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import { renderUiView } from "@/client/server/render";
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import type { Viewer } from "@/client/server/viewer";
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const HTML_HEADERS = {
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  "Content-Type": "text/html; charset=utf-8",
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  "X-Page-Renderer": "react-ssr",
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};
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type RenderUiDocumentOptions = {
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  status?: number;
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  cacheControl?: string;
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  failureBody: string;
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  failureStatus?: number;
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  headers?: HeadersInit;
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  // Optional signed-in viewer threaded into the SSR shell. Route handlers
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  // that want the signed-in header must call `loadViewer(c)` and pass the
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  // result here. The renderer itself never reads cookies or D1.
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  viewer?: Viewer | null;
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};
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/**
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 * Renders a registered React SSR document with the headers used by route pages.
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 * Callers still choose the cache policy because owner listings are cacheable
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 * while repository views intentionally remain no-store.
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 */
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export async function renderUiDocumentResponse(
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  env: Env,
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  view: string,
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  data: Record<string, unknown>,
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  options: RenderUiDocumentOptions
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): Promise<Response> {
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  const body = await renderUiView(env, view, data, { viewer: options.viewer ?? null });
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  if (!body) {
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    return new Response(options.failureBody, { status: options.failureStatus ?? 500 });
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  }
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  const headers = new Headers(options.headers);
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  for (const [name, value] of Object.entries(HTML_HEADERS)) {
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    if (!headers.has(name)) headers.set(name, value);
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  }
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  if (!headers.has("Cache-Control")) {
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    headers.set("Cache-Control", options.cacheControl ?? "no-store, no-cache, must-revalidate");
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  }
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  return new Response(body, {
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    status: options.status ?? 200,
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    headers,
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  });
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}