/**
 * Post-build pre-renderer for sase.tr public pages.
 *
 * Starts a local vite preview server, visits each public route with
 * headless Chromium, and saves the fully-rendered HTML to dist/.
 * Crawlers that don't execute JavaScript receive complete HTML.
 *
 * Usage: node scripts/prerender.mjs
 * Requires: dist/ to already exist (run `vite build` first)
 */

import { chromium } from "playwright";
import { preview } from "vite";
import { writeFileSync, mkdirSync, existsSync } from "fs";
import { join, dirname } from "path";
import { fileURLToPath } from "url";

const __dirname = dirname(fileURLToPath(import.meta.url));
const ROOT = join(__dirname, "..");
const DIST = join(ROOT, "dist");
const PORT = 4174;

/** Public routes to pre-render. Dashboard/auth routes are excluded — they require login. */
const ROUTES = [
  "/",
  "/pricing",
  "/about",
  "/blog",
  "/blog/vin-nedir-nasil-okunur",
  "/blog/orijinal-mi-muadil-mi",
  "/blog/dijital-donusum",
  "/blog/dogru-parcayi-bulun",
  "/contact",
  "/demo",
];

async function prerender() {
  if (!existsSync(DIST)) {
    console.error("❌  dist/ not found — run `vite build` first.");
    process.exit(1);
  }

  console.log("🔍  Starting pre-render...\n");

  // Start vite preview server (serves from dist/)
  const server = await preview({
    root: ROOT,
    preview: { port: PORT, strictPort: false },
    logLevel: "silent",
  });

  const browser = await chromium.launch({ args: ["--no-sandbox"] });

  try {
    for (const route of ROUTES) {
      const page = await browser.newPage();

      // Block all /api/ requests so auth resolves to unauthenticated immediately.
      // Without this the page hangs waiting for session checks.
      await page.route("**/api/**", (r) =>
        r.fulfill({
          status: 401,
          contentType: "application/json",
          body: JSON.stringify({ success: false, error: { code: "UNAUTHORIZED" } }),
        }),
      );

      await page.goto(`http://localhost:${PORT}${route}`, {
        waitUntil: "networkidle",
        timeout: 30_000,
      });

      // Extra settle time for any deferred renders (animations, etc.)
      await page.waitForTimeout(300);

      const html = await page.content();

      if (route === "/") {
        writeFileSync(join(DIST, "index.html"), html, "utf-8");
      } else {
        const dir = join(DIST, route);
        mkdirSync(dir, { recursive: true });
        writeFileSync(join(dir, "index.html"), html, "utf-8");
      }

      await page.close();
      console.log(`  ✓  ${route}`);
    }
  } finally {
    await browser.close();
    await server.close();
  }

  console.log("\n✅  Pre-render complete — all routes saved to dist/\n");
}

prerender().catch((err) => {
  console.error("❌  Pre-render failed:", err.message);
  process.exit(1);
});