╭ ui.zig ───────────────────────────────────────────────────────╮ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ │ ╰───────────────────────────────────────────────────────────────╯
🬐 🬠 🬞🬂🬏 🬟 🬑 🬟 🬑 ╭bccaca04..╮ bccaca04.. see-em: 🬋🬋🬋 🬋🬋🬋 🬋 🬋 │files │ commits refs discuss issues new login 🬐 🬠 🬐 🬠 🬑 🬟 🬰 ╰──────────╯ (626) 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 widget = @import("./ui/widget.zig"); 35 pub const Widget = widget.Widget; 36 37 pub const clipped_bottom_label_max_len = 10 * 4; 38 39 pub fn clippedBottomLabel(buffer: []u8, text: []const u8) ![]const u8 { 40 var iter = (try std.unicode.Utf8View.init(text)).iterator(); 41 var end: usize = 0; 42 var clipped_end: usize = 0; 43 for (0..10) |i| { 44 const codepoint = iter.nextCodepointSlice() orelse break; 45 end += codepoint.len; 46 if (i == 7) clipped_end = end; 47 } 48 const clipped = iter.nextCodepointSlice() != null; 49 return try std.fmt.bufPrint(buffer, "{s}{s}", .{ text[0..if (clipped) clipped_end else end], if (clipped) ".." else "" }); 50 } 51 52 pub const detail_preview_lines = 50; 53 54 pub fn detailPreviewEnd(text: []const u8) ?usize { 55 var lines: usize = 1; 56 for (text, 0..) |byte, i| { 57 if (byte != '\n') continue; 58 if (lines == detail_preview_lines and i + 1 < text.len) return i; 59 lines += 1; 60 } 61 return null; 62 } 63 64 pub const PageKind = enum { 65 home, 66 user, 67 repo, 68 fork, 69 not_found, 70 }; 71 72 pub const Page = union(PageKind) { 73 home: Home, 74 user: User, 75 repo: Repo, 76 fork: Fork, 77 not_found, 78 79 pub fn init(arena: *std.heap.ArenaAllocator, session: *Session, route: RoutablePage) !Page { 80 // the repo page can build without a moment in local mode; the home and 81 // user pages always read from the admin db. 82 return switch (route.parent()) { 83 .home => .{ .home = try Home.init(arena, session, session.haxy_moment orelse return error.NoMoment, switch (route) { 84 .home_users => |u| u, 85 else => .{}, 86 }) }, 87 .user => blk: { 88 const haxy_moment = session.haxy_moment orelse return error.NoMoment; 89 break :blk switch (route) { 90 .user_repos => |u| .{ .user = try User.init(arena, session, haxy_moment, u.name, u.start, u.search.slice(), 0) }, 91 .user_forks => |u| .{ .user = try User.init(arena, session, haxy_moment, u.name, 0, "", u.start) }, 92 .user_new_repo, .user_new_user, .user_auth => |name| .{ .user = try User.init(arena, session, haxy_moment, name, 0, "", 0) }, 93 else => return error.UnexpectedRoute, 94 }; 95 }, 96 .repo => switch (route) { 97 .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_auth => .{ .repo = try Repo.init(arena, session, route) }, 98 else => return error.UnexpectedRoute, 99 }, 100 .fork => switch (route) { 101 .fork_patch, .fork_diff, .fork_files, .fork_commits, .fork_new_repo, .fork_new_user, .fork_auth => .{ .fork = try Fork.init(arena, session, route) }, 102 else => return error.UnexpectedRoute, 103 }, 104 .not_found => .not_found, 105 }; 106 } 107 }; 108 109 // what the server hands to the client (and what main_wasm parses on _start). 110 // keeps Page free of any per-request session state. 111 pub const Snapshot = struct { 112 page: Page, 113 session: Session.Data = .{}, 114 }; 115 116 // a top-level "page" the user can navigate to. the user_* variants are the 117 // tabs of a user page; they each carry the user's name and all map to the 118 // .user parent page, so switching between them stays on that page (and just 119 // updates the url) rather than navigating away. 120 pub const RoutablePage = union(enum) { 121 home_about, 122 home_users: HomeUsersRoute, 123 home_new_repo, 124 home_new_user, 125 home_auth, 126 user_repos: struct { 127 name: Array(evt.User.name_max_len), 128 start: usize = 0, 129 // the url-encoded name prefix the list is narrowed to ("" = none) 130 search: Array(search_route_max_len) = .{}, 131 }, 132 user_forks: struct { name: Array(evt.User.name_max_len), start: usize = 0 }, 133 user_new_repo: Array(evt.User.name_max_len), 134 user_new_user: Array(evt.User.name_max_len), 135 user_auth: Array(evt.User.name_max_len), 136 repo_files: RepoFilesRoute, 137 repo_commits: RepoCommitsRoute, 138 repo_diff: RepoDiffRoute, 139 repo_refs: struct { 140 name: Array(repo_route_max_len), 141 kind: RefKind = .branch, 142 // the url-encoded ref name `kind`'s column windows from ("" = the 143 // first window; the other column always shows its first window). 144 from: Array(ref_route_max_len) = .{}, 145 // the url-encoded prefix both columns are narrowed to ("" = none) 146 search: Array(search_route_max_len) = .{}, 147 }, 148 repo_issues: struct { 149 name: Array(repo_route_max_len), 150 // the label the list is filtered to, url-encoded ("" = unfiltered). 151 label: Array(issue_label_route_max_len) = .{}, 152 // the query the list is filtered to, url-encoded ("" = unfiltered). 153 search: Array(search_route_max_len) = .{}, 154 // the issue the route names: the list's window root, or the issue the 155 // edit/description/resolve view shows. 156 selected: Array(evt.event_id_size * 2) = .{}, 157 // the resolve view's comma-separated list of fields prefilled from 158 // their side of the conflict. 159 theirs: Array(theirs_route_max_len) = .{}, 160 // the view the url names; a route with `selected` derives its view 161 // from that issue's status instead. 162 view: IssuesView = .open, 163 // the selected issue's comment window (0 = the first window). 164 comments_start: usize = 0, 165 // the comment shown in the detail pane (empty = the issue thread). 166 comment: Array(evt.event_id_size * 2) = .{}, 167 }, 168 repo_patches: struct { 169 name: Array(repo_route_max_len), 170 label: Array(patch_label_route_max_len) = .{}, 171 search: Array(search_route_max_len) = .{}, 172 selected: Array(evt.event_id_size * 2) = .{}, 173 theirs: Array(theirs_route_max_len) = .{}, 174 view: PatchesView = .open, 175 comments_start: usize = 0, 176 comment: Array(evt.event_id_size * 2) = .{}, 177 }, 178 repo_discussions: struct { 179 name: Array(repo_route_max_len), 180 label: Array(discussion_label_route_max_len) = .{}, 181 search: Array(search_route_max_len) = .{}, 182 selected: Array(evt.event_id_size * 2) = .{}, 183 view: DiscussionsView = .recent, 184 comments_start: usize = 0, 185 comment: Array(evt.event_id_size * 2) = .{}, 186 }, 187 repo_events: RepoEventsRoute, 188 repo_undo: RepoUndoRoute, 189 repo_new_repo: Array(repo_route_max_len), 190 repo_new_user: Array(repo_route_max_len), 191 repo_auth: Array(repo_route_max_len), 192 fork_patch: ForkRoute, 193 fork_diff: ForkDiffRoute, 194 fork_files: ForkFilesRoute, 195 fork_commits: ForkCommitsRoute, 196 fork_new_repo: ForkRoute, 197 fork_new_user: ForkRoute, 198 fork_auth: ForkRoute, 199 not_found, 200 201 pub const default: RoutablePage = .home_about; 202 203 pub const RefKind = enum { branch, tag }; 204 205 pub const IssuesView = enum { open, closed, labels, new, edit, description, new_comment, edit_comment, remove, conflicts, resolve }; 206 207 pub const PatchesView = enum { open, closed, merged, labels, new, drafts, edit, publish, merge, description, new_comment, edit_comment, remove, conflicts, resolve }; 208 209 pub const DiscussionsView = enum { recent, labels, new, edit, description, new_comment, edit_comment, remove }; 210 211 pub const EventsView = enum { active, removed }; 212 213 pub const RefOrOid = enum { 214 branch, 215 tag, 216 object, 217 }; 218 219 // the "key:value" segments of a url tail, collected in any order 220 const Params = struct { 221 const ParamKey = enum { start, line, branch, tag, label, object, base, patchrev, theirs, find, search, from, moment, merge }; 222 223 // a branch:/tag:/object: param; the value stays url-encoded 224 const RefParam = struct { kind: RefOrOid, value: []const u8 }; 225 226 values: std.enums.EnumArray(ParamKey, ?[]const u8) = .initFill(null), 227 228 // consume the leading "key:value" segments, stopping at the first 229 // segment that isn't one 230 fn scanPairs(self: *Params, segments: *std.mem.SplitIterator(u8, .scalar)) error{BadUrl}!void { 231 while (segments.peek()) |seg| { 232 const colon = std.mem.indexOfScalar(u8, seg, ':') orelse return; 233 const key = std.meta.stringToEnum(ParamKey, seg[0..colon]) orelse return; 234 const value = seg[colon + 1 ..]; 235 if (value.len == 0) return error.BadUrl; 236 if (self.values.get(key) != null) return error.BadUrl; 237 self.values.set(key, value); 238 _ = segments.next(); 239 } 240 } 241 242 // consume every remaining segment: pairs plus at most one bare word, 243 // which is returned 244 fn scanTail(self: *Params, segments: *std.mem.SplitIterator(u8, .scalar)) error{BadUrl}!?[]const u8 { 245 var word: ?[]const u8 = null; 246 while (true) { 247 try self.scanPairs(segments); 248 const seg = segments.next() orelse return word; 249 if (seg.len == 0 or word != null) return error.BadUrl; 250 word = seg; 251 } 252 } 253 254 // true when every set param is one of `allowed` 255 fn only(self: Params, allowed: []const ParamKey) bool { 256 for (std.enums.values(ParamKey)) |key| { 257 if (self.values.get(key) == null) continue; 258 if (std.mem.indexOfScalar(ParamKey, allowed, key) == null) return false; 259 } 260 return true; 261 } 262 263 // the "start:<n>" window param (0 when absent), null when malformed 264 fn start(self: Params) ?usize { 265 const value = self.values.get(.start) orelse return 0; 266 return std.fmt.parseInt(usize, value, 10) catch null; 267 } 268 269 // the "moment:<n>" event filter, null when absent 270 fn moment(self: Params) error{BadUrl}!?u64 { 271 const value = self.values.get(.moment) orelse return null; 272 return std.fmt.parseInt(u64, value, 10) catch error.BadUrl; 273 } 274 275 // the "line:<n>" first-line param (0 when absent), null when malformed 276 fn line(self: Params) ?usize { 277 const value = self.values.get(.line) orelse return 0; 278 return std.fmt.parseInt(usize, value, 10) catch null; 279 } 280 281 // the single branch:/tag:/object: param, null when none is set 282 fn ref(self: Params) error{BadUrl}!?RefParam { 283 var result: ?RefParam = null; 284 inline for (@typeInfo(RefOrOid).@"enum".fields) |field| { 285 if (self.values.get(@field(ParamKey, field.name))) |value| { 286 if (result != null) return error.BadUrl; 287 result = .{ .kind = @field(RefOrOid, field.name), .value = value }; 288 } 289 } 290 return result; 291 } 292 }; 293 294 pub const HomeUsersRoute = struct { 295 start: usize = 0, 296 // the url-encoded name prefix the list is narrowed to ("" = none) 297 search: Array(search_route_max_len) = .{}, 298 }; 299 300 const user_segment = "/user/"; 301 const repo_segment = "/repo/"; 302 const fork_segment = "/fork/"; 303 const files_seg = "files"; 304 const commits_seg = "commits"; 305 // ends a commits route naming its commit's full message 306 const message_seg = "message"; 307 // the `Params` key spellings the url emitters use 308 const label_filter_seg = @tagName(Params.ParamKey.label) ++ ":"; 309 const start_seg = @tagName(Params.ParamKey.start) ++ ":"; 310 const line_seg = @tagName(Params.ParamKey.line) ++ ":"; 311 const find_seg = @tagName(Params.ParamKey.find) ++ ":"; 312 const search_seg = @tagName(Params.ParamKey.search) ++ ":"; 313 const from_seg = @tagName(Params.ParamKey.from) ++ ":"; 314 const base_seg = @tagName(Params.ParamKey.base) ++ ":"; 315 const merge_seg = @tagName(Params.ParamKey.merge) ++ ":"; 316 const theirs_seg = @tagName(Params.ParamKey.theirs) ++ ":"; 317 const issue_seg = "issue:"; 318 const patch_seg = "patch:"; 319 const discuss_seg = "discuss:"; 320 const comment_seg = "comment:"; 321 // marks a files or diff route's trailing path: the value is the raw 322 // remainder of the url, so it must come last 323 const path_seg = "path:"; 324 325 // a repo route is "username/reponame", optionally followed by the files 326 // tab's "/files/<refkind>:<refvalue>[/line:<n>][/path:<dir>]"; the bare 327 // pair means the default branch's files root. a local session's routes 328 // elide the identity: "" at the bare root, else starting at the tail's "/". 329 pub const repo_route_max_len = 1024; 330 pub const repo_identity_max_len = evt.User.name_max_len + 1 + evt.Repo.name_max_len; 331 332 // true when a repo route's stored string elides its identity (local mode). 333 // unambiguous because a full string always starts with its owner segment. 334 fn identityElided(s: []const u8) bool { 335 return s.len == 0 or s[0] == '/'; 336 } 337 338 // a url-encoded label can grow to three bytes per source byte. 339 pub const issue_label_route_max_len = evt.Issue.label_max_len * 3; 340 pub const patch_label_route_max_len = evt.Patch.label_max_len * 3; 341 pub const discussion_label_route_max_len = evt.Discussion.label_max_len * 3; 342 343 // caps the resolve view's theirs: field list (a longer one doesn't route). 344 pub const theirs_route_max_len = 512; 345 346 // caps a url-encoded ref name in a route (a longer name doesn't route). 347 pub const ref_route_max_len = 512; 348 349 // caps the files tab's url-encoded search term. 350 pub const find_route_max_len = 100 * 3; 351 352 // caps the commits tab's url-encoded search query. 353 pub const search_route_max_len = 100 * 3; 354 355 // the identity stored by every repo route. Local routes elide it. 356 pub const RepoIdentity = struct { 357 identity: []const u8, // "owner/name" 358 owner: []const u8, 359 name: []const u8, 360 361 pub fn parse(s: []const u8) ?RepoIdentity { 362 var result: RepoIdentity = .{ 363 .identity = "", 364 .owner = "", 365 .name = "", 366 }; 367 if (identityElided(s)) { 368 return result; 369 } else { 370 var id_segments = std.mem.splitScalar(u8, s, '/'); 371 const owner = id_segments.next() orelse return null; 372 const name = id_segments.next() orelse return null; 373 if (owner.len == 0 or name.len == 0) return null; 374 result.identity = s[0 .. owner.len + 1 + name.len]; 375 result.owner = owner; 376 result.name = name; 377 } 378 return result; 379 } 380 }; 381 382 pub const RepoFilesRoute = struct { 383 name: Array(repo_identity_max_len), 384 ref_kind: ?RefOrOid = null, 385 ref_value: Array(ref_route_max_len) = .{}, 386 patchrev_id: Array(evt.event_id_size * 2) = .{}, 387 // the url-encoded search term ("" = the plain directory listing). with 388 // one set, `path` names the selected result rather than a directory. 389 find: Array(find_route_max_len) = .{}, 390 path: Array(repo_route_max_len) = .{}, 391 // the selected file's first visible line (1-based; 0 = unset). 392 line: usize = 0, 393 }; 394 395 pub const RepoDiffRoute = struct { 396 name: Array(repo_identity_max_len), 397 ref_or_oid: ?RefOrOid = null, 398 value: Array(ref_route_max_len) = .{}, 399 base_oid: Array(ref_route_max_len) = .{}, 400 patchrev_id: Array(evt.event_id_size * 2) = .{}, 401 start: usize = 0, 402 path: Array(repo_route_max_len) = .{}, 403 }; 404 405 pub const RepoCommitsRoute = struct { 406 name: Array(repo_identity_max_len), 407 ref_or_oid: ?RefOrOid = null, 408 value: Array(ref_route_max_len) = .{}, 409 base_oid: Array(ref_route_max_len) = .{}, 410 // the url-encoded query this page holds the results of ("" = the plain 411 // log). only a branch or tag can carry one. 412 search: Array(search_route_max_len) = .{}, 413 // the commit the list starts at ("" = the ref's own commit). 414 from: Array(ref_route_max_len) = .{}, 415 // a merge commit whose brought-in commits the page lists, resolved to an 416 // object and base on load. set alone. 417 merge: Array(ref_route_max_len) = .{}, 418 // the pane shows the whole message of the commit the log walks from. 419 message: bool = false, 420 }; 421 422 pub const RepoUndoRoute = struct { 423 name: Array(repo_identity_max_len), 424 index: ?u64 = null, 425 // the clear-history confirmation page, which has no selected entry 426 clear: bool = false, 427 }; 428 429 pub fn repoUndoRoute(identity: []const u8, index: ?u64) ?RoutablePage { 430 return .{ .repo_undo = .{ .name = Array(repo_identity_max_len).from(identity) orelse return null, .index = index } }; 431 } 432 433 pub fn repoUndoClearRoute(identity: []const u8) ?RoutablePage { 434 return .{ .repo_undo = .{ .name = Array(repo_identity_max_len).from(identity) orelse return null, .clear = true } }; 435 } 436 437 pub const RepoEventsRoute = struct { 438 name: Array(repo_identity_max_len), 439 view: EventsView = .active, 440 kind: ?evt.EventKind = null, 441 selected: Array(evt.event_id_size * 2) = .{}, 442 // a transaction's index in the repo history, limiting the list to the 443 // events it wrote. the page reads that transaction's own state 444 moment: ?u64 = null, 445 }; 446 447 pub const ForkRoute = struct { 448 name: Array(repo_identity_max_len), 449 id: Array(evt.event_id_size * 2), 450 }; 451 452 pub const ForkFilesRoute = struct { 453 fork: ForkRoute, 454 oid: Array(ref_route_max_len) = .{}, 455 find: Array(find_route_max_len) = .{}, 456 path: Array(repo_route_max_len) = .