import { execSync } from 'child_process';
import { readFileSync } from 'fs';
import { resolve, dirname } from 'path';
import { fileURLToPath } from 'url';
import process from 'process';

const __dirname = dirname(fileURLToPath(import.meta.url));
const ROOT = resolve(__dirname, '..');

// colors
const G = (s) => `\x1b[0;32m${s}\x1b[0m`;
const Y = (s) => `\x1b[1;33m${s}\x1b[0m`;
const R = (s) => `\x1b[0;31m${s}\x1b[0m`;

const log = (msg) => console.log(`${G('[OK]')}  ${msg}`);
const warn = (msg) => console.warn(`${Y('[WARN]')} ${msg}`);
const err = (msg) => { console.error(`${R('[ERR]')} ${msg}`); process.exit(1); };

const cmd = (...args) => execSync(args.join(' '), { cwd: ROOT, stdio: 'inherit' });

const exists = (c) => {
  try { execSync(`which ${c}`, { stdio: 'pipe' }); return true; } catch { return false; }
};

// ── 1. Rust ──
if (exists('rustc')) {
  log(`Rust ${execSync('rustc --version', { encoding: 'utf8' }).trim()}`);
} else {
  warn('Rust not found, installing via rustup...');
  execSync('curl --proto "=https" --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y', { stdio: 'inherit' });
}

// ── 2. Node.js ──
if (exists('node')) {
  log(`Node.js ${execSync('node --version', { encoding: 'utf8' }).trim()}`);
} else {
  warn('Node.js not found, install manually or via nvm');
}

// ── 3. Bun ──
if (exists('bun')) {
  log(`Bun ${execSync('bun --version', { encoding: 'utf8' }).trim()}`);
} else {
  warn('Bun not found, installing...');
  execSync('curl -fsSL https://bun.sh/install | bash', { stdio: 'inherit' });
}

// ── 4. Docker ──
if (exists('docker')) {
  log(`Docker ${execSync('docker --version', { encoding: 'utf8' }).trim()}`);
} else {
  warn('Docker not found, installing...');
  execSync('curl -fsSL https://get.docker.com | sh', { stdio: 'inherit' });
}

// ── 5. Frontend build ──
log('Running bun install...');
cmd('bun', 'install');

log('Running bun run build...');
cmd('bun', 'run', 'build');

// ── 6. Rust release build ──
log('Running cargo build --release --workspace...');
cmd('cargo', 'build', '--release', '--workspace');

// ── 7. Docker images ──
const tag = execSync('git rev-parse --short HEAD', { encoding: 'utf8', cwd: ROOT }).trim();
log(`Building Docker images with tag: ${tag}`);

const images = [
  ['docker/app.Dockerfile',       `app:${tag}`],
  ['docker/email.Dockerfile',     `email-worker:${tag}`],
  ['docker/githook.Dockerfile',   `git-hook:${tag}`],
  ['docker/gitserver.Dockerfile', `gitserver:${tag}`],
  ['docker/metrics.Dockerfile',   `metrics-aggregator:${tag}`],
  ['docker/static.Dockerfile',    `static-server:${tag}`],
  ['docker/gingress.Dockerfile',  `gingress:${tag}`],
];

for (const [df, t] of images) {
  log(`Building ${t}...`);
  execSync(`docker build -f "${df}" -t "${t}" .`, { cwd: ROOT, stdio: 'inherit' });
}

log('All images built successfully.');