import { EmbeddableChat } from 'officerdev';

/**
 * A chat, sitting under the two lists.
 *
 * ── Why this exists instead of naming `officerdev/chat` in the layout ──
 *
 * It was tried, and it produced two Hosts panels. `PluginScreen` renders the workspace with
 * `appTypes={{ allowed, fallback: allowed[0] }}` where `allowed` is **this plugin's own panel keys**, so a
 * layout naming anything else silently falls back to the first one. That is deliberate and its comment
 * says why: a persisted layout must not be able to render another plugin's panel inside this screen.
 *
 * The registry being shared is a separate thing from the layout being allowed to name what is in it. Both
 * are true; only the second one decides this.
 *
 * So the panel is ours and the chat inside it is the platform's. `EmbeddableChat` is exported from
 * `officerdev` for precisely this — the whole composer, transcript, queue and model picker, with no second
 * implementation to fall behind the first.
 *
 * ── The prefix ──
 *
 * `promptPrefix` is described in `ChatPanelWrapper` as "a system prompt only this app understands". It is
 * per-panel rather than per-session-wide, so it costs nothing to anybody else's conversation.
 *
 * Kept to two sentences on purpose. The Proxy Manager SKILL carries the real knowledge and reaches every
 * conversation on the machine at a cost of two lines; this only says where the agent is standing, which is
 * the one thing the skill cannot know. Anything longer would be the skill written twice, and the copy here
 * would be the stale one.
 */
const PREFIX = [
  'This chat is a panel on the Proxy Manager screen, beside a list of this machine’s proxy hosts and a list',
  'of its TLS certificates. Questions about domains, forwarding, whether a site is up, or when a certificate',
  'expires are about THIS machine — read the Proxy Manager skill before answering one.',
].join(' ');

/**
 * The wrapper is not decoration. `EmbeddableChat` is handed `flex-1 min-h-0`, which needs a flex COLUMN
 * with a real height above it — without one the composer floats mid-panel and the transcript overflows
 * below the fold, which is exactly what shipping it bare produced. `ChatPanelWrapper` has the same div for
 * the same reason.
 */
export const ChatPanel = ({ panelId }: { panelId: string }) => (
  <div className="flex h-full min-h-0 flex-col">
    <EmbeddableChat className="min-h-0 flex-1" panelId={panelId} promptPrefix={PREFIX} />
  </div>
);