// 存储所有客户端ID（用于定向通知）
let controlledClients = [];
// 监听安装事件
self.addEventListener('install', e => e.waitUntil(self.skipWaiting()));

// 监听激活事件
self.addEventListener('activate', e =>
  e.waitUntil(clients.claim().then(() => self.clients.matchAll())
    .then(clients => {
      // 获取所有受控客户端ID
      controlledClients = clients.map(c => c.id);
    })
  )
);

// 监听客户端连接变化（窗口打开/关闭）
self.addEventListener('message', event => {
  if (event.data.type === 'REGISTER_CLIENT') {
    if (!controlledClients.includes(event.data.clientId)) {
      controlledClients.push(event.data.clientId);
    }
  }
});

// 核心：处理锁屏/解锁广播
self.addEventListener('message', event => {
  const { action, senderId } = event.data;

  if (action === 'LOCK' || action === 'UNLOCK') {
    // 向所有其他客户端广播
    self.clients.matchAll().then(clients => {
      clients.forEach(client => {
        // 排除发送者
        if (client.id !== senderId) {
          client.postMessage({
            action: `${action}_REQUESTED`,
            timestamp: Date.now()
          });
        }
      });
    });
  }
});

self.addEventListener('push', event => {
    const title = '新消息';
    const options = {
        body: event.data.text(),
        // icon: '/images/icon.png',
        // badge: '/images/badge.png'
    };

    event.waitUntil(
        self.registration.showNotification(title, options)
    );
});

self.addEventListener('notificationclick', event => {
    event.notification.close();
    event.waitUntil(
        clients.openWindow('https://example.com/notifications')
    );
});