zhsw_wechat/pages/tousujianyi/tousujianyi.js

const app = getApp();
Page({
  data: {
    contact: '',
    phone: '',
    description: '',
    imageList: [],
    showNotification: true,
    countDown: 3,
    isFormValid: false,
    category: '投诉',
    categoryValue: '1',
    isPreviewMode: false,
    title: '',
    content: '',
    replyTime: '',
    replyContent: '',
    formSubmitted: false,
    isSubmitting: false,
    lastSubmitTime: 0,
    categoryMap: [
      {name: '投诉', value: '1'},
      {name: '建议', value: '2'}
    ],
  },

  onLoad: function (options) {
    this.startCountDown();

    // 检查是否是预览模式
    if (options.mode === 'preview') {
      const id = options.id;
      // 获取数据
      this.getDataById(id);
      // 设置为预览模式
      this.setData({
        isPreviewMode: true
      });
    } else {
      // 非预览模式才检查表单有效性
      this.checkFormValidity();
    }
  },

  onShow: function () {
    // 检查是否是从成功页面返回
    if (this.data.formSubmitted) {
      // 重置表单数据
      this.resetForm();
      // 重置提交状态标记
      this.setData({
        formSubmitted: false
      });
    }
  },

  startCountDown: function () {
    let that = this;
    let timer = setInterval(function () {
      if (that.data.countDown > 0) {
        that.setData({
          countDown: that.data.countDown - 1
        });
      } else {
        clearInterval(timer);
      }
    }, 1000);
  },

  goBack: function () {
    wx.navigateBack();
  },

  radioChange: function (e) {
    const value = e.detail.value;
    const selectedCategory = this.data.categoryMap.find(item => item.value === value || item.name === value);
    
    this.setData({
      category: selectedCategory.name,
      categoryValue: selectedCategory.value
    });
    this.checkFormValidity();
  },

  inputContact: function (e) {
    this.setData({
      contact: e.detail.value
    });
    this.checkFormValidity();
  },

  inputPhone: function (e) {
    const value = e.detail.value;
    const phoneNumber = value.replace(/\D/g, '');
    this.setData({
      phone: phoneNumber
    });
    this.checkFormValidity();
  },

  validatePhone: function (phone) {
    const phoneReg = /^1[3-9]\d{9}$/;
    return phoneReg.test(phone);
  },

  inputDescription: function (e) {
    this.setData({
      description: e.detail.value
    });
    this.checkFormValidity();
  },

  chooseImage: function () {
    let that = this;
    if (that.data.imageList.length >= 10) {
      wx.showToast({
        title: '最多只能上传10张图片',
        icon: 'none'
      });
      return;
    }

    wx.chooseMedia({
      count: 10 - that.data.imageList.length,
      mediaType: ['image'],
      sourceType: ['album', 'camera'],
      sizeType: ['compressed'],
      success: function (res) {
        let tempFiles = res.tempFiles;
        let validFiles = [];

        for (let i = 0; i < tempFiles.length; i++) {
          const file = tempFiles[i];
          if (file.size <= 10 * 1024 * 1024) {
            validFiles.push(file);
          } else {
            wx.showToast({
              title: '图片大小不能超过10M',
              icon: 'none'
            });
          }
        }

        if (validFiles.length > 0) {
          wx.showLoading({
            title: '图片压缩中...',
            mask: true
          });
          
          let processedFiles = new Array(validFiles.length);
          let processCount = 0;
          
          // 处理每个图片
          validFiles.forEach((file, index) => {
            that.compressImage(file.tempFilePath).then(compressedPath => {
              processCount++;
              // 获取压缩后图片的信息
              wx.getFileInfo({
                filePath: compressedPath,
                success: (fileInfo) => {
                  console.log('原始大小:', file.size / 1024, 'KB');
                  console.log('压缩后大小:', fileInfo.size / 1024, 'KB');
                  