{}, 457 line: usize = 0, 458 }; 459 460 pub const ForkCommitsRoute = struct { 461 fork: ForkRoute, 462 oid: Array(ref_route_max_len) = .{}, 463 message: bool = false, 464 }; 465 466 pub const ForkDiffRoute = struct { 467 fork: ForkRoute, 468 // one commit's diff against `base_oid`, or the whole patch when unset 469 oid: Array(ref_route_max_len) = .{}, 470 base_oid: Array(ref_route_max_len) = .{}, 471 start: usize = 0, 472 path: Array(repo_route_max_len) = .{}, 473 }; 474 475 // where the shared files and commits views are mounted. fork routes always 476 // read their implicit `patch` branch unless they name an object directly. 477 pub const RepoLocation = union(enum) { 478 repo: []const u8, 479 fork: struct { 480 identity: []const u8, 481 id: []const u8, 482 }, 483 484 pub fn dupe(self: RepoLocation, allocator: std.mem.Allocator) !RepoLocation { 485 return switch (self) { 486 .repo => |identity_value| .{ .repo = try allocator.dupe(u8, identity_value) }, 487 .fork => |f| .{ .fork = .{ 488 .identity = try allocator.dupe(u8, f.identity), 489 .id = try allocator.dupe(u8, f.id), 490 } }, 491 }; 492 } 493 494 pub fn filesRoute(self: RepoLocation, ref_or_oid: RefOrOid, value: []const u8, path: []const u8, line: usize) ?RoutablePage { 495 return switch (self) { 496 .repo => |repo_identity| repoFilesRoute(repo_identity, ref_or_oid, value, path, line), 497 .fork => |f| if (ref_or_oid == .branch and std.mem.eql(u8, value, "patch")) 498 forkFilesRoute(f.identity, f.id, "", path, line) 499 else if (ref_or_oid == .object) 500 forkFilesRoute(f.identity, f.id, value, path, line) 501 else 502 null, 503 }; 504 } 505 506 pub fn commitsRoute(self: RepoLocation, ref_or_oid: ?RefOrOid, value: []const u8, base_oid: []const u8) ?RoutablePage { 507 return switch (self) { 508 .repo => |repo_identity| repoCommitsRoute(repo_identity, ref_or_oid, value, base_oid), 509 .fork => |f| if (ref_or_oid == null or (ref_or_oid == .branch and std.mem.eql(u8, value, "patch"))) 510 forkCommitsRoute(f.identity, f.id, "") 511 else if (ref_or_oid == .object) 512 forkCommitsRoute(f.identity, f.id, value) 513 else 514 null, 515 }; 516 } 517 518 // commit `oid`'s diff against `base_oid` (all zeros for a root commit) 519 pub fn commitDiffRoute(self: RepoLocation, oid: []const u8, base_oid: []const u8) ?RoutablePage { 520 return switch (self) { 521 .repo => |repo_identity| repoDiffRoute(repo_identity, .object, oid, 0, "", base_oid), 522 .fork => |f| forkDiffRoute(f.identity, f.id, oid, base_oid, 0, ""), 523 }; 524 } 525 526 // fork commits routes carry no base, so only a repo can list a merge's commits 527 pub fn commitsMergeRoute(self: RepoLocation, oid: []const u8) ?RoutablePage { 528 return switch (self) { 529 .repo => |repo_identity| repoCommitsMergeRoute(repo_identity, oid), 530 .fork => null, 531 }; 532 } 533 534 pub fn commitMessageRoute(self: RepoLocation, ref_or_oid: RefOrOid, value: []const u8, base_oid: []const u8) ?RoutablePage { 535 return switch (self) { 536 .repo => |repo_identity| repoCommitMessageRoute(repo_identity, ref_or_oid, value, base_oid), 537 .fork => |f| if (ref_or_oid == .object) forkCommitMessageRoute(f.identity, f.id, value) else null, 538 }; 539 } 540 }; 541 542 fn initForkRoute(identity: []const u8, id: []const u8) ?ForkRoute { 543 if (id.len != evt.event_id_size * 2) return null; 544 return .{ 545 .name = Array(repo_identity_max_len).from(identity) orelse return null, 546 .id = Array(evt.event_id_size * 2).from(id) orelse return null, 547 }; 548 } 549 550 pub fn forkPatchRoute(identity: []const u8, id: []const u8) ?RoutablePage { 551 return .{ .fork_patch = initForkRoute(identity, id) orelse return null }; 552 } 553 554 // the whole patch's diff when `oid` is "", else that commit's against `base_oid` 555 pub fn forkDiffRoute(identity: []const u8, id: []const u8, oid: []const u8, base_oid: []const u8, start: usize, path: []const u8) ?RoutablePage { 556 if ((oid.len == 0) != (base_oid.len == 0)) return null; 557 return .{ .fork_diff = .{ 558 .fork = initForkRoute(identity, id) orelse return null, 559 .oid = Array(ref_route_max_len).from(oid) orelse return null, 560 .base_oid = Array(ref_route_max_len).from(base_oid) orelse return null, 561 .start = start, 562 .path = Array(repo_route_max_len).from(path) orelse return null, 563 } }; 564 } 565 566 pub fn forkFilesRoute(identity: []const u8, id: []const u8, oid: []const u8, path: []const u8, line: usize) ?RoutablePage { 567 return .{ .fork_files = .{ 568 .fork = initForkRoute(identity, id) orelse return null, 569 .oid = Array(ref_route_max_len).from(oid) orelse return null, 570 .path = Array(repo_route_max_len).from(path) orelse return null, 571 .line = line, 572 } }; 573 } 574 575 pub fn forkCommitsRoute(identity: []const u8, id: []const u8, oid: []const u8) ?RoutablePage { 576 return .{ .fork_commits = .{ 577 .fork = initForkRoute(identity, id) orelse return null, 578 .oid = Array(ref_route_max_len).from(oid) orelse return null, 579 } }; 580 } 581 582 pub fn forkCommitMessageRoute(identity: []const u8, id: []const u8, oid: []const u8) ?RoutablePage { 583 if (oid.len == 0) return null; 584 return .{ .fork_commits = .{ 585 .fork = initForkRoute(identity, id) orelse return null, 586 .oid = Array(ref_route_max_len).from(oid) orelse return null, 587 .message = true, 588 } }; 589 } 590 591 pub fn forkNewRepoRoute(identity: []const u8, id: []const u8) ?RoutablePage { 592 return .{ .fork_new_repo = initForkRoute(identity, id) orelse return null }; 593 } 594 595 pub fn forkNewUserRoute(identity: []const u8, id: []const u8) ?RoutablePage { 596 return .{ .fork_new_user = initForkRoute(identity, id) orelse return null }; 597 } 598 599 pub fn forkAuthRoute(identity: []const u8, id: []const u8) ?RoutablePage { 600 return .{ .fork_auth = initForkRoute(identity, id) orelse return null }; 601 } 602 603 // build a `.repo_files` route (a null ref_kind = the bare default-branch 604 // root). null if the result doesn't fit the inline name. 605 pub fn repoFilesRoute(identity: []const u8, ref_kind: ?RefOrOid, ref_value: []const u8, dir: []const u8, line: usize) ?RoutablePage { 606 if (ref_kind == null and (ref_value.len != 0 or dir.len != 0)) return null; 607 if (ref_kind != null and ref_value.len == 0 and dir.len != 0) return null; 608 return .{ .repo_files = .{ 609 .name = Array(repo_identity_max_len).from(identity) orelse return null, 610 .ref_kind = ref_kind, 611 .ref_value = Array(ref_route_max_len).from(ref_value) orelse return null, 612 .path = Array(repo_route_max_len).from(dir) orelse return null, 613 .line = line, 614 } }; 615 } 616 617 // carry a search term on a files route, url-encoding it into the route. 618 // null when it doesn't fit. 619 pub fn withFind(self: RoutablePage, file_name: []const u8) ?RoutablePage { 620 const find = encodeParam(find_route_max_len, file_name) orelse return null; 621 var route = self; 622 switch (route) { 623 .repo_files => |*f| f.find = find, 624 .fork_files => |*f| f.find = find, 625 else => return null, 626 } 627 return route; 628 } 629 630 // carry a search query on a searchable route, url-encoding it 631 // into the route. 632 pub fn withSearch(self: RoutablePage, query: []const u8) ?RoutablePage { 633 const search = encodeParam(search_route_max_len, query) orelse return null; 634 return withEncodedSearch(self, search.slice()); 635 } 636 637 // the label and search segments of a thread list url, either one optional 638 fn writeListFilters(writer: *std.Io.Writer, label: []const u8, search: []const u8) !void { 639 if (label.len != 0) try writer.print("/" ++ label_filter_seg ++ "{s}", .{label}); 640 if (search.len != 0) try writer.print("/" ++ search_seg ++ "{s}", .{search}); 641 } 642 643 // carry the already-encoded list filters a selected thread's url names 644 fn withEncodedFilters(self: ?RoutablePage, label: []const u8, search: []const u8) ?RoutablePage { 645 var route = withEncodedSearch(self, search) orelse return null; 646 switch (route) { 647 inline .repo_issues, .repo_patches, .repo_discussions => |*thread| thread.label = @TypeOf(thread.label).from(label) orelse return null, 648 else => return null, 649 } 650 return route; 651 } 652 653 // carry an already-encoded search param, as a url hands it over 654 fn withEncodedSearch(self: ?RoutablePage, value: []const u8) ?RoutablePage { 655 var route = self orelse return null; 656 const search = Array(search_route_max_len).from(value) orelse return null; 657 switch (route) { 658 .home_users => |*u| u.search = search, 659 .user_repos => |*u| u.search = search, 660 .repo_commits => |*c| c.search = search, 661 .repo_refs => |*r| r.search = search, 662 .repo_issues => |*i| i.search = search, 663 .repo_patches => |*p| p.search = search, 664 .repo_discussions => |*d| d.search = search, 665 else => return null, 666 } 667 return route; 668 } 669 670 // root a commits route's list at `oid` rather than the ref's own commit. 671 pub fn withFrom(self: RoutablePage, oid: []const u8) ?RoutablePage { 672 var route = self; 673 switch (route) { 674 .repo_commits => |*c| c.from = Array(ref_route_max_len).from(oid) orelse return null, 675 else => return null, 676 } 677 return route; 678 } 679 680 fn encodeParam(comptime max_len: usize, value: []const u8) ?Array(max_len) { 681 var encoded: Array(max_len) = .{}; 682 var writer: std.Io.Writer = .fixed(&encoded.bytes); 683 std.Uri.Component.percentEncode(&writer, value, isUnreserved) catch return null; 684 encoded.len = @intCast(writer.buffered().len); 685 return encoded; 686 } 687 688 pub fn repoPatchRevFilesRoute(identity: []const u8, id: []const u8, path: []const u8, line: usize) ?RoutablePage { 689 _ = evt.parseEventId(id) catch return null; 690 return .{ .repo_files = .{ 691 .name = Array(repo_identity_max_len).from(identity) orelse return null, 692 .patchrev_id = Array(evt.event_id_size * 2).from(id) orelse return null, 693 .path = Array(repo_route_max_len).from(path) orelse return null, 694 .line = line, 695 } }; 696 } 697 698 // build a `.repo_commits` route (a null ref_or_oid = the default branch). 699 // always carries the `commits` marker so the bare route doesn't collide 700 // with the files root. 701 pub fn repoCommitsRoute(identity: []const u8, ref_or_oid: ?RefOrOid, value: []const u8, base_oid: []const u8) ?RoutablePage { 702 if (ref_or_oid == null and value.len != 0) return null; 703 return .{ .repo_commits = .{ 704 .name = Array(repo_identity_max_len).from(identity) orelse return null, 705 .ref_or_oid = ref_or_oid, 706 .value = Array(ref_route_max_len).from(value) orelse return null, 707 .base_oid = Array(ref_route_max_len).from(base_oid) orelse return null, 708 } }; 709 } 710 711 pub fn repoCommitsMergeRoute(identity: []const u8, oid: []const u8) ?RoutablePage { 712 return .{ .repo_commits = .{ 713 .name = Array(repo_identity_max_len).from(identity) orelse return null, 714 .merge = Array(ref_route_max_len).from(oid) orelse return null, 715 } }; 716 } 717 718 pub fn repoDiffRoute(identity: []const u8, ref_or_oid: ?RefOrOid, value: []const u8, start: usize, path: []const u8, base_oid: []const u8) ?RoutablePage { 719 if (base_oid.len == 0 or (ref_or_oid == null and value.len != 0)) return null; 720 return .{ .repo_diff = .{ 721 .name = Array(repo_identity_max_len).from(identity) orelse return null, 722 .ref_or_oid = ref_or_oid, 723 .value = Array(ref_route_max_len).from(value) orelse return null, 724 .base_oid = Array(ref_route_max_len).from(base_oid) orelse return null, 725 .start = start, 726 .path = Array(repo_route_max_len).from(path) orelse return null, 727 } }; 728 } 729 730 pub fn repoPatchRevDiffRoute(identity: []const u8, id: []const u8, start: usize, path: []const u8) ?RoutablePage { 731 _ = evt.parseEventId(id) catch return null; 732 return .{ .repo_diff = .{ 733 .name = Array(repo_identity_max_len).from(identity) orelse return null, 734 .patchrev_id = Array(evt.event_id_size * 2).from(id) orelse return null, 735 .start = start, 736 .path = Array(repo_route_max_len).from(path) orelse return null, 737 } }; 738 } 739 740 // build a `.repo_commits` route showing the ref/oid's commit message in 741 // full, which is the only content that page renders. 742 pub fn repoCommitMessageRoute(identity: []const u8, ref_or_oid: RefOrOid, value: []const u8, base_oid: []const u8) ?RoutablePage { 743 if (value.len == 0) return null; 744 return .{ .repo_commits = .{ 745 .name = Array(repo_identity_max_len).from(identity) orelse return null, 746 .ref_or_oid = ref_or_oid, 747 .value = Array(ref_route_max_len).from(value) orelse return null, 748 .base_oid = Array(ref_route_max_len).from(base_oid) orelse return null, 749 .message = true, 750 } }; 751 } 752 753 // build a `.repo_refs` route windowing `kind`'s column from the 754 // url-encoded ref name `from` ("" = the first window). 755 pub fn repoRefsRoute(identity: []const u8, kind: RefKind, from: []const u8) ?RoutablePage { 756 return .{ .repo_refs = .{ 757 .name = Array(repo_route_max_len).from(identity) orelse return null, 758 .kind = kind, 759 .from = Array(ref_route_max_len).from(from) orelse return null, 760 } }; 761 } 762 763 // build the events list or a window rooted at one event. 764 pub fn repoEventsRoute(identity: []const u8, view: EventsView, kind: ?evt.EventKind, selected: []const u8, moment: ?u64) ?RoutablePage { 765 if ((kind == null) != (selected.len == 0)) return null; 766 return .{ .repo_events = .{ 767 .name = Array(repo_identity_max_len).from(identity) orelse return null, 768 .view = view, 769 .kind = kind, 770 .selected = Array(evt.event_id_size * 2).from(selected) orelse return null, 771 .moment = moment, 772 } }; 773 } 774 775 // build a `.repo_issues` route for "owner/name" (identity) showing 776 // `status`'s list, filtered to the url-encoded `label` ("" = unfiltered) and 777 // rooted at the issue with hex event id `selected` ("" = the first window). 778 pub fn repoIssuesRoute(identity: []const u8, status: evt.Issue.Status, label: []const u8, selected: []const u8) ?RoutablePage { 779 return .{ .repo_issues = .{ 780 .name = Array(repo_route_max_len).from(identity) orelse return null, 781 .label = Array(issue_label_route_max_len).from(label) orelse return null, 782 .selected = Array(evt.event_id_size * 2).from(selected) orelse return null, 783 .view = switch (status) { 784 .open => .open, 785 .closed => .closed, 786 }, 787 } }; 788 } 789 790 pub fn repoPatchesRoute(identity: []const u8, status: evt.Patch.StatusKind, label: []const u8, selected: []const u8) ?RoutablePage { 791 return .{ .repo_patches = .{ 792 .name = Array(repo_route_max_len).from(identity) orelse return null, 793 .label = Array(patch_label_route_max_len).from(label) orelse return null, 794 .selected = Array(evt.event_id_size * 2).from(selected) orelse return null, 795 .view = switch (status) { 796 .open => .open, 797 .closed => .closed, 798 .merged => .merged, 799 }, 800 } }; 801 } 802 803 pub fn repoPatchesDraftsRoute(identity: []const u8) ?RoutablePage { 804 return .{ .repo_patches = .{ 805 .name = Array(repo_route_max_len).from(identity) orelse return null, 806 .view = .drafts, 807 } }; 808 } 809 810 pub fn repoPatchPublishRoute(identity: []const u8, selected: []const u8) ?RoutablePage { 811 if (selected.len == 0) return null; 812 var route = repoPatchesRoute(identity, .open, "", selected) orelse return null; 813 switch (route) { 814 .repo_patches => |*patch| patch.view = .publish, 815 else => unreachable, 816 } 817 return route; 818 } 819 820 pub fn repoPatchMergeRoute(identity: []const u8, selected: []const u8) ?RoutablePage { 821 if (selected.len == 0) return null; 822 var route = repoPatchesRoute(identity, .open, "", selected) orelse return null; 823 switch (route) { 824 .repo_patches => |*patch| patch.view = .merge, 825 else => unreachable, 826 } 827 return route; 828 } 829 830 pub fn repoDiscussionsRoute(identity: []const u8, label: []const u8, selected: []const u8) ?RoutablePage { 831 return .{ .repo_discussions = .{ 832 .name = Array(repo_route_max_len).from(identity) orelse return null, 833 .label = Array(discussion_label_route_max_len).from(label) orelse return null, 834 .selected = Array(evt.event_id_size * 2).from(selected) orelse return null, 835 } }; 836 } 837 838 // build the default list route for a thread event kind. 839 pub fn repoThreadRoute(kind: evt.EventKind, identity: []const u8, label: []const u8, selected: []const u8) ?RoutablePage { 840 return switch (kind) { 841 .issue => repoIssuesRoute(identity, .open, label, selected), 842 .patch => repoPatchesRoute(identity, .open, label, selected), 843 .discuss => repoDiscussionsRoute(identity, label, selected), 844 else => null, 845 }; 846 } 847 848 // build a selected thread route at one of its comment windows. 