse error.ValueTooLong; 1045 } 1046 }; 1047 } 1048 1049 pub fn toUrl(self: RoutablePage, arena: *std.heap.ArenaAllocator) ![]const u8 { 1050 return switch (self) { 1051 .home_about => "/", 1052 .home_users => |u| blk: { 1053 var out: std.Io.Writer.Allocating = .init(arena.allocator()); 1054 try out.writer.writeAll("/users"); 1055 try writeListWindow(&out.writer, u.search.slice(), u.start); 1056 break :blk out.written(); 1057 }, 1058 .home_new_repo => "/repo/new", 1059 .home_new_user => "/user/new", 1060 .home_user => "/user", 1061 .not_found => "/not-found", 1062 .user_repos => |u| blk: { 1063 var out: std.Io.Writer.Allocating = .init(arena.allocator()); 1064 try out.writer.print(user_segment ++ "{s}/repos", .{u.name.slice()}); 1065 try writeListWindow(&out.writer, u.search.slice(), u.start); 1066 break :blk out.written(); 1067 }, 1068 .user_forks => |u| if (u.start == 0) 1069 try std.fmt.allocPrint(arena.allocator(), user_segment ++ "{s}/forks", .{u.name.slice()}) 1070 else 1071 try std.fmt.allocPrint(arena.allocator(), user_segment ++ "{s}/forks/" ++ start_seg ++ "{d}", .{ u.name.slice(), u.start }), 1072 .user_new_repo => |name| try std.fmt.allocPrint(arena.allocator(), user_segment ++ "{s}/new-repo", .{name.slice()}), 1073 .user_new_user => |name| try std.fmt.allocPrint(arena.allocator(), user_segment ++ "{s}/new-user", .{name.slice()}), 1074 .user_user => |name| try std.fmt.allocPrint(arena.allocator(), user_segment ++ "{s}/user", .{name.slice()}), 1075 .repo_files => |f| blk: { 1076 const prefix = try repoUrlPrefix(arena, f.name.slice()); 1077 if (f.ref_kind == null and f.patchrev_id.len == 0 and f.find.len == 0 and f.line == 0) break :blk if (prefix.len == 0) "/" else prefix; 1078 var out: std.Io.Writer.Allocating = .init(arena.allocator()); 1079 try out.writer.print("{s}/" ++ files_seg, .{prefix}); 1080 if (f.ref_kind) |kind| if (f.ref_value.len != 0) try out.writer.print("/{s}:{s}", .{ @tagName(kind), f.ref_value.slice() }); 1081 if (f.patchrev_id.len != 0) try out.writer.print("/patchrev:{s}", .{f.patchrev_id.slice()}); 1082 if (f.find.len != 0) try out.writer.print("/" ++ find_seg ++ "{s}", .{f.find.slice()}); 1083 if (f.line != 0) try out.writer.print("/" ++ line_seg ++ "{d}", .{f.line}); 1084 if (f.path.len != 0) try out.writer.print("/" ++ path_seg ++ "{s}", .{f.path.slice()}); 1085 break :blk out.written(); 1086 }, 1087 .repo_commits => |c| blk: { 1088 const prefix = try repoUrlPrefix(arena, c.name.slice()); 1089 var out: std.Io.Writer.Allocating = .init(arena.allocator()); 1090 try out.writer.print("{s}/" ++ commits_seg, .{prefix}); 1091 if (c.ref_or_oid) |kind| if (c.value.len != 0) try out.writer.print("/{s}:{s}", .{ @tagName(kind), c.value.slice() }); 1092 if (c.base_oid.len != 0) try out.writer.print("/" ++ base_seg ++ "{s}", .{c.base_oid.slice()}); 1093 if (c.search.len != 0) try out.writer.print("/" ++ search_seg ++ "{s}", .{c.search.slice()}); 1094 if (c.from.len != 0) try out.writer.print("/" ++ from_seg ++ "{s}", .{c.from.slice()}); 1095 if (c.merge.len != 0) try out.writer.print("/" ++ merge_seg ++ "{s}", .{c.merge.slice()}); 1096 if (c.message) try out.writer.print("/" ++ message_seg, .{}); 1097 break :blk out.written(); 1098 }, 1099 .repo_diff => |d| blk: { 1100 const prefix = try repoUrlPrefix(arena, d.name.slice()); 1101 var out: std.Io.Writer.Allocating = .init(arena.allocator()); 1102 try out.writer.print("{s}/diff", .{prefix}); 1103 if (d.ref_or_oid) |kind| if (d.value.len != 0) try out.writer.print("/{s}:{s}", .{ @tagName(kind), d.value.slice() }); 1104 if (d.patchrev_id.len != 0) try out.writer.print("/patchrev:{s}", .{d.patchrev_id.slice()}); 1105 if (d.base_oid.len != 0) try out.writer.print("/" ++ base_seg ++ "{s}", .{d.base_oid.slice()}); 1106 if (d.start != 0) try out.writer.print("/" ++ start_seg ++ "{d}", .{d.start}); 1107 if (d.path.len != 0) try out.writer.print("/" ++ path_seg ++ "{s}", .{d.path.slice()}); 1108 break :blk out.written(); 1109 }, 1110 .repo_refs => |r| blk: { 1111 var out: std.Io.Writer.Allocating = .init(arena.allocator()); 1112 try out.writer.print("{s}/refs", .{try repoUrlPrefix(arena, r.name.slice())}); 1113 if (r.from.len != 0) try out.writer.print("/{s}:{s}", .{ @tagName(r.kind), r.from.slice() }); 1114 if (r.search.len != 0) try out.writer.print("/" ++ search_seg ++ "{s}", .{r.search.slice()}); 1115 break :blk out.written(); 1116 }, 1117 .repo_issues => |i| blk: { 1118 const prefix = try repoUrlPrefix(arena, i.name.slice()); 1119 if (i.view == .edit) break :blk try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ issue_seg ++ "{s}/edit", .{ prefix, i.selected.slice() }); 1120 if (i.view == .description) break :blk try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ issue_seg ++ "{s}/description", .{ prefix, i.selected.slice() }); 1121 if (i.view == .resolve) break :blk if (i.theirs.len == 0) 1122 try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ issue_seg ++ "{s}/resolve", .{ prefix, i.selected.slice() }) 1123 else 1124 try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ issue_seg ++ "{s}/" ++ theirs_seg ++ "{s}/resolve", .{ prefix, i.selected.slice(), i.theirs.slice() }); 1125 if (i.view == .new_comment) break :blk if (i.comment.len == 0) 1126 try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ issue_seg ++ "{s}/new", .{ prefix, i.selected.slice() }) 1127 else 1128 try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ issue_seg ++ "{s}/" ++ comment_seg ++ "{s}/new", .{ prefix, i.selected.slice(), i.comment.slice() }); 1129 if (i.view == .edit_comment) break :blk try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ issue_seg ++ "{s}/" ++ comment_seg ++ "{s}/edit", .{ prefix, i.selected.slice(), i.comment.slice() }); 1130 if (i.view == .remove) break :blk if (i.comment.len == 0) 1131 try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ issue_seg ++ "{s}/remove", .{ prefix, i.selected.slice() }) 1132 else 1133 try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ issue_seg ++ "{s}/" ++ comment_seg ++ "{s}/remove", .{ prefix, i.selected.slice(), i.comment.slice() }); 1134 if (i.view == .conflicts) break :blk if (i.selected.len == 0) 1135 try std.fmt.allocPrint(arena.allocator(), "{s}/issues/conflicts", .{prefix}) 1136 else 1137 try std.fmt.allocPrint(arena.allocator(), "{s}/issues/" ++ start_seg ++ "{s}/conflicts", .{ prefix, i.selected.slice() }); 1138 if (i.comment.len != 0) break :blk if (i.comments_start == 0) 1139 try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ issue_seg ++ "{s}/" ++ comment_seg ++ "{s}", .{ prefix, i.selected.slice(), i.comment.slice() }) 1140 else 1141 try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ issue_seg ++ "{s}/" ++ comment_seg ++ "{s}/" ++ start_seg ++ "{d}", .{ prefix, i.selected.slice(), i.comment.slice(), i.comments_start }); 1142 var out: std.Io.Writer.Allocating = .init(arena.allocator()); 1143 // the list the thread is selected in stays filtered, so paging 1144 // and reloading keep the label and the query 1145 if (i.selected.len != 0) { 1146 try out.writer.print("{s}/" ++ issue_seg ++ "{s}", .{ prefix, i.selected.slice() }); 1147 try writeListFilters(&out.writer, i.label.slice(), i.search.slice()); 1148 if (i.comments_start != 0) try out.writer.print("/" ++ start_seg ++ "{d}", .{i.comments_start}); 1149 break :blk out.written(); 1150 } 1151 try out.writer.print("{s}/issues/{s}", .{ prefix, @tagName(i.view) }); 1152 try writeListFilters(&out.writer, i.label.slice(), i.search.slice()); 1153 break :blk out.written(); 1154 }, 1155 .repo_patches => |p| blk: { 1156 const prefix = try repoUrlPrefix(arena, p.name.slice()); 1157 if (p.view == .edit) break :blk try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ patch_seg ++ "{s}/edit", .{ prefix, p.selected.slice() }); 1158 if (p.view == .publish) break :blk try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ patch_seg ++ "{s}/publish", .{ prefix, p.selected.slice() }); 1159 if (p.view == .merge) break :blk try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ patch_seg ++ "{s}/merge", .{ prefix, p.selected.slice() }); 1160 if (p.view == .description) break :blk try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ patch_seg ++ "{s}/description", .{ prefix, p.selected.slice() }); 1161 if (p.view == .resolve) break :blk if (p.theirs.len == 0) 1162 try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ patch_seg ++ "{s}/resolve", .{ prefix, p.selected.slice() }) 1163 else 1164 try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ patch_seg ++ "{s}/" ++ theirs_seg ++ "{s}/resolve", .{ prefix, p.selected.slice(), p.theirs.slice() }); 1165 if (p.view == .new_comment) break :blk if (p.comment.len == 0) 1166 try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ patch_seg ++ "{s}/new", .{ prefix, p.selected.slice() }) 1167 else 1168 try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ patch_seg ++ "{s}/" ++ comment_seg ++ "{s}/new", .{ prefix, p.selected.slice(), p.comment.slice() }); 1169 if (p.view == .edit_comment) break :blk try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ patch_seg ++ "{s}/" ++ comment_seg ++ "{s}/edit", .{ prefix, p.selected.slice(), p.comment.slice() }); 1170 if (p.view == .remove) break :blk if (p.comment.len == 0) 1171 try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ patch_seg ++ "{s}/remove", .{ prefix, p.selected.slice() }) 1172 else 1173 try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ patch_seg ++ "{s}/" ++ comment_seg ++ "{s}/remove", .{ prefix, p.selected.slice(), p.comment.slice() }); 1174 if (p.view == .conflicts) break :blk if (p.selected.len == 0) 1175 try std.fmt.allocPrint(arena.allocator(), "{s}/patches/conflicts", .{prefix}) 1176 else 1177 try std.fmt.allocPrint(arena.allocator(), "{s}/patches/" ++ start_seg ++ "{s}/conflicts", .{ prefix, p.selected.slice() }); 1178 if (p.comment.len != 0) break :blk if (p.comments_start == 0) 1179 try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ patch_seg ++ "{s}/" ++ comment_seg ++ "{s}", .{ prefix, p.selected.slice(), p.comment.slice() }) 1180 else 1181 try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ patch_seg ++ "{s}/" ++ comment_seg ++ "{s}/" ++ start_seg ++ "{d}", .{ prefix, p.selected.slice(), p.comment.slice(), p.comments_start }); 1182 var out: std.Io.Writer.Allocating = .init(arena.allocator()); 1183 // the list the thread is selected in stays filtered, so paging 1184 // and reloading keep the label and the query 1185 if (p.selected.len != 0) { 1186 try out.writer.print("{s}/" ++ patch_seg ++ "{s}", .{ prefix, p.selected.slice() }); 1187 try writeListFilters(&out.writer, p.label.slice(), p.search.slice()); 1188 if (p.comments_start != 0) try out.writer.print("/" ++ start_seg ++ "{d}", .{p.comments_start}); 1189 break :blk out.written(); 1190 } 1191 try out.writer.print("{s}/patches/{s}", .{ prefix, @tagName(p.view) }); 1192 try writeListFilters(&out.writer, p.label.slice(), p.search.slice()); 1193 break :blk out.written(); 1194 }, 1195 .repo_discussions => |t| blk: { 1196 const prefix = try repoUrlPrefix(arena, t.name.slice()); 1197 if (t.view == .edit) break :blk try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ discuss_seg ++ "{s}/edit", .{ prefix, t.selected.slice() }); 1198 if (t.view == .description) break :blk try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ discuss_seg ++ "{s}/description", .{ prefix, t.selected.slice() }); 1199 if (t.view == .new_comment) break :blk if (t.comment.len == 0) 1200 try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ discuss_seg ++ "{s}/new", .{ prefix, t.selected.slice() }) 1201 else 1202 try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ discuss_seg ++ "{s}/" ++ comment_seg ++ "{s}/new", .{ prefix, t.selected.slice(), t.comment.slice() }); 1203 if (t.view == .edit_comment) break :blk try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ discuss_seg ++ "{s}/" ++ comment_seg ++ "{s}/edit", .