import fs from "node:fs";
import path from "node:path";
import url from "node:url";

import puppeteer from "puppeteer-core";

const here = path.dirname(url.fileURLToPath(import.meta.url));
const siteRoot = path.resolve(here, "..");
const origin = process.env.DESIGNPACA_PREVIEW_ORIGIN || "http://localhost:4321";
const chromeCandidates = [
  process.env.CHROME_PATH,
  "C:/Program Files/Google/Chrome/Application/chrome.exe",
  "C:/Program Files (x86)/Google/Chrome/Application/chrome.exe",
  "/usr/bin/google-chrome",
  "/usr/bin/chromium",
];
const executablePath = chromeCandidates.find((candidate) => candidate && fs.existsSync(candidate));

if (!executablePath) {
  throw new Error("Chrome/Chromium executable not found. Set CHROME_PATH before capturing site OG images.");
}

const captures = [
  { path: "/", output: "src/assets/og-designpaca-ko.png" },
  { path: "/en/", output: "src/assets/og-designpaca-en.png" },
];

const browser = await puppeteer.launch({
  executablePath,
  headless: true,
  args: ["--force-color-profile=srgb", "--no-first-run", "--no-default-browser-check"],
});

try {
  const page = await browser.newPage();
  await page.setViewport({ width: 1200, height: 630, deviceScaleFactor: 1 });
  await page.emulateMediaFeatures([{ name: "prefers-reduced-motion", value: "reduce" }]);

  for (const capture of captures) {
    const target = new URL(capture.path, origin).href;
    const response = await page.goto(target, { waitUntil: "networkidle0", timeout: 30_000 });
    if (!response?.ok()) throw new Error(`Failed to load ${target}: ${response?.status() ?? "no response"}`);
    await page.evaluate(() => document.fonts.ready);
    await page.screenshot({
      path: path.join(siteRoot, capture.output),
      type: "png",
      captureBeyondViewport: false,
    });
    console.log(`${capture.output} · 1200x630`);
  }
} finally {
  await browser.close();
}