849 pub fn repoThreadCommentsRoute(kind: evt.EventKind, identity: []const u8, selected: []const u8, start: usize) ?RoutablePage { 850 var route = repoThreadRoute(kind, identity, "", selected) orelse return null; 851 switch (route) { 852 .repo_issues => |*thread| thread.comments_start = start, 853 .repo_patches => |*thread| thread.comments_start = start, 854 .repo_discussions => |*thread| thread.comments_start = start, 855 else => unreachable, 856 } 857 return route; 858 } 859 860 // build a comment permalink route at one of its immediate-reply windows. 861 pub fn repoThreadCommentRoute(kind: evt.EventKind, identity: []const u8, thread_id: []const u8, comment_id: []const u8, start: usize) ?RoutablePage { 862 if (thread_id.len == 0 or comment_id.len == 0) return null; 863 var route = repoThreadCommentsRoute(kind, identity, thread_id, start) orelse return null; 864 const comment = Array(evt.event_id_size * 2).from(comment_id) orelse return null; 865 switch (route) { 866 .repo_issues => |*thread| thread.comment = comment, 867 .repo_patches => |*thread| thread.comment = comment, 868 .repo_discussions => |*thread| thread.comment = comment, 869 else => unreachable, 870 } 871 return route; 872 } 873 874 // build the form route for replying to a thread or one of its comments. 875 pub fn repoThreadCommentNewRoute(kind: evt.EventKind, identity: []const u8, thread_id: []const u8, parent_id: []const u8) ?RoutablePage { 876 if (thread_id.len == 0) return null; 877 var route = repoThreadCommentsRoute(kind, identity, thread_id, 0) orelse return null; 878 const parent_event_id = Array(evt.event_id_size * 2).from(parent_id) orelse return null; 879 switch (route) { 880 .repo_issues => |*thread| { 881 thread.comment = parent_event_id; 882 thread.view = .new_comment; 883 }, 884 .repo_patches => |*thread| { 885 thread.comment = parent_event_id; 886 thread.view = .new_comment; 887 }, 888 .repo_discussions => |*thread| { 889 thread.comment = parent_event_id; 890 thread.view = .new_comment; 891 }, 892 else => unreachable, 893 } 894 return route; 895 } 896 897 // build the form route for editing a comment. 898 pub fn repoThreadCommentEditRoute(kind: evt.EventKind, identity: []const u8, thread_id: []const u8, comment_id: []const u8) ?RoutablePage { 899 var route = repoThreadCommentRoute(kind, identity, thread_id, comment_id, 0) orelse return null; 900 switch (route) { 901 .repo_issues => |*thread| thread.view = .edit_comment, 902 .repo_patches => |*thread| thread.view = .edit_comment, 903 .repo_discussions => |*thread| thread.view = .edit_comment, 904 else => unreachable, 905 } 906 return route; 907 } 908 909 // build the confirmation route for removing a thread or comment. 910 pub fn repoThreadRemoveRoute(kind: evt.EventKind, identity: []const u8, thread_id: []const u8, comment_id: []const u8) ?RoutablePage { 911 var route = if (comment_id.len == 0) 912 repoThreadCommentsRoute(kind, identity, thread_id, 0) orelse return null 913 else 914 repoThreadCommentRoute(kind, identity, thread_id, comment_id, 0) orelse return null; 915 switch (route) { 916 .repo_issues => |*thread| thread.view = .remove, 917 .repo_patches => |*thread| thread.view = .remove, 918 .repo_discussions => |*thread| thread.view = .remove, 919 else => unreachable, 920 } 921 return route; 922 } 923 924 // build a thread labels route, keeping its url-encoded label filter. 925 pub fn repoThreadLabelsRoute(kind: evt.EventKind, identity: []const u8, label: []const u8) ?RoutablePage { 926 var route = repoThreadRoute(kind, identity, label, "") orelse return null; 927 switch (route) { 928 .repo_issues => |*thread| thread.view = .labels, 929 .repo_patches => |*thread| thread.view = .labels, 930 .repo_discussions => |*thread| thread.view = .labels, 931 else => unreachable, 932 } 933 return route; 934 } 935 936 // build a new-thread form route. 937 pub fn repoThreadNewRoute(kind: evt.EventKind, identity: []const u8) ?RoutablePage { 938 var route = repoThreadRoute(kind, identity, "", "") orelse return null; 939 switch (route) { 940 .repo_issues => |*thread| thread.view = .new, 941 .repo_patches => |*thread| thread.view = .new, 942 .repo_discussions => |*thread| thread.view = .new, 943 else => unreachable, 944 } 945 return route; 946 } 947 948 // build the edit form route for a thread. 949 pub fn repoThreadEditRoute(kind: evt.EventKind, identity: []const u8, selected: []const u8) ?RoutablePage { 950 if (selected.len == 0) return null; 951 var route = repoThreadRoute(kind, identity, "", selected) orelse return null; 952 switch (route) { 953 .repo_issues => |*thread| thread.view = .edit, 954 .repo_patches => |*thread| thread.view = .edit, 955 .repo_discussions => |*thread| thread.view = .edit, 956 else => unreachable, 957 } 958 return route; 959 } 960 961 // build a route showing a thread's whole description. 962 pub fn repoThreadDescriptionRoute(kind: evt.EventKind, identity: []const u8, selected: []const u8) ?RoutablePage { 963 if (selected.len == 0) return null; 964 var route = repoThreadRoute(kind, identity, "", selected) orelse return null; 965 switch (route) { 966 .repo_issues => |*thread| thread.view = .description, 967 .repo_patches => |*thread| thread.view = .description, 968 .repo_discussions => |*thread| thread.view = .description, 969 else => unreachable, 970 } 971 return route; 972 } 973 974 // build a `.repo_issues` route showing the conflicts list, rooted at the 975 // issue with hex event id `start` ("" = the first window). 976 pub fn repoIssuesConflictsRoute(identity: []const u8, start: []const u8) ?RoutablePage { 977 return .{ .repo_issues = .{ 978 .name = Array(repo_route_max_len).from(identity) orelse return null, 979 .selected = Array(evt.event_id_size * 2).from(start) orelse return null, 980 .view = .conflicts, 981 } }; 982 } 983 984 // build a `.repo_issues` route showing the conflict resolve form for the 985 // issue with hex event id `selected`; `theirs` is the comma-separated list 986 // of fields prefilled from their side. 987 pub fn repoIssuesResolveRoute(identity: []const u8, selected: []const u8, theirs: []const u8) ?RoutablePage { 988 if (selected.len == 0) return null; 989 return .{ .repo_issues = .{ 990 .name = Array(repo_route_max_len).from(identity) orelse return null, 991 .selected = Array(evt.event_id_size * 2).from(selected) orelse return null, 992 .theirs = Array(theirs_route_max_len).from(theirs) orelse return null, 993 .view = .resolve, 994 } }; 995 } 996 997 pub fn repoPatchesConflictsRoute(identity: []const u8, start: []const u8) ?RoutablePage { 998 return .{ .repo_patches = .{ 999 .name = Array(repo_route_max_len).from(identity) orelse return null, 1000 .selected = Array(evt.event_id_size * 2).from(start) orelse return null, 1001 .view = .conflicts, 1002 } }; 1003 } 1004 1005 pub fn repoPatchesResolveRoute(identity: []const u8, selected: []const u8, theirs: []const u8) ?RoutablePage { 1006 if (selected.len == 0) return null; 1007 return .{ .repo_patches = .{ 1008 .name = Array(repo_route_max_len).from(identity) orelse return null, 1009 .selected = Array(evt.event_id_size * 2).from(selected) orelse return null, 1010 .theirs = Array(theirs_route_max_len).from(theirs) orelse return null, 1011 .view = .resolve, 1012 } }; 1013 } 1014 1015 // an inline, owned array of data. keeping it in the route (rather than a 1016 // borrowed slice) makes RoutablePage a plain value: it can be copied, stored 1017 // in history, and serialized without any arena tracking. 1018 pub fn Array(comptime max_len: usize) type { 1019 return struct { 1020 bytes: [max_len]u8 = undefined, 1021 len: u16 = 0, 1022 1023 pub fn from(s: []const u8) ?Array(max_len) { 1024 if (s.len > max_len) return null; 1025 var name = Array(max_len){ .len = @intCast(s.len) }; 1026 @memcpy(name.bytes[0..s.len], s); 1027 return name; 1028 } 1029 1030 pub fn slice(self: *const Array(max_len)) []const u8 { 1031 return self.bytes[0..self.len]; 1032 } 1033 1034 // round-trip as a json string instead of an array of numbers. 1035 pub fn jsonStringify(self: *const Array(max_len), jw: anytype) !void { 1036 try jw.write(self.slice()); 1037 } 1038 1039 pub fn jsonParse(allocator: std.mem.Allocator, source: anytype, options: std.json.ParseOptions) !Array(max_len) { 1040 const s = try std.json.innerParse([]const u8, allocator, source, options); 1041 // ValueTooLong is std.json's error for an over-long field. 1042 return from(s) orelse error.ValueTooLong; 1043 } 1044 }; 1045 } 1046 1047 pub fn toUrl(self: RoutablePage, arena: *std.heap.ArenaAllocator) ![]const u8 { 1048 return switch (self) { 1049 .home_about => "/", 1050 .home_users => |u| blk: { 1051 var out: std.Io.Writer.Allocating = .init(arena.allocator()); 1052 try out.writer.writeAll("/users"); 1053 try writeListWindow(&out.writer, u.search.slice(), u.start); 1054 break :blk out.written(); 1055 }, 1056 .home_new_repo => "/repo/new", 1057 .home_new_user => "/user/new", 1058 .home_auth => "/auth", 1059 .not_found => "/not-found", 1060 .user_repos => |u| blk: { 1061 var out: std.Io.Writer.Allocating = .init(arena.allocator()); 1062 try out.writer.print(user_segment ++ "{s}/repos", .{u.name.slice()}); 1063 try writeListWindow(&out.writer, u.search.slice(), u.start); 1064 break :blk out.written(); 1065 }, 1066 .user_forks => |u| if (u.start == 0) 1067 try std.fmt.allocPrint(arena.allocator(), user_segment ++ "{s}/forks", .{u.name.slice()}) 1068 else 1069 try std.fmt.allocPrint(arena.allocator(), user_segment ++ "{s}/forks/" ++ start_seg ++ "{d}", .{ u.name.slice(), u.start }), 1070 .user_new_repo => |name| try std.fmt.allocPrint(arena.allocator(), user_segment ++ "{s}/new-repo", .{name.slice()}), 1071 .user_new_user => |name| try std.fmt.allocPrint(arena.allocator(), user_segment ++ "{s}/new-user", .{name.slice()}), 1072 .user_auth => |name| try std.fmt.allocPrint(arena.allocator(), user_segment ++ "{s}/auth", .{name.slice()}), 1073 .repo_files => |f| blk: { 1074 const prefix = try repoUrlPrefix(arena, f.name.slice()); 1075 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; 1076 var out: std.Io.Writer.Allocating = .init(arena.allocator()); 1077 try out.writer.print("{s}/" ++ files_seg, .{prefix}); 1078 if (f.ref_kind) |kind| if (f.ref_value.len != 0) try out.writer.print("/{s}:{s}", .{ @tagName(kind), f.ref_value.slice() }); 1079 if (f.patchrev_id.len != 0) try out.writer.print("/patchrev:{s}", .{f.patchrev_id.slice()}); 1080 if (f.find.len != 0) try out.writer.print("/" ++ find_seg ++ "{s}", .{f.find.slice()}); 1081 if (f.line != 0) try out.writer.print("/" ++ line_seg ++ "{d}", .{f.line}); 1082 if (f.path.len != 0) try out.writer.print("/" ++ path_seg ++ "{s}", .{f.path.slice()}); 1083 break :blk out.written(); 1084 }, 1085 .repo_commits => |c| blk: { 1086 const prefix = try repoUrlPrefix(arena, c.name.slice()); 1087 var out: std.Io.Writer.Allocating = .init(arena.allocator()); 1088 try out.writer.print("{s}/" ++ commits_seg, .{prefix}); 1089 if (c.ref_or_oid) |kind| if (c.value.len != 0) try out.writer.print("/{s}:{s}", .{ @tagName(kind), c.value.slice() }); 1090 if (c.base_oid.len != 0) try out.writer.print("/" ++ base_seg ++ "{s}", .{c.base_oid.slice()}); 1091 if (c.search.len != 0) try out.writer.print("/" ++ search_seg ++ "{s}", .{c.search.slice()}); 1092 if (c.from.len != 0) try out.writer.print("/" ++ from_seg ++ "{s}", .{c.from.slice()}); 1093 if (c.merge.len != 0) try out.writer.print("/" ++ merge_seg ++ "{s}", .{c.merge.slice()}); 1094 if (c.message) try out.writer.print("/" ++ message_seg, .{}); 1095 break :blk out.written(); 1096 }, 1097 .repo_diff => |d| blk: { 1098 const prefix = try repoUrlPrefix(arena, d.name.slice()); 1099 var out: std.Io.Writer.Allocating = .init(arena.allocator()); 1100 try out.writer.print("{s}/diff", .{prefix}); 1101 if (d.ref_or_oid) |kind| if (d.value.len != 0) try out.writer.print("/{s}:{s}", .{ @tagName(kind), d.value.slice() }); 1102 if (d.patchrev_id.len != 0) try out.writer.print("/patchrev:{s}", .{d.patchrev_id.slice()}); 1103 if (d.base_oid.len != 0) try out.writer.print("/" ++ base_seg ++ "{s}", .{d.base_oid.slice()}); 1104 if (d.start != 0) try out.writer.print("/" ++ start_seg ++ "{d}", .{d.start}); 1105 if (d.path.len != 0) try out.writer.print("/" ++ path_seg ++ "{s}", .{d.path.slice()}); 1106 break :blk out.written(); 1107 }, 1108 .repo_refs => |r| blk: { 1109 var out: std.Io.Writer.Allocating = .init(arena.allocator()); 1110 try out.writer.print("{s}/refs", .{try repoUrlPrefix(arena, r.name.slice())}); 1111 if (r.from.len != 0) try out.writer.print("/{s}:{s}", .{ @tagName(r.kind), r.from.slice() }); 1112 if (r.search.len != 0) try out.writer.print("/" ++ search_seg ++ "{s}", .{r.search.slice()}); 1113 break :blk out.written(); 1114 }, 1115 .repo_issues => |i| blk: { 1116 const prefix = try repoUrlPrefix(arena, i.name.slice()); 1117 if (i.view == .edit) break :blk try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ issue_seg ++ "{s}/edit", .{ prefix, i.selected.slice() }); 1118 if (i.view == .description) break :blk try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ issue_seg ++ "{s}/description", .{ prefix, i.selected.slice() }); 1119 if (i.view == .resolve) break :blk if (i.theirs.len == 0) 1120 try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ issue_seg ++ "{s}/resolve", .{ prefix, i.selected.slice() }) 1121 else 1122 try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ issue_seg ++ "{s}/" ++ theirs_seg ++ "{s}/resolve", .{ prefix, i.selected.slice(), i.theirs.slice() }); 1123 if (i.view == .new_comment) break :blk if (i.comment.len == 0) 1124 try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ issue_seg ++ "{s}/new", .{ prefix, i.selected.slice() }) 1125 else 1126 try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ issue_seg ++ "{s}/" ++ comment_seg ++ "{s}/new", .{ prefix, i.selected.slice(), i.comment.slice() }); 1127 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() }); 1128 if (i.view == .remove) break :blk if (i.comment.len == 0) 1129 try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ issue_seg ++ "{s}/remove", .{ prefix, i.selected.slice() }) 1130 else 1131 try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ issue_seg ++ "{s}/" ++ comment_seg ++ "{s}/remove", .{ prefix, i.selected.slice(), i.comment.slice() }); 1132 if (i.view == .conflicts) break :blk if (i.selected.len == 0) 1133 try std.fmt.allocPrint(arena.allocator(), "{s}/issues/conflicts", .{prefix}) 1134 else 1135 try std.fmt.allocPrint(arena.allocator(), "{s}/issues/" ++ start_seg ++ "{s}/conflicts", .{ prefix, i.selected.slice() }); 1136 if (i.comment.len != 0) break :blk if (i.comments_start == 0) 1137 try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ issue_seg ++ "{s}/" ++ comment_seg ++ "{s}", .{ prefix, i.selected.slice(), i.comment.slice() }) 1138 else 1139 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 }); 1140 var out: std.Io.Writer.Allocating = .init(arena.allocator()); 1141 // the list the thread is selected in stays filtered, so paging 1142 // and reloading keep the label and the query 1143 if (i.selected.len != 0) { 1144 try out.writer.print("{s}/" ++ issue_seg ++ "{s}", .{ prefix, i.selected.slice() }); 1145 try writeListFilters(&out.writer, i.label.slice(), i.search.slice()); 1146 if (i.comments_start != 0) try out.writer.print("/" ++ start_seg ++ "{d}", .{i.comments_start}); 1147 break :blk out.written(); 1148 } 1149 try out.writer.print("{s}/issues/{s}", .{ prefix, @tagName(i.view) }); 1150 try writeListFilters(&out.writer, i.label.slice(), i.search.slice()); 1151 break :blk out.written(); 1152 }, 1153 .repo_patches => |p| blk: { 1154 const prefix = try repoUrlPrefix(arena, p.name.slice()); 1155 if (p.view == .edit) break :blk try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ patch_seg ++ "{s}/edit", .{ prefix, p.selected.slice() }); 1156 if (p.view == .publish) break :blk try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ patch_seg ++ "{s}/publish", .{ prefix, p.selected.slice() }); 1157 if (p.view == .merge) break :blk try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ patch_seg ++ "{s}/merge", .{ prefix, p.selected.slice() }); 1158 if (p.view == .description) break :blk try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ patch_seg ++ "{s}/description", .{ prefix, p.selected.slice() }); 1159 if (p.view == .resolve) break :blk if (p.theirs.len == 0) 1160 try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ patch_seg ++ "{s}/resolve", .{ prefix, p.selected.slice() }) 1161 else 1162 try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ patch_seg ++ "{s}/" ++ theirs_seg ++ "{s}/resolve", .{ prefix, p.selected.slice(), p.theirs.slice() }); 1163 if (p.view == .new_comment) break :blk if (p.comment.len == 0) 1164 try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ patch_seg ++ "{s}/new", .{ prefix, p.selected.slice() }) 1165 else 1166 try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ patch_seg ++ "{s}/" ++ comment_seg ++ "{s}/new", .{ prefix, p.selected.slice(), p.comment.slice() }); 1167 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() }); 1168 if (p.view == .remove) break :blk if (p.comment.len == 0) 1169 try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ patch_seg ++ "{s}/remove", .