{ prefix, t.selected.slice(), t.comment.slice() }); 1204 if (t.view == .remove) break :blk if (t.comment.len == 0) 1205 try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ discuss_seg ++ "{s}/remove", .{ prefix, t.selected.slice() }) 1206 else 1207 try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ discuss_seg ++ "{s}/" ++ comment_seg ++ "{s}/remove", .{ prefix, t.selected.slice(), t.comment.slice() }); 1208 if (t.comment.len != 0) break :blk if (t.comments_start == 0) 1209 try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ discuss_seg ++ "{s}/" ++ comment_seg ++ "{s}", .{ prefix, t.selected.slice(), t.comment.slice() }) 1210 else 1211 try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ discuss_seg ++ "{s}/" ++ comment_seg ++ "{s}/" ++ start_seg ++ "{d}", .{ prefix, t.selected.slice(), t.comment.slice(), t.comments_start }); 1212 var out: std.Io.Writer.Allocating = .init(arena.allocator()); 1213 // the list the thread is selected in stays filtered, so paging 1214 // and reloading keep the label and the query 1215 if (t.selected.len != 0) { 1216 try out.writer.print("{s}/" ++ discuss_seg ++ "{s}", .{ prefix, t.selected.slice() }); 1217 try writeListFilters(&out.writer, t.label.slice(), t.search.slice()); 1218 if (t.comments_start != 0) try out.writer.print("/" ++ start_seg ++ "{d}", .{t.comments_start}); 1219 break :blk out.written(); 1220 } 1221 try out.writer.print("{s}/discussions/{s}", .{ prefix, @tagName(t.view) }); 1222 try writeListFilters(&out.writer, t.label.slice(), t.search.slice()); 1223 break :blk out.written(); 1224 }, 1225 .repo_undo => |u| blk: { 1226 const prefix = try repoUrlPrefix(arena, u.name.slice()); 1227 break :blk if (u.clear) 1228 try std.fmt.allocPrint(arena.allocator(), "{s}/undo/clear", .{prefix}) 1229 else if (u.index) |index| 1230 try std.fmt.allocPrint(arena.allocator(), "{s}/undo/{d}", .{ prefix, index }) 1231 else 1232 try std.fmt.allocPrint(arena.allocator(), "{s}/undo", .{prefix}); 1233 }, 1234 .repo_events => |e| blk: { 1235 const prefix = try repoUrlPrefix(arena, e.name.slice()); 1236 const moment = if (e.moment) |value| try std.fmt.allocPrint(arena.allocator(), "/moment:{d}", .{value}) else ""; 1237 break :blk if (e.kind) |kind| 1238 try std.fmt.allocPrint(arena.allocator(), "{s}/event:{s}/kind:{s}{s}", .{ prefix, e.selected.slice(), @tagName(kind), moment }) 1239 else 1240 try std.fmt.allocPrint(arena.allocator(), "{s}/events/{s}{s}", .{ prefix, @tagName(e.view), moment }); 1241 }, 1242 .repo_new_repo => |name| try std.fmt.allocPrint(arena.allocator(), "{s}/new-repo", .{try repoUrlPrefix(arena, name.slice())}), 1243 .repo_new_user => |name| try std.fmt.allocPrint(arena.allocator(), "{s}/new-user", .{try repoUrlPrefix(arena, name.slice())}), 1244 .repo_user => |name| try std.fmt.allocPrint(arena.allocator(), "{s}/user", .{try repoUrlPrefix(arena, name.slice())}), 1245 .fork_patch => |f| try std.fmt.allocPrint(arena.allocator(), fork_segment ++ "{s}/" ++ patch_seg ++ "{s}", .{ f.name.slice(), f.id.slice() }), 1246 .fork_diff => |d| blk: { 1247 var out: std.Io.Writer.Allocating = .init(arena.allocator()); 1248 try out.writer.print(fork_segment ++ "{s}/" ++ patch_seg ++ "{s}/diff", .{ d.fork.name.slice(), d.fork.id.slice() }); 1249 if (d.oid.len != 0) try out.writer.print("/object:{s}/" ++ base_seg ++ "{s}", .{ d.oid.slice(), d.base_oid.slice() }); 1250 if (d.start != 0) try out.writer.print("/" ++ start_seg ++ "{d}", .{d.start}); 1251 if (d.path.len != 0) try out.writer.print("/" ++ path_seg ++ "{s}", .{d.path.slice()}); 1252 break :blk out.written(); 1253 }, 1254 .fork_files => |f| blk: { 1255 var out: std.Io.Writer.Allocating = .init(arena.allocator()); 1256 try out.writer.print(fork_segment ++ "{s}/" ++ patch_seg ++ "{s}/" ++ files_seg, .{ f.fork.name.slice(), f.fork.id.slice() }); 1257 if (f.oid.len != 0) try out.writer.print("/object:{s}", .{f.oid.slice()}); 1258 if (f.find.len != 0) try out.writer.print("/" ++ find_seg ++ "{s}", .{f.find.slice()}); 1259 if (f.line != 0) try out.writer.print("/" ++ line_seg ++ "{d}", .{f.line}); 1260 if (f.path.len != 0) try out.writer.print("/" ++ path_seg ++ "{s}", .{f.path.slice()}); 1261 break :blk out.written(); 1262 }, 1263 .fork_commits => |c| blk: { 1264 var out: std.Io.Writer.Allocating = .init(arena.allocator()); 1265 try out.writer.print(fork_segment ++ "{s}/" ++ patch_seg ++ "{s}/" ++ commits_seg, .{ c.fork.name.slice(), c.fork.id.slice() }); 1266 if (c.oid.len != 0) try out.writer.print("/object:{s}", .{c.oid.slice()}); 1267 if (c.message) try out.writer.print("/" ++ message_seg, .{}); 1268 break :blk out.written(); 1269 }, 1270 .fork_new_repo => |f| try std.fmt.allocPrint(arena.allocator(), fork_segment ++ "{s}/" ++ patch_seg ++ "{s}/new-repo", .{ f.name.slice(), f.id.slice() }), 1271 .fork_new_user => |f| try std.fmt.allocPrint(arena.allocator(), fork_segment ++ "{s}/" ++ patch_seg ++ "{s}/new-user", .{ f.name.slice(), f.id.slice() }), 1272 .fork_user => |f| try std.fmt.allocPrint(arena.allocator(), fork_segment ++ "{s}/" ++ patch_seg ++ "{s}/user", .{ f.name.slice(), f.id.slice() }), 1273 }; 1274 } 1275 1276 pub fn fromUrl(path: []const u8) ?RoutablePage { 1277 if (std.mem.eql(u8, path, "/")) return default; 1278 if (path.len < 2 or path[0] != '/') return null; 1279 var segments = std.mem.splitScalar(u8, path[1..], '/'); 1280 const first = segments.next() orelse return null; 1281 if (std.mem.eql(u8, first, "users")) { 1282 const params = listParams(&segments, &.{ .start, .search }) orelse return null; 1283 return withEncodedSearch(.{ .home_users = .{ .start = params.start() orelse return null } }, params.values.get(.search) orelse ""); 1284 } 1285 // "user/<name>[/repos[/search:<s>][/start:<n>]|/new-repo|/new-user|/user]" 1286 if (std.mem.eql(u8, first, "user")) { 1287 const name = segments.next() orelse return .home_user; 1288 if (name.len == 0) return null; 1289 // "/user/new" is the home page's new user tab, not a user 1290 if (std.mem.eql(u8, name, "new") and segments.peek() == null) return .home_new_user; 1291 const parsed = Array(evt.User.name_max_len).from(name) orelse return null; // name too long 1292 const sub = segments.next() orelse return .{ .user_repos = .{ .name = parsed } }; 1293 if (std.mem.eql(u8, sub, "repos")) { 1294 const params = listParams(&segments, &.{ .start, .search }) orelse return null; 1295 return withEncodedSearch(.{ .user_repos = .{ .name = parsed, .start = params.start() orelse return null } }, params.values.get(.search) orelse ""); 1296 } 1297 if (std.mem.eql(u8, sub, "forks")) return .{ .user_forks = .{ .name = parsed, .start = listStart(&segments) orelse return null } }; 1298 if (std.mem.eql(u8, sub, "new-repo")) return if (segments.next() == null) .{ .user_new_repo = parsed } else null; 1299 if (std.mem.eql(u8, sub, "new-user")) return if (segments.next() == null) .{ .user_new_user = parsed } else null; 1300 if (std.mem.eql(u8, sub, "user")) return if (segments.next() == null) .{ .user_user = parsed } else null; 1301 return null; // unknown sub-path 1302 } 1303 // "fork/<forker>/<reponame>/patch:<id>[/files|/commits]"; the 1304 // patch branch is implicit, while object ids and view-specific params 1305 // use the same tails as the repo files and commits routes. 1306 if (std.mem.eql(u8, first, "fork")) { 1307 const rest = segments.rest(); 1308 const owner = segments.next() orelse return null; 1309 const repo_name = segments.next() orelse return null; 1310 if (owner.len == 0 or repo_name.len == 0) return null; 1311 const identity = rest[0 .. owner.len + 1 + repo_name.len]; 1312 const patch = segments.next() orelse return null; 1313 if (!std.mem.startsWith(u8, patch, patch_seg)) return null; 1314 const id = patch[patch_seg.len..]; 1315 if (id.len != evt.event_id_size * 2) return null; 1316 const tab = segments.next() orelse return forkPatchRoute(identity, id); 1317 var params = Params{}; 1318 if (std.mem.eql(u8, tab, "diff")) { 1319 params.scanPairs(&segments) catch return null; 1320 if (!params.only(&.{ .start, .object, .base })) return null; 1321 const ref = params.ref() catch return null; 1322 const oid = if (ref) |value| if (value.kind == .object) value.value else return null else ""; 1323 return forkDiffRoute(identity, id, oid, params.values.get(.base) orelse "", params.start() orelse return null, pathValue(segments.rest()) orelse return null); 1324 } 1325 if (std.mem.eql(u8, tab, files_seg)) { 1326 params.scanPairs(&segments) catch return null; 1327 if (!params.only(&.{ .line, .object, .find })) return null; 1328 const line = params.line() orelse return null; 1329 const ref = params.ref() catch return null; 1330 const oid = if (ref) |value| if (value.kind == .object) value.value else return null else ""; 1331 const file_path = pathValue(segments.rest()) orelse return null; 1332 var route = forkFilesRoute(identity, id, oid, file_path, line) orelse return null; 1333 if (params.values.get(.find)) |find| route.fork_files.find = Array(find_route_max_len).from(find) orelse return null; 1334 return route; 1335 } 1336 if (std.mem.eql(u8, tab, commits_seg)) { 1337 params.scanPairs(&segments) catch return null; 1338 if (!params.only(&.{.object})) return null; 1339 const ref = params.ref() catch return null; 1340 const oid = if (ref) |value| if (value.kind == .object) value.value else return null else ""; 1341 if (std.mem.eql(u8, segments.rest(), message_seg)) 1342 return if (oid.len != 0) forkCommitMessageRoute(identity, id, oid) else null; 1343 return if (segments.rest().len == 0) forkCommitsRoute(identity, id, oid) else null; 1344 } 1345 if (std.mem.eql(u8, tab, "new-repo")) return if (segments.next() == null) forkNewRepoRoute(identity, id) else null; 1346 if (std.mem.eql(u8, tab, "new-user")) return if (segments.next() == null) forkNewUserRoute(identity, id) else null; 1347 if (std.mem.eql(u8, tab, "user")) return if (segments.next() == null) forkUserRoute(identity, id) else null; 1348 return null; 1349 } 1350 // "repo/<username>/<reponame>[/<tab tail>]"; the bare pair is the 1351 // files root 1352 if (std.mem.eql(u8, first, "repo")) { 1353 const rest = segments.rest(); // "username/reponame[/...]" 1354 const owner = segments.next() orelse return null; 1355 // "/repo/new" is the home page's new repo tab, not a repo 1356 if (std.mem.eql(u8, owner, "new") and segments.peek() == null) return .home_new_repo; 1357 const repo_name = segments.next() orelse return null; 1358 // reject an empty username or reponame 1359 if (owner.len == 0 or repo_name.len == 0) return null; 1360 const pair = rest[0 .. owner.len + 1 + repo_name.len]; // "username/reponame" 1361 if (segments.peek() != null) { 1362 return repoSubRoute(pair, segments.rest()); 1363 } 1364 return repoFilesRoute(pair, null, "", "", 0); 1365 } 1366 return null; 1367 } 1368 1369 // parse a local-mode url, which elides the "/repo/<owner>/<name>" prefix: 1370 // "/" is the files root and the sub-paths follow directly. 1371 pub fn fromUrlLocal(path: []const u8) ?RoutablePage { 1372 if (std.mem.eql(u8, path, "/")) return repoFilesRoute("", null, "", "", 0); 1373 if (path.len < 2 or path[0] != '/') return null; 1374 return repoSubRoute("", path[1..]); 1375 } 1376 1377 // the url prefix for a repo route's identity: "/repo/<identity>", or "" 1378 // when the identity is elided. 1379 fn repoUrlPrefix(arena: *std.heap.ArenaAllocator, identity: []const u8) ![]const u8 { 1380 if (identity.len == 0) return ""; 1381 return std.fmt.allocPrint(arena.allocator(), repo_segment ++ "{s}", .{identity}); 1382 } 1383 1384 // true when the page builds at its content height on the web, letting the 1385 // browser scroll the whole page, rather than being pinned to the viewport 1386 pub fn fullHeight(self: RoutablePage) bool { 1387 return switch (self) { 1388 .repo_issues => |i| i.view == .resolve, 1389 .repo_patches => |p| p.view == .resolve, 1390 else => false, 1391 }; 1392 } 1393 1394 // the "owner/name" a repo route carries, null for any other route. the 1395 // result borrows the route, so it must outlive the slice. 