/**
 * MessageBubble 聊天气泡（规范 §61-63）
 *
 * bubbleType: self / other / system
 * self：右对齐，主红气泡
 * other：左对齐，白色气泡
 * system：居中，灰色文字（如"成功牵手"系统提示）
 *
 * 失败状态：sendStatus='failed' 时显示重试图标。
 */
Component({
  options: { addGlobalClass: true },
  properties: {
    bubbleType: { type: String, value: 'other' },
    content: { type: String, value: '' },
    sentAt: { type: Number, value: 0 },
    sentAtText: { type: String, value: '' },
    avatarUrl: { type: String, value: '' },
    showAvatar: { type: Boolean, value: true },
    showTime: { type: Boolean, value: false },
    sendStatus: { type: String, value: 'sent' },  // sending|sent|failed
  },
  methods: {
    onRetry() {
      if (this.data.sendStatus !== 'failed') return;
      this.triggerEvent('retry', {});
    },
  },
});