import { createComment } from '../../../services/comments/createComment';
import Toast from 'tdesign-miniprogram/toast/index';

Page({
  data: {
    orderItem: null,
    rating: 5,
    content: '',
    images: [],
    isAnonymous: false,
    submitting: false,
    maxImages: 9,
    maxContentLength: 500
  },

  onLoad(options) {
    console.log('评论页面加载', options);
    
    // 从页面参数获取订单项信息
    if (options.orderItemData) {
      try {
        const orderItem = JSON.parse(decodeURIComponent(options.orderItemData));
        this.setData({ orderItem });
        console.log('订单项信息', orderItem);
      } catch (e) {
        console.error('解析订单项数据失败', e);
        Toast({
          context: this,
          selector: '#t-toast',
          message: '参数错误',
          icon: 'error-circle',
        });
        setTimeout(() => {
          wx.navigateBack();
        }, 1500);
      }
    } else {
      Toast({
        context: this,
        selector: '#t-toast',
        message: '缺少订单信息',
        icon: 'error-circle',
      });
      setTimeout(() => {
        wx.navigateBack();
      }, 1500);
    }
  },

  // 评分变化
  onRatingChange(e) {
    this.setData({
      rating: e.detail.value
    });
  },

  // 评论内容输入
  onContentInput(e) {
    this.setData({
      content: e.detail.value
    });
  },

  // 匿名评论切换
  onAnonymousChange(e) {
    this.setData({
      isAnonymous: e.detail.value
    });
  },

  // 选择图片
  onChooseImage() {
    const { images, maxImages } = this.data;
    const remainCount = maxImages - images.length;
    
    if (remainCount <= 0) {
      Toast({
        context: this,
        selector: '#t-toast',
        message: `最多只能上传${maxImages}张图片`,
        icon: 'error-circle',
      });
      return;
    }

    wx.chooseMedia({
      count: remainCount,
      mediaType: ['image'],
      sourceType: ['album', 'camera'],
      success: (res) => {
        const newImages = res.tempFiles.map(file => file.tempFilePath);
        this.setData({
          images: [...images, ...newImages]
        });
      },
      fail: (err) => {
        console.error('选择图片失败', err);
        Toast({
          context: this,
          selector: '#t-toast',
          message: '选择图片失败',
          icon: 'error-circle',
        });
      }
    });
  },

  // 删除图片
  onDeleteImage(e) {
    const { index } = e.currentTarget.dataset;
    const { images } = this.data;
    images.splice(index, 1);
    this.setData({ images });
  },

  // 预览图片
  onPreviewImage(e) {
    const { index } = e.currentTarget.dataset;
    const { images } = this.data;
    
    wx.previewImage({
      current: images[index],
      urls: images
    });
  },

  // 上传图片到服务器
  async uploadImages(images) {
    const uploadPromises = images.map(imagePath => {
      return new Promise((resolve, reject) => {
        wx.uploadFile({
          url: `${getApp().globalData.config.apiBaseUrl}/upload/image`,
          filePath: imagePath,
          name: 'file',
          header: {
            'Authorization': `Bearer ${wx.getStorageSync('token')}`
          },
          success: (res) => {
            try {
              const data = JSON.parse(res.data);
              if (data.code === 200) {
                resolve(data.data.url);
              } else {
                reject(new Error(data.message || '上传失败'));
              }
            } catch (e) {
              reject(new Error('解析上传结果失败'));
            }
          },
          fail: reject
        });
      });
    });

    return Promise.all(uploadPromises);
  },

  // 提交评论
  async onSubmit() {
    const { orderItem, rating, content, images, isAnonymous, submitting } = this.data;
    
    if (submitting) return;
    
    if (!content.trim()) {
      Toast({
        context: this,
        selector: '#t-toast',
        message: '请输入评论内容',
        icon: 'error-circle',
      });
      return;
    }

    this.setData({ submitting: true });

    try {
      // 上传图片
      let uploadedImages = [];
      if (images.length > 0) {
        Toast({
          context: this,
          selector: '#t-toast',
          message: '正在上传图片...',
          icon: 'loading',
        });
        uploadedImages = await this.uploadImages(images);
      }

      // 提交评论
      const commentData = {
        orderItemId: orderItem.id,
        productId: orderItem.product_id,
        rating,
        content: content.trim(),
        images: uploadedImages,
        isAnonymous
      };

      await createComment(commentData);

      Toast({
        context: this,
        selector: '#t-toast',
        message: '评论提交成功',
        icon: 'check-circle',
      });

      // 设置上一页刷新标志
      const pages = getCurrentPages();
      const prevPage = pages[pages.length - 2]; // 上一页（订单详情页）
      if (prevPage) {
        prevPage.setData({ backRefresh: true });
      }

      // 延迟返回上一页
      setTimeout(() => {
        wx.navigateBack({
          delta: 1
        });
      }, 1500);

    } catch (error) {
      console.error('提交评论失败', error);
      Toast({
        context: this,
        selector: '#t-toast',
        message: error.message || '提交失败，请重试',
        icon: 'error-circle',
      });
    } finally {
      this.setData({ submitting: false });
    }
  },

  // 返回上一页
  onBack() {
    wx.navigateBack();
  }
});