{ prefix, p.selected.slice() }) 1170 else 1171 try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ patch_seg ++ "{s}/" ++ comment_seg ++ "{s}/remove", .{ prefix, p.selected.slice(), p.comment.slice() }); 1172 if (p.view == .conflicts) break :blk if (p.selected.len == 0) 1173 try std.fmt.allocPrint(arena.allocator(), "{s}/patches/conflicts", .{prefix}) 1174 else 1175 try std.fmt.allocPrint(arena.allocator(), "{s}/patches/" ++ start_seg ++ "{s}/conflicts", .{ prefix, p.selected.slice() }); 1176 if (p.comment.len != 0) break :blk if (p.comments_start == 0) 1177 try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ patch_seg ++ "{s}/" ++ comment_seg ++ "{s}", .{ prefix, p.selected.slice(), p.comment.slice() }) 1178 else 1179 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 }); 1180 var out: std.Io.Writer.Allocating = .init(arena.allocator()); 1181 // the list the thread is selected in stays filtered, so paging 1182 // and reloading keep the label and the query 1183 if (p.selected.len != 0) { 1184 try out.writer.print("{s}/" ++ patch_seg ++ "{s}", .{ prefix, p.selected.slice() }); 1185 try writeListFilters(&out.writer, p.label.slice(), p.search.slice()); 1186 if (p.comments_start != 0) try out.writer.print("/" ++ start_seg ++ "{d}", .{p.comments_start}); 1187 break :blk out.written(); 1188 } 1189 try out.writer.print("{s}/patches/{s}", .{ prefix, @tagName(p.view) }); 1190 try writeListFilters(&out.writer, p.label.slice(), p.search.slice()); 1191 break :blk out.written(); 1192 }, 1193 .repo_discussions => |t| blk: { 1194 const prefix = try repoUrlPrefix(arena, t.name.slice()); 1195 if (t.view == .edit) break :blk try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ discuss_seg ++ "{s}/edit", .{ prefix, t.selected.slice() }); 1196 if (t.view == .description) break :blk try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ discuss_seg ++ "{s}/description", .{ prefix, t.selected.slice() }); 1197 if (t.view == .new_comment) break :blk if (t.comment.len == 0) 1198 try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ discuss_seg ++ "{s}/new", .{ prefix, t.selected.slice() }) 1199 else 1200 try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ discuss_seg ++ "{s}/" ++ comment_seg ++ "{s}/new", .{ prefix, t.selected.slice(), t.comment.slice() }); 1201 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() }); 1202 if (t.view == .remove) break :blk if (t.comment.len == 0) 1203 try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ discuss_seg ++ "{s}/remove", .{ prefix, t.selected.slice() }) 1204 else 1205 try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ discuss_seg ++ "{s}/" ++ comment_seg ++ "{s}/remove", .{ prefix, t.selected.slice(), t.comment.slice() }); 1206 if (t.comment.len != 0) break :blk if (t.comments_start == 0) 1207 try std.fmt.allocPrint(arena.allocator(), "{s}/" ++ discuss_seg ++ "{s}/" ++ comment_seg ++ "{s}", .{ prefix, t.selected.slice(), t.comment.slice() }) 1208 else 1209 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 }); 1210 var out: std.Io.Writer.Allocating = .init(arena.allocator()); 1211 // the list the thread is selected in stays filtered, so paging 1212 // and reloading keep the label and the query 1213 if (t.selected.len != 0) { 1214 try out.writer.print("{s}/" ++ discuss_seg ++ "{s}", .{ prefix, t.selected.slice() }); 1215 try writeListFilters(&out.writer, t.label.slice(), t.search.slice()); 1216 if (t.comments_start != 0) try out.writer.print("/" ++ start_seg ++ "{d}", .{t.comments_start}); 1217 break :blk out.written(); 1218 } 1219 try out.writer.print("{s}/discussions/{s}", .{ prefix, @tagName(t.view) }); 1220 try writeListFilters(&out.writer, t.label.slice(), t.search.slice()); 1221 break :blk out.written(); 1222 }, 1223 .repo_undo => |u| blk: { 1224 const prefix = try repoUrlPrefix(arena, u.name.slice()); 1225 break :blk if (u.clear) 1226 try std.fmt.allocPrint(arena.allocator(), "{s}/undo/clear", .{prefix}) 1227 else if (u.index) |index| 1228 try std.fmt.allocPrint(arena.allocator(), "{s}/undo/{d}", .{ prefix, index }) 1229 else 1230 try std.fmt.allocPrint(arena.allocator(), "{s}/undo", .{prefix}); 1231 }, 1232 .repo_events => |e| blk: { 1233 const prefix = try repoUrlPrefix(arena, e.name.slice()); 1234 const moment = if (e.moment) |value| try std.fmt.allocPrint(arena.allocator(), "/moment:{d}", .{value}) else ""; 1235 break :blk if (e.kind) |kind| 1236 try std.fmt.allocPrint(arena.allocator(), "{s}/event:{s}/kind:{s}{s}", .{ prefix, e.selected.slice(), @tagName(kind), moment }) 1237 else 1238 try std.fmt.allocPrint(arena.allocator(), "{s}/events/{s}{s}", .{ prefix, @tagName(e.view), moment }); 1239 }, 1240 .repo_new_repo => |name| try std.fmt.allocPrint(arena.allocator(), "{s}/new-repo", .{try repoUrlPrefix(arena, name.slice())}), 1241 .repo_new_user => |name| try std.fmt.allocPrint(arena.allocator(), "{s}/new-user", .{try repoUrlPrefix(arena, name.slice())}), 1242 .repo_auth => |name| try std.fmt.allocPrint(arena.allocator(), "{s}/auth", .{try repoUrlPrefix(arena, name.slice())}), 1243 .fork_patch => |f| try std.fmt.allocPrint(arena.allocator(), fork_segment ++ "{s}/" ++ patch_seg ++ "{s}", .{ f.name.slice(), f.id.slice() }), 1244 .fork_diff => |d| blk: { 1245 var out: std.Io.Writer.Allocating = .init(arena.allocator()); 1246 try out.writer.print(fork_segment ++ "{s}/" ++ patch_seg ++ "{s}/diff", .{ d.fork.name.slice(), d.fork.id.slice() }); 1247 if (d.oid.len != 0) try out.writer.print("/object:{s}/" ++ base_seg ++ "{s}", .{ d.oid.slice(), d.base_oid.slice() }); 1248 if (d.start != 0) try out.writer.print("/" ++ start_seg ++ "{d}", .{d.start}); 1249 if (d.path.len != 0) try out.writer.print("/" ++ path_seg ++ "{s}", .{d.path.slice()}); 1250 break :blk out.written(); 1251 }, 1252 .fork_files => |f| blk: { 1253 var out: std.Io.Writer.Allocating = .init(arena.allocator()); 1254 try out.writer.print(fork_segment ++ "{s}/" ++ patch_seg ++ "{s}/" ++ files_seg, .{ f.fork.name.slice(), f.fork.id.slice() }); 1255 if (f.oid.len != 0) try out.writer.print("/object:{s}", .{f.oid.slice()}); 1256 if (f.find.len != 0) try out.writer.print("/" ++ find_seg ++ "{s}", .{f.find.slice()}); 1257 if (f.line != 0) try out.writer.print("/" ++ line_seg ++ "{d}", .{f.line}); 1258 if (f.path.len != 0) try out.writer.print("/" ++ path_seg ++ "{s}", .{f.path.slice()}); 1259 break :blk out.written(); 1260 }, 1261 .fork_commits => |c| blk: { 1262 var out: std.Io.Writer.Allocating = .init(arena.allocator()); 1263 try out.writer.print(fork_segment ++ "{s}/" ++ patch_seg ++ "{s}/" ++ commits_seg, .{ c.fork.name.slice(), c.fork.id.slice() }); 1264 if (c.oid.len != 0) try out.writer.print("/object:{s}", .{c.oid.slice()}); 1265 if (c.message) try out.writer.print("/" ++ message_seg, .{}); 1266 break :blk out.written(); 1267 }, 1268 .fork_new_repo => |f| try std.fmt.allocPrint(arena.allocator(), fork_segment ++ "{s}/" ++ patch_seg ++ "{s}/new-repo", .{ f.name.slice(), f.id.slice() }), 1269 .fork_new_user => |f| try std.fmt.allocPrint(arena.allocator(), fork_segment ++ "{s}/" ++ patch_seg ++ "{s}/new-user", .{ f.name.slice(), f.id.slice() }), 1270 .fork_auth => |f| try std.fmt.allocPrint(arena.allocator(), fork_segment ++ "{s}/" ++ patch_seg ++ "{s}/auth", .{ f.name.slice(), f.id.slice() }), 1271 }; 1272 } 1273 1274 pub fn fromUrl(path: []const u8) ?RoutablePage { 1275 if (std.mem.eql(u8, path, "/")) return default; 1276 if (path.len < 2 or path[0] != '/') return null; 1277 var segments = std.mem.splitScalar(u8, path[1..], '/'); 1278 const first = segments.next() orelse return null; 1279 if (std.mem.eql(u8, first, "users")) { 1280 const params = listParams(&segments, &.{ .start, .search }) orelse return null; 1281 return withEncodedSearch(.{ .home_users = .{ .start = params.start() orelse return null } }, params.values.get(.search) orelse ""); 1282 } 1283 if (std.mem.eql(u8, first, "auth")) return if (segments.next() == null) .home_auth else null; 1284 // "user/<name>[/repos[/search:<s>][/start:<n>]|/new-repo|/new-user|/auth]" 1285 if (std.mem.eql(u8, first, "user")) { 1286 const name = segments.next() orelse return null; 1287 if (name.len == 0) return null; 1288 // "/user/new" is the home page's new user tab, not a user 1289 if (std.mem.eql(u8, name, "new") and segments.peek() == null) return .home_new_user; 1290 const parsed = Array(evt.User.name_max_len).from(name) orelse return null; // name too long 1291 const sub = segments.next() orelse return .{ .user_repos = .{ .name = parsed } }; 1292 if (std.mem.eql(u8, sub, "repos")) { 1293 const params = listParams(&segments, &.{ .start, .search }) orelse return null; 1294 return withEncodedSearch(.{ .user_repos = .{ .name = parsed, .start = params.start() orelse return null } }, params.values.get(.search) orelse ""); 1295 } 1296 if (std.mem.eql(u8, sub, "forks")) return .{ .user_forks = .{ .name = parsed, .start = listStart(&segments) orelse return null } }; 1297 if (std.mem.eql(u8, sub, "new-repo")) return if (segments.next() == null) .{ .user_new_repo = parsed } else null; 1298 if (std.mem.eql(u8, sub, "new-user")) return if (segments.next() == null) .{ .user_new_user = parsed } else null; 1299 if (std.mem.eql(u8, sub, "auth")) return if (segments.next() == null) .{ .user_auth = parsed } else null; 1300 return null; // unknown sub-path 1301 } 1302 // "fork/<forker>/<reponame>/patch:<id>[/files|/commits]"; the 1303 // patch branch is implicit, while object ids and view-specific params 1304 // use the same tails as the repo files and commits routes. 1305 if (std.mem.eql(u8, first, "fork")) { 1306 const rest = segments.rest(); 1307 const owner = segments.next() orelse return null; 1308 const repo_name = segments.next() orelse return null; 1309 if (owner.len == 0 or repo_name.len == 0) return null; 1310 const identity = rest[0 .. owner.len + 1 + repo_name.len]; 1311 const patch = segments.next() orelse return null; 1312 if (!std.mem.startsWith(u8, patch, patch_seg)) return null; 1313 const id = patch[patch_seg.len..]; 1314 if (id.len != evt.event_id_size * 2) return null; 1315 const tab = segments.next() orelse return forkPatchRoute(identity, id); 1316 var params = Params{}; 1317 if (std.mem.eql(u8, tab, "diff")) { 1318 params.scanPairs(&segments) catch return null; 1319 if (!params.only(&.{ .start, .object, .base })) return null; 1320 const ref = params.ref() catch return null; 1321 const oid = if (ref) |value| if (value.kind == .object) value.value else return null else ""; 1322 return forkDiffRoute(identity, id, oid, params.values.get(.base) orelse "", params.start() orelse return null, pathValue(segments.rest()) orelse return null); 1323 } 1324 if (std.mem.eql(u8, tab, files_seg)) { 1325 params.scanPairs(&segments) catch return null; 1326 if (!params.only(&.{ .line, .object, .find })) return null; 1327 const line = params.line() orelse return null; 1328 const ref = params.ref() catch return null; 1329 const oid = if (ref) |value| if (value.kind == .object) value.value else return null else ""; 1330 const file_path = pathValue(segments.rest()) orelse return null; 1331 var route = forkFilesRoute(identity, id, oid, file_path, line) orelse return null; 1332 if (params.values.get(.find)) |find| route.fork_files.find = Array(find_route_max_len).from(find) orelse return null; 1333 return route; 1334 } 1335 if (std.mem.eql(u8, tab, commits_seg)) { 1336 params.scanPairs(&segments) catch return null; 1337 if (!params.only(&.{.object})) return null; 1338 const ref = params.ref() catch return null; 1339 const oid = if (ref) |value| if (value.kind == .object) value.value else return null else ""; 1340 if (std.mem.eql(u8, segments.rest(), message_seg)) 1341 return if (oid.len != 0) forkCommitMessageRoute(identity, id, oid) else null; 1342 return if (segments.rest().len == 0) forkCommitsRoute(identity, id, oid) else null; 1343 } 1344 if (std.mem.eql(u8, tab, "new-repo")) return if (segments.next() == null) forkNewRepoRoute(identity, id) else null; 1345 if (std.mem.eql(u8, tab, "new-user")) return if (segments.next() == null) forkNewUserRoute(identity, id) else null; 1346 if (std.mem.eql(u8, tab, "auth")) return if (segments.next() == null) forkAuthRoute(identity, id) else null; 1347 return null; 1348 } 1349 // "repo/<username>/<reponame>[/<tab tail>]"; the bare pair is the 1350 // files root 1351 if (std.mem.eql(u8, first, "repo")) { 1352 const rest = segments.rest(); // "username/reponame[/...]" 1353 const owner = segments.next() orelse return null; 1354 // "/repo/new" is the home page's new repo tab, not a repo 1355 if (std.mem.eql(u8, owner, "new") and segments.peek() == null) return .home_new_repo; 1356 const repo_name = segments.next() orelse return null; 1357 // reject an empty username or reponame 1358 if (owner.len == 0 or repo_name.len == 0) return null; 1359 const pair = rest[0 .. owner.len + 1 + repo_name.len]; // "username/reponame" 1360 if (segments.peek() != null) { 1361 return repoSubRoute(pair, segments.rest()); 1362 } 1363 return repoFilesRoute(pair, null, "", "", 0); 1364 } 1365 return null; 1366 } 1367 1368 // parse a local-mode url, which elides the "/repo/<owner>/<name>" prefix: 1369 // "/" is the files root and the sub-paths follow directly. 1370 pub fn fromUrlLocal(path: []const u8) ?RoutablePage { 1371 if (std.mem.eql(u8, path, "/")) return repoFilesRoute("", null, "", "", 0); 1372 if (path.len < 2 or path[0] != '/') return null; 1373 return repoSubRoute("", path[1..]); 1374 } 1375 1376 // the url prefix for a repo route's identity: "/repo/<identity>", or "" 1377 // when the identity is elided. 1378 fn repoUrlPrefix(arena: *std.heap.ArenaAllocator, identity: []const u8) ![]const u8 { 1379 if (identity.len == 0) return ""; 1380 return std.fmt.allocPrint(arena.allocator(), repo_segment ++ "{s}", .{identity}); 1381 } 1382 1383 // true when the page builds at its content height on the web, letting the 1384 // browser scroll the whole page, rather than being pinned to the viewport 1385 pub fn fullHeight(self: RoutablePage) bool { 1386 return switch (self) { 1387 .repo_issues => |i| i.view == .resolve, 1388 .repo_patches => |p| p.view == .resolve, 1389 else => false, 1390 }; 1391 } 1392 1393 // the "owner/name" a repo route carries, null for any other route. the 1394 // result borrows the route, so it must outlive the slice. 1395 pub fn repoIdentity(self: *const RoutablePage) ?[]const u8 { 1396 return switch (self.*) { 1397 .repo_files => |*f| f.name.slice(), 1398 .repo_commits => |*c| c.name.slice(), 1399 .repo_diff => |*d| d.name.slice(), 1400 .repo_refs => |*r| r.name.slice(), 1401 .repo_issues => |*i| i.name.slice(), 1402 .repo_patches => |*p| p.name.slice(), 1403 .repo_discussions => |*t| t.name.slice(), 1404 .repo_events => |*e| e.name.slice(), 1405 .repo_undo => |*u| u.name.slice(), 1406 .repo_new_repo, .repo_new_user, .repo_auth => |*name| name.slice(), 1407 else => null, 1408 }; 1409 } 1410 1411 pub fn forkRoute(self: *const RoutablePage) ?*const ForkRoute { 1412 return switch (self.*) { 1413 .fork_patch => |*f| f, 1414 .fork_diff => |*d| &d.fork, 1415 .fork_files => |*f| &f.fork, 1416 .fork_commits => |*f| &f.fork, 1417 .fork_new_repo => |*f| f, 1418 .fork_new_user => |*f| f, 1419 .fork_auth => |*f| f, 1420 else => null, 1421 }; 1422 } 1423 1424 // the route this route's page lands on, with no tab or params: the users 1425 // list, a user's repos, or a repo's files root. 1426 pub fn pageRoot(self: RoutablePage) RoutablePage { 1427 return switch (self.parent()) { 1428 .home => .default, 1429 .user => switch (self) { 1430 .user_repos => |u| .{ .user_repos = .{ .name = u.name } }, 1431 .user_forks => |u| .{ .user_repos = .{ .name = u.name } }, 1432 .user_new_repo, .user_new_user, .user_auth => |name| .{ .user_repos = .{ .name = name } }, 1433 else => self, 1434 }, 1435 // every repo route stores the same identity, so it always fits 1436 .repo => repoFilesRoute(self.repoIdentity() orelse return self, null, "", "", 0) orelse self, 1437 .fork => blk: { 1438 const f = self.forkRoute() orelse break :blk self; 1439 break :blk forkPatchRoute(f.name.slice(), f.id.slice()) orelse self; 1440 }, 1441 .not_found => self, 1442 }; 1443 } 1444 1445 pub fn parent(self: RoutablePage) PageKind { 1446 return switch (self) { 1447 .home_about, .home_users, .home_new_repo, .home_new_user, .home_auth => .home, 1448 .user_repos, .user_forks, .user_new_repo, .user_new_user, .user_auth => .user, 1449 .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_auth => .repo, 1450 .fork_patch, .fork_diff, .fork_files, .fork_commits, .fork_new_repo, .fork_new_user, .fork_auth => .fork, 1451 .not_found => .not_found, 1452 }; 1453 } 1454 1455 // the dir a trailing "path:<dir>" names: the raw remainder ("" when 1456 // absent, null when malformed) 1457 fn pathValue(rest: []const u8) ?