// pages/customer/index.js
const API = require('../../utils/api.js')

// 性别映射
const SEX_MAP = {
  male: { label: '男', text: '先生' },
  female: { label: '女', text: '女士' },
  other: { label: '其他', text: '' },
  '': { label: '未知', text: '' }
}

Page({
  data: {
    // 搜索相关
    searchKey: '',
    // 客户列表
    customerList: [],
    // 分页
    page: 1,
    pageSize: 10,
    hasMore: true,
    // 加载状态
    isLoading: false,
    isLoadingMore: false,
    isRefreshing: false,
    // 统计数据
    stats: {
      total: 0,
      male: 0,
      female: 0
    }
  },

  onLoad(options) {
    this.loadCustomerList();
  },

  onShow() {
    // 页面显示时如果已有数据则刷新
    if (this.data.customerList.length > 0) {
      this.refreshData();
    }
  },

  /**
   * 格式化日期
   */
  formatDate(dateStr) {
    if (!dateStr) return '';
    const date = new Date(dateStr);
    const year = date.getFullYear();
    const month = String(date.getMonth() + 1).padStart(2, '0');
    const day = String(date.getDate()).padStart(2, '0');
    return `${year}-${month}-${day}`;
  },

  /**
   * 处理客户数据
   */
  processCustomers(customers) {
    return customers.map(customer => {
      const profile = customer.profile || {};
      const sexInfo = SEX_MAP[profile.sex] || SEX_MAP[''];
      return {
        ...customer,
        name: profile.name || '未知姓名',
        mobile: profile.mobile || '暂无电话',
        sex: profile.sex || '',
        sexLabel: sexInfo.label,
        sexText: sexInfo.text,
        avatar: profile.avatar || '',
        avatarText: profile.name ? profile.name[0].toUpperCase() : '客',
        birth: profile.birth ? this.formatDate(profile.birth) : '',
        createdAt: customer.meta?.createtime ? this.formatDate(customer.meta.createtime) : '',
        locationText: this.getLocationText(customer)
      };
    });
  },

  /**
   * 获取位置文本
   */
  getLocationText(customer) {
    const location = customer.location || {};
    if (location.province || location.city) {
      return `${location.province || ''}${location.city || ''}`;
    }
    return '';
  },

  /**
   * 计算统计数据
   */
  calculateStats(customers) {
    const stats = {
      total: customers.length,
      male: 0,
      female: 0
    };

    customers.forEach(customer => {
      const sex = customer.profile?.sex || '';
      if (sex === 'male') stats.male++;
      else if (sex === 'female') stats.female++;
    });

    return stats;
  },

  /**
   * 加载客户列表
   */
  loadCustomerList(isRefresh = false) {
    if (this.data.isLoading || this.data.isLoadingMore) return;

    const { page, pageSize, searchKey } = this.data;
    this.setData({
      isLoading: !isRefresh && page === 1,
      isLoadingMore: isRefresh && page > 1
    });

    const params = {
      page,
      pageSize
    };

    if (searchKey && searchKey.trim()) {
      params.keyword = searchKey.trim();
    }

    API.user.userList(params)
      .then(res => {
        if (res.code !== 0) {
          wx.showToast({ title: res.message || '获取客户列表失败', icon: 'none' });
          this.setData({ isLoading: false, isLoadingMore: false, isRefreshing: false });
          return;
        }

        const data = res.data || {};
        const list = data.users || [];
        const total = data?.users?.length || 0;

        const processedCustomers = this.processCustomers(list);

        let allCustomers = isRefresh && page > 1
          ? [...this.data.customerList, ...processedCustomers]
          : processedCustomers;

        // 如果有搜索条件，在前端过滤
        if (searchKey && searchKey.trim()) {
          const keyword = searchKey.trim().toLowerCase();
          allCustomers = allCustomers.filter(customer => {
            return customer.name.toLowerCase().includes(keyword) ||
                   customer.mobile.includes(keyword);
          });
        }

        const stats = this.calculateStats(allCustomers);

        this.setData({
          customerList: allCustomers,
          stats,
          isLoading: false,
          isLoadingMore: false,
          isRefreshing: false,
          hasMore: allCustomers.length < total
        });
      })
      .catch(err => {
        console.error('获取客户列表失败', err);
        wx.showToast({ title: '网络错误，请重试', icon: 'none' });
        this.setData({ isLoading: false, isLoadingMore: false, isRefreshing: false });
      });
  },

  /**
   * 刷新数据
   */
  refreshData() {
    this.setData({ page: 1, hasMore: true }, () => {
      this.loadCustomerList();
    });
  },

  /**
   * 搜索输入
   */
  onSearchInput(e) {
    this.setData({ searchKey: e.detail.value });
  },

  /**
   * 搜索确认
   */
  onSearch() {
    this.setData({ page: 1, hasMore: true, customerList: [] }, () => {
      this.loadCustomerList();
    });
  },

  /**
   * 清除搜索
   */
  onClearSearch() {
    if (this.data.searchKey) {
      this.setData({ searchKey: '', page: 1, hasMore: true, customerList: [] }, () => {
        this.loadCustomerList();
      });
    }
  },

  /**
   * 客户详情
   */
  onCustomerDetail(e) {
    const { id } = e.currentTarget.dataset;
    wx.navigateTo({
      url: `/pages/customer/detail?id=${id}`
    });
  },

  /**
   * 拨打电话
   */
  onCallPhone(e) {
    const { phone } = e.currentTarget.dataset;
    if (!phone) {
      wx.showToast({ title: '暂无电话号码', icon: 'none' });
      return;
    }
    wx.makePhoneCall({
      phoneNumber: phone,
      fail: () => {
        wx.showToast({ title: '拨打电话失败', icon: 'none' });
      }
    });
  },

  /**
   * 下拉刷新
   */
  onPullDownRefresh() {
    this.setData({ isRefreshing: true, page: 1, hasMore: true }, () => {
      this.loadCustomerList();
    });
    wx.stopPullDownRefresh();
  },

  /**
   * 上拉加载更多
   */
  onReachBottom() {
    if (!this.data.hasMore || this.data.isLoadingMore) return;

    this.setData({ page: this.data.page + 1 }, () => {
      this.loadCustomerList(true);
    });
  },

  /**
   * 用户点击右上角分享
   */
  onShareAppMessage() {
    return {
      title: '客户管理',
      path: '/pages/customer/index'
    };
  }
});