/**
 * Pack prebuilt web UI + server into packages/dsh-plugin/bundle
 * so `dsh plugin add github:…#path:packages/dsh-plugin` works without monorepo.
 */
import { execSync } from "node:child_process";
import {
  cpSync,
  existsSync,
  mkdirSync,
  rmSync,
  writeFileSync,
} from "node:fs";
import { dirname, join } from "node:path";
import { fileURLToPath } from "node:url";
import * as esbuild from "esbuild";

const pluginRoot = dirname(dirname(fileURLToPath(import.meta.url)));
const repoRoot = join(pluginRoot, "../..");
const bundleRoot = join(pluginRoot, "bundle");
const webOut = join(bundleRoot, "web");
const serverOut = join(bundleRoot, "server.mjs");

function run(cmd, cwd = repoRoot) {
  console.log(`[pack] ${cmd}`);
  execSync(cmd, { cwd, stdio: "inherit", env: process.env, windowsHide: true });
}

// 1) Build workspace libs + web
run("pnpm --filter @mind-map/shared build");
run("pnpm --filter @mind-map/graph-core build");
run("pnpm --filter @mind-map/graph-store build");
run("pnpm --filter @mind-map/layout-engine build");
// dream-skin ships TS+JSON; esbuild resolves it without a separate tsc emit
run("pnpm --filter @mind-map/web build");

const webDist = join(repoRoot, "apps/web/dist");
if (!existsSync(join(webDist, "index.html"))) {
  throw new Error("apps/web/dist/index.html missing after build");
}

// 2) Fresh bundle dir
rmSync(bundleRoot, { recursive: true, force: true });
mkdirSync(webOut, { recursive: true });
cpSync(webDist, webOut, { recursive: true });

// 3) Bundle server (workspace + npm deps inlined; node builtins stay external)
console.log("[pack] esbuild apps/server → bundle/server.mjs");
await esbuild.build({
  entryPoints: [join(repoRoot, "apps/server/src/index.ts")],
  bundle: true,
  platform: "node",
  format: "esm",
  outfile: serverOut,
  packages: "bundle",
  banner: {
    js: "import { createRequire as __mmCr } from 'node:module'; const require = __mmCr(import.meta.url);",
  },
  logLevel: "info",
});

if (!existsSync(serverOut)) {
  throw new Error("bundle/server.mjs was not produced");
}

writeFileSync(
  join(bundleRoot, "README.txt"),
  "Prebuilt assets for remote dsh plugin install. Regenerated by: node packages/dsh-plugin/scripts/pack-bundle.mjs\n",
  "utf8",
);

console.log("[pack] OK →", bundleRoot);