[]const u8 { 1458 if (rest.len == 0) return ""; 1459 if (!std.mem.startsWith(u8, rest, path_seg)) return null; 1460 const dir = rest[path_seg.len..]; 1461 return if (dir.len == 0) null else dir; 1462 } 1463 1464 // a list route's tail: at most a "start:<n>" param, null on anything else 1465 fn listStart(segments: *std.mem.SplitIterator(u8, .scalar)) ?usize { 1466 const params = listParams(segments, &.{.start}) orelse return null; 1467 return params.start(); 1468 } 1469 1470 // a list route's tail of `allowed` params, null on anything else 1471 fn listParams(segments: *std.mem.SplitIterator(u8, .scalar), allowed: []const Params.ParamKey) ?Params { 1472 var params = Params{}; 1473 const word = params.scanTail(segments) catch return null; 1474 if (word != null or !params.only(allowed)) return null; 1475 return params; 1476 } 1477 1478 // a searchable list url's search and window segments, each optional 1479 fn writeListWindow(writer: *std.Io.Writer, search: []const u8, start: usize) !void { 1480 if (search.len != 0) try writer.print("/" ++ search_seg ++ "{s}", .{search}); 1481 if (start != 0) try writer.print("/" ++ start_seg ++ "{d}", .{start}); 1482 } 1483 1484 // parse the sub-path after a repo route's identity ("" for a local 1485 // route): a tab keyword followed by "key:value" params in any order, plus 1486 // the files tab's trailing "path:<dir>". 1487 fn repoSubRoute(pair: []const u8, sub: []const u8) ?RoutablePage { 1488 var segments = std.mem.splitScalar(u8, sub, '/'); 1489 const tab = segments.next() orelse return null; 1490 var params = Params{}; 1491 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; 1492 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; 1493 if (std.mem.eql(u8, tab, "auth")) return if (segments.next() == null) .{ .repo_auth = Array(repo_route_max_len).from(pair) orelse return null } else null; 1494 if (std.mem.eql(u8, tab, "refs")) { 1495 const word = params.scanTail(&segments) catch return null; 1496 if (word != null or !params.only(&.{ .branch, .tag, .search })) return null; 1497 const ref = params.ref() catch return null; 1498 const kind: RefKind = if (ref) |r| std.meta.stringToEnum(RefKind, @tagName(r.kind)) orelse return null else .branch; 1499 const from = if (ref) |r| r.value else ""; 1500 return withEncodedSearch(repoRefsRoute(pair, kind, from), params.values.get(.search) orelse ""); 1501 } 1502 if (std.mem.startsWith(u8, tab, issue_seg)) { 1503 const issue_id = tab[issue_seg.len..]; 1504 if (issue_id.len == 0) return null; 1505 if (segments.peek()) |tail| { 1506 if (std.mem.startsWith(u8, tail, comment_seg)) { 1507 _ = segments.next(); 1508 const comment_id = tail[comment_seg.len..]; 1509 if (comment_id.len == 0) return null; 1510 const word = params.scanTail(&segments) catch return null; 1511 if (word) |last| { 1512 if (!params.only(&.{})) return null; 1513 if (std.mem.eql(u8, last, "new")) return repoThreadCommentNewRoute(.issue, pair, issue_id, comment_id); 1514 if (std.mem.eql(u8, last, "edit")) return repoThreadCommentEditRoute(.issue, pair, issue_id, comment_id); 1515 if (std.mem.eql(u8, last, "remove")) return repoThreadRemoveRoute(.issue, pair, issue_id, comment_id); 1516 return null; 1517 } 1518 if (!params.only(&.{.start})) return null; 1519 return repoThreadCommentRoute(.issue, pair, issue_id, comment_id, params.start() orelse return null); 1520 } 1521 } 1522 const word = params.scanTail(&segments) catch return null; 1523 if (word) |tail| { 1524 if (std.mem.eql(u8, tail, "new")) return if (params.only(&.{})) repoThreadCommentNewRoute(.issue, pair, issue_id, "") else null; 1525 if (std.mem.eql(u8, tail, "edit")) return if (params.only(&.{})) repoThreadEditRoute(.issue, pair, issue_id) else null; 1526 if (std.mem.eql(u8, tail, "remove")) return if (params.only(&.{})) repoThreadRemoveRoute(.issue, pair, issue_id, "") else null; 1527 if (std.mem.eql(u8, tail, "description")) return if (params.only(&.{})) repoThreadDescriptionRoute(.issue, pair, issue_id) else null; 1528 if (std.mem.eql(u8, tail, "resolve")) { 1529 if (!params.only(&.{.theirs})) return null; 1530 return repoIssuesResolveRoute(pair, issue_id, params.values.get(.theirs) orelse ""); 1531 } 1532 return null; 1533 } 1534 if (!params.only(&.{ .start, .label, .search })) return null; 1535 return withEncodedFilters(repoThreadCommentsRoute(.issue, pair, issue_id, params.start() orelse return null), params.values.get(.label) orelse "", params.values.get(.search) orelse ""); 1536 } 1537 if (std.mem.startsWith(u8, tab, patch_seg)) { 1538 const patch_id = tab[patch_seg.len..]; 1539 if (patch_id.len == 0) return null; 1540 if (segments.peek()) |tail| { 1541 if (std.mem.startsWith(u8, tail, comment_seg)) { 1542 _ = segments.next(); 1543 const comment_id = tail[comment_seg.len..]; 1544 if (comment_id.len == 0) return null; 1545 const word = params.scanTail(&segments) catch return null; 1546 if (word) |last| { 1547 if (!params.only(&.{})) return null; 1548 if (std.mem.eql(u8, last, "new")) return repoThreadCommentNewRoute(.patch, pair, patch_id, comment_id); 1549 if (std.mem.eql(u8, last, "edit")) return repoThreadCommentEditRoute(.patch, pair, patch_id, comment_id); 1550 if (std.mem.eql(u8, last, "remove")) return repoThreadRemoveRoute(.patch, pair, patch_id, comment_id); 1551 return null; 1552 } 1553 if (!params.only(&.{.start})) return null; 1554 return repoThreadCommentRoute(.patch, pair, patch_id, comment_id, params.start() orelse return null); 1555 } 1556 } 1557 const word = params.scanTail(&segments) catch return null; 1558 if (word) |tail| { 1559 if (std.mem.eql(u8, tail, "new")) return if (params.only(&.{})) repoThreadCommentNewRoute(.patch, pair, patch_id, "") else null; 1560 if (std.mem.eql(u8, tail, "edit")) return if (params.only(&.{})) repoThreadEditRoute(.patch, pair, patch_id) else null; 1561 if (std.mem.eql(u8, tail, "publish")) return if (params.only(&.{})) repoPatchPublishRoute(pair, patch_id) else null; 1562 if (std.mem.eql(u8, tail, "merge")) return if (params.only(&.{})) repoPatchMergeRoute(pair, patch_id) else null; 1563 if (std.mem.eql(u8, tail, "remove")) return if (params.only(&.{})) repoThreadRemoveRoute(.patch, pair, patch_id, "") else null; 1564 if (std.mem.eql(u8, tail, "description")) return if (params.only(&.{})) repoThreadDescriptionRoute(.patch, pair, patch_id) else null; 1565 if (std.mem.eql(u8, tail, "resolve")) { 1566 if (!params.only(&.{.theirs})) return null; 1567 return repoPatchesResolveRoute(pair, patch_id, params.values.get(.theirs) orelse ""); 1568 } 1569 return null; 1570 } 1571 if (!params.only(&.{ .start, .label, .search })) return null; 1572 return withEncodedFilters(repoThreadCommentsRoute(.patch, pair, patch_id, params.start() orelse return null), params.values.get(.label) orelse "", params.values.get(.search) orelse ""); 1573 } 1574 if (std.mem.startsWith(u8, tab, discuss_seg)) { 1575 const discussion_id = tab[discuss_seg.len..]; 1576 if (discussion_id.len == 0) return null; 1577 if (segments.peek()) |tail| { 1578 if (std.mem.startsWith(u8, tail, comment_seg)) { 1579 _ = segments.next(); 1580 const comment_id = tail[comment_seg.len..]; 1581 if (comment_id.len == 0) return null; 1582 const word = params.scanTail(&segments) catch return null; 1583 if (word) |last| { 1584 if (!params.only(&.{})) return null; 1585 if (std.mem.eql(u8, last, "new")) return repoThreadCommentNewRoute(.discuss, pair, discussion_id, comment_id); 1586 if (std.mem.eql(u8, last, "edit")) return repoThreadCommentEditRoute(.discuss, pair, discussion_id, comment_id); 1587 if (std.mem.eql(u8, last, "remove")) return repoThreadRemoveRoute(.discuss, pair, discussion_id, comment_id); 1588 return null; 1589 } 1590 if (!params.only(&.{.start})) return null; 1591 return repoThreadCommentRoute(.discuss, pair, discussion_id, comment_id, params.start() orelse return null); 1592 } 1593 } 1594 const word = params.scanTail(&segments) catch return null; 1595 if (word) |tail| { 1596 if (std.mem.eql(u8, tail, "new")) return if (params.only(&.{})) repoThreadCommentNewRoute(.discuss, pair, discussion_id, "") else null; 1597 if (std.mem.eql(u8, tail, "edit")) return if (params.only(&.{})) repoThreadEditRoute(.discuss, pair, discussion_id) else null; 1598 if (std.mem.eql(u8, tail, "remove")) return if (params.only(&.{})) repoThreadRemoveRoute(.discuss, pair, discussion_id, "") else null; 1599 if (std.mem.eql(u8, tail, "description")) return if (params.only(&.{})) repoThreadDescriptionRoute(.discuss, pair, discussion_id) else null; 1600 return null; 1601 } 1602 if (!params.only(&.{ .start, .label, .search })) return null; 1603 return withEncodedFilters(repoThreadCommentsRoute(.discuss, pair, discussion_id, params.start() orelse return null), params.values.get(.label) orelse "", params.values.get(.search) orelse ""); 1604 } 1605 if (std.mem.eql(u8, tab, "issues")) { 1606 // the word is a list view; a filter with neither is never emitted. 1607 const word = params.scanTail(&segments) catch return null; 1608 const label_value = params.values.get(.label) orelse ""; 1609 const w = word orelse return if (params.only(&.{})) repoIssuesRoute(pair, .open, "", "") else null; 1610 // the conflicts list windows by an issue id, not a number, so it 1611 // reads the start param raw 1612 if (std.mem.eql(u8, w, "conflicts")) { 1613 if (!params.only(&.{.start})) return null; 1614 return repoIssuesConflictsRoute(pair, params.values.get(.start) orelse ""); 1615 } 1616 if (!params.only(&.{ .label, .search })) return null; 1617 const search_value = params.values.get(.search) orelse ""; 1618 if (std.meta.stringToEnum(evt.Issue.Status, w)) |status| return withEncodedSearch(repoIssuesRoute(pair, status, label_value, ""), search_value); 1619 if (std.mem.eql(u8, w, "labels")) return withEncodedSearch(repoThreadLabelsRoute(.issue, pair, label_value), search_value); 1620 if (std.mem.eql(u8, w, "new")) return if (label_value.len == 0 and search_value.len == 0) repoThreadNewRoute(.issue, pair) else null; 1621 return null; 1622 } 1623 if (std.mem.eql(u8, tab, "patches")) { 1624 const word = params.scanTail(&segments) catch return null; 1625 const label_value = params.values.get(.label) orelse ""; 1626 const view = word orelse return if (params.only(&.{})) repoPatchesRoute(pair, .open, "", "") else null; 1627 if (std.mem.eql(u8, view, "conflicts")) { 1628 if (!params.only(&.{.start})) return null; 1629 return repoPatchesConflictsRoute(pair, params.values.get(.start) orelse ""); 1630 } 1631 if (!params.only(&.{ .label, .search })) return null; 1632 const search_value = params.values.get(.search) orelse ""; 1633 if (std.meta.stringToEnum(evt.Patch.StatusKind, view)) |status| return withEncodedSearch(repoPatchesRoute(pair, status, label_value, ""), search_value); 1634 if (std.mem.eql(u8, view, "labels")) return withEncodedSearch(repoThreadLabelsRoute(.patch, pair, label_value), search_value); 1635 if (std.mem.eql(u8, view, "new")) return if (label_value.len == 0 and search_value.len == 0) repoThreadNewRoute(.patch, pair) else null; 1636 if (std.mem.eql(u8, view, "drafts")) return if (label_value.len == 0 and search_value.len == 0) repoPatchesDraftsRoute(pair) else null; 1637 return null; 1638 } 1639 if (std.mem.eql(u8, tab, "discussions")) { 1640 const word = params.scanTail(&segments) catch return null; 1641 const label_value = params.values.get(.label) orelse ""; 1642 const view = word orelse return if (params.only(&.{})) repoDiscussionsRoute(pair, "", "") else null; 1643 if (!params.only(&.{ .label, .search })) return null; 1644 const search_value = params.values.get(.search) orelse ""; 1645 if (std.mem.eql(u8, view, "recent")) return withEncodedSearch(repoDiscussionsRoute(pair, label_value, ""), search_value); 1646 if (std.mem.eql(u8, view, "labels")) return withEncodedSearch(repoThreadLabelsRoute(.discuss, pair, label_value), search_value); 1647 if (std.mem.eql(u8, view, "new")) return if (label_value.len == 0 and search_value.len == 0) repoThreadNewRoute(.discuss, pair) else null; 1648 return null; 1649 } 1650 if (std.mem.eql(u8, tab, "undo")) { 1651 const word = segments.next(); 1652 if (segments.next() != null) return null; 1653 const value = word orelse return repoUndoRoute(pair, null); 1654 if (std.mem.eql(u8, value, "clear")) return repoUndoClearRoute(pair); 1655 return repoUndoRoute(pair, std.fmt.parseInt(u64, value, 10) catch return null); 1656 } 1657 if (std.mem.eql(u8, tab, "events")) { 1658 const word = params.scanTail(&segments) catch return null; 1659 if (!params.only(&.{.moment})) return null; 1660 const view = if (word) |value| std.meta.stringToEnum(EventsView, value) orelse return null else .active; 1661 return repoEventsRoute(pair, view, null, "", params.moment() catch return null); 1662 } 1663 if (std.mem.startsWith(u8, tab, "event:")) { 1664 const event_id = tab["event:".len..]; 1665 const kind_segment = segments.next() orelse return null; 1666 if (!std.mem.startsWith(u8, kind_segment, "kind:")) return null; 1667 const kind = std.meta.stringToEnum(evt.EventKind, kind_segment["kind:".len..]) orelse return null; 1668 if (event_id.len == 0) return null; 1669 params.scanPairs(&segments) catch return null; 1670 if (!params.only(&.{.moment}) or segments.next() != null) return null; 1671 return repoEventsRoute(pair, .active, kind, event_id, params.moment() catch return null); 1672 } 1673 if (std.mem.eql(u8, tab, files_seg)) { 1674 params.scanPairs(&segments) catch return null; 1675 if (params.values.get(.patchrev)) |id| { 1676 if (!params.only(&.{ .line, .patchrev })) return null; 1677 return repoPatchRevFilesRoute(pair, id, pathValue(segments.rest()) orelse return null, params.line() orelse return null); 1678 } 1679 if (!params.only(&.{ .line, .branch, .tag, .object, .find })) return null; 1680 const line = params.line() orelse return null; 1681 const dir = pathValue(segments.rest()) orelse return null; 1682 const find = params.values.get(.find) orelse ""; 1683 const ref = params.ref() catch return null; 1684 // a find route's `path` names the selected result, so unlike a 1685 // directory path it doesn't need a ref beside it 1686 var route = if (ref) |r| 1687 repoFilesRoute(pair, r.kind, r.value, dir, line) orelse return null 1688 else if (dir.len == 0 or find.len != 0) 1689 repoFilesRoute(pair, null, "", "", line) orelse return null 1690 else 1691 return null; 1692 if (find.len != 0) { 1693 route.repo_files.find = Array(find_route_max_len).from(find) orelse return null; 1694 route.repo_files.path = Array(repo_route_max_len).from(dir) orelse return null; 1695 } 1696 return route; 1697 } 1698 if (std.mem.eql(u8, tab, commits_seg)) { 1699 params.scanPairs(&segments) catch return null; 1700 if (params.values.get(.merge)) |oid| { 1701 if (!params.only(&.{.merge}) or segments.next() != null) return null; 1702 return repoCommitsMergeRoute(pair, oid); 1703 } 1704 if (!params.only(&.{ .branch, .tag, .object, .base, .search, .from })) return null; 1705 const base_oid = params.values.get(.base) orelse ""; 1706 const search = params.values.get(.search) orelse ""; 1707 const from = params.values.get(.from) orelse ""; 1708 const ref = (params.ref() catch return null) orelse { 1709 if (search.len != 0 or from.len != 0 or segments.rest().len != 0) return null; 1710 return repoCommitsRoute(pair, null, "", base_oid); 1711 }; 1712 // the index covers branch and tag tips, so only they can be 1713 // searched or paged by commit; an object roots the list itself 1714 if ((search.len != 0 or from.len != 0) and ref.kind == .object) return null; 1715 var route = if (std.mem.eql(u8, segments.rest(), message_seg)) 1716 repoCommitMessageRoute(pair, ref.kind, ref.value, base_oid) orelse return null 1717 else if (segments.rest().len == 0) 1718 repoCommitsRoute(pair, ref.kind, ref.value, base_oid) orelse return null 1719 else 1720 return null; 1721 if (search.len != 0) route.repo_commits.search = Array(search_route_max_len).from(search) orelse return null; 1722 if (from.len != 0) route.repo_commits.from = Array(ref_route_max_len).from(from) orelse return null; 1723 return route; 1724 } 1725 if (std.mem.eql(u8, tab, "diff")) { 1726 params.scanPairs(&segments) catch return null; 1727 if (params.values.get(.patchrev)) |id| { 1728 if (!params.only(&.{ .start, .patchrev })) return null; 1729 return repoPatchRevDiffRoute(pair, id, params.start() orelse return null, pathValue(segments.rest()) orelse return null); 1730 } 1731 if (!params.only(&.{ .start, .branch, .tag, .object, .base })) return null; 1732 const base_oid = params.values.get(.base) orelse return null; 1733 const start = params.start() orelse return null; 1734 const ref = params.ref() catch return null; 1735 const file = pathValue(segments.rest()) orelse return null; 1736 return repoDiffRoute(pair, if (ref) |r| r.kind else null, if (ref) |r| r.value else "", start, file, base_oid); 1737 } 1738 return null; // unknown sub-path 1739 } 1740 1741 pub fn eql(a: RoutablePage, b: RoutablePage) bool { 1742 if (std.meta.activeTag(a) != std.meta.activeTag(b)) return false; 1743 return switch (a) { 1744 .