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<script lang="ts">
  import type { InvokeMessage, SurfaceSpec } from "@dispatch/ui-contract";
  import { groupRenderFields, planSurface } from "../logic/plan";
  import Button from "./Button.svelte";
  import MessageQueueList from "./MessageQueueList.svelte";
  import Number from "./Number.svelte";
  import Progress from "./Progress.svelte";
  import Selector from "./Selector.svelte";
  import StatTable from "./StatTable.svelte";
  import SurfaceTable from "./SurfaceTable.svelte";
  import TodoList from "./TodoList.svelte";
  import Toggle from "./Toggle.svelte";

  let {
    spec,
    onInvoke,
    onCancelQueuedMessage,
  }: {
    spec: SurfaceSpec;
    onInvoke: (msg: InvokeMessage) => void;
    /**
     * Cancel a queued message by id — threaded ONLY to the `message-queue`
     * renderer. Optional + scoped: generic surfaces (which pass nothing) keep
     * rendering a read-only queue list. Kept as a typed callback (never a
     * stringly-typed bus); the renderer dispatch is on `rendererId` (a renderer
     * KIND), never the surface id.
     */
    onCancelQueuedMessage?: (messageId: string) => void;
  } = $props();

  const plan = $derived(planSurface(spec));
  // Consecutive stats render together as one aligned table; everything else is
  // a standalone widget. Grouping keys on field KIND only — never the surface id.
  const groups = $derived(groupRenderFields(plan.fields));
</script>

<article>
  <h2>{spec.title}</h2>
  {#each groups as group, i (i)}
    {#if group.type === "stats"}
      <StatTable stats={group.stats} />
    {:else if group.field.kind === "toggle"}
      <Toggle field={group.field} surfaceId={spec.id} {onInvoke} />
    {:else if group.field.kind === "progress"}
      <Progress field={group.field} />
    {:else if group.field.kind === "selector"}
      <Selector field={group.field} surfaceId={spec.id} {onInvoke} />
    {:else if group.field.kind === "number"}
      <Number field={group.field} surfaceId={spec.id} {onInvoke} />
    {:else if group.field.kind === "button"}
      <Button field={group.field} surfaceId={spec.id} {onInvoke} />
    {:else if group.field.kind === "custom"}
      <!-- Dispatch on rendererId (a renderer KIND, never a surface id);
           unknown ids gracefully render nothing. -->
      {#if group.field.rendererId === "table"}
        <SurfaceTable payload={group.field.payload} />
      {:else if group.field.rendererId === "message-queue"}
        <MessageQueueList payload={group.field.payload} onCancel={onCancelQueuedMessage} />
      {:else if group.field.rendererId === "todo"}
        <TodoList payload={group.field.payload} />
      {/if}
    {/if}
  {/each}
</article>