import { For, Show, createEffect, createMemo, createSignal, on, onCleanup } from "solid-js"
import type { QuestionRequest, Todo } from "@opencode-ai/sdk/v2"
import { Button } from "@opencode-ai/ui/button"
import { BasicTool } from "@opencode-ai/ui/basic-tool"
import { PromptInput } from "@/components/prompt-input"
import { QuestionDock } from "@/components/question-dock"
import { SessionTodoDock } from "@/components/session-todo-dock"

export function SessionPromptDock(props: {
  centered: boolean
  questionRequest: () => QuestionRequest | undefined
  permissionRequest: () => { patterns: string[]; permission: string } | undefined
  blocked: boolean
  todos: Todo[]
  promptReady: boolean
  handoffPrompt?: string
  t: (key: string, vars?: Record<string, string | number | boolean>) => string
  responding: boolean
  onDecide: (response: "once" | "always" | "reject") => void
  inputRef: (el: HTMLDivElement) => void
  newSessionWorktree: string
  onNewSessionWorktreeReset: () => void
  onSubmit: () => void
  setPromptDockRef: (el: HTMLDivElement) => void
}) {
  const done = createMemo(
    () =>
      props.todos.length > 0 && props.todos.every((todo) => todo.status === "completed" || todo.status === "cancelled"),
  )

  const [dock, setDock] = createSignal(props.todos.length > 0)
  const [closing, setClosing] = createSignal(false)
  const [opening, setOpening] = createSignal(false)
  let timer: number | undefined
  let raf: number | undefined

  const scheduleClose = () => {
    if (timer) window.clearTimeout(timer)
    timer = window.setTimeout(() => {
      setDock(false)
      setClosing(false)
      timer = undefined
    }, 400)
  }

  createEffect(
    on(
      () => [props.todos.length, done()] as const,
      ([count, complete], prev) => {
        if (raf) cancelAnimationFrame(raf)
        raf = undefined

        if (count === 0) {
          if (timer) window.clearTimeout(timer)
          timer = undefined
          setDock(false)
          setClosing(false)
          setOpening(false)
          return
        }

        if (!complete) {
          if (timer) window.clearTimeout(timer)
          timer = undefined
          const wasHidden = !dock() || closing()
          setDock(true)
          setClosing(false)
          if (wasHidden) {
            setOpening(true)
            raf = requestAnimationFrame(() => {
              setOpening(false)
              raf = undefined
            })
            return
          }
          setOpening(false)
          return
        }

        if (prev && prev[1]) {
          if (closing() && !timer) scheduleClose()
          return
        }

        setDock(true)
        setOpening(false)
        setClosing(true)
        scheduleClose()
      },
    ),
  )

  onCleanup(() => {
    if (!timer) return
    window.clearTimeout(timer)
  })

  onCleanup(() => {
    if (!raf) return
    cancelAnimationFrame(raf)
  })

  return (
    <div
      ref={props.setPromptDockRef}
      data-component="session-prompt-dock"
      class="shrink-0 w-full pb-4 flex flex-col justify-center items-center bg-background-stronger pointer-events-none"
    >
      <div
        classList={{
          "w-full px-4 pointer-events-auto": true,
          "md:max-w-200 md:mx-auto 2xl:max-w-[1000px]": props.centered,
        }}
      >
        <Show when={props.questionRequest()} keyed>
          {(req) => {
            return (
              <div>
                <QuestionDock request={req} />
              </div>
            )
          }}
        </Show>

        <Show when={props.permissionRequest()} keyed>
          {(perm) => (
            <div data-component="tool-part-wrapper" data-permission="true" class="mb-3">
              <BasicTool
                icon="checklist"
                locked
                defaultOpen
                trigger={{
                  title: props.t("notification.permission.title"),
                  subtitle:
                    perm.permission === "doom_loop"
                      ? props.t("settings.permissions.tool.doom_loop.title")
                      : perm.permission,
                }}
              >
                <Show when={perm.patterns.length > 0}>
                  <div class="flex flex-col gap-1 py-2 px-3 max-h-40 overflow-y-auto no-scrollbar">
                    <For each={perm.patterns}>
                      {(pattern) => <code class="text-12-regular text-text-base break-all">{pattern}</code>}
                    </For>
                  </div>
                </Show>
                <Show when={perm.permission === "doom_loop"}>
                  <div class="text-12-regular text-text-weak pb-2 px-3">
                    {props.t("settings.permissions.tool.doom_loop.description")}
                  </div>
                </Show>
              </BasicTool>
              <div data-component="permission-prompt">
                <div data-slot="permission-actions">
                  <Button
                    variant="ghost"
                    size="small"
                    onClick={() => props.onDecide("reject")}
                    disabled={props.responding}
                  >
                    {props.t("ui.permission.deny")}
                  </Button>
                  <Button
                    variant="secondary"
                    size="small"
                    onClick={() => props.onDecide("always")}
                    disabled={props.responding}
                  >
                    {props.t("ui.permission.allowAlways")}
                  </Button>
                  <Button
                    variant="primary"
                    size="small"
                    onClick={() => props.onDecide("once")}
                    disabled={props.responding}
                  >
                    {props.t("ui.permission.allowOnce")}
                  </Button>
                </div>
              </div>
            </div>
          )}
        </Show>

        <Show when={!props.blocked}>
          <Show
            when={props.promptReady}
            fallback={
              <div class="w-full min-h-32 md:min-h-40 rounded-md border border-border-weak-base bg-background-base/50 px-4 py-3 text-text-weak whitespace-pre-wrap pointer-events-none">
                {props.handoffPrompt || props.t("prompt.loading")}
              </div>
            }
          >
            <Show when={dock()}>
              <div
                classList={{
                  "transition-[max-height,opacity,transform] duration-[400ms] ease-out overflow-hidden": true,
                  "max-h-[320px]": !closing(),
                  "max-h-0 pointer-events-none": closing(),
                  "opacity-0 translate-y-9": closing() || opening(),
                  "opacity-100 translate-y-0": !closing() && !opening(),
                }}
              >
                <SessionTodoDock
                  todos={props.todos}
                  title={props.t("session.todo.title")}
                  collapseLabel={props.t("session.todo.collapse")}
                  expandLabel={props.t("session.todo.expand")}
                />
              </div>
            </Show>
            <div
              classList={{
                "relative z-10": true,
                "transition-[margin] duration-[400ms] ease-out": true,
                "-mt-9": dock() && !closing(),
                "mt-0": !dock() || closing(),
              }}
            >
              <PromptInput
                ref={props.inputRef}
                newSessionWorktree={props.newSessionWorktree}
                onNewSessionWorktreeReset={props.onNewSessionWorktreeReset}
                onSubmit={props.onSubmit}
              />
            </div>
          </Show>
        </Show>
      </div>
    </div>
  )
}