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()), 1745 .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()), 1746 .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, 1747 .user_new_repo => |a_name| std.mem.eql(u8, a_name.slice(), b.user_new_repo.slice()), 1748 .user_new_user => |a_name| std.mem.eql(u8, a_name.slice(), b.user_new_user.slice()), 1749 .user_auth => |a_name| std.mem.eql(u8, a_name.slice(), b.user_auth.slice()), 1750 .repo_files => |a_f| std.mem.eql(u8, a_f.name.slice(), b.repo_files.name.slice()) and 1751 a_f.ref_kind == b.repo_files.ref_kind and 1752 std.mem.eql(u8, a_f.ref_value.slice(), b.repo_files.ref_value.slice()) and 1753 std.mem.eql(u8, a_f.patchrev_id.slice(), b.repo_files.patchrev_id.slice()) and 1754 std.mem.eql(u8, a_f.find.slice(), b.repo_files.find.slice()) and 1755 std.mem.eql(u8, a_f.path.slice(), b.repo_files.path.slice()) and 1756 a_f.line == b.repo_files.line, 1757 .repo_commits => |a_c| std.mem.eql(u8, a_c.name.slice(), b.repo_commits.name.slice()) and 1758 a_c.ref_or_oid == b.repo_commits.ref_or_oid and 1759 std.mem.eql(u8, a_c.value.slice(), b.repo_commits.value.slice()) and 1760 std.mem.eql(u8, a_c.base_oid.slice(), b.repo_commits.base_oid.slice()) and 1761 std.mem.eql(u8, a_c.search.slice(), b.repo_commits.search.slice()) and 1762 std.mem.eql(u8, a_c.from.slice(), b.repo_commits.from.slice()) and 1763 std.mem.eql(u8, a_c.merge.slice(), b.repo_commits.merge.slice()) and 1764 a_c.message == b.repo_commits.message, 1765 .repo_diff => |a_d| std.mem.eql(u8, a_d.name.slice(), b.repo_diff.name.slice()) and 1766 a_d.ref_or_oid == b.repo_diff.ref_or_oid and 1767 std.mem.eql(u8, a_d.value.slice(), b.repo_diff.value.slice()) and 1768 std.mem.eql(u8, a_d.base_oid.slice(), b.repo_diff.base_oid.slice()) and 1769 std.mem.eql(u8, a_d.patchrev_id.slice(), b.repo_diff.patchrev_id.slice()) and 1770 a_d.start == b.repo_diff.start and std.mem.eql(u8, a_d.path.slice(), b.repo_diff.path.slice()), 1771 .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()), 1772 .repo_issues => |a_i| std.mem.eql(u8, a_i.name.slice(), b.repo_issues.name.slice()) and 1773 std.mem.eql(u8, a_i.label.slice(), b.repo_issues.label.slice()) and 1774 std.mem.eql(u8, a_i.search.slice(), b.repo_issues.search.slice()) and 1775 std.mem.eql(u8, a_i.selected.slice(), b.repo_issues.selected.slice()) and 1776 std.mem.eql(u8, a_i.theirs.slice(), b.repo_issues.theirs.slice()) and 1777 a_i.view == b.repo_issues.view and 1778 a_i.comments_start == b.repo_issues.comments_start and 1779 std.mem.eql(u8, a_i.comment.slice(), b.repo_issues.comment.slice()), 1780 .repo_discussions => |a_t| std.mem.eql(u8, a_t.name.slice(), b.repo_discussions.name.slice()) and 1781 std.mem.eql(u8, a_t.label.slice(), b.repo_discussions.label.slice()) and 1782 std.mem.eql(u8, a_t.search.slice(), b.repo_discussions.search.slice()) and 1783 std.mem.eql(u8, a_t.selected.slice(), b.repo_discussions.selected.slice()) and 1784 a_t.view == b.repo_discussions.view and 1785 a_t.comments_start == b.repo_discussions.comments_start and 1786 std.mem.eql(u8, a_t.comment.slice(), b.repo_discussions.comment.slice()), 1787 .repo_patches => |a_p| std.mem.eql(u8, a_p.name.slice(), b.repo_patches.name.slice()) and 1788 std.mem.eql(u8, a_p.label.slice(), b.repo_patches.label.slice()) and 1789 std.mem.eql(u8, a_p.search.slice(), b.repo_patches.search.slice()) and 1790 std.mem.eql(u8, a_p.selected.slice(), b.repo_patches.selected.slice()) and 1791 std.mem.eql(u8, a_p.theirs.slice(), b.repo_patches.theirs.slice()) and 1792 a_p.view == b.repo_patches.view and 1793 a_p.comments_start == b.repo_patches.comments_start and 1794 std.mem.eql(u8, a_p.comment.slice(), b.repo_patches.comment.slice()), 1795 .repo_undo => |a_u| std.mem.eql(u8, a_u.name.slice(), b.repo_undo.name.slice()) and 1796 a_u.index == b.repo_undo.index and 1797 a_u.clear == b.repo_undo.clear, 1798 .repo_events => |a_e| std.mem.eql(u8, a_e.name.slice(), b.repo_events.name.slice()) and 1799 a_e.view == b.repo_events.view and 1800 a_e.moment == b.repo_events.moment and 1801 a_e.kind == b.repo_events.kind and 1802 std.mem.eql(u8, a_e.selected.slice(), b.repo_events.selected.slice()), 1803 .repo_new_repo => |a_name| std.mem.eql(u8, a_name.slice(), b.repo_new_repo.slice()), 1804 .repo_new_user => |a_name| std.mem.eql(u8, a_name.slice(), b.repo_new_user.slice()), 1805 .repo_auth => |a_name| std.mem.eql(u8, a_name.slice(), b.repo_auth.slice()), 1806 .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()), 1807 .fork_diff => |a_d| std.mem.eql(u8, a_d.fork.name.slice(), b.fork_diff.fork.name.slice()) and 1808 std.mem.eql(u8, a_d.fork.id.slice(), b.fork_diff.fork.id.slice()) and 1809 std.mem.eql(u8, a_d.oid.slice(), b.fork_diff.oid.slice()) and 1810 std.mem.eql(u8, a_d.base_oid.slice(), b.fork_diff.base_oid.slice()) and 1811 a_d.start == b.fork_diff.start and std.mem.eql(u8, a_d.path.slice(), b.fork_diff.path.slice()), 1812 .fork_files => |a_f| std.mem.eql(u8, a_f.fork.name.slice(), b.fork_files.fork.name.slice()) and 1813 std.mem.eql(u8, a_f.fork.id.slice(), b.fork_files.fork.id.slice()) and 1814 std.mem.eql(u8, a_f.oid.slice(), b.fork_files.oid.slice()) and 1815 std.mem.eql(u8, a_f.find.slice(), b.fork_files.find.slice()) and 1816 std.mem.eql(u8, a_f.path.slice(), b.fork_files.path.slice()) and 1817 a_f.line == b.fork_files.line, 1818 .fork_commits => |a_c| std.mem.eql(u8, a_c.fork.name.slice(), b.fork_commits.fork.name.slice()) and 1819 std.mem.eql(u8, a_c.fork.id.slice(), b.fork_commits.fork.id.slice()) and 1820 std.mem.eql(u8, a_c.oid.slice(), b.fork_commits.oid.slice()) and 1821 a_c.message == b.fork_commits.message, 1822 .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()), 1823 .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()), 1824 .fork_auth => |a_f| std.mem.eql(u8, a_f.name.slice(), b.fork_auth.name.slice()) and std.mem.eql(u8, a_f.id.slice(), b.fork_auth.id.slice()), 1825 else => true, 1826 }; 1827 } 1828 1829 // true when following a link from `b` to `a` (both repo routes) should reload 1830 // rather than stay in page 1831 pub fn repoPageChanged(a: RoutablePage, b: RoutablePage) bool { 1832 if (a.parent() != .repo or b.parent() != .repo) return false; 1833 if (std.meta.activeTag(a) == .repo_refs and std.meta.activeTag(b) == .repo_refs and 1834 a.repo_refs.from.len == 0 and b.repo_refs.from.len == 0) 1835 return !std.mem.eql(u8, a.repo_refs.name.slice(), b.repo_refs.name.slice()); 1836 return !a.eql(b); 1837 } 1838 1839 pub fn forkPageChanged(a: RoutablePage, b: RoutablePage) bool { 1840 return a.parent() == .fork and b.parent() == .fork and !a.eql(b); 1841 } 1842 1843 // true when `a` and `b` are the same user paginated to a different repos 1844 // window or search. switching between a user's tabs is in-page, so only a 1845 // changed `start` or search on the same list navigates. 1846 pub fn userPageChanged(a: RoutablePage, b: RoutablePage) bool { 1847 return switch (a) { 1848 .user_repos => |aa| switch (b) { 1849 .user_repos => |bb| std.mem.eql(u8, aa.name.slice(), bb.name.slice()) and !a.eql(b), 1850 else => false, 1851 }, 1852 .user_forks => |aa| switch (b) { 1853 .user_forks => |bb| std.mem.eql(u8, aa.name.slice(), bb.name.slice()) and aa.start != bb.start, 1854 else => false, 1855 }, 1856 else => false, 1857 }; 1858 } 1859 1860 // true when `a` and `b` are the same home list tab paginated to a different 1861 // window or search. switching tabs is in-page, so only a changed `start` or 1862 // search on the same tab navigates. 1863 pub fn homePageChanged(a: RoutablePage, b: RoutablePage) bool { 1864 return switch (a) { 1865 .home_users => switch (b) { 1866 .home_users => !a.eql(b), 1867 else => false, 1868 }, 1869 else => false, 1870 }; 1871 } 1872 }; 1873 1874 // a `RefOrOid` resolved against an on-disk repo to the commit oid it points at 1875 fn isUnreserved(c: u8) bool { 1876 return std.ascii.isAlphanumeric(c) or c == '-' or c == '.' or c == '_' or c == '~'; 1877 } 1878 1879 // percent-encode a ref name for use as a single url path segment. 1880 pub fn urlEncodeRef(aa: std.mem.Allocator, raw: []const u8) ![]const u8 { 1881 var out: std.Io.Writer.Allocating = .init(aa); 1882 try std.Uri.Component.percentEncode(&out.writer, raw, isUnreserved); 1883 return out.written(); 1884 } 1885 1886 // a resolved ref/oid for a repo opened with `repo_kind`/`repo_opts` 1887 pub fn ResolvedRefOrOid(comptime repo_kind: rp.RepoKind, comptime repo_opts: rp.RepoOpts(repo_kind)) type { 1888 return struct { 1889 pub const hex_len = hash.hexLen(repo_opts.hash); 1890 1891 // the concrete ref/oid (a null request resolves to the default branch) 1892 ref_or_oid: RoutablePage.RefOrOid, 1893 // its branch/tag name or oid, url-encoded (ref names may contain '/', so 1894 // the route layer — which splits on '/' — stores them encoded). duped 1895 // into `aa`. 1896 value: []const u8, 1897 // the commit oid it points at 1898 oid: [hex_len]u8, 1899 1900 const Self = @This(); 1901 1902 // resolve a requested ref/oid (null = the repo's default branch) to a 1903 // concrete ref/oid plus the commit oid it points at. `requested_value` is 1904 // the url-encoded form (as it appears in the route). null when it doesn't 1905 // resolve (an unknown branch/tag, or a malformed/unknown oid). 1906 pub fn init( 1907 repo: *rp.Repo(repo_kind, repo_opts), 1908 io: std.Io, 1909 aa: std.mem.Allocator, 1910 requested_ref_or_oid: ?RoutablePage.RefOrOid, 1911 requested_value: []const u8, 1912 ) !?Self { 1913 var ref_or_oid: RoutablePage.RefOrOid = requested_ref_or_oid orelse .branch; 1914 // the decoded ref name / oid to look up. a named ref arrives url-encoded. 1915 var value: []const u8 = if (requested_ref_or_oid == null) 1916 requested_value 1917 else 1918 std.Uri.percentDecodeInPlace(try aa.dupe(u8, requested_value)); 1919 // no ref named: fall back to HEAD's branch (or its oid when detached). 1920 if (requested_ref_or_oid == null) { 1921 var head_buf: [rf.MAX_REF_CONTENT_SIZE]u8 = undefined; 1922 if (repo.head(io, &head_buf)) |head| switch (head) { 1923 .ref => |r| { 1924 ref_or_oid = .branch; 1925 value = r.name; 1926 }, 1927 .oid => |o| { 1928 ref_or_oid = .object; 1929 value = o; 1930 }, 1931 } else |_| {} 1932 } 1933 1934 var oid: [hex_len]u8 = undefined; 1935 switch (ref_or_oid) { 1936 .object => { 1937 if (value.len != hex_len) return null; 1938 @memcpy(&oid, value); 1939 }, 1940 .branch, .tag => { 1941 const ref_kind: rf.RefKind = if (ref_or_oid == .branch) .head else .tag; 1942 oid = (repo.readRef(io, .{ .kind = ref_kind, .name = value }) catch null) orelse return null; 1943 }, 1944 } 1945 // store url-encoded so the route layer can hold the value verbatim. 1946 return .{ .ref_or_oid = ref_or_oid, .value = try urlEncodeRef(aa, value), .oid = oid }; 1947 } 1948 }; 1949 } 1950 1951 // who a repo page is built for, which picks the actions it shows 1952 pub const Viewer = struct { 1953 role: evt.Repo.Role, 1954 email: []const u8, 1955 1956 // the session's viewer of a repo it holds `role` in, or null when logged 1957 // out. local mode owns everything. 1958 pub fn init(session: *Session, arena: *std.heap.ArenaAllocator, role: evt.Repo.Role) !?Viewer { 1959 if (session.data.host_kind == .local) return .{ .role = .owner, .email = "" }; 1960 const user_id = session.userId() orelse return null; 1961 const moment = session.haxy_moment orelse unreachable; 1962 const user = (try activeUser(moment, arena, user_id)) orelse return null; 1963 return .{ .role = role, .email = user.event.email }; 1964 } 1965 }; 1966 1967 // a repo a page shows, and what its viewer may do there 1968 pub const RepoHandle = struct { 1969 location: RoutablePage.RepoLocation, 1970 viewer: ?Viewer = null, 1971 1972 pub fn dupe(self: RepoHandle, allocator: std.mem.Allocator) !RepoHandle { 1973 var copy = self; 1974 copy.location = try self.location.dupe(allocator); 1975 return copy; 1976 } 1977 1978 // pushing, and seeing the events and undo tabs. local mode is always owner. 1979 pub fn canWrite(self: RepoHandle) bool { 1980 const viewer = self.viewer orelse return false; 1981 return viewer.role.atLeast(.write); 1982 } 1983 1984 pub fn canUndo(self: RepoHandle) bool { 1985 const viewer = self.viewer orelse return false; 1986 return viewer.role == .owner; 1987 } 1988 }; 1989 1990 // where a repo page reads its on-disk repo from 1991 pub const RepoSource = struct { 1992 path: []const u8, 1993 repo_kind: rp.RepoKind, 1994 // the user's global git config, so local mode picks up their identity and 1995 // their signing and ssh settings. null on the server paths, which must not 1996 // read whoever runs the server. 1997 global_config_path: ?[]const u8 = null, 1998 1999 pub fn localInitOpts(self: RepoSource) rp.InitOpts { 2000 return .{ .path = self.path, .global_config_path = self.global_config_path }; 2001 } 2002 2003 pub fn hasBranch(self: RepoSource, io: std.Io, allocator: std.mem.Allocator, branch: []const u8) !bool { 2004 if (!xit.ref.validateName(branch)) return false; 2005 return switch (self.repo_kind) { 2006 inline else => |repo_kind| blk: { 2007 var any_repo = try rp.AnyRepo(repo_kind, .{}).open(io, allocator, self.localInitOpts()); 2008 defer any_repo.deinit(io, allocator); 2009 break :blk switch (any_repo) { 2010 inline else => |*repo| (try repo.readRef(io, .{ .kind = .head, .name = branch })) != null, 2011 }; 2012 }, 2013 }; 2014 } 2015 2016 // whether the actor may change the event `id` names 2017 pub fn canModify( 2018 self: RepoSource, 2019 io: std.Io, 2020 allocator: std.mem.Allocator, 2021 actor: Actor, 2022 kind: evt.EventKind, 2023 id: *const [evt.event_id_size]u8, 2024 ) !bool { 2025 // a role that may change an event with no author needs no read 2026 if (actor.role.canModify(actor.author.email, null)) return true; 2027 2028 var arena = std.heap.ArenaAllocator.init(allocator); 2029 defer arena.deinit(); 2030 return switch (self.repo_kind) { 2031 inline else => |repo_kind| blk: { 2032 var any_repo = try rp.AnyRepo(repo_kind, .{}).open(io, allocator, self.localInitOpts()); 2033 defer any_repo.deinit(io, allocator); 2034 break :blk switch (any_repo) { 2035 inline else => |*repo| actor.role.canModify(actor.author.email, try evt.readAuthorEmail(repo_kind, repo.self_repo_opts, io, allocator, &arena, repo, kind, id)), 2036 }; 2037 }, 2038 }; 2039 } 2040 }; 2041 2042 // who a write acts as and the role they hold in its repo 2043 pub const Actor = struct { 2044 author: evt.CommitAuthor, 2045 // local mode has no accounts, so it has no user id 2046 user_id: ?[evt.event_id_size]u8 = null, 2047 role: evt.Repo.Role, 2048 // the repo owner's id, which local mode lacks 2049 repo_user_id: ?[evt.event_id_size]u8 = null, 2050 }; 2051 2052 pub const Authorization = union(enum) { 2053 actor: Actor, 2054 login_required, 2055 repo_not_found, 2056 forbidden, 2057 }; 2058 2059 // the account `user_id` names, or null once it has been removed. a user id is 2060 // checked here wherever one enters, so the role lookups can trust theirs. 2061 pub fn activeUser( 2062 moment: evt.AdminDB.HashMap(.read_only), 2063 arena: *std.heap.ArenaAllocator, 2064 user_id: [evt.event_id_size]u8, 2065 ) !?evt.User.Record { 2066 const user = (try evt.User.readById(evt.AdminDB, evt.admin_repo_opts.hash, moment, arena, &user_id)) orelse return null; 2067 return if (user.removed) null else user; 2068 } 2069 2070 // whether the user may write to the repo `identity` names with at least 2071 // `min_role` 2072 pub fn authorizeUser( 2073 io: std.Io, 2074 moment: evt.AdminDB.HashMap(.read_only), 2075 arena: *std.heap.ArenaAllocator, 2076 users_dir: []const u8, 2077 user_id: [evt.event_id_size]u8, 2078 identity: []const u8, 2079 min_role: evt.Repo.Role, 2080 ) !Authorization { 2081 const user = (try activeUser(moment, arena, user_id)) orelse return .login_required; 2082 2083 const owner_repo = evt.parseOwnerRepoPath(identity) orelse return .repo_not_found; 2084 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; 2085 const role = repo.role; 2086 // a repo the user can't read doesn't exist to them 2087 if (role == .none) return .repo_not_found; 2088 if (!role.atLeast(min_role)) return .forbidden; 2089 return .{ .actor = .{ 2090 .author = .{ .name = user.event.name, .email = user.event.email }, 2091 .user_id = user_id, 2092 .role = role, 2093 .repo_user_id = repo.repo.event.user_id[0..evt.event_id_size].*, 2094 } }; 2095 } 2096 2097 // events created in local mode have no account behind them, so the commit 2098 // author comes from the repo's config, which the global config feeds into. 2099 pub const local_author_fallback = evt.CommitAuthor{ .name = "haxy", .email = "user@haxy" }; 2100 2101 pub fn localAuthor( 2102 src: RepoSource, 2103 io: std.Io, 2104 allocator: std.mem.Allocator, 2105 arena: *std.heap.ArenaAllocator, 2106 ) !evt.CommitAuthor { 2107 switch (src.repo_kind) { 2108 inline else => |repo_kind| { 2109 var any_repo = rp.AnyRepo(repo_kind, .