                  // 在对应位置添加压缩后的图片路径
                  processedFiles[index] = {
                    tempFilePath: compressedPath,
                    size: fileInfo.size
                  };
                  
                  // 检查是否所有图片都已处理完成
                  if (processCount === validFiles.length) {
                    // 过滤掉可能的空值，并按顺序合并
                    let newImageList = that.data.imageList.concat(processedFiles.filter(item => item));
                    that.setData({
                      imageList: newImageList
                    });
                    wx.hideLoading();
                  }
                },
                fail: (err) => {
                  console.error('获取文件信息失败:', err);
                  processCount++;
                  // 如果失败，也要检查是否处理完所有图片
                  if (processCount === validFiles.length) {
                    wx.hideLoading();
                  }
                }
              });
            }).catch(err => {
              console.error('图片压缩失败:', err);
              processCount++;
              if (processCount === validFiles.length) {
                wx.hideLoading();
              }
            });
          });
        }
      }
    });
  },
  
  // 使用canvas进行图片压缩
  compressImage: function(imagePath) {
    return new Promise((resolve, reject) => {
      // 获取图片信息
      wx.getImageInfo({
        src: imagePath,
        success: (res) => {
          // 先获取原图大小，单位KB
          wx.getFileInfo({
            filePath: imagePath,
            success: (fileInfo) => {
              const originalSize = fileInfo.size / 1024; // 原始大小，单位KB
              // 根据原图大小确定压缩质量
              let targetQuality = 0.8; // 默认压缩质量
              
              if (originalSize <= 500) {
                // 如果原图已经小于500KB，保持较高质量
                targetQuality = 0.9;
              } else if (originalSize <= 1024) {
                // 1MB以下，适当压缩
                targetQuality = 0.7;
              } else if (originalSize <= 2048) {
                // 2MB以下，中等压缩
                targetQuality = 0.5;
              } else if (originalSize <= 5120) {
                // 5MB以下，较大压缩
                targetQuality = 0.3;
              } else {
                // 超过5MB，大幅压缩
                targetQuality = 0.2;
              }
              
              // 创建canvas上下文
              wx.createSelectorQuery()
                .select('#compressCanvas')
                .fields({ node: true, size: true })
                .exec((canvasRes) => {
                  if (!canvasRes || !canvasRes[0] || !canvasRes[0].node) {
                    // 如果找不到canvas节点，则返回原图
                    resolve(imagePath);
                    return;
                  }
                  
                  const canvas = canvasRes[0].node;
                  const ctx = canvas.getContext('2d');
                  const image = canvas.createImage();
                  
                  image.onload = () => {
                    // 计算要缩放的尺寸，保持宽高比
                    let ratio = 1;
                    
                    // 根据原图大小调整尺寸
                    if (originalSize > 5120) { // 5MB以上
                      ratio = Math.min(1, 1200 / res.width, 1200 / res.height);
                    } else if (originalSize > 2048) { // 2MB以上
                      ratio = Math.min(1, 1500 / res.width, 1500 / res.height);
                    } else if (originalSize > 1024) { // 1MB以上
                      ratio = Math.min(1, 1800 / res.width, 1800 / res.height);
                    } else {
                      ratio = Math.min(1, 2000 / res.width, 2000 / res.height);
                    }
                    
                    const targetWidth = Math.round(res.width * ratio);
                    const targetHeight = Math.round(res.height * ratio);
                    
                    // 设置canvas尺寸
                    canvas.width = targetWidth;
                    canvas.height = targetHeight;
                    
                    // 清除画布
                    ctx.clearRect(0, 0, targetWidth, targetHeight);
                    
                    // 绘制图片
                    ctx.drawImage(image, 0, 0, targetWidth, targetHeight);
                    
                    // 压缩参数
                    const compressOptions = {
                      canvas: canvas,
                      width: targetWidth,
                      height: targetHeight,
                      destWidth: targetWidth,
                      destHeight: targetHeight,
                      fileType: 'jpg',
                      quality: targetQuality
                    };
                    
