import fs from "fs";
import { globby } from "globby";
import prettier from "prettier";
import path from "path";

async function generate() {
  const prettierConfig = await prettier.resolveConfig("./.prettierrc");

  // Ensure directories exist
  fs.mkdirSync("public", { recursive: true });
  fs.mkdirSync("out", { recursive: true });

  // Get static pages
  const pages = await globby([
    "app/**/page.tsx",
    "!app/**/_*/**",
    "!app/**/api/**",
    "!app/docs/**", // Exclude docs directory as we'll handle it separately
  ]);

  // Get doc pages from the build output
  const docPages = await globby(["out/docs/**/*.html"]).then((pages) =>
    pages
      .map((page) =>
        page.replace("out", "").replace("/index.html", "").replace(".html", ""),
      )
      .filter((page) => !page.includes("/_")),
  );

  // Get blog pages from the build output
  const blogPages = await globby(["out/blog/**/*.html"]).then((pages) =>
    pages
      .map((page) =>
        page.replace("out", "").replace("/index.html", "").replace(".html", ""),
      )
      .filter((page) => !page.includes("/_") && !page.includes("/blog/index")),
  );

  const baseUrl = "https://amical.ai";

  const sitemap = `
    <?xml version="1.0" encoding="UTF-8"?>
    <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
      ${[
        // Add static pages
        ...pages.map((page) => {
          const path = page
            .replace("app", "")
            .replace("/page.tsx", "")
            .replace("/(home)", "")
            .replace(/\[\[\.\.\..*?\]\]/, "");

          // Skip dynamic routes with parameters
          if (path.includes("[") || path.includes("]")) {
            return "";
          }

          const route = path === "" ? "" : path;

          return `
            <url>
              <loc>${baseUrl}${route}</loc>
              <lastmod>${new Date().toISOString()}</lastmod>
              <changefreq>daily</changefreq>
              <priority>0.7</priority>
            </url>
          `;
        }),
        // Add docs index page
        `
          <url>
            <loc>${baseUrl}/docs</loc>
            <lastmod>${new Date().toISOString()}</lastmod>
            <changefreq>daily</changefreq>
            <priority>0.7</priority>
          </url>
        `,
        // Add doc pages
        ...docPages.map(
          (path) => `
          <url>
            <loc>${baseUrl}${path}</loc>
            <lastmod>${new Date().toISOString()}</lastmod>
            <changefreq>daily</changefreq>
            <priority>0.7</priority>
          </url>
        `,
        ),
        // Add blog index page
        `
          <url>
            <loc>${baseUrl}/blog</loc>
            <lastmod>${new Date().toISOString()}</lastmod>
            <changefreq>weekly</changefreq>
            <priority>0.8</priority>
          </url>
        `,
        // Add blog pages
        ...blogPages.map(
          (path) => `
          <url>
            <loc>${baseUrl}${path}</loc>
            <lastmod>${new Date().toISOString()}</lastmod>
            <changefreq>weekly</changefreq>
            <priority>0.7</priority>
          </url>
        `,
        ),
      ]
        .filter(Boolean)
        .join("")}
    </urlset>
  `;

  const formatted = await prettier.format(sitemap, {
    ...prettierConfig,
    parser: "html",
  });

  fs.writeFileSync("public/sitemap.xml", formatted);
  fs.writeFileSync("out/sitemap.xml", formatted);

  console.log("✅ Generated sitemap.xml");
}

generate().catch((err) => {
  console.error(err);
  process.exit(1);
});