{}).open(io, allocator, src.localInitOpts()) catch return local_author_fallback; 2110 defer any_repo.deinit(io, allocator); 2111 2112 switch (any_repo) { 2113 inline else => |*repo| { 2114 var config = try repo.listConfig(io, allocator); 2115 defer config.deinit(); 2116 2117 const user = config.sections.get("user") orelse return local_author_fallback; 2118 const name = user.get("name") orelse return local_author_fallback; 2119 const email = user.get("email") orelse return local_author_fallback; 2120 return .{ 2121 .name = try arena.allocator().dupe(u8, name), 2122 .email = try arena.allocator().dupe(u8, email), 2123 }; 2124 }, 2125 } 2126 }, 2127 } 2128 } 2129 2130 // per-connection mutable state. each SSH session / web session / local TUI 2131 // run gets its own. 2132 pub const Session = struct { 2133 data: Data = .{}, 2134 // session-lifetime allocations: login/user_id, persisted prefs, queued 2135 // actions. lives as long as the connection. 2136 arena: *std.heap.ArenaAllocator, 2137 // current page's allocations: page data and the page-scoped strings widgets 2138 // build (form actions, links). owned by Nav, swapped on each navigation, so 2139 // it doesn't accumulate over a long-lived session. on the web/wasm paths, 2140 // where a render is one-shot, this points at the same arena as `arena`. 2141 page_arena: *std.heap.ArenaAllocator, 2142 haxy_moment: ?evt.AdminDB.HashMap(.read_only) = null, // db cursor (null on the wasm side) 2143 // filesystem io and the path to <server>/repos, for opening on-disk repos 2144 // during page construction. both null on wasm, which has no filesystem and 2145 // rebuilds pages from the serialized snapshot rather than from disk. 2146 io: ?std.Io = null, 2147 admin_repo: ?*rp.Repo(.xit, evt.admin_repo_opts) = null, 2148 users_dir: ?[]const u8 = null, 2149 // the single on-disk repo this session views, when running in local mode 2150 // (haxy invoked with no arguments inside a repo). null on the server paths, 2151 // which resolve repos from the admin db instead. 2152 local: ?RepoSource = null, 2153 // focus id -> the live TextInput, refreshed each frame by the views that own 2154 // inputs. web/wasm form handling looks widgets up here by focus id. 2155 text_inputs: std.AutoHashMapUnmanaged(usize, *wgt.TextInput) = .empty, 2156 back: enum { unavailable, available, requested } = .unavailable, 2157 refresh_requested: bool = false, // set by input (ctrl+r) 2158 // a requested forward navigation. set this (via navigate) to move to a new 2159 // page; Nav.sync builds it and then copies it into current_page, clearing 2160 // this back to null. setting current_page directly only updates the url and 2161 // does not navigate. 2162 next_page: ?RoutablePage = null, 2163 is_terminal: bool = false, // true on remote SSH and local TUI 2164 // the terminal's reported default background, which the art blends toward 2165 terminal_background: ?Grid.Color.Rgb = null, 2166 // port the web UI is served on, for the TUI/SSH footer's "http://localhost:<port>..." 2167 // url. null on the web itself (no footer there). 2168 web_port: ?u16 = null, 2169 // a host operation requested by a widget 2170 host_request: ?HostRequest = null, 2171 quit_requested: bool = false, 2172 2173 pub const HostRequest = union(enum) { 2174 show_copyable_text: []const u8, 2175 sync_events, 2176 undo: RoutablePage.RepoUndoRoute, 2177 }; 2178 2179 pub const FormFeedback = union(enum) { 2180 pub const LoginFailure = enum { unknown_user, wrong_password }; 2181 pub const ThreadFailure = enum { required_title }; 2182 pub const PatchFailure = enum { 2183 required_title, 2184 invalid_target_branch, 2185 invalid_source_branch, 2186 same_branch, 2187 unrelated_branches, 2188 2189 pub fn fromError(err: anyerror) ?PatchFailure { 2190 return switch (err) { 2191 error.InvalidTargetBranch => .invalid_target_branch, 2192 error.InvalidSourceBranch => .invalid_source_branch, 2193 error.SameBranch => .same_branch, 2194 error.UnrelatedBranches => .unrelated_branches, 2195 else => null, 2196 }; 2197 } 2198 }; 2199 2200 pub const RepoFailure = enum { 2201 required_name, 2202 invalid_name, 2203 name_taken, 2204 2205 pub fn fromError(err: anyerror) ?RepoFailure { 2206 return switch (err) { 2207 error.NameEmpty => .required_name, 2208 error.NameTooLong, error.InvalidName => .invalid_name, 2209 error.NameTaken => .name_taken, 2210 else => null, 2211 }; 2212 } 2213 }; 2214 2215 pub const UserFailure = enum { 2216 required_name, 2217 invalid_name, 2218 name_taken, 2219 required_email, 2220 email_taken, 2221 required_password, 2222 password_mismatch, 2223 2224 pub fn fromError(err: anyerror) ?UserFailure { 2225 return switch (err) { 2226 error.NameEmpty => .required_name, 2227 error.NameTooShort, error.NameTooLong, error.InvalidName => .invalid_name, 2228 error.NameTaken => .name_taken, 2229 error.EmailEmpty => .required_email, 2230 error.EmailTaken => .email_taken, 2231 error.PasswordEmpty => .required_password, 2232 error.PasswordMismatch => .password_mismatch, 2233 else => null, 2234 }; 2235 } 2236 }; 2237 2238 login: struct { 2239 failure: LoginFailure, 2240 username: []const u8, 2241 }, 2242 user: struct { 2243 failure: UserFailure, 2244 // passwords are never retained 2245 fields: struct { 2246 name: []const u8, 2247 email: []const u8, 2248 }, 2249 }, 2250 repo: struct { 2251 failure: RepoFailure, 2252 fields: struct { 2253 name: []const u8, 2254 description: []const u8, 2255 hash: hash.HashKind, 2256 access: evt.Repo.Access, 2257 }, 2258 }, 2259 issue: struct { 2260 failure: ThreadFailure, 2261 fields: ?struct { 2262 title: []const u8, 2263 labels: []const u8, 2264 description: []const u8, 2265 } = null, 2266 }, 2267 patch: struct { 2268 failure: PatchFailure, 2269 fields: ?struct { 2270 title: []const u8, 2271 labels: []const u8, 2272 description: []const u8, 2273 target_branch: []const u8, 2274 source_branch: []const u8 = "", 2275 source_kind: Repo.Patches.Source.Kind = .fork, 2276 } = null, 2277 }, 2278 discussion: struct { 2279 failure: ThreadFailure, 2280 fields: ?struct { 2281 title: []const u8, 2282 labels: []const u8, 2283 description: []const u8, 2284 } = null, 2285 }, 2286 }; 2287 2288 const Self = @This(); 2289 2290 // serializable data sent down to web client 2291 pub const Data = struct { 2292 user_id: ?[]const u8 = null, 2293 // the logged-in user's name, for the views that show it 2294 user_name: ?[]const u8 = null, 2295 // a failed form retained long enough to render it for correction 2296 form_feedback: ?FormFeedback = null, 2297 // a transient local event-sync error 2298 sync_failure: ?[]const u8 = null, 2299 // a failed terminal undo retained on the current tab 2300 undo_failure: ?[]const u8 = null, 2301 current_page: RoutablePage = .default, 2302 // the selected ANSI art. the server serializes one image for WASM so 2303 // the browser does not need the whole build-generated collection. 2304 ansi_art: []const u8 = "", 2305 // the bound git-service ports. absent in local mode, where remote urls 2306 // are not shown. 2307 git_http_port: ?u16 = null, 2308 git_ssh_port: ?u16 = null, 2309 git_ssh_prefix: []const u8 = "", 2310 // whether this session views a local repo or the server. unlike `local` 2311 // (the host-side filesystem source) this travels in the snapshot, so 2312 // the wasm side also parses elided link urls and hides the multi-user 2313 // chrome. 2314 host_kind: evt.HostKind = .server, 2315 }; 2316 2317 pub fn init( 2318 arena: *std.heap.ArenaAllocator, 2319 repo: *rp.Repo(.xit, evt.admin_repo_opts), 2320 data: Data, 2321 ) !Self { 2322 var session = Self{ 2323 .data = data, 2324 .arena = arena, 2325 // until a host swaps in a page-scoped arena (Nav does this), page 2326 // allocations land in the session arena. on the web path that's the 2327 // intended behavior, since the whole arena is per-request. 2328 .page_arena = arena, 2329 .admin_repo = repo, 2330 .haxy_moment = try evt.currentMoment(evt.admin_repo_opts, repo), 2331 }; 2332 try session.loadUser(); 2333 return session; 2334 } 2335 2336 // load the logged-in user's name and persisted preferences from the db 2337 pub fn loadUser(self: *Self) !void { 2338 const user_id = self.userId() orelse return; 2339 const moment = self.haxy_moment orelse return; 2340 const user = (try activeUser(moment, self.arena, user_id)) orelse return self.logOut(); 2341 self.data.user_name = user.event.name; 2342 } 2343 2344 // forget the logged-in user, on a logout or once their account is removed 2345 pub fn logOut(self: *Self) void { 2346 self.data.user_id = null; 2347 self.data.user_name = null; 2348 } 2349 2350 pub fn userId(self: *const Self) ?[evt.event_id_size]u8 { 2351 const bytes = self.data.user_id orelse return null; 2352 if (bytes.len != evt.event_id_size) return null; 2353 var id: [evt.event_id_size]u8 = undefined; 2354 @memcpy(&id, bytes); 2355 return id; 2356 } 2357 2358 pub fn formFeedback(self: *const Self, comptime tag: std.meta.Tag(FormFeedback)) ?@FieldType(FormFeedback, @tagName(tag)) { 2359 const feedback = self.data.form_feedback orelse return null; 2360 if (std.meta.activeTag(feedback) != tag) return null; 2361 return @field(feedback, @tagName(tag)); 2362 } 2363 2364 pub fn clearFormFeedback(self: *Self) void { 2365 self.data.form_feedback = null; 2366 } 2367 2368 // the actor for a write to the repo `identity` names, or null when the 2369 // session may not write there with at least `min_role`. local mode always 2370 // writes. 2371 pub fn authorize(self: *Self, identity: []const u8, min_role: evt.Repo.Role) !?Actor { 2372 if (self.data.host_kind == .local) { 2373 const author = blk: { 2374 const src = self.local orelse break :blk local_author_fallback; 2375 const io = self.io orelse break :blk local_author_fallback; 2376 break :blk try localAuthor(src, io, self.page_arena.child_allocator, self.page_arena); 2377 }; 2378 return .{ .author = author, .role = .owner }; 2379 } 2380 const user_id = self.userId() orelse return null; 2381 // the session's moment predates this input, so read the roles afresh 2382 const admin_repo = self.admin_repo orelse return null; 2383 const io = self.io orelse return null; 2384 const users_dir = self.users_dir orelse return null; 2385 const moment = try evt.currentMoment(evt.admin_repo_opts, admin_repo); 2386 return switch (try authorizeUser(io, moment, self.page_arena, users_dir, user_id, identity, min_role)) { 2387 .actor => |actor| actor, 2388 .login_required, .repo_not_found, .forbidden => null, 2389 }; 2390 } 2391 2392 // where this session's event writes go. a server session always has a users dir 2393 pub fn eventHost(self: *const Self) evt.Host { 2394 return switch (self.data.host_kind) { 2395 .local => .local, 2396 .server => .{ .server = .{ .users_dir = self.users_dir orelse unreachable } }, 2397 }; 2398 } 2399 2400 // reload the moment from the admin repo and log out a removed user 2401 pub fn reloadMoment(self: *Self, allocator: std.mem.Allocator, repo: *rp.Repo(.xit, evt.admin_repo_opts)) !void { 2402 const moment = try evt.currentMoment(evt.admin_repo_opts, repo); 2403 self.haxy_moment = moment; 2404 2405 const user_id = self.userId() orelse return; 2406 var arena = std.heap.ArenaAllocator.init(allocator); 2407 defer arena.deinit(); 2408 if (try activeUser(moment, &arena, user_id) == null) self.logOut(); 2409 } 2410 2411 // request a forward navigation to `route`; the host consumes next_page 2412 // (Nav.sync on the terminal, the wasm tick on the web). 2413 pub fn navigate(self: *Session, route: RoutablePage) !void { 2414 self.clearFormFeedback(); 2415 self.next_page = route; 2416 } 2417 }; 2418 2419 pub fn run(io: std.Io, allocator: std.mem.Allocator, session: *Session, repo_maybe: ?*rp.Repo(.xit, evt.admin_repo_opts)) !void { 2420 var nav = try Nav.init(allocator, session); 2421 defer nav.deinit(allocator); 2422 2423 var terminal = try term.Terminal.init(io, allocator); 2424 var terminal_live = true; 2425 defer if (terminal_live) terminal.deinit(io); 2426 2427 // set term as active so it will be properly cooked 2428 // when a panic/segfault happens 2429 term.setActive(&terminal); 2430 defer term.setActive(null); 2431 2432 try terminal.queryBackground(); 2433 2434 while (!terminal.shouldQuit()) { 2435 const grid_changed = try terminal.render(&nav.root); 2436 2437 // process any inputs. 2438 // 2439 // if the grid didn't change, then first do a blocking 2440 // read, so the thread will sleep until further input. 2441 // after that, all remaining reads are non-blocking so 2442 // we can process the rest of the queued inputs. 2443 // 2444 // if the grid *did* change, then only do non-blocking 2445 // reads. we do not want to sleep the thread because 2446 // there may be an animation that requires more looping. 2447 var blocking = !grid_changed; 2448 while (try terminal.readKey(io, blocking)) |key| { 2449 blocking = false; 2450 try inputKey(allocator, &nav.root, key, session); 2451 } 2452 2453 if (session.host_request) |request| { 2454 session.host_request = null; 2455 switch (request) { 2456 .show_copyable_text => |copyable_text| { 2457 term.setActive(null); 2458 terminal.deinit(io); 2459 terminal_live = false; 2460 showCopyableText(io, copyable_text) catch |show_err| { 2461 terminal = try term.Terminal.init(io, allocator); 2462 terminal_live = true; 2463 term.setActive(&terminal); 2464 return show_err; 2465 }; 2466 terminal = try term.Terminal.init(io, allocator); 2467 terminal_live = true; 2468 term.setActive(&terminal); 2469 }, 2470 .undo => |target| Repo.Undo.handleRequest(allocator, session, target), 2471 .sync_events => { 2472 try nav.root.build(allocator, .{ 2473 .min_size = .{ .width = null, .height = null }, 2474 .max_size = .{ .width = terminal.size.width, .height = terminal.size.height }, 2475 }, nav.root.getFocus()); 2476 _ = try terminal.render(&nav.root); 2477 try Repo.Events.performSync(allocator, session); 2478 }, 2479 } 2480 } 2481 2482 // reload so the next navigation builds its page from the current moment 2483 if (repo_maybe) |repo| try session.reloadMoment(allocator, repo); 2484 2485 // reconcile navigation: forward to a new page, or back on escape. 2486 // the terminal background can change at any time, so recheck it on each page 2487 if (try nav.sync(allocator, session)) try terminal.queryBackground(); 2488 2489 // the quit button (on the quit tab) asks the host to tear down. 2490 if (session.quit_requested) terminal.requestQuit(); 2491 2492 try nav.root.build(allocator, .{ 2493 .min_size = .{ .width = null, .height = null }, 2494 .max_size = .{ .width = terminal.size.width, .height = terminal.size.height }, 2495 }, nav.root.getFocus()); 2496 } 2497 } 2498 2499 fn showCopyableText(io: std.Io, copyable_text: []const u8) !void { 2500 const tty: ?std.Io.File = if (builtin.os.tag == .windows) 2501 null 2502 else 2503 try std.Io.Dir.cwd().openFile(io, "/dev/tty", .{ .mode = .read_write }); 2504 defer if (tty) |file| file.close(io); 2505 2506 const input = if (tty) |file| file else std.Io.File.stdin(); 2507 const output = if (tty) |file| file else std.Io.File.stdout(); 2508 2509 var write_buf: [1024]u8 = undefined; 2510 var writer = output.writer(io, &write_buf); 2511 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}); 2512 try writer.interface.flush(); 2513 2514 var read_buf: [1]u8 = undefined; 2515 var reader = input.reader(io, &read_buf); 2516 while (true) { 2517 const byte = try reader.interface.takeByte(); 2518 if (byte == '\r' or byte == '\n') return; 2519 } 2520 } 2521 2522 pub fn inputKey(allocator: std.mem.Allocator, root: *Widget, key: Key, session: *Session) !void { 2523 const root_focus = root.getFocus(); 2524 const focused_before = root_focus.grandchild_id; 2525 var activate_in_page_link = false; 2526 switch (key) { 2527 // request a navigation pop; the host's Nav.sync goes back a page, or 2528 // quits when there's no history left. 2529 .escape => { 2530 session.back = .requested; 2531 return; 2532 }, 2533 .ctrl => |letter| switch (letter) { 2534 'r' => { 2535 session.refresh_requested = true; 2536 return; 2537 }, 2538 else => try root.input(allocator, key, root_focus), 2539 }, 2540 .enter => { 2541 if (root_focus.grandchild_id) |gid| { 2542 // follow a cross-page link 2543 if (crossPageLink(root_focus, gid, session.data)) |route| { 2544 return session.navigate(route); 2545 } 2546 if (rawLink(root_focus, gid)) |url| return requestRawLink(session, url); 2547 } 2548 activate_in_page_link = true; 2549 try root.input(allocator, key, root_focus); 2550 }, 2551 .mouse => |mouse| { 2552 if (mouse.action == .press and mouse.action.press == .left) { 2553 if (root_focus.hitTest(mouse.x, mouse.y)) |hit| { 2554 const focus_id = hit.id; 2555 if (hit.kind == .background) { 2556 root_focus.setFocus(focus_id); 2557 return; 2558 } 2559 if (widget.isBackButton((root_focus.children.get(focus_id) orelse return).focus)) { 2560 if (session.back == .available) session.back = .requested; 2561 return; 2562 } 2563 // follow a cross-page link 2564 if (crossPageLink(root_focus, focus_id, session.data)) |route| { 2565 return session.navigate(route); 2566 } 2567 if (rawLink(root_focus, focus_id)) |url| { 2568 if (!mouse.ctrl) try requestRawLink(session, url); 2569 return; 2570 } 2571 root_focus.setFocus(focus_id); 2572 activate_in_page_link = true; 2573 } 2574 // forward the press into the widget tree so buttons (and any 2575 // future click-aware widgets) can react. widgets that don't 2576 // care about presses ignore it. 2577 try root.input(allocator, key, root_focus); 2578 } else { 2579 try root.input(allocator, key, root_focus); 2580 } 2581 }, 2582 .event => |event| switch (event) { 2583 .background => |rgb| session.terminal_background = rgb, 2584 .resize => try root.input(allocator, key, root_focus), 2585 }, 2586 else => try root.input(allocator, key, root_focus), 2587 } 2588 2589 const focused_after = root_focus.grandchild_id; 2590 if (!activate_in_page_link and focused_before == focused_after) return; 2591 const focus_id = focused_after orelse return; 2592 if (inPageLink(root_focus, focus_id, session.data)) |route| session.data.current_page = route; 2593 } 2594 2595 // a link to bytes the server serves directly rather than to a page route, so 2596 // it never resolves to a RoutablePage 2597 pub const raw_link_prefix = "ax:"; 2598 2599 // a route already loaded into the current page; focusing it changes the url 2600 // without rebuilding the page 2601 pub const in_page_link_prefix = "ai:"; 2602 2603 // an in-page tab's base route, or the exact current route when it is selected 2604 pub fn inPageTabLink(session: *Session, route: RoutablePage, selected: bool) ![]const u8 { 2605 const target = if (selected) session.data.current_page else route; 2606 return std.fmt.allocPrint(session.page_arena.allocator(), "{s}{s}", .