package com.smartreview.vo.question;

import com.smartreview.enums.QuestionGenerationStatus;
import lombok.Data;

import java.util.List;

/**
 * 题目生成响应VO
 */
@Data
public class QuestionGenerationResponseVO {

    /**
     * 生成状态：GENERATING / COMPLETED / FAILED
     */
    private QuestionGenerationStatus status;

    /**
     * 任务ID
     */
    private Long taskId;

    /**
     * 消息提示
     */
    private String message;

    /**
     * 题目列表（状态为COMPLETED时返回）
     */
    private List<QuestionVO> questions;

    /**
     * 错误信息（状态为FAILED时返回）
     */
    private String error;

    public static QuestionGenerationResponseVO generating(Long taskId) {
        QuestionGenerationResponseVO vo = new QuestionGenerationResponseVO();
        vo.setStatus(QuestionGenerationStatus.GENERATING);
        vo.setTaskId(taskId);
        vo.setMessage("正在生成题目，请稍候...");
        return vo;
    }

    public static QuestionGenerationResponseVO completed(Long taskId, List<QuestionVO> questions) {
        QuestionGenerationResponseVO vo = new QuestionGenerationResponseVO();
        vo.setStatus(QuestionGenerationStatus.COMPLETED);
        vo.setTaskId(taskId);
        vo.setMessage("题目生成完成");
        vo.setQuestions(questions);
        return vo;
    }

    public static QuestionGenerationResponseVO failed(Long taskId, String error) {
        QuestionGenerationResponseVO vo = new QuestionGenerationResponseVO();
        vo.setStatus(QuestionGenerationStatus.FAILED);
        vo.setTaskId(taskId);
        vo.setMessage("题目生成失败");
        vo.setError(error);
        return vo;
    }
}