/**
 * @description Mock 数据 - 产品中心
 * @note 用于测试滚动加载更多功能
 */

// Mock 分类数据
export const mockCategories = [
  { id: 1, name: '寿险' },
  { id: 2, name: '健康险' },
  { id: 3, name: '意外险' },
  { id: 4, name: '年金险' },
  { id: 5, name: '重疾险' }
]

// Mock 标签数据
const mockTags = [
  { id: 1, name: '热销', bg_color: '#FEF3C7', text_color: '#92400E' },
  { id: 2, name: '新品', bg_color: '#DBEAFE', text_color: '#1E40AF' },
  { id: 3, name: '推荐', bg_color: '#D1FAE5', text_color: '#065F46' },
  { id: 4, name: '限时', bg_color: '#FEE2E2', text_color: '#991B1B' }
]

// 生成单个产品数据
const generateProduct = (id) => {
  const recommendTypes = ['normal', 'hot']
  const recommend = recommendTypes[Math.floor(Math.random() * recommendTypes.length)]

  // 随机选择 1-2 个标签
  const tagCount = Math.floor(Math.random() * 2) + 1
  const tags = []
  for (let i = 0; i < tagCount; i++) {
    const tag = mockTags[Math.floor(Math.random() * mockTags.length)]
    if (!tags.find(t => t.id === tag.id)) {
      tags.push(tag)
    }
  }

  // 随机选择 1-2 个分类
  const categoryCount = Math.floor(Math.random() * 2) + 1
  const categories = []
  for (let i = 0; i < categoryCount; i++) {
    const category = mockCategories[Math.floor(Math.random() * mockCategories.length)]
    if (!categories.find(c => c.id === category.id)) {
      categories.push(category)
    }
  }

  return {
    id: id,
    product_name: `测试产品 ${id} - ${categories.map(c => c.name).join('+')}`,
    recommend: recommend,
    form_sn: `product_form_${id}`,
    created_time: '2025-12-01 12:00:00',
    categories: categories,
    tags: tags,
    // 使用 Lorem Picsum 随机图片服务（基于产品 ID 确保图片固定）
    cover_image: `https://picsum.photos/300/200?random=${id}`
  }
}

// 生成产品列表
const generateProductList = (page, limit, cid = null) => {
  const start = page * limit
  const end = start + limit

  // 如果指定了分类，只返回该分类的产品
  let filteredProducts = []
  if (cid) {
    // 为每个分类生成固定数量的产品
    const categoryProducts = []
    for (let i = 1; i <= 50; i++) {
      const product = generateProduct(i)
      // 强制该产品属于指定分类
      product.categories = mockCategories.find(c => String(c.id) === String(cid))
        ? [mockCategories.find(c => String(c.id) === String(cid))]
        : [{ id: parseInt(cid), name: '测试分类' }]
      categoryProducts.push(product)
    }
    filteredProducts = categoryProducts
  } else {
    // 全部产品
    for (let i = 1; i <= 100; i++) {
      filteredProducts.push(generateProduct(i))
    }
  }

  const total = filteredProducts.length
  const list = filteredProducts.slice(start, end)

  return {
    list,
    total,
    hasMore: end < total
  }
}

/**
 * Mock 产品列表 API
 * @param {Object} params 请求参数
 * @param {string} params.page 页码（从 0 开始）
 * @param {string} params.limit 每页数量
 * @param {string} params.cid 分类 ID（可选）
 * @param {string} params.keyword 搜索关键词（可选）
 * @returns {Promise} 模拟 API 响应
 */
export const mockListAPI = (params) => {
  return new Promise((resolve) => {
    // 模拟网络延迟（300-800ms）
    const delay = Math.floor(Math.random() * 500) + 300

    setTimeout(() => {
      const page = parseInt(params.page) || 0
      const limit = parseInt(params.limit) || 10
      const cid = params.cid || null
      const keyword = params.keyword || ''

      let result = generateProductList(page, limit, cid)

      // 如果有搜索关键词，过滤产品
      if (keyword) {
        result.list = result.list.filter(p =>
          p.product_name.includes(keyword)
        )
        // 搜索时重新计算总数
        result.total = result.list.length + Math.floor(Math.random() * 20)
      }

      resolve({
        code: 1,
        msg: 'success',
        data: {
          categories: mockCategories,
          list: result.list,
          total: result.total
        }
      })
    }, delay)
  })
}

/**
 * Mock 产品详情 API
 * @param {Object} params 请求参数
 * @param {string} params.i 产品 ID
 * @returns {Promise} 模拟 API 响应
 */
export const mockDetailAPI = (params) => {
  return new Promise((resolve) => {
    const delay = Math.floor(Math.random() * 500) + 300

    setTimeout(() => {
      const id = parseInt(params.i) || 1
      const product = generateProduct(id)

      // 添加额外的详情字段
      product.product_description = `这是产品 ${id} 的详细描述。\n\n产品特点：\n1. 保障全面\n2. 灵活配置\n3. 理赔便捷`
      product.documents = [
        {
          file_url: 'https://example.com/file1.pdf',
          file_name: '产品条款.pdf',
          file_size: '1024000',
          file_size_formatted: '1.0 MB'
        },
        {
          file_url: 'https://example.com/file2.pdf',
          file_name: '产品说明.pdf',
          file_size: '512000',
          file_size_formatted: '512 KB'
        }
      ]
      product.status = 'active'
      product.created_by = 1
      product.updated_by = 1
      product.updated_time = '2025-12-01 12:00:00'

      resolve({
        code: 1,
        msg: 'success',
        data: product
      })
    }, delay)
  })
}