1396 pub fn repoIdentity(self: *const RoutablePage) ?[]const u8 { 1397 return switch (self.*) { 1398 .repo_files => |*f| f.name.slice(), 1399 .repo_commits => |*c| c.name.slice(), 1400 .repo_diff => |*d| d.name.slice(), 1401 .repo_refs => |*r| r.name.slice(), 1402 .repo_issues => |*i| i.name.slice(), 1403 .repo_patches => |*p| p.name.slice(), 1404 .repo_discussions => |*t| t.name.slice(), 1405 .repo_events => |*e| e.name.slice(), 1406 .repo_undo => |*u| u.name.slice(), 1407 .repo_new_repo, .repo_new_user, .repo_user => |*name| name.slice(), 1408 else => null, 1409 }; 1410 } 1411 1412 pub fn forkRoute(self: *const RoutablePage) ?*const ForkRoute { 1413 return switch (self.*) { 1414 .fork_patch => |*f| f, 1415 .fork_diff => |*d| &d.fork, 1416 .fork_files => |*f| &f.fork, 1417 .fork_commits => |*f| &f.fork, 1418 .fork_new_repo => |*f| f, 1419 .fork_new_user => |*f| f, 1420 .fork_user => |*f| f, 1421 else => null, 1422 }; 1423 } 1424 1425 // the route this route's page lands on, with no tab or params: the users 1426 // list, a user's repos, or a repo's files root. 1427 pub fn pageRoot(self: RoutablePage) RoutablePage { 1428 return switch (self.parent()) { 1429 .home => .default, 1430 .user => switch (self) { 1431 .user_repos => |u| .{ .user_repos = .{ .name = u.name } }, 1432 .user_forks => |u| .{ .user_repos = .{ .name = u.name } }, 1433 .user_new_repo, .user_new_user, .user_user => |name| .{ .user_repos = .{ .name = name } }, 1434 else => self, 1435 }, 1436 // every repo route stores the same identity, so it always fits 1437 .repo => repoFilesRoute(self.repoIdentity() orelse return self, null, "", "", 0) orelse self, 1438 .fork => blk: { 1439 const f = self.forkRoute() orelse break :blk self; 1440 break :blk forkPatchRoute(f.name.slice(), f.id.slice()) orelse self; 1441 }, 1442 .not_found => self, 1443 }; 1444 } 1445 1446 pub fn parent(self: RoutablePage) PageKind { 1447 return switch (self) { 1448 .home_about, .home_users, .home_new_repo, .home_new_user, .home_user => .home, 1449 .user_repos, .user_forks, .user_new_repo, .user_new_user, .user_user => .user, 1450 .repo_files, .repo_commits, .repo_diff, .repo_refs, .repo_issues, .repo_patches, .repo_discussions, .repo_events, .repo_undo, .repo_new_repo, .repo_new_user, .repo_user => .repo, 1451 .fork_patch, .fork_diff, .fork_files, .fork_commits, .fork_new_repo, .fork_new_user, .fork_user => .fork, 1452 .not_found => .not_found, 1453 }; 1454 } 1455 1456 // the dir a trailing "path:<dir>" names: the raw remainder ("" when 1457 // absent, null when malformed) 1458 fn pathValue(rest: []const u8) ?[]const u8 { 1459 if (rest.len == 0) return ""; 1460 if (!std.mem.startsWith(u8, rest, path_seg)) return null; 1461 const dir = rest[path_seg.len..]; 1462 return if (dir.len == 0) null else dir; 1463 } 1464 1465 // a list route's tail: at most a "start:<n>" param, null on anything else 1466 fn listStart(segments: *std.mem.SplitIterator(u8, .scalar)) ?usize { 1467 const params = listParams(segments, &.{.start}) orelse return null; 1468 return params.start(); 1469 } 1470 1471 // a list route's tail of `allowed` params, null on anything else 1472 fn listParams(segments: *std.mem.SplitIterator(u8, .scalar), allowed: []const Params.ParamKey) ?Params { 1473 var params = Params{}; 1474 const word = params.scanTail(segments) catch return null; 1475 if (word != null or !params.only(allowed)) return null; 1476 return params; 1477 } 1478 1479 // a searchable list url's search and window segments, each optional 1480 fn writeListWindow(writer: *std.Io.Writer, search: []const u8, start: usize) !void { 1481 if (search.len != 0) try writer.print("/" ++ search_seg ++ "{s}", .{search}); 1482 if (start != 0) try writer.print("/" ++ start_seg ++ "{d}", .{start}); 1483 } 1484 1485 // parse the sub-path after a repo route's identity ("" for a local 1486 // route): a tab keyword followed by "key:value" params in any order, plus 1487 // the files tab's trailing "path:<dir>". 1488 fn repoSubRoute(pair: []const u8, sub: []const u8) ?RoutablePage { 1489 var segments = std.mem.splitScalar(u8, sub, '/'); 1490 const tab = segments.next() orelse return null; 1491 var params = Params{}; 1492 if (std.mem.eql(u8, tab, "new-repo")) return if (segments.next() == null) .{ .repo_new_repo = Array(repo_route_max_len).from(pair) orelse return null } else null; 1493 if (std.mem.eql(u8, tab, "new-user")) return if (segments.next() == null) .{ .repo_new_user = Array(repo_route_max_len).from(pair) orelse return null } else null; 1494 if (std.mem.eql(u8, tab, "user")) return if (segments.next() == null) .{ .repo_user = Array(repo_route_max_len).from(pair) orelse return null } else null; 1495 if (std.mem.eql(u8, tab, "refs")) { 1496 const word = params.scanTail(&segments) catch return null; 1497 if (word != null or !params.only(&.{ .branch, .tag, .search })) return null; 1498 const ref = params.ref() catch return null; 1499 const kind: RefKind = if (ref) |r| std.meta.stringToEnum(RefKind, @tagName(r.kind)) orelse return null else .branch; 1500 const from = if (ref) |r| r.value else ""; 1501 return withEncodedSearch(repoRefsRoute(pair, kind, from), params.values.get(.search) orelse ""); 1502 } 1503 if (std.mem.startsWith(u8, tab, issue_seg)) { 1504 const issue_id = tab[issue_seg.len..]; 1505 if (issue_id.len == 0) return null; 1506 if (segments.peek()) |tail| { 1507 if (std.mem.startsWith(u8, tail, comment_seg)) { 1508 _ = segments.next(); 1509 const comment_id = tail[comment_seg.len..]; 1510 if (comment_id.len == 0) return null; 1511 const word = params.scanTail(&segments) catch return null; 1512 if (word) |last| { 1513 if (!params.only(&.{})) return null; 1514 if (std.mem.eql(u8, last, "new")) return repoThreadCommentNewRoute(.issue, pair, issue_id, comment_id); 1515 if (std.mem.eql(u8, last, "edit")) return repoThreadCommentEditRoute(.issue, pair, issue_id, comment_id); 1516 if (std.mem.eql(u8, last, "remove")) return repoThreadRemoveRoute(.issue, pair, issue_id, comment_id); 1517 return null; 1518 } 1519 if (!params.only(&.{.start})) return null; 1520 return repoThreadCommentRoute(.issue, pair, issue_id, comment_id, params.start() orelse return null); 1521 } 1522 } 1523 const word = params.scanTail(&segments) catch return null; 1524 if (word) |tail| { 1525 if (std.mem.eql(u8, tail, "new")) return if (params.only(&.{})) repoThreadCommentNewRoute(.issue, pair, issue_id, "") else null; 1526 if (std.mem.eql(u8, tail, "edit")) return if (params.only(&.{})) repoThreadEditRoute(.issue, pair, issue_id) else null; 1527 if (std.mem.eql(u8, tail, "remove")) return if (params.only(&.{})) repoThreadRemoveRoute(.issue, pair, issue_id, "") else null; 1528 if (std.mem.eql(u8, tail, "description")) return if (params.only(&.{})) repoThreadDescriptionRoute(.issue, pair, issue_id) else null; 1529 if (std.mem.eql(u8, tail, "resolve")) { 1530 if (!params.only(&.{.theirs})) return null; 1531 return repoIssuesResolveRoute(pair, issue_id, params.values.get(.theirs) orelse ""); 1532 } 1533 return null; 1534 } 1535 if (!params.only(&.{ .start, .label, .search })) return null; 1536 return withEncodedFilters(repoThreadCommentsRoute(.issue, pair, issue_id, params.start() orelse return null), params.values.get(.label) orelse "", params.values.get(.search) orelse ""); 1537 } 1538 if (std.mem.startsWith(u8, tab, patch_seg)) { 1539 const patch_id = tab[patch_seg.len..]; 1540 if (patch_id.len == 0) return null; 1541 if (segments.peek()) |tail| { 1542 if (std.mem.startsWith(u8, tail, comment_seg)) { 1543 _ = segments.next(); 1544 const comment_id = tail[comment_seg.len..]; 1545 if (comment_id.len == 0) return null; 1546 const word = params.scanTail(&segments) catch return null; 1547 if (word) |last| { 1548 if (!params.only(&.{})) return null; 1549 if (std.mem.eql(u8, last, "new")) return repoThreadCommentNewRoute(.patch, pair, patch_id, comment_id); 1550 if (std.mem.eql(u8, last, "edit")) return repoThreadCommentEditRoute(.patch, pair, patch_id, comment_id); 1551 if (std.mem.eql(u8, last, "remove")) return repoThreadRemoveRoute(.patch, pair, patch_id, comment_id); 1552 return null; 1553 } 1554 if (!params.only(&.{.start})) return null; 1555 return repoThreadCommentRoute(.patch, pair, patch_id, comment_id, params.start() orelse return null); 1556 } 1557 } 1558 const word = params.scanTail(&segments) catch return null; 1559 if (word) |tail| { 1560 if (std.mem.eql(u8, tail, "new")) return if (params.only(&.{})) repoThreadCommentNewRoute(.patch, pair, patch_id, "") else null; 1561 if (std.mem.eql(u8, tail, "edit")) return if (params.only(&.{})) repoThreadEditRoute(.patch, pair, patch_id) else null; 1562 if (std.mem.eql(u8, tail, "publish")) return if (params.only(&.{})) repoPatchPublishRoute(pair, patch_id) else null; 1563 if (std.mem.eql(u8, tail, "merge")) return if (params.only(&.{})) repoPatchMergeRoute(pair, patch_id) else null; 1564 if (std.mem.eql(u8, tail, "remove")) return if (params.only(&.{})) repoThreadRemoveRoute(.patch, pair, patch_id, "") else null; 1565 if (std.mem.eql(u8, tail, "description")) return if (params.only(&.{})) repoThreadDescriptionRoute(.patch, pair, patch_id) else null; 1566 if (std.mem.eql(u8, tail, "resolve")) { 1567 if (!params.only(&.{.theirs})) return null; 1568 return repoPatchesResolveRoute(pair, patch_id, params.values.get(.theirs) orelse ""); 1569 } 1570 return null; 1571 } 1572 if (!params.only(&.{ .start, .label, .search })) return null; 1573 return withEncodedFilters(repoThreadCommentsRoute(.patch, pair, patch_id, params.start() orelse return null), params.values.get(.label) orelse "", params.values.get(.search) orelse ""); 1574 } 1575 if (std.mem.startsWith(u8, tab, discuss_seg)) { 1576 const discussion_id = tab[discuss_seg.len..]; 1577 if (discussion_id.len == 0) return null; 1578 if (segments.peek()) |tail| { 1579 if (std.mem.startsWith(u8, tail, comment_seg)) { 1580 _ = segments.next(); 1581 const comment_id = tail[comment_seg.len..]; 1582 if (comment_id.len == 0) return null; 1583 const word = params.scanTail(&segments) catch return null; 1584 if (word) |last| { 1585 if (!params.only(&.{})) return null; 1586 if (std.mem.eql(u8, last, "new")) return repoThreadCommentNewRoute(.discuss, pair, discussion_id, comment_id); 1587 if (std.mem.eql(u8, last, "edit")) return repoThreadCommentEditRoute(.discuss, pair, discussion_id, comment_id); 1588 if (std.mem.eql(u8, last, "remove")) return repoThreadRemoveRoute(.discuss, pair, discussion_id, comment_id); 1589 return null; 1590 } 1591 if (!params.only(&.{.start})) return null; 1592 return repoThreadCommentRoute(.discuss, pair, discussion_id, comment_id, params.start() orelse return null); 1593 } 1594 } 1595 const word = params.scanTail(&segments) catch return null; 1596 if (word) |tail| { 1597 if (std.mem.eql(u8, tail, "new")) return if (params.only(&.{})) repoThreadCommentNewRoute(.discuss, pair, discussion_id, "") else null; 1598 if (std.mem.eql(u8, tail, "edit")) return if (params.only(&.{})) repoThreadEditRoute(.discuss, pair, discussion_id) else null; 1599 if (std.mem.eql(u8, tail, "remove")) return if (params.only(&.{})) repoThreadRemoveRoute(.discuss, pair, discussion_id, "") else null; 1600 if (std.mem.eql(u8, tail, "description")) return if (params.only(&.{})) repoThreadDescriptionRoute(.discuss, pair, discussion_id) else null; 1601 return null; 1602 } 1603 if (!params.only(&.{ .start, .label, .search })) return null; 1604 return withEncodedFilters(repoThreadCommentsRoute(.discuss, pair, discussion_id, params.start() orelse return null), params.values.get(.label) orelse "", params.values.get(.search) orelse ""); 1605 } 1606 if (std.mem.eql(u8, tab, "issues")) { 1607 // the word is a list view; a filter with neither is never emitted. 1608 const word = params.scanTail(&segments) catch return null; 1609 const label_value = params.values.get(.label) orelse ""; 1610 const w = word orelse return if (params.only(&.