#!/usr/bin/env node
/**
 * Build JS bundles: one self-contained file per entry point.
 *
 * Each bundle includes all its dependencies inline (no code splitting).
 * Output: app/public/assets/dist/{admin,public,form,partage}.min.js
 */

import { rolldown } from "rolldown";
import { resolve, dirname } from "node:path";
import { fileURLToPath } from "node:url";
import { writeFileSync, mkdirSync } from "node:fs";

const __dirname = dirname(fileURLToPath(import.meta.url));
const root = resolve(__dirname, "..");
const jsDir = resolve(root, "app/public/assets/js/app");
const distDir = resolve(root, "app/public/assets/dist");

mkdirSync(distDir, { recursive: true });

const entries = {
  admin: resolve(jsDir, "admin-entry.js"),
  public: resolve(jsDir, "public-entry.js"),
  form: resolve(jsDir, "form-entry.js"),
  partage: resolve(jsDir, "partage-entry.js"),
};

async function buildEntry(name, input) {
  const bundle = await rolldown({
    input,
    resolve: { extensions: [".js"] },
    output: {
      format: "esm",
      minify: true,
    },
  });

  const { output } = await bundle.generate();
  // output is an array of OutputChunks; we want the entry chunk
  const entryChunk = output.find((c) => c.isEntry);
  if (!entryChunk) {
    console.error(`  ✗ ${name}.min.js — no entry chunk`);
    return;
  }

  const outPath = resolve(distDir, `${name}.min.js`);
  writeFileSync(outPath, entryChunk.code);

  const size = Buffer.byteLength(entryChunk.code, "utf8");
  console.log(`  ✓ ${name}.min.js (${size.toLocaleString()} bytes)`);
}

async function main() {
  console.log("📦 Building JS bundles…\n");
  for (const [name, input] of Object.entries(entries)) {
    await buildEntry(name, input);
  }
  console.log("\n✅ JS bundles done\n");
}

main().catch((err) => {
  console.error("❌ JS build failed:", err);
  process.exit(1);
});