                    // 第一次尝试压缩
                    const tryCompress = (quality, attempt = 1) => {
                      compressOptions.quality = quality;
                      
                      wx.canvasToTempFilePath({
                        ...compressOptions,
                        success: (result) => {
                          // 检查压缩后的大小
                          wx.getFileInfo({
                            filePath: result.tempFilePath,
                            success: (compressedInfo) => {
                              const compressedSize = compressedInfo.size / 1024; // 压缩后大小，单位KB
                              console.log(`压缩后大小 (质量:${quality})`, compressedSize, 'KB');
                              
                              // 如果压缩后大小仍大于500KB且尝试次数未达上限，继续压缩
                              if (compressedSize > 500 && attempt < 3) {
                                // 递减质量
                                const newQuality = Math.max(0.1, quality - 0.2);
                                console.log(`尝试重新压缩，质量降低至${newQuality}`);
                                tryCompress(newQuality, attempt + 1);
                              } 
                              // 如果压缩后小于200KB且质量非最高，尝试提高质量
                              else if (compressedSize < 200 && quality < 0.9 && attempt < 3) {
                                // 递增质量
                                const newQuality = Math.min(0.9, quality + 0.2);
                                console.log(`尝试重新压缩，质量提高至${newQuality}`);
                                tryCompress(newQuality, attempt + 1);
                              }
                              else {
                                // 返回压缩后的图片
                                resolve(result.tempFilePath);
                              }
                            },
                            fail: (error) => {
                              console.error('获取压缩后图片信息失败:', error);
                              resolve(result.tempFilePath);
                            }
                          });
                        },
                        fail: (error) => {
                          console.error('Canvas转图片失败:', error);
                          // 如果转换失败则返回原图
                          resolve(imagePath);
                        }
                      });
                    };
                    
                    // 开始尝试压缩
                    tryCompress(targetQuality);
                  };
                  
                  image.onerror = () => {
                    console.error('图片加载失败');
                    resolve(imagePath);
                  };
                  
                  image.src = imagePath;
                });
            },
            fail: (error) => {
              console.error('获取原始图片信息失败:', error);
              resolve(imagePath);
            }
          });
        },
        fail: (error) => {
          console.error('获取图片信息失败:', error);
          resolve(imagePath);
        }
      });
    });
  },

  previewImage: function (e) {
    let index = e.currentTarget.dataset.index;
    wx.previewImage({
      current: this.data.imageList[index],
      urls: this.data.imageList
    });
  },

  deleteImage: function (e) {
    let index = e.currentTarget.dataset.index;
    let imageList = this.data.imageList;
    imageList.splice(index, 1);
    this.setData({
      imageList: imageList
    });
  },

  checkFormValidity: function () {
    const {
      contact,
      phone,
      description,
      category
    } = this.data;
    // 只检查必填项：联系人、联系电话和内容说明
    const isValid = contact.trim() !== '' && this.validatePhone(phone) && description.trim() !== '';

    this.setData({
      isFormValid: isValid
    });

    return isValid;
  },

  onInputChange: function (e) {
    const {
      field
    } = e.currentTarget.dataset;
    const {
      value
    } = e.detail;

    this.setData({
      [field]: value
    });

    this.checkFormValidity();
  },

  bindPickerChange: function (e) {
    this.checkFormValidity();
  },

  // 添加submitForm方法
  submitForm: function () {
    // 如果正在提交中，直接返回
    if (this.data.isSubmitting) {
      return;
    }
   
    if (!this.checkFormValidity()) {
      let errorMsg = '';

      if (!this.data.contact.trim()) {
        errorMsg = '请填写联系人';
      } else if (!this.validatePhone(this.data.phone)) {
        errorMsg = '请输入正确的联系电话';
      } else if (!this.data.description.trim()) {
        errorMsg = '请填写内容说明';
      }

      wx.showToast({
        title: errorMsg,
        icon: 'none'
      });
      return;
    }

    const now = Date.now();
    const lastSubmitTime = this.data.lastSubmitTime;
    // 如果距离上次提交时间小于 2 秒，直接返回
    if (now - lastSubmitTime < 2000) {
      // wx.showToast({
      //   title: '请勿重复提交',
      //   icon: 'none',
      // });
      return;
    }

