const baseUrl = process.env.GITEA_PREVIEW_URL ?? "http://localhost:3000";

async function waitFor(url: string) {
  const deadline = Date.now() + 60_000;
  let lastError: unknown;

  while (Date.now() < deadline) {
    try {
      const response = await fetch(url);
      if (response.ok) {
        return response;
      }

      lastError = new Error(`${url} returned ${response.status}`);
    } catch (error) {
      lastError = error;
    }

    await Bun.sleep(1000);
  }

  throw lastError;
}

const home = await waitFor(baseUrl);
const html = await home.text();
const lightTheme = await waitFor(`${baseUrl}/assets/css/theme-github-dev.css`);
const darkTheme = await waitFor(`${baseUrl}/assets/css/theme-github-dev-dark.css`);

if (!html.includes("/assets/css/theme-github-dev-dark.css")) {
  throw new Error("Gitea page is not loading the custom theme-github-dev-dark.css file");
}

const lightCss = await lightTheme.text();
const darkCss = await darkTheme.text();

if (!lightCss.includes("--color-primary: #0969da")) {
  throw new Error("light theme css is reachable but does not contain migrated GitHub tokens");
}

if (!darkCss.includes("--color-body: #0d1117")) {
  throw new Error("dark theme css is reachable but does not contain GitHub dark tokens");
}

if (!darkCss.includes(".ui.primary.button")) {
  throw new Error("dark theme css is reachable but does not contain migrated GitHub component styles");
}

console.log(`docker preview verified: ${home.status} ${baseUrl}`);