/**
 * Electron 冒烟验证：以 ELECTRON_SMOKE_TEST=1 启动应用（不弹窗），
 * 主进程会依次校验 preload 桥接、渲染进程挂载、登录页 DOM、
 * IPC 往返、IndexedDB 缓存读写、断网回退缓存，然后自动退出。
 *
 * 前置条件：已执行 npm run build（需要 dist/main 与 dist/renderer）。
 */
import { spawn } from 'node:child_process';
import fs from 'node:fs';
import path from 'node:path';
import { fileURLToPath } from 'node:url';
import { resolveElectronEnv, resolveElectronExecutable } from '../../../scripts/lib/electron-env.mjs';

const root = path.resolve(path.dirname(fileURLToPath(import.meta.url)), '..');
const repoRoot = path.resolve(root, '..', '..');
const electronPath = resolveElectronExecutable(path.join(root, 'node_modules', 'electron'));
const required = [path.join(root, 'dist/main/index.js'), path.join(root, 'dist/renderer/index.html')];
const missing = required.filter((file) => !fs.existsSync(file));

if (missing.length > 0) {
  console.error('[smoke] 缺少构建产物，请先执行构建：');
  console.error('  pnpm --filter @classhelper/desktop-client build');
  for (const file of missing) console.error(`  缺失: ${path.relative(root, file)}`);
  process.exit(2);
}

console.log('[smoke] 启动 Electron 冒烟验证...\n');

// 独立的 userData：避免与用户正在运行的客户端抢单实例锁（否则新进程会静默退出）。
// 目录按进程号区分：上一次冒烟若被强杀，目录可能仍被句柄占用（rmSync 会 ENOTEMPTY），
// 用独立目录可以彻底避免互相干扰。
const profileDir = path.join(repoRoot, '.cache', `desktop-smoke-profile-${process.pid}`);
try {
  fs.rmSync(profileDir, { recursive: true, force: true, maxRetries: 3, retryDelay: 200 });
} catch (error) {
  console.warn(`[smoke] 复用/清理配置目录失败（忽略）：${error?.message ?? error}`);
}
console.log(`[smoke] 独立配置目录：${profileDir}`);

// 未显式指定时自动探测后端：可达则启用联网集成 + 侧边栏点击测试
let online = process.env.ELECTRON_SMOKE_ONLINE;
if (online === undefined) {
  online = '0';
  try {
    const controller = new AbortController();
    const timer = setTimeout(() => controller.abort(), 2500);
    const response = await fetch('http://127.0.0.1:4000/api/health', { signal: controller.signal });
    clearTimeout(timer);
    online = response.ok ? '1' : '0';
  } catch {
    online = '0';
  }
  console.log(
    online === '1'
      ? '[smoke] 检测到后端在线，将执行联网集成与侧边栏点击测试'
      : '[smoke] 后端未在线，仅执行本地检查（离线缓存/界面渲染）；如需联网测试请先启动 pnpm dev:server',
  );
}

/**
 * 准备一个已知可用的班级账号（学生端已改为班级码 + 班级密码登录）：
 * 用管理员账号登录 → 取第一个班级 → 重置成冒烟专用密码（必要时补一个班级码）。
 * 这样无论被测实例是全新安装还是升级安装，冒烟都能拿到可用凭据。
 */
async function provisionClassAccount() {
  const base = process.env.ELECTRON_SMOKE_API ?? 'http://127.0.0.1:4000/api';
  const username = process.env.ELECTRON_SMOKE_ADMIN ?? 'admin';
  const adminPassword = process.env.ELECTRON_SMOKE_ADMIN_PASSWORD ?? 'admin123';
  const password = process.env.ELECTRON_SMOKE_CLASS_PASSWORD ?? 'smoke123456';
  try {
    const loginResponse = await fetch(`${base}/auth/login`, {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({ username, password: adminPassword }),
    });
    const login = await loginResponse.json();
    const token = login?.data?.token;
    if (!token) return null;

    const authHeaders = { Authorization: `Bearer ${token}`, 'Content-Type': 'application/json' };
    const classesResponse = await fetch(`${base}/classes`, { headers: authHeaders });
    const classes = (await classesResponse.json())?.data ?? [];
    const target = classes[0];
    if (!target) return null;

    const code = target.code || `SMOKE${Math.floor(Math.random() * 9000 + 1000)}`;
    const patchResponse = await fetch(`${base}/classes/${target.id}/class-account`, {
      method: 'PATCH',
      headers: authHeaders,
      body: JSON.stringify({ code, password }),
    });
    if (!patchResponse.ok) return null;

    const patched = (await patchResponse.json())?.data;
    return { code: patched?.code ?? code, password, className: target.name };
  } catch {
    return null;
  }
}

let classCredentials = null;
if (online === '1') {
  classCredentials = await provisionClassAccount();
  console.log(
    classCredentials
      ? `[smoke] 班级账号就绪：${classCredentials.code}（${classCredentials.className}）`
      : '[smoke] 未能准备班级账号，联网集成将使用种子默认凭据',
  );
}

const child = spawn(electronPath, ['.'], {
  cwd: root,
  stdio: 'inherit',
  env: resolveElectronEnv({
    ELECTRON_SMOKE_TEST: '1',
    ELECTRON_SMOKE_ONLINE: online,
    ELECTRON_SMOKE_PROFILE: profileDir,
    ELECTRON_SMOKE_CLASS_CODE: classCredentials?.code ?? '',
    ELECTRON_SMOKE_CLASS_PASSWORD: classCredentials?.password ?? '',
  }),
});

child.on('exit', (code) => {
  console.log(`\n[smoke] Electron 退出，code=${code ?? 1}`);
  process.exit(code ?? 1);
});