    // 更新上次提交时间
    this.setData({
      lastSubmitTime: now,
    });

    const fileManager = wx.getFileSystemManager();
    this.data.imageList.map(imgInfo => {
      const base64 = fileManager.readFileSync(imgInfo.tempFilePath, 'base64');
      imgInfo.base64 = base64;
      return imgInfo;
    })
    const submitData = {
      category: this.data.categoryValue,
      contact: this.data.contact,
      phone: this.data.phone,
      description: this.data.description,
      images: this.data.imageList,
      userName: app.globalData.currentAccountInfo.username,
      userNum:  app.globalData.currentAccountInfo.usernumber
    };
debugger
    // 设置正在提交中 防止重复点击提交按钮
    this.setData({
      isSubmitting: true,
    });

    console.log('提交的数据:', submitData);

    wx.showLoading({
      title: '提交中...',
    });
    wx.request({
      url: app.globalData.interfaceUrls.feedback,
      method: 'POST',
      header: {
        'content-type': 'application/json', // 默认值
        'token': app.globalData.userWxInfo.token,
        'source': "wc",
        '!SAAS_LOGIN_TOKEN_!': app.globalData.currentAccountInfo.dsKey
      },
      data: submitData,
      success(res) {
        wx.hideLoading();
        if (res.data.code == '200') {
          wx.navigateTo({
            url: '/pages/tousujianyiSuccess/tousujianyiSuccess',
          });
        }
      },
      fail(error) {
        wx.hideLoading()
        utils.simleInfo('登记失败，请稍后再试')
      },
      complete: () => {
        this.setData({
          isSubmitting: false, // 提交完成，重置标志位，可继续提交
          formSubmitted: true // 在提交成功后设置标记，返回将重置表单
        });
      },
    })
    // 在提交成功后设置标记，返回将重置表单
    // this.setData({
    //   formSubmitted: true
    // });
  },

  submitRepair: function () {
    this.submitForm();
  },

  // 根据ID获取数据
  getDataById: function (id) {
    // 这里应该是从服务器获取数据
    // 但为了演示，我们从本地数据中获取
    const pages = getCurrentPages();
    const prevPage = pages[pages.length - 2]; // 获取上一个页面

    if (prevPage && prevPage.data.noticeList) {
      const item = prevPage.data.noticeList.find(item => item.id == id);
      if (item) {
        const formatTime = (timeString) => {
          if (!timeString) return ''; // 如果时间为空，返回空字符串
          const date = new Date(timeString);
          const year = date.getFullYear();
          const month = String(date.getMonth() + 1).padStart(2, '0'); // 月份补零
          const day = String(date.getDate()).padStart(2, '0'); // 日期补零
          return `${year}-${month}-${day}`;
        };
        
        let categoryName = '投诉';
        const categoryItem = this.data.categoryMap.find(cat => cat.value === item.category);
        if (categoryItem) {
          categoryName = categoryItem.name;
        }
        
        this.setData({
          category: categoryName,
          categoryValue: item.category || '1',
          contact: item.feedbackperson || '',
          description: item.replynote || '',
          phone: item.contactnumber || '',
          imageList: item.attachments || [],
          replyTime: formatTime(item.replytime) || '',
          replyContent: item.replycontent || ''
        });
      }
    }
  },

  resetForm: function () {
    this.setData({
      contact: '',
      phone: '',
      description: '',
      imageList: [],
      category: '投诉',
      categoryValue: '1'
    });
  }
});