web3-202226701052/src/app/tab2/tab2.page.ts

// src/app/tab2/tab2.page.ts
import { Component, OnInit } from '@angular/core';
import { HttpClient } from '@angular/common/http';

@Component({
  selector: 'app-tab2',
  templateUrl: './tab2.page.html',
  styleUrls: ['./tab2.page.scss'],
})
export class Tab2Page implements OnInit {
  messages: any[] = [];
  userInput: string = '';
  isLoading: boolean = false;

  constructor(private http: HttpClient) {}

  ngOnInit() {
    // 页面加载时自动发送一条随机的欢迎消息
    const welcomeMessages = [
      '我是您的AI医生小爱，有什么可以帮到您的吗？',
      '今天天气不错，可以出去散步哦。',
      '您好！我是您的健康助手，有什么我可以帮助您的吗？',
      '很高兴见到您！请告诉我您需要什么帮助。',
      '欢迎您！请问有什么健康方面的问题需要咨询吗？'
    ];

    const randomMessage = welcomeMessages[Math.floor(Math.random() * welcomeMessages.length)];
    this.sendMessageFromAI(randomMessage);
  }

  sendMessage() {
    if (this.userInput.trim() === '') return;

    this.messages.push({ text: this.userInput, sender: 'user' });
    this.isLoading = true;
    this.userInput = '';

    // 发送请求到 AI 服务
    this.http.post('https://your-ai-service-endpoint.com/api/chat', { message: this.userInput })
      .subscribe((response: any) => {
        this.messages.push({ text: response.message, sender: 'ai' });
        this.isLoading = false;
      }, (error) => {
        console.error('Error:', error);
        this.messages.push({ text: '抱歉，系统出现错误，请稍后再试。', sender: 'ai' });
        this.isLoading = false;
      });
  }

  // 定义 sendMessageFromAI 方法
  sendMessageFromAI(message: string) {
    this.messages.push({ text: message, sender: 'ai' });
  }
}