{})) repoIssuesRoute(pair, .open, "", "") else null; 1611 // the conflicts list windows by an issue id, not a number, so it 1612 // reads the start param raw 1613 if (std.mem.eql(u8, w, "conflicts")) { 1614 if (!params.only(&.{.start})) return null; 1615 return repoIssuesConflictsRoute(pair, params.values.get(.start) orelse ""); 1616 } 1617 if (!params.only(&.{ .label, .search })) return null; 1618 const search_value = params.values.get(.search) orelse ""; 1619 if (std.meta.stringToEnum(evt.Issue.Status, w)) |status| return withEncodedSearch(repoIssuesRoute(pair, status, label_value, ""), search_value); 1620 if (std.mem.eql(u8, w, "labels")) return withEncodedSearch(repoThreadLabelsRoute(.issue, pair, label_value), search_value); 1621 if (std.mem.eql(u8, w, "new")) return if (label_value.len == 0 and search_value.len == 0) repoThreadNewRoute(.issue, pair) else null; 1622 return null; 1623 } 1624 if (std.mem.eql(u8, tab, "patches")) { 1625 const word = params.scanTail(&segments) catch return null; 1626 const label_value = params.values.get(.label) orelse ""; 1627 const view = word orelse return if (params.only(&.{})) repoPatchesRoute(pair, .open, "", "") else null; 1628 if (std.mem.eql(u8, view, "conflicts")) { 1629 if (!params.only(&.{.start})) return null; 1630 return repoPatchesConflictsRoute(pair, params.values.get(.start) orelse ""); 1631 } 1632 if (!params.only(&.{ .label, .search })) return null; 1633 const search_value = params.values.get(.search) orelse ""; 1634 if (std.meta.stringToEnum(evt.Patch.StatusKind, view)) |status| return withEncodedSearch(repoPatchesRoute(pair, status, label_value, ""), search_value); 1635 if (std.mem.eql(u8, view, "labels")) return withEncodedSearch(repoThreadLabelsRoute(.patch, pair, label_value), search_value); 1636 if (std.mem.eql(u8, view, "new")) return if (label_value.len == 0 and search_value.len == 0) repoThreadNewRoute(.patch, pair) else null; 1637 if (std.mem.eql(u8, view, "drafts")) return if (label_value.len == 0 and search_value.len == 0) repoPatchesDraftsRoute(pair) else null; 1638 return null; 1639 } 1640 if (std.mem.eql(u8, tab, "discussions")) { 1641 const word = params.scanTail(&segments) catch return null; 1642 const label_value = params.values.get(.label) orelse ""; 1643 const view = word orelse return if (params.only(&.{})) repoDiscussionsRoute(pair, "", "") else null; 1644 if (!params.only(&.{ .label, .search })) return null; 1645 const search_value = params.values.get(.search) orelse ""; 1646 if (std.mem.eql(u8, view, "recent")) return withEncodedSearch(repoDiscussionsRoute(pair, label_value, ""), search_value); 1647 if (std.mem.eql(u8, view, "labels")) return withEncodedSearch(repoThreadLabelsRoute(.discuss, pair, label_value), search_value); 1648 if (std.mem.eql(u8, view, "new")) return if (label_value.len == 0 and search_value.len == 0) repoThreadNewRoute(.discuss, pair) else null; 1649 return null; 1650 } 1651 if (std.mem.eql(u8, tab, "undo")) { 1652 const word = segments.next(); 1653 if (segments.next() != null) return null; 1654 const value = word orelse return repoUndoRoute(pair, null); 1655 if (std.mem.eql(u8, value, "clear")) return repoUndoClearRoute(pair); 1656 return repoUndoRoute(pair, std.fmt.parseInt(u64, value, 10) catch return null); 1657 } 1658 if (std.mem.eql(u8, tab, "events")) { 1659 const word = params.scanTail(&segments) catch return null; 1660 if (!params.only(&.{.moment})) return null; 1661 const view = if (word) |value| std.meta.stringToEnum(EventsView, value) orelse return null else .active; 1662 return repoEventsRoute(pair, view, null, "", params.moment() catch return null); 1663 } 1664 if (std.mem.startsWith(u8, tab, "event:")) { 1665 const event_id = tab["event:".len..]; 1666 const kind_segment = segments.next() orelse return null; 1667 if (!std.mem.startsWith(u8, kind_segment, "kind:")) return null; 1668 const kind = std.meta.stringToEnum(evt.EventKind, kind_segment["kind:".len..]) orelse return null; 1669 if (event_id.len == 0) return null; 1670 params.scanPairs(&segments) catch return null; 1671 if (!params.only(&.{.moment}) or segments.next() != null) return null; 1672 return repoEventsRoute(pair, .active, kind, event_id, params.moment() catch return null); 1673 } 1674 if (std.mem.eql(u8, tab, files_seg)) { 1675 params.scanPairs(&segments) catch return null; 1676 if (params.values.get(.patchrev)) |id| { 1677 if (!params.only(&.{ .line, .patchrev })) return null; 1678 return repoPatchRevFilesRoute(pair, id, pathValue(segments.rest()) orelse return null, params.line() orelse return null); 1679 } 1680 if (!params.only(&.{ .line, .branch, .tag, .object, .find })) return null; 1681 const line = params.line() orelse return null; 1682 const dir = pathValue(segments.rest()) orelse return null; 1683 const find = params.values.get(.find) orelse ""; 1684 const ref = params.ref() catch return null; 1685 // a find route's `path` names the selected result, so unlike a 1686 // directory path it doesn't need a ref beside it 1687 var route = if (ref) |r| 1688 repoFilesRoute(pair, r.kind, r.value, dir, line) orelse return null 1689 else if (dir.len == 0 or find.len != 0) 1690 repoFilesRoute(pair, null, "", "", line) orelse return null 1691 else 1692 return null; 1693 if (find.len != 0) { 1694 route.repo_files.find = Array(find_route_max_len).from(find) orelse return null; 1695 route.repo_files.path = Array(repo_route_max_len).from(dir) orelse return null; 1696 } 1697 return route; 1698 } 1699 if (std.mem.eql(u8, tab, commits_seg)) { 1700 params.scanPairs(&segments) catch return null; 1701 if (params.values.get(.merge)) |oid| { 1702 if (!params.only(&.{.merge}) or segments.next() != null) return null; 1703 return repoCommitsMergeRoute(pair, oid); 1704 } 1705 if (!params.only(&.{ .branch, .tag, .object, .base, .search, .from })) return null; 1706 const base_oid = params.values.get(.base) orelse ""; 1707 const search = params.values.get(.search) orelse ""; 1708 const from = params.values.get(.from) orelse ""; 1709 const ref = (params.ref() catch return null) orelse { 1710 if (search.len != 0 or from.len != 0 or segments.rest().len != 0) return null; 1711 return repoCommitsRoute(pair, null, "", base_oid); 1712 }; 1713 // the index covers branch and tag tips, so only they can be 1714 // searched or paged by commit; an object roots the list itself 1715 if ((search.len != 0 or from.len != 0) and ref.kind == .object) return null; 1716 var route = if (std.mem.eql(u8, segments.rest(), message_seg)) 1717 repoCommitMessageRoute(pair, ref.kind, ref.value, base_oid) orelse return null 1718 else if (segments.rest().len == 0) 1719 repoCommitsRoute(pair, ref.kind, ref.value, base_oid) orelse return null 1720 else 1721 return null; 1722 if (search.len != 0) route.repo_commits.search = Array(search_route_max_len).from(search) orelse return null; 1723 if (from.len != 0) route.repo_commits.from = Array(ref_route_max_len).from(from) orelse return null; 1724 return route; 1725 } 1726 if (std.mem.eql(u8, tab, "diff")) { 1727 params.scanPairs(&segments) catch return null; 1728 if (params.values.get(.patchrev)) |id| { 1729 if (!params.only(&.{ .start, .patchrev })) return null; 1730 return repoPatchRevDiffRoute(pair, id, params.start() orelse return null, pathValue(segments.rest()) orelse return null); 1731 } 1732 if (!params.only(&.{ .start, .branch, .tag, .object, .base })) return null; 1733 const base_oid = params.values.get(.base) orelse return null; 1734 const start = params.start() orelse return null; 1735 const ref = params.ref() catch return null; 1736 const file = pathValue(segments.rest()) orelse return null; 1737 return repoDiffRoute(pair, if (ref) |r| r.kind else null, if (ref) |r| r.value else "", start, file, base_oid); 1738 } 1739 return null; // unknown sub-path 1740 } 1741 1742 pub fn eql(a: RoutablePage, b: RoutablePage) bool { 1743 if (std.meta.activeTag(a) != std.meta.activeTag(b)) return false; 1744 return switch (a) { 1745 .home_users => |a_u| a_u.start == b.home_users.start and std.mem.eql(u8, a_u.search.slice(), b.home_users.search.slice()), 1746 .user_repos => |a_u| std.mem.eql(u8, a_u.name.slice(), b.user_repos.name.slice()) and a_u.start == b.user_repos.start and std.mem.eql(u8, a_u.search.slice(), b.user_repos.search.slice()), 1747 .user_forks => |a_u| std.mem.eql(u8, a_u.name.slice(), b.user_forks.name.slice()) and a_u.start == b.user_forks.start, 1748 .user_new_repo => |a_name| std.mem.eql(u8, a_name.slice(), b.user_new_repo.slice()), 1749 .user_new_user => |a_name| std.mem.eql(u8, a_name.slice(), b.user_new_user.slice()), 1750 .user_user => |a_name| std.mem.eql(u8, a_name.slice(), b.user_user.slice()), 1751 .repo_files => |a_f| std.mem.eql(u8, a_f.name.slice(), b.repo_files.name.slice()) and 1752 a_f.ref_kind == b.repo_files.ref_kind and 1753 std.mem.eql(u8, a_f.ref_value.slice(), b.repo_files.ref_value.slice()) and 1754 std.mem.eql(u8, a_f.patchrev_id.slice(), b.repo_files.patchrev_id.slice()) and 1755 std.mem.eql(u8, a_f.find.slice(), b.repo_files.find.slice()) and 1756 std.mem.eql(u8, a_f.path.slice(), b.repo_files.path.slice()) and 1757 a_f.line == b.repo_files.line, 1758 .repo_commits => |a_c| std.mem.eql(u8, a_c.name.slice(), b.repo_commits.name.slice()) and 1759 a_c.ref_or_oid == b.repo_commits.ref_or_oid and 1760 std.mem.eql(u8, a_c.value.slice(), b.repo_commits.value.slice()) and 1761 std.mem.eql(u8, a_c.base_oid.slice(), b.repo_commits.base_oid.slice()) and 1762 std.mem.eql(u8, a_c.search.slice(), b.repo_commits.search.slice()) and 1763 std.mem.eql(u8, a_c.from.slice(), b.repo_commits.from.slice()) and 1764 std.mem.eql(u8, a_c.merge.slice(), b.repo_commits.merge.slice()) and 1765 a_c.message == b.repo_commits.message, 1766 .repo_diff => |a_d| std.mem.eql(u8, a_d.name.slice(), b.repo_diff.name.slice()) and 1767 a_d.ref_or_oid == b.repo_diff.ref_or_oid and 1768 std.mem.eql(u8, a_d.value.slice(), b.repo_diff.value.slice()) and 1769 std.mem.eql(u8, a_d.base_oid.slice(), b.repo_diff.base_oid.slice()) and 1770 std.mem.eql(u8, a_d.patchrev_id.slice(), b.repo_diff.patchrev_id.slice()) and 1771 a_d.start == b.repo_diff.start and std.mem.eql(u8, a_d.path.slice(), b.repo_diff.path.slice()), 1772 .repo_refs => |a_r| std.mem.eql(u8, a_r.name.slice(), b.repo_refs.name.slice()) and a_r.kind == b.repo_refs.kind and std.mem.eql(u8, a_r.from.slice(), b.repo_refs.from.slice()) and std.mem.eql(u8, a_r.search.slice(), b.repo_refs.search.slice()), 1773 .repo_issues => |a_i| std.mem.eql(u8, a_i.name.slice(), b.repo_issues.name.slice()) and 1774 std.mem.eql(u8, a_i.label.slice(), b.repo_issues.label.slice()) and 1775 std.mem.eql(u8, a_i.search.slice(), b.repo_issues.search.slice()) and 1776 std.mem.eql(u8, a_i.selected.slice(), b.repo_issues.selected.slice()) and 1777 std.mem.eql(u8, a_i.theirs.slice(), b.repo_issues.theirs.slice()) and 1778 a_i.view == b.repo_issues.view and 1779 a_i.comments_start == b.repo_issues.comments_start and 1780 std.mem.eql(u8, a_i.comment.slice(), b.repo_issues.comment.slice()), 1781 .repo_discussions => |a_t| std.mem.eql(u8, a_t.name.slice(), b.repo_discussions.name.slice()) and 1782 std.mem.eql(u8, a_t.label.slice(), b.repo_discussions.label.slice()) and 1783 std.mem.eql(u8, a_t.search.slice(), b.repo_discussions.search.slice()) and 1784 std.mem.eql(u8, a_t.selected.slice(), b.repo_discussions.selected.slice()) and 1785 a_t.view == b.repo_discussions.view and 1786 a_t.comments_start == b.repo_discussions.comments_start and 1787 std.mem.eql(u8, a_t.comment.slice(), b.repo_discussions.comment.slice()), 1788 .repo_patches => |a_p| std.mem.eql(u8, a_p.name.slice(), b.repo_patches.name.slice()) and 1789 std.mem.eql(u8, a_p.label.slice(), b.repo_patches.label.slice()) and 1790 std.mem.eql(u8, a_p.search.slice(), b.repo_patches.search.slice()) and 1791 std.mem.eql(u8, a_p.selected.slice(), b.repo_patches.selected.slice()) and 1792 std.mem.eql(u8, a_p.theirs.slice(), b.repo_patches.theirs.slice()) and 1793 a_p.view == b.repo_patches.view and 1794 a_p.comments_start == b.repo_patches.comments_start and 1795 std.mem.eql(u8, a_p.comment.slice(), b.repo_patches.comment.slice()), 1796 .repo_undo => |a_u| std.mem.eql(u8, a_u.name.slice(), b.repo_undo.name.slice()) and 1797 a_u.index == b.repo_undo.index and 1798 a_u.clear == b.repo_undo.clear, 1799 .repo_events => |a_e| std.mem.eql(u8, a_e.name.slice(), b.repo_events.name.slice()) and 1800 a_e.view == b.repo_events.view and 1801 a_e.moment == b.repo_events.moment and 1802 a_e.kind == b.repo_events.kind and 1803 std.mem.eql(u8, a_e.selected.slice(), b.repo_events.selected.slice()), 1804 .repo_new_repo => |a_name| std.mem.eql(u8, a_name.slice(), b.repo_new_repo.slice()), 1805 .repo_new_user => |a_name| std.mem.eql(u8, a_name.slice(), b.repo_new_user.slice()), 1806 .repo_user => |a_name| std.mem.eql(u8, a_name.slice(), b.repo_user.slice()), 1807 .fork_patch => |a_f| std.mem.eql(u8, a_f.name.slice(), b.fork_patch.name.slice()) and std.mem.eql(u8, a_f.id.slice(), b.fork_patch.id.slice()), 1808 .fork_diff => |a_d| std.mem.eql(u8, a_d.fork.name.slice(), b.fork_diff.fork.name.slice()) and 1809 std.mem.eql(u8, a_d.fork.id.slice(), b.fork_diff.fork.id.slice()) and 1810 std.mem.eql(u8, a_d.oid.slice(), b.fork_diff.oid.slice()) and 1811 std.mem.eql(u8, a_d.base_oid.slice(), b.fork_diff.base_oid.slice()) and 1812 a_d.start == b.fork_diff.start and std.mem.eql(u8, a_d.path.slice(), b.fork_diff.path.slice()), 1813 .fork_files => |a_f| std.mem.eql(u8, a_f.fork.name.slice(), b.fork_files.fork.name.slice()) and 1814 std.mem.eql(u8, a_f.fork.id.slice(), b.fork_files.fork.id.slice()) and 1815 std.mem.eql(u8, a_f.oid.slice(), b.fork_files.oid.slice()) and 1816 std.mem.eql(u8, a_f.find.slice(), b.fork_files.find.slice()) and 1817 std.mem.eql(u8, a_f.path.slice(), b.fork_files.path.slice()) and 1818 a_f.line == b.fork_files.line, 1819 .fork_commits => |a_c| std.mem.eql(u8, a_c.fork.name.slice(), b.fork_commits.fork.name.slice()) and 1820 std.mem.eql(u8, a_c.fork.id.slice(), b.fork_commits.fork.id.slice()) and 1821 std.mem.eql(u8, a_c.oid.slice(), b.fork_commits.oid.slice()) and 1822 a_c.message == b.fork_commits.message, 1823 .fork_new_repo => |a_f| std.mem.eql(u8, a_f.name.slice(), b.fork_new_repo.name.slice()) and std.mem.eql(u8, a_f.id.slice(), b.fork_new_repo.id.slice()), 1824 .fork_new_user => |a_f| std.mem.eql(u8, a_f.name.slice(), b.fork_new_user.name.slice()) and std.mem.eql(u8, a_f.id.slice(), b.fork_new_user.id.slice()), 1825 .fork_user => |a_f| std.mem.eql(u8, a_f.name.slice(), b.fork_user.name.slice()) and std.mem.eql(u8, a_f.id.slice(), b.fork_user.id.slice()), 1826 else => true, 1827 }; 1828 } 1829 1830 // true when following a link from `b` to `a` (both repo routes) should reload 1831 // rather than stay in page 1832 pub fn repoPageChanged(a: RoutablePage, b: RoutablePage) bool { 1833 if (a.parent() != .repo or b.parent() != .repo) return false; 1834 if (std.meta.activeTag(a) == .repo_refs and std.meta.activeTag(b) == .repo_refs and 1835 a.repo_refs.from.len == 0 and b.repo_refs.from.len == 0) 1836 return !std.mem.eql(u8, a.repo_refs.name.slice(), b.repo_refs.name.slice()); 1837 return !a.eql(b); 1838 } 1839 1840 pub fn forkPageChanged(a: RoutablePage, b: RoutablePage) bool { 1841 return a.parent() == .fork and b.parent() == .fork and !a.eql(b); 1842 } 1843 1844 // true when `a` and `b` are the same user paginated to a different repos 1845 // window or search. switching between a user's tabs is in-page, so only a 1846 // changed `start` or search on the same list navigates. 1847 pub fn userPageChanged(a: RoutablePage, b: RoutablePage) bool { 1848 return switch (a) { 1849 .user_repos => |aa| switch (b) { 1850 .user_repos => |bb| std.mem.eql(u8, aa.name.slice(), bb.name.slice()) and !a.eql(b), 1851 else => false, 1852 }, 1853 .user_forks => |aa| switch (b) { 1854 .user_forks => |bb| std.mem.eql(u8, aa.name.slice(), bb.name.slice()) and aa.start != bb.start, 1855 else => false, 1856 }, 1857 else => false, 1858 }; 1859 } 1860 1861 // true when `a` and `b` are the same home list tab paginated to a different 1862 // window or search. switching tabs is in-page, so only a changed `start` or 1863 // search on the same tab navigates. 1864 pub fn homePageChanged(a: RoutablePage, b: RoutablePage) bool { 1865 return switch (a) { 1866 .home_users => switch (b) { 1867 .home_users => !a.eql(b), 1868 else => false, 1869 }, 1870 else => false, 1871 }; 1872 } 1873 }; 1874 1875 // a `RefOrOid` resolved against an on-disk repo to the commit oid it points at 1876 fn isUnreserved(c: u8) bool { 1877 return std.ascii.isAlphanumeric(c) or c == '-' or c == '.' or c == '_' or c == '~'; 1878 } 1879 1880 // percent-encode a ref name for use as a single url path segment. 1881 pub fn urlEncodeRef(aa: std.mem.Allocator, raw: []const u8) ![]const u8 { 1882 var out: std.Io.Writer.Allocating = .init(aa); 1883 try std.Uri.Component.percentEncode(&out.writer, raw, isUnreserved); 1884 return out.written(); 1885 } 1886 1887 // a resolved ref/oid for a repo opened with `repo_kind`/`repo_opts` 1888 pub fn ResolvedRefOrOid(comptime repo_kind: rp.RepoKind, comptime repo_opts: rp.RepoOpts(repo_kind)) type { 1889 return struct { 1890 pub const hex_len = hash.hexLen(repo_opts.hash); 1891 1892 // the concrete ref/oid (a null request resolves to the default branch) 1893 ref_or_oid: RoutablePage.RefOrOid, 1894 // its branch/tag name or oid, url-encoded (ref names may contain '/', so 1895 // the route layer — which splits on '/' — stores them encoded). duped 1896 // into `aa`. 1897 value: []const u8, 1898 // the commit oid it points at 1899 oid: [hex_len]u8, 1900 1901 const Self = @This(); 1902 1903 // resolve a requested ref/oid (null = the repo's default branch) to a 1904 // concrete ref/oid plus the commit oid it points at. `requested_value` is 1905 // the url-encoded form (as it appears in the route). null when it doesn't 1906 // resolve (an unknown branch/tag, or a malformed/unknown oid). 1907 pub fn init( 1908 repo: *rp.Repo(repo_kind, repo_opts), 1909 io: std.Io, 1910 aa: std.mem.Allocator, 1911 requested_ref_or_oid: ?RoutablePage.RefOrOid, 1912 requested_value: []const u8, 1913 ) !?Self { 1914 var ref_or_oid: RoutablePage.RefOrOid = requested_ref_or_oid orelse .branch; 1915 // the decoded ref name / oid to look up. a named ref arrives url-encoded. 1916 var value: []const u8 = if (requested_ref_or_oid == null) 1917 requested_value 1918 else 1919 std.Uri.percentDecodeInPlace(try aa.dupe(u8, requested_value)); 1920 // no ref named: fall back to HEAD's branch (or its oid when detached). 1921 if (requested_ref_or_oid == null) { 1922 var head_buf: [rf.MAX_REF_CONTENT_SIZE]u8 = undefined; 1923 if (repo.head(io, &head_buf)) |head| switch (head) { 1924 .ref => |r| { 1925 ref_or_oid = .branch; 1926 value = r.name; 1927 }, 1928 .oid => |o| { 1929 ref_or_oid = .object; 1930 value = o; 1931 }, 1932 } else |_| {} 1933 } 1934 1935 var oid: [hex_len]u8 = undefined; 1936 switch (ref_or_oid) { 1937 .object => { 1938 if (value.len != hex_len) return null; 1939 @memcpy(&oid, value); 1940 }, 1941 .branch, .tag => { 1942 const ref_kind: rf.RefKind = if (ref_or_oid == .branch) .head else .tag; 1943 oid = (repo.readRef(io, .{ .kind = ref_kind, .name = value }) catch null) orelse return null; 1944 }, 1945 } 1946 // store url-encoded so the route layer can hold the value verbatim. 1947 return .{ .ref_or_oid = ref_or_oid, .value = try urlEncodeRef(aa, value), .oid = oid }; 1948 } 1949 }; 1950 } 1951 1952 // who a repo page is built for, which picks the actions it shows 1953 pub const Viewer = struct { 1954 role: evt.Repo.Role, 1955 email: []const u8, 1956 1957 // the session's viewer of a repo it holds `role` in, or null when logged 1958 // out. local mode owns everything. 1959 pub fn init(session: *Session, arena: *std.heap.ArenaAllocator, role: evt.Repo.Role) !?Viewer { 1960 if (session.data.host_kind == .local) return .{ .role = .owner, .email = "" }; 1961 const user_id = session.userId() orelse return null; 1962 const moment = session.haxy_moment orelse unreachable; 1963 const user = (try activeUser(moment, arena, user_id)) orelse return null; 1964 return .{ .role = role, .email = user.event.email }; 1965 } 1966 }; 1967 1968 // a repo a page shows, and what its viewer may do there 1969 pub const RepoHandle = struct { 1970 location: RoutablePage.RepoLocation, 1971 viewer: ?Viewer = null, 1972 1973 pub fn dupe(self: RepoHandle, allocator: std.mem.Allocator) !RepoHandle { 1974 var copy = self; 1975 copy.location = try self.location.dupe(allocator); 1976 return copy; 1977 } 1978 1979 // pushing, and seeing the events and undo tabs. local mode is always owner. 1980 pub fn canWrite(self: RepoHandle) bool { 1981 const viewer = self.viewer orelse return false; 1982 return viewer.role.atLeast(.write); 1983 } 1984 1985 pub fn canUndo(self: RepoHandle) bool { 1986 const viewer = self.viewer orelse return false; 1987 return viewer.role == .owner; 1988 } 1989 }; 1990 1991 // where a repo page reads its on-disk repo from 1992 pub const RepoSource = struct { 1993 path: []const u8, 1994 repo_kind: rp.RepoKind, 1995 // the user's global git config, so local mode picks up their identity and 1996 // their signing and ssh settings. null on the server paths, which must not 1997 // read whoever runs the server. 1998 global_config_path: ?[]const u8 = null, 1999 2000 pub fn localInitOpts(self: RepoSource) rp.InitOpts { 2001 return .{ .path = self.path, .global_config_path = self.global_config_path }; 2002 } 2003 2004 pub fn hasBranch(self: RepoSource, io: std.Io, allocator: std.mem.Allocator, branch: []const u8) !bool { 2005 if (!xit.ref.validateName(branch)) return false; 2006 return switch (self.repo_kind) { 2007 inline else => |repo_kind| blk: { 2008 var any_repo = try rp.AnyRepo(repo_kind, .{}).open(io, allocator, self.localInitOpts()); 2009 defer any_repo.deinit(io, allocator); 2010 break :blk switch (any_repo) { 2011 inline else => |*repo| (try repo.readRef(io, .{ .kind = .head, .name = branch })) != null, 2012 }; 2013 }, 2014 }; 2015 } 2016 2017 // whether the actor may change the event `id` names 2018 pub fn canModify( 2019 self: RepoSource, 2020 io: std.Io, 2021 allocator: std.mem.Allocator, 2022 actor: Actor, 2023 kind: evt.EventKind, 2024 id: *const [evt.event_id_size]u8, 2025 ) !bool { 2026 // a role that may change an event with no author needs no read 2027 if (actor.role.canModify(actor.author.email, null)) return true; 2028 2029 var arena = std.heap.ArenaAllocator.init(allocator); 2030 defer arena.deinit(); 2031 return switch (self.repo_kind) { 2032 inline else => |repo_kind| blk: { 2033 var any_repo = try rp.AnyRepo(repo_kind, .{}).open(io, allocator, self.localInitOpts()); 2034 defer any_repo.deinit(io, allocator); 2035 break :blk switch (any_repo) { 2036 inline else => |*repo| actor.role.canModify(actor.author.email, try evt.readAuthorEmail(repo_kind, repo.self_repo_opts, io, allocator, &arena, repo, kind, id)), 2037 }; 2038 }, 2039 }; 2040 } 2041 }; 2042 2043 // who a write acts as and the role they hold in its repo 2044 pub const Actor = struct { 2045 author: evt.CommitAuthor, 2046 // local mode has no accounts, so it has no user id 2047 user_id: ?[evt.event_id_size]u8 = null, 2048 role: evt.Repo.Role, 2049 // the repo owner's id, which local mode lacks 2050 repo_user_id: ?[evt.event_id_size]u8 = null, 2051 }; 2052 2053 pub const Authorization = union(enum) { 2054 actor: Actor, 2055 login_required, 2056 repo_not_found, 2057 forbidden, 2058 }; 2059 2060 // the account `user_id` names, or null once it has been removed. a user id is 2061 // checked here wherever one enters, so the role lookups can trust theirs. 