intelligent-interview/interview-web/src/lib/ai-api.service.ts

import { Injectable } from '@angular/core';
import { TestCompletion, generateInterviewEvaluation } from './completion';

export interface TestMessage {
    role: string;
    content: string;
}

@Injectable({
    providedIn: 'root'
})
export class AiApiService {
    private positionRequirements = `
    岗位要求：
    - 3年以上相关工作经验
    - 精通至少一种主流编程语言
    - 良好的沟通能力和团队协作精神
    - 解决问题的能力
    `;

    constructor() { }

    async evaluateInterviewAnswer(
        question: string,
        answer: string,
        onMessage?: (content: string) => void
    ) {
        try {
            const evaluation = await generateInterviewEvaluation(
                question,
                answer,
                this.positionRequirements,
                onMessage
            );
            
            // 确保返回标准化的评估结果
            return {
                score: evaluation.score || 0,
                feedback: evaluation.feedback || "暂无反馈",
                followUpQuestion: evaluation.followUpQuestion || "能否详细说明一下？",
                metrics: {
                    expressiveness: evaluation.metrics?.expressiveness || 0,
                    professionalism: evaluation.metrics?.professionalism || 0,
                    relevance: evaluation.metrics?.relevance || 0
                }
            };
        } catch (error) {
            console.error('评估失败:', error);
            return this.getDefaultEvaluation();
        }
    }

    private getDefaultEvaluation() {
        return {
            score: 70,
            feedback: "回答基本符合要求，但缺乏具体细节",
            followUpQuestion: "能否详细说明一下？",
            metrics: {
                expressiveness: 70,
                professionalism: 65,
                relevance: 60
            }
        };
    }

    async generateFollowUpQuestion(
        conversationHistory: TestMessage[],
        onMessage?: (content: string) => void
    ): Promise<string> {
        const prompt = `根据以下对话历史，生成一个有针对性的追问问题：
${conversationHistory.map(msg => `${msg.role}: ${msg.content}`).join('\n')}

要求：
- 问题应针对候选人的回答深入挖掘
- 问题应简洁明了
- 只返回问题内容，不要包含其他说明`;

        const messages: TestMessage[] = [
            { role: "user", content: prompt }
        ];

        const completion = new TestCompletion(messages);
        const result = await completion.sendMessage(messages, onMessage);
        return result || "能否详细说明一下？";
    }
}