const { config } = require('../../config/index');

/** 获取商品评论 */
function mockFetchComments(parmas) {
  const { delay } = require('../_utils/delay');
  const { getGoodsAllComments } = require('../../model/comments');
  return delay().then(() => getGoodsAllComments(parmas));
}

/** 获取商品评论 */
function fetchComments(params) {
  if (config.useMock) {
    return mockFetchComments(params);
  }
  
  const { productId, page = 1, pageSize = 10, rating, hasImages } = params;
  console.log('[fetchComments] 接收到的参数:', params);
  console.log('[fetchComments] productId:', productId, '类型:', typeof productId);
  
  // 验证productId参数
  if (productId === null || productId === undefined || productId === '' || productId === 'undefined' || productId === 'null') {
    console.error('[fetchComments] 商品ID为空或无效:', productId);
    return Promise.reject(new Error('商品ID不能为空'));
  }
  
  // 确保productId是数字
  const numericProductId = Number(productId);
  console.log('[fetchComments] 转换后的数字ID:', numericProductId);
  
  if (isNaN(numericProductId) || numericProductId <= 0) {
    console.error('[fetchComments] 商品ID不是有效的正整数:', productId, '->', numericProductId);
    return Promise.reject(new Error('商品ID必须是有效的正整数'));
  }
  
  return new Promise((resolve, reject) => {
    wx.request({
      url: `${config.apiBase}/comments/products/${numericProductId}`,
      method: 'GET',
      data: {
        page,
        page_size: pageSize,
        rating,
        has_images: hasImages
      },
      success: (res) => {
        if (res.statusCode === 200 && res.data.code === 200) {
          // 转换数据格式以匹配前端期望的结构
          const result = {
            pageNum: res.data.data.page,
            pageSize: res.data.data.page_size,
            totalCount: res.data.data.total.toString(),
            comments: res.data.data.list.map(comment => ({
              id: comment.id,
              product_id: comment.product_id,
              user_id: comment.user_id,
              user_name: comment.user_name || '匿名用户',
              user_avatar: comment.user_avatar || 'https://tdesign.gtimg.com/miniprogram/template/retail/avatar/avatar1.png',
              rating: comment.rating,
              content: comment.content,
              images: comment.images || [],
              is_anonymous: comment.is_anonymous || false,
              reply_content: comment.reply_content || '',
              created_at: comment.created_at,
              product_spec: comment.product_spec || ''
            }))
          };
          resolve(result);
        } else {
          reject(new Error(res.data.message || '获取评论失败'));
        }
      },
      fail: (err) => {
        reject(err);
      }
    });
  });
}

module.exports = { fetchComments };