import { spawn } from 'node:child_process';
import {
  chmod,
  copyFile,
  mkdir,
  rm,
  writeFile,
} from 'node:fs/promises';
import path from 'node:path';
import { fileURLToPath } from 'node:url';

const root = path.resolve(path.dirname(fileURLToPath(import.meta.url)), '..');
const runtimeRoot = path.join(root, '.runtime', 'deep-search');
const esbuildBin = path.join(root, 'node_modules', '.bin', 'esbuild');
const runtimeNodeTarget = process.env.DEEP_SEARCH_RUNTIME_NODE_TARGET || 'node24';

function run(command, args) {
  return new Promise((resolve, reject) => {
    const child = spawn(command, args, {
      cwd: root,
      stdio: 'inherit',
      env: process.env,
    });
    child.once('error', reject);
    child.once('exit', (code, signal) => {
      if (code === 0) return resolve();
      reject(new Error(`${command} exited with ${code ?? signal}`));
    });
  });
}

await rm(runtimeRoot, { recursive: true, force: true });
await mkdir(path.join(runtimeRoot, 'scripts'), { recursive: true });

await run(esbuildBin, [
  'deep-search-server.mjs',
  '--bundle',
  '--platform=node',
  '--format=esm',
  `--target=${runtimeNodeTarget}`,
  '--outfile=.runtime/deep-search/deep-search-server.mjs',
  '--banner:js=import { createRequire as __createRequire } from "node:module"; const require = __createRequire(import.meta.url);',
]);

for (const script of [
  'run-deep-search-prod.sh',
  'install-deep-search-runtime-prod.sh',
]) {
  const source = path.join(root, 'scripts', script);
  const target = path.join(runtimeRoot, 'scripts', script);
  await copyFile(source, target);
  await chmod(target, 0o755);
}

await writeFile(
  path.join(runtimeRoot, 'RUNBOOK.txt'),
  [
    'TKMind Deep Search standalone runtime',
    '',
    'Production base: /Users/john/Project/deep-search-runtime',
    'Persistent env:  shared/.env',
    'Persistent data: data/research.sqlite',
    'Release code:    releases/<release-id>/',
    'Active release:  current -> releases/<release-id>/',
    'LaunchAgent:     cn.tkmind.memind-deep-search',
    'Health:          http://127.0.0.1:20100/health',
    'SearXNG:         http://127.0.0.1:20080/search',
    '',
    'The GitHub token stays in shared/.env and is never passed to goosed MCP processes.',
    'Portal and memindadm releases are intentionally separate.',
    '',
  ].join('\n'),
);

console.log(`Deep Search runtime built at ${runtimeRoot}`);