// opencode v2 TUI plugin: one key toggles the "verbose view".
//
// v2 dropped the v1 tool-details / timestamps / generic-output toggles. The session view now has two
// display toggles that matter: thinking blocks (session.thinking show|hide) and exploration grouping
// (session.grouping auto|none — "auto" folds read/glob/grep tool calls into one collapsed group).
// Verbose = thinking expanded AND tool calls shown individually. Both settings persist in the TUI config.
//
// State is read from the built-in commands' live titles (the only plugin-visible signal):
//   session.toggle.thinking              → "Collapse thinking" while expanded, else "Expand thinking"
//   session.toggle.exploration_grouping  → "Show tool calls individually" while grouped, else "Group related tool calls"
// then only the toggles that differ from the target are dispatched, so a mixed state converges.
//
// Auto-discovered from ~/.config/opencode/plugins/verbose/ (server.ts + this file). Key configurable
// via plugin options; default <leader>v. Also /verbose and a command-palette entry.
const THINKING = "session.toggle.thinking"
const GROUPING = "session.toggle.exploration_grouping"

type Command = { readonly id?: string; readonly title?: string }
type Context = {
  readonly options?: Readonly<Record<string, unknown>>
  readonly keymap: {
    layer(input: () => { readonly commands?: readonly unknown[] }): void
    dispatch(id: string, input?: string): void
    commands(): readonly Command[]
  }
  readonly ui: { readonly toast: { show(o: { message: string; variant?: string; duration?: number }): void } }
}

export default {
  id: "coja.verbose",
  setup(context: Context) {
    const key = typeof context.options?.key === "string" && context.options.key ? (context.options.key as string) : "<leader>v"
    const title = (id: string) => context.keymap.commands().find((c) => c.id === id)?.title ?? ""

    context.keymap.layer(() => ({
      commands: [
        {
          id: "verbose.toggle",
          title: "Toggle verbose view (expand thinking, ungroup tool calls)",
          group: "Session",
          bind: key,
          palette: true,
          slash: { name: "verbose" },
          run() {
            const thinkingTitle = title(THINKING)
            const groupingTitle = title(GROUPING)
            if (!thinkingTitle && !groupingTitle) {
              context.ui.toast.show({ message: "Verbose view: open a session first", variant: "warning", duration: 2000 })
              return
            }
            const thinkingVerbose = thinkingTitle.startsWith("Collapse")
            const groupingVerbose = groupingTitle.startsWith("Group")
            const on = !(thinkingVerbose && groupingVerbose)
            if (thinkingTitle && thinkingVerbose !== on) context.keymap.dispatch(THINKING)
            if (groupingTitle && groupingVerbose !== on) context.keymap.dispatch(GROUPING)
            context.ui.toast.show({ message: on ? "Verbose view on" : "Verbose view off", variant: "info", duration: 1500 })
          },
        },
      ],
    }))
  },
}