Page({
  data: {
    question: {},         // 当前题目
    options: [],          // 格式化后的选项
    selectedIndex: null,  // 用户选中的选项索引
    score: 0,             // 用户得分
    showResult: false,    // 是否显示结果弹窗
    isCorrect: false,     // 答案是否正确
    resultText: "",       // 结果提示文本
    explanation: "",      // 答案解析
    loading: false        // 加载状态
  },

  onLoad() {
    this.loadQuestion();
  },

  // 从API加载随机题目
  loadQuestion() {
    this.setData({ loading: true });
    
    wx.request({
      url: 'http://127.0.0.1:8000/api/questions/random/',
      method: 'GET',
      success: (res) => {
        if (res.statusCode === 200) {
          this.processQuestionData(res.data);
        } else {
          this.handleError('题目加载失败');
        }
      },
      fail: (err) => {
        this.handleError('网络请求失败');
        this.useLocalData(); // 失败时使用本地测试数据
      },
      complete: () => {
        this.setData({ loading: false });
      }
    });
  },

  // 处理API返回的题目数据
  processQuestionData(apiData) {
    // 确保数据完整性
    if (!apiData.choices || apiData.choices.length === 0) {
      this.handleError('题目数据不完整');
      return this.useLocalData();
    }

    this.setData({
      question: apiData,
      explanation: apiData.explanation || "暂无解析"
    });

    // 格式化选项为A/B/C/D
    const options = apiData.choices.map((choice, index) => ({
      id: choice.id,
      key: String.fromCharCode(65 + index), // A, B, C...
      value: choice.text,
      isCorrect: choice.is_correct
    }));

    this.setData({ 
      options,
      selectedIndex: null,
      showResult: false
    });
  },

  // 用户选择选项
  selectOption(e) {
    this.setData({
      selectedIndex: e.currentTarget.dataset.index
    });
  },

  // 提交答案
  submitAnswer() {
    if (this.data.selectedIndex === null) {
      wx.showToast({ title: '请先选择答案', icon: 'none' });
      return;
    }

    const selectedOption = this.data.options[this.data.selectedIndex];
    const isCorrect = selectedOption.isCorrect;
    const scoreChange = isCorrect ? 2 : -1;

    this.setData({
      showResult: true,
      isCorrect,
      score: Math.max(0, this.data.score + scoreChange),
      resultText: isCorrect ? 
        '回答正确！+2分' : 
        `回答错误！正确答案：${this.getCorrectAnswer()}`
    });
  },

  // 获取正确答案文本
  getCorrectAnswer() {
    const correctOption = this.data.options.find(opt => opt.isCorrect);
    return correctOption ? `${correctOption.key}. ${correctOption.value}` : '';
  },

  // 下一题
  nextQuestion() {
    this.loadQuestion();
  },

  // 错误处理
  handleError(msg) {
    console.error(msg);
    wx.showToast({ title: msg, icon: 'none' });
  },
  onShow(){
    this.recordFeatureUsage('quiz-main');
  },
  recordFeatureUsage(featureName) {
    const app = getApp();
    console.log('发送的Token:', app.globalData.userInfo.token);
    console.log('发送的featureName:', featureName);
  
    wx.request({
      url: 'http://127.0.0.1:8000/api/record-usage/',
      method: 'POST',
      header: {
        'Authorization': `Token ${app.globalData.userInfo.token}`,
        'Content-Type': 'application/json' // 确保这个请求头存在
      },
      data: JSON.stringify({ // 关键修改：必须使用JSON.stringify
        feature_name: featureName // 参数名必须与后端一致
      }),
      success: (res) => {
        console.log('行为记录响应:', res.data);
      },
      fail: (err) => {
        console.error('请求失败:', err);
      }
    });
  },
})