// Scans src/app for public static pages and writes src/lib/sitemap-config.generated.json.
// Runs on `prebuild`; served by GET /meshkee/sitemap-config.json.
import { readdirSync, statSync, writeFileSync } from "node:fs";
import { join, relative, sep } from "node:path";
import { fileURLToPath } from "node:url";

const root = fileURLToPath(new URL("..", import.meta.url));
const appDir = join(root, "src", "app");
const domain = process.env.NEXT_PUBLIC_WEBSITE_DOMAIN || "homgroup.com";

const EXCLUDE = /^(api|meshkee|login|register|cart|checkout|account|admin)(\/|$)/;
const PRIORITY = {
  "/": 1.0,
  "/projects": 0.8,
  "/services": 0.8,
  "/about": 0.6,
  "/contact": 0.5,
};

function walk(dir, out = []) {
  for (const entry of readdirSync(dir)) {
    const full = join(dir, entry);
    if (statSync(full).isDirectory()) walk(full, out);
    else if (entry === "page.tsx" || entry === "page.ts") out.push(full);
  }
  return out;
}

const staticPages = walk(appDir)
  .map((file) => relative(appDir, file).split(sep).slice(0, -1).join("/"))
  .filter((route) => !route.includes("[") && !EXCLUDE.test(route))
  .map((route) => `/${route}`.replace(/\/+/g, "/"))
  .sort((a, b) => (a === "/" ? -1 : b === "/" ? 1 : a.localeCompare(b)))
  .map((path) => ({
    path,
    ...(path === "/" ? { changefreq: "weekly" } : {}),
    priority: PRIORITY[path] ?? 0.5,
  }));

const config = { baseUrl: `https://${domain}`, staticPages };
writeFileSync(join(root, "src", "lib", "sitemap-config.generated.json"), `${JSON.stringify(config, null, 2)}\n`);
console.log(`sitemap-config: ${staticPages.map((page) => page.path).join(", ")}`);