{ in_page_link_prefix, try target.toUrl(session.page_arena) }); 2607 } 2608 2609 // a button the web renderer covers with a file picker that posts the chosen 2610 // file to the url after the prefix 2611 pub const file_input_prefix = "file:"; 2612 2613 // a submit button that overrides its enclosing form's action 2614 pub const submit_action_prefix = "submit:"; 2615 2616 // one option of a radio field, as `radio:<name>=<value>` 2617 pub const radio_prefix = "radio:"; 2618 2619 // the url an `ax:` link points at, or null for anything else. a host that 2620 // suppresses the anchor's own navigation needs this to follow the link. 2621 pub fn rawLink(root_focus: *Focus, focus_id: usize) ?[]const u8 { 2622 const child = root_focus.children.get(focus_id) orelse return null; 2623 const custom = switch (child.focus.kind) { 2624 .custom => |c| c, 2625 else => return null, 2626 }; 2627 if (!std.mem.startsWith(u8, custom, raw_link_prefix)) return null; 2628 return custom[raw_link_prefix.len..]; 2629 } 2630 2631 fn requestRawLink(session: *Session, url: []const u8) !void { 2632 session.host_request = .{ .show_copyable_text = try terminalWebUrl(session.page_arena.allocator(), session, url) }; 2633 } 2634 2635 pub fn terminalWebUrl(allocator: std.mem.Allocator, session: *const Session, path: []const u8) ![]const u8 { 2636 // an absolute url is already complete 2637 if (!std.mem.startsWith(u8, path, "/")) return path; 2638 return if (session.web_port) |port| 2639 try std.fmt.allocPrint(allocator, "http://localhost:{d}{s}", .{ port, path }) 2640 else 2641 path; 2642 } 2643 2644 // if the focus target at focus_id is an `a:` link that should navigate (a 2645 // different parent page, or a different files directory within the repo page), 2646 // return its route; otherwise null. lets a host turn a click / enter on such a 2647 // link into a navigation rather than a focus change. 2648 pub fn crossPageLink(root_focus: *Focus, focus_id: usize, data: Session.Data) ?RoutablePage { 2649 const current = data.current_page; 2650 const route = pageLink(root_focus, focus_id, data, "a:") orelse return null; 2651 // a link to a different parent page always navigates; within a page, a 2652 // files-directory / commits-page / list-window change navigates while tab 2653 // links stay in-page. 2654 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; 2655 return null; 2656 } 2657 2658 // the route carried by an `ai:` focus target, or null for any other target 2659 pub fn inPageLink(root_focus: *Focus, focus_id: usize, data: Session.Data) ?RoutablePage { 2660 return pageLink(root_focus, focus_id, data, in_page_link_prefix); 2661 } 2662 2663 fn pageLink(root_focus: *Focus, focus_id: usize, data: Session.Data, prefix: []const u8) ?RoutablePage { 2664 const child = root_focus.children.get(focus_id) orelse return null; 2665 const custom = switch (child.focus.kind) { 2666 .custom => |c| c, 2667 else => return null, 2668 }; 2669 if (!std.mem.startsWith(u8, custom, prefix)) return null; 2670 const path = custom[prefix.len..]; 2671 // local sessions build (and parse) links with the repo identity elided 2672 return if (data.host_kind == .local) RoutablePage.fromUrlLocal(path) else RoutablePage.fromUrl(path); 2673 } 2674 2675 // a display author, resolved against the admin db at read time 2676 pub const Author = union(enum) { 2677 unknown, 2678 email: []const u8, // an email no user matches 2679 user_name: []const u8, 2680 2681 // the commit author line's email, resolved like initFromEmail 2682 pub fn init( 2683 haxy_moment: ?evt.AdminDB.HashMap(.read_only), 2684 arena: *std.heap.ArenaAllocator, 2685 author_line: []const u8, 2686 ) !Author { 2687 return initFromEmail(haxy_moment, arena, evt.authorEmail(author_line)); 2688 } 2689 2690 // from a record's stored author email: it resolves to the user currently 2691 // holding it, else stays the email. the result is allocated in `arena`, 2692 // so the email may borrow transient memory. 2693 pub fn initFromEmail( 2694 haxy_moment: ?evt.AdminDB.HashMap(.read_only), 2695 arena: *std.heap.ArenaAllocator, 2696 author_email: ?[]const u8, 2697 ) !Author { 2698 const email = author_email orelse return .unknown; 2699 if (haxy_moment) |moment| { 2700 if (try evt.User.readByEmail(evt.AdminDB, evt.admin_repo_opts.hash, moment, arena, email)) |user| { 2701 return .{ .user_name = user.name }; 2702 } 2703 } 2704 return .{ .email = try arena.allocator().dupe(u8, email) }; 2705 } 2706 }; 2707 2708 // the "a:" link to user `name`'s page. 2709 pub fn userLink(page_arena: *std.heap.ArenaAllocator, name: []const u8) ![]const u8 { 2710 const parsed = RoutablePage.Array(evt.User.name_max_len).from(name) orelse return error.RouteTooLong; 2711 const url = try (RoutablePage{ .user_repos = .{ .name = parsed } }).toUrl(page_arena); 2712 return std.fmt.allocPrint(page_arena.allocator(), "a:{s}", .{url}); 2713 } 2714 2715 // a focusable " author " box showing `author`, linking to their user page 2716 // when it is a known user 2717 pub fn authorBox(allocator: std.mem.Allocator, page_arena: *std.heap.ArenaAllocator, author: Author) !wgt.TextBox { 2718 const text = switch (author) { 2719 .unknown => "", 2720 .email, .user_name => |t| t, 2721 }; 2722 var tb = try wgt.TextBox.init(allocator, text, .{ .border_style = .single, .round_corners = true, .wrap_kind = .none, .label = " author " }); 2723 errdefer tb.deinit(allocator); 2724 tb.getFocus().mode = .all; 2725 switch (author) { 2726 .user_name => |name| tb.getFocus().kind = .{ .custom = try userLink(page_arena, name) }, 2727 else => {}, 2728 } 2729 return tb; 2730 } 2731 2732 // native-TUI navigation 2733 pub const Nav = struct { 2734 root: Widget, 2735 // backs the current page (its Page data and the page-scoped strings its 2736 // widgets build). owned here, swapped on each navigation. session.page_arena 2737 // tracks whichever of these is current so widgets allocate into it. 2738 arena: *std.heap.ArenaAllocator, 2739 // the login the current root was built for 2740 user_id: ?[evt.event_id_size]u8, 2741 history: std.ArrayList(Entry), 2742 2743 // each retained page keeps its own arena, freed when the page leaves the 2744 // stack (popped on back, evicted at cap, or on deinit). this is what keeps a 2745 // long-lived session from accumulating every page it ever visited. 2746 const Entry = struct { root: Widget, route: RoutablePage, arena: *std.heap.ArenaAllocator, user_id: ?[evt.event_id_size]u8 }; 2747 2748 // cap on retained back-history so the chain can't grow memory without bound 2749 const max_history: usize = 16; 2750 2751 pub fn init(allocator: std.mem.Allocator, session: *Session) !Nav { 2752 session.back = .unavailable; 2753 const arena = try allocator.create(std.heap.ArenaAllocator); 2754 arena.* = std.heap.ArenaAllocator.init(allocator); 2755 errdefer { 2756 arena.deinit(); 2757 allocator.destroy(arena); 2758 } 2759 2760 return .{ 2761 .root = try initCurrentRoot(allocator, arena, session), 2762 .arena = arena, 2763 .user_id = session.userId(), 2764 .history = .empty, 2765 }; 2766 } 2767 2768 pub fn deinit(self: *Nav, allocator: std.mem.Allocator) void { 2769 self.root.deinit(allocator); 2770 freeArena(allocator, self.arena); 2771 for (self.history.items) |*entry| { 2772 entry.root.deinit(allocator); 2773 freeArena(allocator, entry.arena); 2774 } 2775 self.history.deinit(allocator); 2776 } 2777 2778 // rebuild the current page in place from a current moment 2779 fn rebuild(self: *Nav, allocator: std.mem.Allocator, session: *Session) !void { 2780 if (session.haxy_moment == null and session.local == null) return; 2781 const arena = try allocator.create(std.heap.ArenaAllocator); 2782 arena.* = std.heap.ArenaAllocator.init(allocator); 2783 errdefer freeArena(allocator, arena); 2784 2785 const new_root = try initCurrentRoot(allocator, arena, session); 2786 2787 self.root.deinit(allocator); 2788 freeArena(allocator, self.arena); 2789 self.root = new_root; 2790 self.arena = arena; 2791 self.user_id = session.userId(); 2792 } 2793 2794 // build the current page's root in `arena`, or the not-found page's when 2795 // the route names nothing 2796 fn initCurrentRoot(allocator: std.mem.Allocator, arena: *std.heap.ArenaAllocator, session: *Session) !Widget { 2797 session.page_arena = arena; 2798 const page = try arena.allocator().create(Page); 2799 page.* = Page.init(arena, session, session.data.current_page) catch |err| switch (err) { 2800 error.NotFound => blk: { 2801 session.data.current_page = .not_found; 2802 break :blk .not_found; 2803 }, 2804 else => |e| return e, 2805 }; 2806 return initRoot(allocator, page, session); 2807 } 2808 2809 fn freeArena(allocator: std.mem.Allocator, arena: *std.heap.ArenaAllocator) void { 2810 arena.deinit(); 2811 allocator.destroy(arena); 2812 } 2813 2814 // reconcile the displayed root with the session's navigation state. a 2815 // forward nav (current_page moved to a different parent page) pushes the 2816 // current root and builds the new page in a fresh arena; a back request 2817 // frees the current page and restores the previous one. when escape is 2818 // pressed with no history left we switch to the quit tab instead of quitting. 2819 // returns whether the root was replaced. 2820 pub fn sync(self: *Nav, allocator: std.mem.Allocator, session: *Session) !bool { 2821 // refresh: rebuild the current page in place from a current moment 2822 if (session.refresh_requested) { 2823 session.refresh_requested = false; 2824 try self.rebuild(allocator, session); 2825 return true; 2826 } 2827 2828 if (session.back == .requested) { 2829 if (self.history.pop()) |entry| { 2830 session.back = if (self.history.items.len == 0) .unavailable else .available; 2831 self.root.deinit(allocator); 2832 freeArena(allocator, self.arena); 2833 self.root = entry.root; 2834 self.arena = entry.arena; 2835 self.user_id = entry.user_id; 2836 session.page_arena = entry.arena; 2837 session.data.current_page = entry.route; 2838 // a page built under another login is rebuilt rather than restored 2839 if (!std.meta.eql(entry.user_id, session.userId())) { 2840 try self.rebuild(allocator, session); 2841 return true; 2842 } 2843 chooseAnsiArtForNavigation(session); 2844 return true; 2845 } 2846 session.back = .unavailable; 2847 // nothing to go back to; switch to the quit confirmation 2848 const root_focus = self.root.getFocus(); 2849 var iter = root_focus.children.iterator(); 2850 while (iter.next()) |entry| { 2851 switch (entry.value_ptr.focus.kind) { 2852 .custom => |custom| if (std.mem.eql(u8, custom, Quit.tab_kind)) { 2853 root_focus.setFocus(entry.key_ptr.*); 2854 // a Stack only builds its selected child, so the quit 2855 // button isn't in the focus tree until a build runs with 2856 // the quit tab selected. build once, then send a 2857 // synthetic arrow_down to drop focus from the tab onto 2858 // the button so it's ready to confirm. 2859 try self.root.build(allocator, .{ 2860 .min_size = .{ .width = null, .height = 40 }, 2861 .max_size = .{ .width = 80, .height = null }, 2862 }, root_focus); 2863 try self.root.input(allocator, .arrow_down, root_focus); 2864 break; 2865 }, 2866 else => {}, 2867 } 2868 } 2869 return false; 2870 } 2871 2872 // forward navigation: navigate() set next_page to the page to move to (a 2873 // cross-page link or tab change crossing pages) 2874 if (session.next_page) |route| { 2875 session.next_page = null; 2876 if (session.haxy_moment == null and session.local == null) return false; 2877 const previous_route = session.data.current_page; 2878 // the page we navigated to becomes the current page 2879 session.data.current_page = route; 2880 session.back = .available; 2881 2882 const arena = try allocator.create(std.heap.ArenaAllocator); 2883 arena.* = std.heap.ArenaAllocator.init(allocator); 2884 errdefer freeArena(allocator, arena); 2885 2886 const new_root = try initCurrentRoot(allocator, arena, session); 2887 2888 try self.history.append(allocator, .{ .root = self.root, .route = previous_route, .arena = self.arena, .user_id = self.user_id }); 2889 // drop the oldest entry (freeing its widget tree and arena) once over cap 2890 if (self.history.items.len > max_history) { 2891 var oldest = self.history.orderedRemove(0); 2892 oldest.root.deinit(allocator); 2893 freeArena(allocator, oldest.arena); 2894 } 2895 self.root = new_root; 2896 self.arena = arena; 2897 self.user_id = session.userId(); 2898 return true; 2899 } 2900 return false; 2901 } 2902 }; 2903 2904 pub fn initRoot(allocator: std.mem.Allocator, page: *const Page, session: *Session) !Widget { 2905 const page_widget: Widget = switch (page.*) { 2906 .home => |*p| .{ .home = try .init(allocator, p, session) }, 2907 .user => |*p| .{ .user = try .init(allocator, p, session) }, 2908 .repo => |*p| .{ .repo = try .init(allocator, p, session) }, 2909 .fork => |*p| .{ .fork = try .init(allocator, p, session) }, 2910 .not_found => .{ .not_found = try .init(allocator, session) }, 2911 }; 2912 2913 chooseAnsiArtForNavigation(session); 2914 2915 // on the TUI/SSH, the page sits above a one-row footer showing its web 2916 // url, when there's a web UI to point at 2917 var root = if (session.is_terminal) blk: { 2918 var box = try wgt.Box(Widget).init(allocator, .{ .border_style = null, .direction = .vert }); 2919 errdefer box.deinit(allocator); 2920 const bg_id = bg_blk: { 2921 var background = try widget.AnsiBackground.init(allocator, page_widget, session); 2922 errdefer background.deinit(allocator); 2923 const id = background.getFocus().id; 2924 try box.children.put(allocator, id, .{ .widget = .{ .background = background }, .rect = null, .min_size = null }); 2925 break :bg_blk id; 2926 }; 2927 if (session.web_port != null) { 2928 var footer = try widget.Footer.init(allocator, session); 2929 errdefer footer.deinit(allocator); 2930 try box.children.put(allocator, footer.getFocus().id, .{ .widget = .{ .footer = footer }, .rect = null, .min_size = .{ .width = null, .height = 1 } }); 2931 } 2932 box.getFocus().child_id = bg_id; 2933 break :blk Widget{ .box = box }; 2934 } else Widget{ .background = try widget.AnsiBackground.init(allocator, page_widget, session) }; 2935 errdefer root.deinit(allocator); 2936 2937 // input-owning views build their TextInputs in init, so reset their 2938 // registrations here 2939 session.text_inputs.clearRetainingCapacity(); 2940 2941 try root.build(allocator, .{ 2942 .min_size = .{ .width = null, .height = 40 }, 2943 .max_size = .{ .width = 100, .height = null }, 2944 }, root.getFocus()); 2945 2946 return root; 2947 } 2948 2949 // native and server-side sessions choose from the embedded collection. WASM 2950 // keeps the art serialized by the server instead. 2951 fn chooseAnsiArtForNavigation(session: *Session) void { 2952 if (comptime ansi_art.art.len == 0) return; 2953 if (session.data.current_page == .not_found) { 2954 session.data.ansi_art = ansi_art.not_found; 2955 return; 2956 } 2957 const io = session.io orelse return; 2958 var random: usize = undefined; 2959 io.random(std.mem.asBytes(&random)); 2960 session.data.ansi_art = ansi_art.art[random % ansi_art.art.len]; 2961 } 2962