2062 pub fn activeUser( 2063 moment: evt.AdminDB.HashMap(.read_only), 2064 arena: *std.heap.ArenaAllocator, 2065 user_id: [evt.event_id_size]u8, 2066 ) !?evt.User.Record { 2067 const user = (try evt.User.readById(evt.AdminDB, evt.admin_repo_opts.hash, moment, arena, &user_id)) orelse return null; 2068 return if (user.removed) null else user; 2069 } 2070 2071 // whether the user may write to the repo `identity` names with at least 2072 // `min_role` 2073 pub fn authorizeUser( 2074 io: std.Io, 2075 moment: evt.AdminDB.HashMap(.read_only), 2076 arena: *std.heap.ArenaAllocator, 2077 users_dir: []const u8, 2078 user_id: [evt.event_id_size]u8, 2079 identity: []const u8, 2080 min_role: evt.Repo.Role, 2081 ) !Authorization { 2082 const user = (try activeUser(moment, arena, user_id)) orelse return .login_required; 2083 2084 const owner_repo = evt.parseOwnerRepoPath(identity) orelse return .repo_not_found; 2085 const repo = (try evt.readRepoByOwnerAndName(io, arena.child_allocator, arena, moment, users_dir, owner_repo.owner, owner_repo.name, user_id)) orelse return .repo_not_found; 2086 const role = repo.role; 2087 // a repo the user can't read doesn't exist to them 2088 if (role == .none) return .repo_not_found; 2089 if (!role.atLeast(min_role)) return .forbidden; 2090 return .{ .actor = .{ 2091 .author = .{ .name = user.event.name, .email = user.event.email }, 2092 .user_id = user_id, 2093 .role = role, 2094 .repo_user_id = repo.repo.event.user_id[0..evt.event_id_size].*, 2095 } }; 2096 } 2097 2098 // events created in local mode have no account behind them, so the commit 2099 // author comes from the repo's config, which the global config feeds into. 2100 pub const local_author_fallback = evt.CommitAuthor{ .name = "haxy", .email = "user@haxy" }; 2101 2102 pub fn localAuthor( 2103 src: RepoSource, 2104 io: std.Io, 2105 allocator: std.mem.Allocator, 2106 arena: *std.heap.ArenaAllocator, 2107 ) !evt.CommitAuthor { 2108 switch (src.repo_kind) { 2109 inline else => |repo_kind| { 2110 var any_repo = rp.AnyRepo(repo_kind, .{}).open(io, allocator, src.localInitOpts()) catch return local_author_fallback; 2111 defer any_repo.deinit(io, allocator); 2112 2113 switch (any_repo) { 2114 inline else => |*repo| { 2115 var config = try repo.listConfig(io, allocator); 2116 defer config.deinit(); 2117 2118 const user = config.sections.get("user") orelse return local_author_fallback; 2119 const name = user.get("name") orelse return local_author_fallback; 2120 const email = user.get("email") orelse return local_author_fallback; 2121 return .{ 2122 .name = try arena.allocator().dupe(u8, name), 2123 .email = try arena.allocator().dupe(u8, email), 2124 }; 2125 }, 2126 } 2127 }, 2128 } 2129 } 2130 2131 // per-connection mutable state. each SSH session / web session / local TUI 2132 // run gets its own. 2133 pub const Session = struct { 2134 data: Data = .{}, 2135 // session-lifetime allocations: login/user_id, persisted prefs, queued 2136 // actions. lives as long as the connection. 2137 arena: *std.heap.ArenaAllocator, 2138 // current page's allocations: page data and the page-scoped strings widgets 2139 // build (form actions, links). owned by Nav, swapped on each navigation, so 2140 // it doesn't accumulate over a long-lived session. on the web/wasm paths, 2141 // where a render is one-shot, this points at the same arena as `arena`. 2142 page_arena: *std.heap.ArenaAllocator, 2143 haxy_moment: ?evt.AdminDB.HashMap(.read_only) = null, // db cursor (null on the wasm side) 2144 // filesystem io and the path to <server>/repos, for opening on-disk repos 2145 // during page construction. both null on wasm, which has no filesystem and 2146 // rebuilds pages from the serialized snapshot rather than from disk. 2147 io: ?std.Io = null, 2148 admin_repo: ?*rp.Repo(.xit, evt.admin_repo_opts) = null, 2149 users_dir: ?[]const u8 = null, 2150 // the single on-disk repo this session views, when running in local mode 2151 // (haxy invoked with no arguments inside a repo). null on the server paths, 2152 // which resolve repos from the admin db instead. 2153 local: ?RepoSource = null, 2154 // focus id -> the live TextInput, refreshed each frame by the views that own 2155 // inputs. web/wasm form handling looks widgets up here by focus id. 2156 text_inputs: std.AutoHashMapUnmanaged(usize, *wgt.TextInput) = .empty, 2157 back: enum { unavailable, available, requested } = .unavailable, 2158 refresh_requested: bool = false, // set by input (ctrl+r) 2159 // a requested forward navigation. set this (via navigate) to move to a new 2160 // page; Nav.sync builds it and then copies it into current_page, clearing 2161 // this back to null. setting current_page directly only updates the url and 2162 // does not navigate. 2163 next_page: ?RoutablePage = null, 2164 is_terminal: bool = false, // true on remote SSH and local TUI 2165 // the terminal's reported default background, which the art blends toward 2166 terminal_background: ?Grid.Color.Rgb = null, 2167 // port the web UI is served on, for the TUI/SSH footer's "http://localhost:<port>..." 2168 // url. null on the web itself (no footer there). 2169 web_port: ?u16 = null, 2170 // a host operation requested by a widget 2171 host_request: ?HostRequest = null, 2172 quit_requested: bool = false, 2173 2174 pub const HostRequest = union(enum) { 2175 show_copyable_text: []const u8, 2176 sync_events, 2177 undo: RoutablePage.RepoUndoRoute, 2178 }; 2179 2180 pub const FormFeedback = union(enum) { 2181 pub const LoginFailure = enum { unknown_user, wrong_password }; 2182 pub const ThreadFailure = enum { required_title }; 2183 pub const PatchFailure = enum { 2184 required_title, 2185 invalid_target_branch, 2186 invalid_source_branch, 2187 same_branch, 2188 unrelated_branches, 2189 2190 pub fn fromError(err: anyerror) ?PatchFailure { 2191 return switch (err) { 2192 error.InvalidTargetBranch => .invalid_target_branch, 2193 error.InvalidSourceBranch => .invalid_source_branch, 2194 error.SameBranch => .same_branch, 2195 error.UnrelatedBranches => .unrelated_branches, 2196 else => null, 2197 }; 2198 } 2199 }; 2200 2201 pub const RepoFailure = enum { 2202 required_name, 2203 invalid_name, 2204 name_taken, 2205 2206 pub fn fromError(err: anyerror) ?RepoFailure { 2207 return switch (err) { 2208 error.NameEmpty => .required_name, 2209 error.NameTooLong, error.InvalidName => .invalid_name, 2210 error.NameTaken => .name_taken, 2211 else => null, 2212 }; 2213 } 2214 }; 2215 2216 pub const UserFailure = enum { 2217 required_name, 2218 invalid_name, 2219 name_taken, 2220 required_email, 2221 email_taken, 2222 required_password, 2223 password_mismatch, 2224 2225 pub fn fromError(err: anyerror) ?UserFailure { 2226 return switch (err) { 2227 error.NameEmpty => .required_name, 2228 error.NameTooShort, error.NameTooLong, error.InvalidName => .invalid_name, 2229 error.NameTaken => .name_taken, 2230 error.EmailEmpty => .required_email, 2231 error.EmailTaken => .email_taken, 2232 error.PasswordEmpty => .required_password, 2233 error.PasswordMismatch => .password_mismatch, 2234 else => null, 2235 }; 2236 } 2237 }; 2238 2239 login: struct { 2240 failure: LoginFailure, 2241 username: []const u8, 2242 }, 2243 user: struct { 2244 failure: UserFailure, 2245 // passwords are never retained 2246 fields: struct { 2247 name: []const u8, 2248 email: []const u8, 2249 }, 2250 }, 2251 repo: struct { 2252 failure: RepoFailure, 2253 fields: struct { 2254 name: []const u8, 2255 description: []const u8, 2256 hash: hash.HashKind, 2257 access: evt.Repo.Access, 2258 }, 2259 }, 2260 issue: struct { 2261 failure: ThreadFailure, 2262 fields: ?struct { 2263 title: []const u8, 2264 labels: []const u8, 2265 description: []const u8, 2266 } = null, 2267 }, 2268 patch: struct { 2269 failure: PatchFailure, 2270 fields: ?struct { 2271 title: []const u8, 2272 labels: []const u8, 2273 description: []const u8, 2274 target_branch: []const u8, 2275 source_branch: []const u8 = "", 2276 source_kind: Repo.Patches.Source.Kind = .fork, 2277 } = null, 2278 }, 2279 discussion: struct { 2280 failure: ThreadFailure, 2281 fields: ?struct { 2282 title: []const u8, 2283 labels: []const u8, 2284 description: []const u8, 2285 } = null, 2286 }, 2287 }; 2288 2289 const Self = @This(); 2290 2291 // serializable data sent down to web client 2292 pub const Data = struct { 2293 user_id: ?[]const u8 = null, 2294 // the logged-in user's name, for the views that show it 2295 user_name: ?[]const u8 = null, 2296 // a failed form retained long enough to render it for correction 2297 form_feedback: ?FormFeedback = null, 2298 // a transient local event-sync error 2299 sync_failure: ?[]const u8 = null, 2300 // a failed terminal undo retained on the current tab 2301 undo_failure: ?[]const u8 = null, 2302 current_page: RoutablePage = .default, 2303 // the selected ANSI art. the server serializes one image for WASM so 2304 // the browser does not need the whole build-generated collection. 2305 ansi_art: []const u8 = "", 2306 // the bound git-service ports. absent in local mode, where remote urls 2307 // are not shown. 2308 git_http_port: ?u16 = null, 2309 git_ssh_port: ?u16 = null, 2310 git_ssh_prefix: []const u8 = "", 2311 // whether this session views a local repo or the server. unlike `local` 2312 // (the host-side filesystem source) this travels in the snapshot, so 2313 // the wasm side also parses elided link urls and hides the multi-user 2314 // chrome. 2315 host_kind: evt.HostKind = .server, 2316 }; 2317 2318 pub fn init( 2319 arena: *std.heap.ArenaAllocator, 2320 repo: *rp.Repo(.xit, evt.admin_repo_opts), 2321 data: Data, 2322 ) !Self { 2323 var session = Self{ 2324 .data = data, 2325 .arena = arena, 2326 // until a host swaps in a page-scoped arena (Nav does this), page 2327 // allocations land in the session arena. on the web path that's the 2328 // intended behavior, since the whole arena is per-request. 2329 .page_arena = arena, 2330 .admin_repo = repo, 2331 .haxy_moment = try evt.currentMoment(evt.admin_repo_opts, repo), 2332 }; 2333 try session.loadUser(); 2334 return session; 2335 } 2336 2337 // load the logged-in user's name and persisted preferences from the db 2338 pub fn loadUser(self: *Self) !void { 2339 const user_id = self.userId() orelse return; 2340 const moment = self.haxy_moment orelse return; 2341 const user = (try activeUser(moment, self.arena, user_id)) orelse return self.logOut(); 2342 self.data.user_name = user.event.name; 2343 } 2344 2345 // forget the logged-in user, on a logout or once their account is removed 2346 pub fn logOut(self: *Self) void { 2347 self.data.user_id = null; 2348 self.data.user_name = null; 2349 } 2350 2351 pub fn userId(self: *const Self) ?[evt.event_id_size]u8 { 2352 const bytes = self.data.user_id orelse return null; 2353 if (bytes.len != evt.event_id_size) return null; 2354 var id: [evt.event_id_size]u8 = undefined; 2355 @memcpy(&id, bytes); 2356 return id; 2357 } 2358 2359 pub fn formFeedback(self: *const Self, comptime tag: std.meta.Tag(FormFeedback)) ?@FieldType(FormFeedback, @tagName(tag)) { 2360 const feedback = self.data.form_feedback orelse return null; 2361 if (std.meta.activeTag(feedback) != tag) return null; 2362 return @field(feedback, @tagName(tag)); 2363 } 2364 2365 pub fn clearFormFeedback(self: *Self) void { 2366 self.data.form_feedback = null; 2367 } 2368 2369 // the actor for a write to the repo `identity` names, or null when the 2370 // session may not write there with at least `min_role`. local mode always 2371 // writes. 2372 pub fn authorize(self: *Self, identity: []const u8, min_role: evt.Repo.Role) !?Actor { 2373 if (self.data.host_kind == .local) { 2374 const author = blk: { 2375 const src = self.local orelse break :blk local_author_fallback; 2376 const io = self.io orelse break :blk local_author_fallback; 2377 break :blk try localAuthor(src, io, self.page_arena.child_allocator, self.page_arena); 2378 }; 2379 return .