// esbuild build for @hive/dashboard. Output layout (`dist/`):
//
//   dist/index.html               served by the Rust router at GET /
//   dist/flow.html                served at GET /flow.html
//   dist/static/app.js            /index.html entry — tab renderers +
//                                  tab routing + refreshState
//   dist/static/flow.js           /flow.html entry — broker terminal +
//                                  operator inbox + @-mention composer
//   dist/static/{app,flow}.js.map source map siblings
//   dist/static/dashboard.css     served at /static/dashboard.css
//                                  (@import resolved from @hive/shared)
//
// Both JS entries inline `./common.js` (DOM helpers, Panel singleton,
// NOTIF, path linkification) — esbuild dedupes the shared module
// between bundles. The Rust binary mounts `dist/` as a
// `tower_http::ServeDir` fallback; the layout above keeps every URL
// the HTML files reference reachable without rewriting paths in the
// HTML.

import { build } from 'esbuild';
import { mkdirSync, copyFileSync, rmSync } from 'node:fs';
import { dirname, resolve } from 'node:path';
import { fileURLToPath } from 'node:url';

const here = dirname(fileURLToPath(import.meta.url));
const src = (p) => resolve(here, 'src', p);
const dist = (p) => resolve(here, 'dist', p);
const staticDir = (p) => resolve(here, 'dist', 'static', p);

rmSync(dist(''), { recursive: true, force: true });
mkdirSync(staticDir(''), { recursive: true });

// Bundle both JS entries. ES-module output, browser target, no minify
// (line-aligned source aids debugging; minification belongs in a later
// follow-up once asset sizes warrant it). esbuild writes each entry
// to `static/<name>.js` based on the entryPoint basename.
await build({
  entryPoints: [src('app.js'), src('flow.js')],
  outdir: staticDir(''),
  bundle: true,
  format: 'esm',
  platform: 'browser',
  target: ['es2022'],
  sourcemap: true,
  logLevel: 'info',
});

// Stream-worker entry (#448). Lives in a separate bundle: SharedWorker
// scripts run in a different global (`self` is the worker scope, no
// `window`) so they can't be inlined into app.js / flow.js. Output is
// at `static/stream-worker.js`; common.js's `openStream` references
// `/static/stream-worker.js` as the SharedWorker URL. `format: 'iife'`
// matches the classic-script load (`new SharedWorker(url, name)` with
// no `{ type: 'module' }`); Firefox is the #448 target and module
// SharedWorker support there is patchy, so keeping the worker as a
// classic script + IIFE bundle is the compatible default. argus nit
// on #453: if a future contributor adds an `import` to this bundle,
// the IIFE format will surface it as a build error rather than
// silently shipping broken code.
await build({
  entryPoints: [src('stream-worker.js')],
  outdir: staticDir(''),
  bundle: true,
  format: 'iife',
  platform: 'browser',
  target: ['es2022'],
  sourcemap: true,
  logLevel: 'info',
});

// Bundle the CSS — esbuild resolves @import including the package
// re-exports from @hive/shared.
await build({
  entryPoints: [src('dashboard.css')],
  outfile: staticDir('dashboard.css'),
  bundle: true,
  loader: { '.css': 'css' },
  logLevel: 'info',
});

for (const html of ['index.html', 'flow.html']) {
  copyFileSync(src(html), dist(html));
}

console.log('dashboard build ok →', dist(''));