import common from '../../utils/util';
import main from '../../utils/main';
import constant1 from '../../utils/constant';

Page({
  data: {
    wordList: [],
    selectedWords: [],
    difficulty: 0,
    difficulties: constant1.arrHardLevel,
    articleStyles: constant1.arrArticleStyle,
    articleStyle: '',
    generatedArticle: '',
    articleTranslation: '',
    generating: false,
    Content:"",
  },

  onLoad: function(options) {
    let that=this;
    that.setData({
      Containnerheight: main.getWindowHeight(),
      IsShowTranslate:false,
    });
    let words=options.words;
    if (!options.words)
      words="boy,girl,king,come,go,yellow,dragon,fire";
    if (words) {
      try {
        const wordList = words.split(",");
        this.setData({ wordList });
      } catch (e) {
        wx.showToast({
          title: '数据加载失败',
          icon: 'none'
        });
      }
    }
  },

  onDifficultyChange: function(e) {
    this.setData({
      difficulty: Number(e.detail.value)
    });
  },

  onArticleStyleChange: function(e) {
    this.setData({
      articleStyle: e.detail.value
    });
    console.log('选择的文章类型:', e.detail.value);
  },

  generateArticle: async function() {
    let that=this;

    if (!this.data.articleStyle) {
      wx.showToast({
        title: '请选择文章类型',
        icon: 'none'
      });
      return;
    }

    this.setData({ 
      generating: true,
      Content:"" 
    });

    try {
      let url = common.Encrypt("GenerateArticle");
      //url="https://www.kylx365.com/apiData/"+url;
      url="http://localhost:3020/api/GenerateArticle";
      let words=that.data.wordList;
      const cloudRes = await new Promise((resolve, reject) => {
        wx.request({
          url: url,
          method: "POST",
          data: {
            Words:JSON.stringify(words),
            Level:that.data.difficulty,
            Style:that.data.articleStyle
          },
          success: resolve,
          fail: reject,
        })
      });
      //console.log(cloudRes);
      let result=cloudRes.data.result.choices[0].message.content;
      console.log(result);
      let content=JSON.parse(result);
      //console.log(content);
      for(let i=0;i<content.ArticleEnglish.length;i++){
        for(let j=0;j<content.FormsOfWords.length;j++){
          let word = content.FormsOfWords[j];
          let regex = new RegExp(`\\b${word}\\b[.,!?;:]?`, 'gi');
          content.ArticleEnglish[i] = content.ArticleEnglish[i].replace(regex, match => {
            let punctuation = match.match(/[.,!?;:]$/);
            let punc = punctuation ? punctuation[0] : '';
            let wordPart = match.replace(/[.,!?;:]$/, '');
            return `<span class='highlight'>${wordPart}</span>${punc}`;
          });
        }
      }
      content.ArticleEnglishStr=content.ArticleEnglish.join("");
      for(let i=0;i<content.Question.length;i++){
        for(let j=0;j<content.Question[i].OptionsEnglish.length;j++){
          let str=content.Question[i].OptionsChinese[j];
          content.Question[i].OptionsChinese[j]=str.substr(2);
        }
      }
      this.setData({
        Content:content,
        generating: false
      });
    } catch (error) {
      console.error('生成文章失败:', error);
      wx.showToast({
        title: '生成文章失败',
        icon: 'none'
      });
      this.setData({ generating: false });
    }
  },

  showTranslate:function(e){
    this.setData({
      IsShowTranslate:!this.data.IsShowTranslate,
    })
  },

  generateTestArticle:function(e){
    this.setData({
      Content:{
        Title: "Sample Reading Article",
        ArticleEnglishStr:"This is a <span>sample</span> article for testing the PDF generation functionality.It contains multiple paragraphs and some <span>bold text</span> to test formatting.The PDF should be generated with proper layout and styling.",
        ArticleEnglish: [
          "This is a <span>sample</span> article for testing the PDF generation functionality.",
          "It contains multiple paragraphs and some <span>bold text</span> to test formatting.",
          "The PDF should be generated with proper layout and styling."
        ],
        Question: [
          {
            QuestionEnglish: "What is the purpose of this article?",
            OptionsEnglish: [
              "A. To test PDF generation",
              "B. To teach English",
              "C. To demonstrate formatting",
              "D. All of the above"
            ]
          },
          {
            QuestionEnglish: "What special formatting is used in this article?",
            OptionsEnglish: [
              "A. Italics",
              "B. Bold text",
              "C. Underline",
              "D. Strikethrough"
            ]
          }
        ]
      },
    })
  },

  //生成PDF文件
  //访问服务器的GeneratePDF接口，提交this.data.Content数据，获得一个生成好的pdf文件，服务端的代码已经生成好
  generatePDF: function(e) {
    let that = this;
    this.setData({ 
      generatingPDF: true,
    });
    
    let url = common.Encrypt("GeneratePDF");
    url = "https://www.kylx365.com/apiData/" + url;
    //url="http://localhost:3020/api/GeneratePDF";
    wx.request({
      url: url,
      method: "POST",
      data: {
        Content: that.data.Content
      },
      responseType: 'arraybuffer',  // 确保响应类型为arraybuffer
      success: function(res) {
        // 将arraybuffer转为临时文件
        const fsm = wx.getFileSystemManager();
        const tempFilePath = `${wx.env.USER_DATA_PATH}/temp_${Date.now()}.pdf`;
        
        try {
          fsm.writeFileSync(
            tempFilePath,
            res.data,
            'binary'
          );

          // 直接使用临时文件路径，不再尝试永久保存
          console.log('文件已生成:', tempFilePath);
          
          // 打开PDF文件预览
          wx.openDocument({
            filePath: tempFilePath,
            fileType: 'pdf',
            showMenu: true,  // 显示右上角菜单，可以分享
            success: function() {
              console.log('打开文档成功');
              wx.showToast({
                title: 'PDF生成成功',
                icon: 'success'
              });
            },
            fail: function(error) {
              console.error('打开文档失败:', error);
              wx.showToast({
                title: '打开文件失败',
                icon: 'none'
              });
            }
          });
        } catch (error) {
          console.error('写入文件失败:', error);
          wx.showToast({
            title: '写入文件失败',
            icon: 'none'
          });
        }
      },
      fail: function(err) {
        console.error('请求GeneratePDF接口失败:', err);
        wx.showToast({
          title: '网络错误，请稍候重试',
          icon: 'none'
        });
      },
      complete: function() {
        that.setData({ generatingPDF: false });
      }
    });
  },

});