{ .author = author, .role = .owner }; 2380 } 2381 const user_id = self.userId() orelse return null; 2382 // the session's moment predates this input, so read the roles afresh 2383 const admin_repo = self.admin_repo orelse return null; 2384 const io = self.io orelse return null; 2385 const users_dir = self.users_dir orelse return null; 2386 const moment = try evt.currentMoment(evt.admin_repo_opts, admin_repo); 2387 return switch (try authorizeUser(io, moment, self.page_arena, users_dir, user_id, identity, min_role)) { 2388 .actor => |actor| actor, 2389 .login_required, .repo_not_found, .forbidden => null, 2390 }; 2391 } 2392 2393 // where this session's event writes go. a server session always has a users dir 2394 pub fn eventHost(self: *const Self) evt.Host { 2395 return switch (self.data.host_kind) { 2396 .local => .local, 2397 .server => .{ .server = .{ .users_dir = self.users_dir orelse unreachable } }, 2398 }; 2399 } 2400 2401 // reload the moment from the admin repo and log out a removed user 2402 pub fn reloadMoment(self: *Self, allocator: std.mem.Allocator, repo: *rp.Repo(.xit, evt.admin_repo_opts)) !void { 2403 const moment = try evt.currentMoment(evt.admin_repo_opts, repo); 2404 self.haxy_moment = moment; 2405 2406 const user_id = self.userId() orelse return; 2407 var arena = std.heap.ArenaAllocator.init(allocator); 2408 defer arena.deinit(); 2409 if (try activeUser(moment, &arena, user_id) == null) self.logOut(); 2410 } 2411 2412 // request a forward navigation to `route`; the host consumes next_page 2413 // (Nav.sync on the terminal, the wasm tick on the web). 2414 pub fn navigate(self: *Session, route: RoutablePage) !void { 2415 self.clearFormFeedback(); 2416 self.next_page = route; 2417 } 2418 }; 2419 2420 pub fn run(io: std.Io, allocator: std.mem.Allocator, session: *Session, repo_maybe: ?*rp.Repo(.xit, evt.admin_repo_opts)) !void { 2421 var nav = try Nav.init(allocator, session); 2422 defer nav.deinit(allocator); 2423 2424 var terminal = try term.Terminal.init(io, allocator); 2425 var terminal_live = true; 2426 defer if (terminal_live) terminal.deinit(io); 2427 2428 // set term as active so it will be properly cooked 2429 // when a panic/segfault happens 2430 term.setActive(&terminal); 2431 defer term.setActive(null); 2432 2433 try terminal.queryBackground(); 2434 2435 while (!terminal.shouldQuit()) { 2436 const grid_changed = try terminal.render(&nav.root); 2437 2438 // process any inputs. 2439 // 2440 // if the grid didn't change, then first do a blocking 2441 // read, so the thread will sleep until further input. 2442 // after that, all remaining reads are non-blocking so 2443 // we can process the rest of the queued inputs. 2444 // 2445 // if the grid *did* change, then only do non-blocking 2446 // reads. we do not want to sleep the thread because 2447 // there may be an animation that requires more looping. 2448 var blocking = !grid_changed; 2449 while (try terminal.readKey(io, blocking)) |key| { 2450 blocking = false; 2451 try inputKey(allocator, &nav.root, key, session); 2452 } 2453 2454 if (session.host_request) |request| { 2455 session.host_request = null; 2456 switch (request) { 2457 .show_copyable_text => |copyable_text| { 2458 term.setActive(null); 2459 terminal.deinit(io); 2460 terminal_live = false; 2461 showCopyableText(io, copyable_text) catch |show_err| { 2462 terminal = try term.Terminal.init(io, allocator); 2463 terminal_live = true; 2464 term.setActive(&terminal); 2465 return show_err; 2466 }; 2467 terminal = try term.Terminal.init(io, allocator); 2468 terminal_live = true; 2469 term.setActive(&terminal); 2470 }, 2471 .undo => |target| Repo.Undo.handleRequest(allocator, session, target), 2472 .sync_events => { 2473 try nav.root.build(allocator, .{ 2474 .min_size = .{ .width = null, .height = null }, 2475 .max_size = .{ .width = terminal.size.width, .height = terminal.size.height }, 2476 }, nav.root.getFocus()); 2477 _ = try terminal.render(&nav.root); 2478 try Repo.Events.performSync(allocator, session); 2479 }, 2480 } 2481 } 2482 2483 // reload so the next navigation builds its page from the current moment 2484 if (repo_maybe) |repo| try session.reloadMoment(allocator, repo); 2485 2486 // reconcile navigation: forward to a new page, or back on escape. 2487 // the terminal background can change at any time, so recheck it on each page 2488 if (try nav.sync(allocator, session)) try terminal.queryBackground(); 2489 2490 // the quit button (on the quit tab) asks the host to tear down. 2491 if (session.quit_requested) terminal.requestQuit(); 2492 2493 try nav.root.build(allocator, .{ 2494 .min_size = .{ .width = null, .height = null }, 2495 .max_size = .{ .width = terminal.size.width, .height = terminal.size.height }, 2496 }, nav.root.getFocus()); 2497 } 2498 } 2499 2500 fn showCopyableText(io: std.Io, copyable_text: []const u8) !void { 2501 const tty: ?std.Io.File = if (builtin.os.tag == .windows) 2502 null 2503 else 2504 try std.Io.Dir.cwd().openFile(io, "/dev/tty", .{ .mode = .read_write }); 2505 defer if (tty) |file| file.close(io); 2506 2507 const input = if (tty) |file| file else std.Io.File.stdin(); 2508 const output = if (tty) |file| file else std.Io.File.stdout(); 2509 2510 var write_buf: [1024]u8 = undefined; 2511 var writer = output.writer(io, &write_buf); 2512 try writer.interface.print("\x1b[2J\x1b[Hcopy the following text and then press enter to go back:\r\n\r\n{s}\r\n", .{copyable_text}); 2513 try writer.interface.flush(); 2514 2515 var read_buf: [1]u8 = undefined; 2516 var reader = input.reader(io, &read_buf); 2517 while (true) { 2518 const byte = try reader.interface.takeByte(); 2519 if (byte == '\r' or byte == '\n') return; 2520 } 2521 } 2522 2523 pub fn inputKey(allocator: std.mem.Allocator, root: *Widget, key: Key, session: *Session) !void { 2524 const root_focus = root.getFocus(); 2525 const focused_before = root_focus.grandchild_id; 2526 var activate_in_page_link = false; 2527 switch (key) { 2528 // request a navigation pop; the host's Nav.sync goes back a page, or 2529 // quits when there's no history left. 2530 .escape => { 2531 session.back = .requested; 2532 return; 2533 }, 2534 .ctrl => |letter| switch (letter) { 2535 'r' => { 2536 session.refresh_requested = true; 2537 return; 2538 }, 2539 else => try root.input(allocator, key, root_focus), 2540 }, 2541 .enter => { 2542 if (root_focus.grandchild_id) |gid| { 2543 // follow a cross-page link 2544 if (crossPageLink(root_focus, gid, session.data)) |route| { 2545 return session.navigate(route); 2546 } 2547 if (rawLink(root_focus, gid)) |url| return requestRawLink(session, url); 2548 } 2549 activate_in_page_link = true; 2550 try root.input(allocator, key, root_focus); 2551 }, 2552 .mouse => |mouse| { 2553 if (mouse.action == .press and mouse.action.press == .left) { 2554 if (root_focus.hitTest(mouse.x, mouse.y)) |hit| { 2555 const focus_id = hit.id; 2556 if (hit.kind == .background) { 2557 root_focus.setFocus(focus_id); 2558 return; 2559 } 2560 if (widget.isBackButton((root_focus.children.get(focus_id) orelse return).focus)) { 2561 if (session.back == .available) session.back = .requested; 2562 return; 2563 } 2564 // follow a cross-page link 2565 if (crossPageLink(root_focus, focus_id, session.data)) |route| { 2566 return session.navigate(route); 2567 } 2568 if (rawLink(root_focus, focus_id)) |url| { 2569 if (!mouse.ctrl) try requestRawLink(session, url); 2570 return; 2571 } 2572 root_focus.setFocus(focus_id); 2573 activate_in_page_link = true; 2574 } 2575 // forward the press into the widget tree so buttons (and any 2576 // future click-aware widgets) can react. widgets that don't 2577 // care about presses ignore it. 2578 try root.input(allocator, key, root_focus); 2579 } else { 2580 try root.input(allocator, key, root_focus); 2581 } 2582 }, 2583 .event => |event| switch (event) { 2584 .background => |rgb| session.terminal_background = rgb, 2585 .resize => try root.input(allocator, key, root_focus), 2586 }, 2587 else => try root.input(allocator, key, root_focus), 2588 } 2589 2590 const focused_after = root_focus.grandchild_id; 2591 if (!activate_in_page_link and focused_before == focused_after) return; 2592 const focus_id = focused_after orelse return; 2593 if (inPageLink(root_focus, focus_id, session.data)) |route| session.data.current_page = route; 2594 } 2595 2596 // a link to bytes the server serves directly rather than to a page route, so 2597 // it never resolves to a RoutablePage 2598 pub const raw_link_prefix = "ax:"; 2599 2600 // a route already loaded into the current page; focusing it changes the url 2601 // without rebuilding the page 2602 pub const in_page_link_prefix = "ai:"; 2603 2604 // an in-page tab's base route, or the exact current route when it is selected 2605 pub fn inPageTabLink(session: *Session, route: RoutablePage, selected: bool) ![]const u8 { 2606 const target = if (selected) session.data.current_page else route; 2607 return std.fmt.allocPrint(session.page_arena.allocator(), "{s}{s}", .{ in_page_link_prefix, try target.toUrl(session.page_arena) }); 2608 } 2609 2610 // a button the web renderer covers with a file picker that posts the chosen 2611 // file to the url after the prefix 2612 pub const file_input_prefix = "file:"; 2613 2614 // a submit button that overrides its enclosing form's action 2615 pub const submit_action_prefix = "submit:"; 2616 2617 // one option of a radio field, as `radio:<name>=<value>` 2618 pub const radio_prefix = "radio:"; 2619 2620 // the url an `ax:` link points at, or null for anything else. a host that 2621 // suppresses the anchor's own navigation needs this to follow the link. 2622 pub fn rawLink(root_focus: *Focus, focus_id: usize) ?[]const u8 { 2623 const child = root_focus.children.get(focus_id) orelse return null; 2624 const custom = switch (child.focus.kind) { 2625 .custom => |c| c, 2626 else => return null, 2627 }; 2628 if (!std.mem.startsWith(u8, custom, raw_link_prefix)) return null; 2629 return custom[raw_link_prefix.len..]; 2630 } 2631 2632 fn requestRawLink(session: *Session, url: []const u8) !void { 2633 session.host_request = .{ .show_copyable_text = try terminalWebUrl(session.page_arena.allocator(), session, url) }; 2634 } 2635 2636 pub fn terminalWebUrl(allocator: std.mem.Allocator, session: *const Session, path: []const u8) ![]const u8 { 2637 // an absolute url is already complete 2638 if (!std.mem.startsWith(u8, path, "/")) return path; 2639 return if (session.web_port) |port| 2640 try std.fmt.allocPrint(allocator, "http://localhost:{d}{s}", .{ port, path }) 2641 else 2642 path; 2643 } 2644 2645 // if the focus target at focus_id is an `a:` link that should navigate (a 2646 // different parent page, or a different files directory within the repo page), 2647 // return its route; otherwise null. lets a host turn a click / enter on such a 2648 // link into a navigation rather than a focus change. 2649 pub fn crossPageLink(root_focus: *Focus, focus_id: usize, data: Session.Data) ?RoutablePage { 2650 const current = data.current_page; 2651 const route = pageLink(root_focus, focus_id, data, "a:") orelse return null; 2652 // a link to a different parent page always navigates; within a page, a 2653 // files-directory / commits-page / list-window change navigates while tab 2654 // links stay in-page. 2655 if (route.parent() != current.parent() or RoutablePage.repoPageChanged(route, current) or RoutablePage.forkPageChanged(route, current) or RoutablePage.homePageChanged(route, current) or RoutablePage.userPageChanged(route, current)) return route; 2656 return null; 2657 } 2658 2659 // the route carried by an `ai:` focus target, or null for any other target 2660 pub fn inPageLink(root_focus: *Focus, focus_id: usize, data: Session.Data) ?RoutablePage { 2661 return pageLink(root_focus, focus_id, data, in_page_link_prefix); 2662 } 2663 2664 fn pageLink(root_focus: *Focus, focus_id: usize, data: Session.Data, prefix: []const u8) ?RoutablePage { 2665 const child = root_focus.children.get(focus_id) orelse return null; 2666 const custom = switch (child.focus.kind) { 2667 .custom => |c| c, 2668 else => return null, 2669 }; 2670 if (!std.mem.startsWith(u8, custom, prefix)) return null; 2671 const path = custom[prefix.len..]; 2672 // local sessions build (and parse) links with the repo identity elided 2673 return if (data.host_kind == .local) RoutablePage.fromUrlLocal(path) else RoutablePage.fromUrl(path); 2674 } 2675 2676 // a display author, resolved against the admin db at read time 2677 pub const Author = union(enum) { 2678 unknown, 2679 email: []const u8, // an email no user matches 2680 user_name: []const u8, 2681 2682 // the commit author line's email, resolved like initFromEmail 2683 pub fn init( 2684 haxy_moment: ?evt.AdminDB.HashMap(.read_only), 2685 arena: *std.heap.ArenaAllocator, 2686 author_line: []const u8, 2687 ) !Author { 2688 return initFromEmail(haxy_moment, arena, evt.authorEmail(author_line)); 2689 } 2690 2691 // from a record's stored author email: it resolves to the user currently 2692 // holding it, else stays the email. the result is allocated in `arena`, 2693 // so the email may borrow transient memory. 