#!/usr/bin/env node
import { spawn } from 'node:child_process';
import fs from 'node:fs';
import path from 'node:path';
import { fileURLToPath } from 'node:url';

const root = path.join(path.dirname(fileURLToPath(import.meta.url)), '..');
const portalPort = Number(process.env.H5_PORT ?? 8081);
const portalUrl = `http://127.0.0.1:${portalPort}`;

function loadEnvFile(filePath) {
  if (!fs.existsSync(filePath)) return;
  for (const line of fs.readFileSync(filePath, 'utf8').split('\n')) {
    const trimmed = line.trim();
    if (!trimmed || trimmed.startsWith('#')) continue;
    const eq = trimmed.indexOf('=');
    if (eq < 0) continue;
    const key = trimmed.slice(0, eq).trim();
    const value = trimmed.slice(eq + 1).trim();
    if (!process.env[key]) process.env[key] = value;
  }
}

loadEnvFile(path.join(root, '../../.env.local'));
loadEnvFile(path.join(root, '.env'));

function spawnChild(command, args, label) {
  const child = spawn(command, args, {
    cwd: root,
    env: process.env,
    stdio: 'inherit',
  });
  child.on('exit', (code, signal) => {
    if (signal) return;
    if (code && code !== 0) {
      console.error(`[${label}] exited with code ${code}`);
      shutdown(code ?? 1);
    }
  });
  return child;
}

let server;
let vite;
let stopping = false;

function shutdown(code = 0) {
  if (stopping) return;
  stopping = true;
  server?.kill('SIGTERM');
  vite?.kill('SIGTERM');
  setTimeout(() => process.exit(code), 300);
}

process.on('SIGINT', () => shutdown(0));
process.on('SIGTERM', () => shutdown(0));

async function waitForPortal(retries = 40) {
  for (let i = 0; i < retries; i += 1) {
    try {
      const res = await fetch(`${portalUrl}/auth/status`);
      if (res.ok) return;
    } catch {
      // portal still starting
    }
    await new Promise((resolve) => setTimeout(resolve, 250));
  }
  throw new Error(`Portal 未在 ${portalUrl} 启动，请检查 MySQL 配置与 ${portalPort} 端口`);
}

console.log('==> 启动 portal (server.mjs)...');
server = spawnChild('node', ['server.mjs'], 'portal');

try {
  await waitForPortal();
  console.log(`==> Portal 就绪: ${portalUrl}`);
  console.log('==> 启动 Vite @ http://127.0.0.1:5173');
  console.log('==> 我的空间 UI 预览: http://127.0.0.1:5173/?preview=mindspace');
  vite = spawnChild('npx', ['vite'], 'vite');
} catch (err) {
  console.error(err instanceof Error ? err.message : err);
  shutdown(1);
}