2694 pub fn initFromEmail( 2695 haxy_moment: ?evt.AdminDB.HashMap(.read_only), 2696 arena: *std.heap.ArenaAllocator, 2697 author_email: ?[]const u8, 2698 ) !Author { 2699 const email = author_email orelse return .unknown; 2700 if (haxy_moment) |moment| { 2701 if (try evt.User.readByEmail(evt.AdminDB, evt.admin_repo_opts.hash, moment, arena, email)) |user| { 2702 return .{ .user_name = user.name }; 2703 } 2704 } 2705 return .{ .email = try arena.allocator().dupe(u8, email) }; 2706 } 2707 }; 2708 2709 // the "a:" link to user `name`'s page. 2710 pub fn userLink(page_arena: *std.heap.ArenaAllocator, name: []const u8) ![]const u8 { 2711 const parsed = RoutablePage.Array(evt.User.name_max_len).from(name) orelse return error.RouteTooLong; 2712 const url = try (RoutablePage{ .user_repos = .{ .name = parsed } }).toUrl(page_arena); 2713 return std.fmt.allocPrint(page_arena.allocator(), "a:{s}", .{url}); 2714 } 2715 2716 // a focusable " author " box showing `author`, linking to their user page 2717 // when it is a known user 2718 pub fn authorBox(allocator: std.mem.Allocator, page_arena: *std.heap.ArenaAllocator, author: Author) !wgt.TextBox { 2719 const text = switch (author) { 2720 .unknown => "", 2721 .email, .user_name => |t| t, 2722 }; 2723 var tb = try wgt.TextBox.init(allocator, text, .{ .border_style = .single, .round_corners = true, .wrap_kind = .none, .label = " author " }); 2724 errdefer tb.deinit(allocator); 2725 tb.getFocus().mode = .all; 2726 switch (author) { 2727 .user_name => |name| tb.getFocus().kind = .{ .custom = try userLink(page_arena, name) }, 2728 else => {}, 2729 } 2730 return tb; 2731 } 2732 2733 // native-TUI navigation 2734 pub const Nav = struct { 2735 root: Widget, 2736 // backs the current page (its Page data and the page-scoped strings its 2737 // widgets build). owned here, swapped on each navigation. session.page_arena 2738 // tracks whichever of these is current so widgets allocate into it. 2739 arena: *std.heap.ArenaAllocator, 2740 // the login the current root was built for 2741 user_id: ?[evt.event_id_size]u8, 2742 history: std.ArrayList(Entry), 2743 2744 // each retained page keeps its own arena, freed when the page leaves the 2745 // stack (popped on back, evicted at cap, or on deinit). this is what keeps a 2746 // long-lived session from accumulating every page it ever visited. 2747 const Entry = struct { root: Widget, route: RoutablePage, arena: *std.heap.ArenaAllocator, user_id: ?[evt.event_id_size]u8 }; 2748 2749 // cap on retained back-history so the chain can't grow memory without bound 2750 const max_history: usize = 16; 2751 2752 pub fn init(allocator: std.mem.Allocator, session: *Session) !Nav { 2753 session.back = .unavailable; 2754 const arena = try allocator.create(std.heap.ArenaAllocator); 2755 arena.* = std.heap.ArenaAllocator.init(allocator); 2756 errdefer { 2757 arena.deinit(); 2758 allocator.destroy(arena); 2759 } 2760 2761 return .{ 2762 .root = try initCurrentRoot(allocator, arena, session), 2763 .arena = arena, 2764 .user_id = session.userId(), 2765 .history = .empty, 2766 }; 2767 } 2768 2769 pub fn deinit(self: *Nav, allocator: std.mem.Allocator) void { 2770 self.root.deinit(allocator); 2771 freeArena(allocator, self.arena); 2772 for (self.history.items) |*entry| { 2773 entry.root.deinit(allocator); 2774 freeArena(allocator, entry.arena); 2775 } 2776 self.history.deinit(allocator); 2777 } 2778 2779 // rebuild the current page in place from a current moment 2780 fn rebuild(self: *Nav, allocator: std.mem.Allocator, session: *Session) !void { 2781 if (session.haxy_moment == null and session.local == null) return; 2782 const arena = try allocator.create(std.heap.ArenaAllocator); 2783 arena.* = std.heap.ArenaAllocator.init(allocator); 2784 errdefer freeArena(allocator, arena); 2785 2786 const new_root = try initCurrentRoot(allocator, arena, session); 2787 2788 self.root.deinit(allocator); 2789 freeArena(allocator, self.arena); 2790 self.root = new_root; 2791 self.arena = arena; 2792 self.user_id = session.userId(); 2793 } 2794 2795 // build the current page's root in `arena`, or the not-found page's when 2796 // the route names nothing 2797 fn initCurrentRoot(allocator: std.mem.Allocator, arena: *std.heap.ArenaAllocator, session: *Session) !Widget { 2798 session.page_arena = arena; 2799 const page = try arena.allocator().create(Page); 2800 page.* = Page.init(arena, session, session.data.current_page) catch |err| switch (err) { 2801 error.NotFound => blk: { 2802 session.data.current_page = .not_found; 2803 break :blk .not_found; 2804 }, 2805 else => |e| return e, 2806 }; 2807 return initRoot(allocator, page, session); 2808 } 2809 2810 fn freeArena(allocator: std.mem.Allocator, arena: *std.heap.ArenaAllocator) void { 2811 arena.deinit(); 2812 allocator.destroy(arena); 2813 } 2814 2815 // reconcile the displayed root with the session's navigation state. a 2816 // forward nav (current_page moved to a different parent page) pushes the 2817 // current root and builds the new page in a fresh arena; a back request 2818 // frees the current page and restores the previous one. when escape is 2819 // pressed with no history left we switch to the quit tab instead of quitting. 2820 // returns whether the root was replaced. 2821 pub fn sync(self: *Nav, allocator: std.mem.Allocator, session: *Session) !bool { 2822 // refresh: rebuild the current page in place from a current moment 2823 if (session.refresh_requested) { 2824 session.refresh_requested = false; 2825 try self.rebuild(allocator, session); 2826 return true; 2827 } 2828 2829 if (session.back == .requested) { 2830 if (self.history.pop()) |entry| { 2831 session.back = if (self.history.items.len == 0) .unavailable else .available; 2832 self.root.deinit(allocator); 2833 freeArena(allocator, self.arena); 2834 self.root = entry.root; 2835 self.arena = entry.arena; 2836 self.user_id = entry.user_id; 2837 session.page_arena = entry.arena; 2838 session.data.current_page = entry.route; 2839 // a page built under another login is rebuilt rather than restored 2840 if (!std.meta.eql(entry.user_id, session.userId())) { 2841 try self.rebuild(allocator, session); 2842 return true; 2843 } 2844 chooseAnsiArtForNavigation(session); 2845 return true; 2846 } 2847 session.back = .unavailable; 2848 // nothing to go back to; switch to the quit confirmation 2849 const root_focus = self.root.getFocus(); 2850 var iter = root_focus.children.iterator(); 2851 while (iter.next()) |entry| { 2852 switch (entry.value_ptr.focus.kind) { 2853 .custom => |custom| if (std.mem.eql(u8, custom, Quit.tab_kind)) { 2854 root_focus.setFocus(entry.key_ptr.*); 2855 // a Stack only builds its selected child, so the quit 2856 // button isn't in the focus tree until a build runs with 2857 // the quit tab selected. build once, then send a 2858 // synthetic arrow_down to drop focus from the tab onto 2859 // the button so it's ready to confirm. 2860 try self.root.build(allocator, .{ 2861 .min_size = .{ .width = null, .height = 40 }, 2862 .max_size = .{ .width = 80, .height = null }, 2863 }, root_focus); 2864 try self.root.input(allocator, .arrow_down, root_focus); 2865 break; 2866 }, 2867 else => {}, 2868 } 2869 } 2870 return false; 2871 } 2872 2873 // forward navigation: navigate() set next_page to the page to move to (a 2874 // cross-page link or tab change crossing pages) 2875 if (session.next_page) |route| { 2876 session.next_page = null; 2877 if (session.haxy_moment == null and session.local == null) return false; 2878 const previous_route = session.data.current_page; 2879 // the page we navigated to becomes the current page 2880 session.data.current_page = route; 2881 session.back = .available; 2882 2883 const arena = try allocator.create(std.heap.ArenaAllocator); 2884 arena.* = std.heap.ArenaAllocator.init(allocator); 2885 errdefer freeArena(allocator, arena); 2886 2887 const new_root = try initCurrentRoot(allocator, arena, session); 2888 2889 try self.history.append(allocator, .{ .root = self.root, .route = previous_route, .arena = self.arena, .user_id = self.user_id }); 2890 // drop the oldest entry (freeing its widget tree and arena) once over cap 2891 if (self.history.items.len > max_history) { 2892 var oldest = self.history.orderedRemove(0); 2893 oldest.root.deinit(allocator); 2894 freeArena(allocator, oldest.arena); 2895 } 2896 self.root = new_root; 2897 self.arena = arena; 2898 self.user_id = session.userId(); 2899 return true; 2900 } 2901 return false; 2902 } 2903 }; 2904 2905 pub fn initRoot(allocator: std.mem.Allocator, page: *const Page, session: *Session) !Widget { 2906 const page_widget: Widget = switch (page.*) { 2907 .home => |*p| .{ .home = try .init(allocator, p, session) }, 2908 .user => |*p| .{ .user = try .init(allocator, p, session) }, 2909 .repo => |*p| .{ .repo = try .init(allocator, p, session) }, 2910 .fork => |*p| .{ .fork = try .init(allocator, p, session) }, 2911 .not_found => .{ .not_found = try .init(allocator, session) }, 2912 }; 2913 2914 chooseAnsiArtForNavigation(session); 2915 2916 // on the TUI/SSH, the page sits above a one-row footer showing its web 2917 // url, when there's a web UI to point at 2918 var root = if (session.is_terminal) blk: { 2919 var box = try wgt.Box(Widget).init(allocator, .{ .border_style = null, .direction = .vert }); 2920 errdefer box.deinit(allocator); 2921 const bg_id = bg_blk: { 2922 var background = try widget.AnsiBackground.init(allocator, page_widget, session); 2923 errdefer background.deinit(allocator); 2924 const id = background.getFocus().id; 2925 try box.children.put(allocator, id, .{ .widget = .{ .background = background }, .rect = null, .min_size = null }); 2926 break :bg_blk id; 2927 }; 2928 if (session.web_port != null) { 2929 var footer = try widget.Footer.init(allocator, session); 2930 errdefer footer.deinit(allocator); 2931 try box.children.put(allocator, footer.getFocus().id, .{ .widget = .{ .footer = footer }, .rect = null, .min_size = .{ .width = null, .height = 1 } }); 2932 } 2933 box.getFocus().child_id = bg_id; 2934 break :blk Widget{ .box = box }; 2935 } else Widget{ .background = try widget.AnsiBackground.init(allocator, page_widget, session) }; 2936 errdefer root.deinit(allocator); 2937 2938 // input-owning views build their TextInputs in init, so reset their 2939 // registrations here 2940 session.text_inputs.clearRetainingCapacity(); 2941 2942 try root.build(allocator, .{ 2943 .min_size = .{ .width = null, .height = 40 }, 2944 .max_size = .{ .width = 100, .height = null }, 2945 }, root.getFocus()); 2946 2947 return root; 2948 } 2949 2950 // native and server-side sessions choose from the embedded collection. WASM 2951 // keeps the art serialized by the server instead. 2952 fn chooseAnsiArtForNavigation(session: *Session) void { 2953 if (comptime ansi_art.art.len == 0) return; 2954 if (session.data.current_page == .not_found) { 2955 session.data.ansi_art = ansi_art.not_found; 2956 return; 2957 } 2958 const io = session.io orelse return; 2959 var random: usize = undefined; 2960 io.random(std.mem.asBytes(&random)); 2961 session.data.ansi_art = ansi_art.art[random % ansi_art.art.len]; 2962 } 2963