import React, {Component} from 'react';
import {
  View,
  Image,
  Text,
  Dimensions,
  FlatList,
  RefreshControl,
  ActivityIndicator,
  DeviceEventEmitter,
} from 'react-native';
import {List, SearchBar, SwipeAction} from '@ant-design/react-native';

import {RetrieveData} from '../../data/storage';
import {GetDataPost} from '../../data/encryption';
import {ShowToast} from '../../components/rootToast/root_toast';
import customer_css from './customer_css';

let pageNo = 1; //当前第几页
let totalPage = 5; //总的页数
export default class customer_information extends Component {
  constructor(props) {
    super(props);
    this.props.navigation.dangerouslyGetParent().setOptions({
      tabBarVisible: false,
    });
    this.state = {
      listData: [],
      search_data: '',
      showFoot: 0, // 控制foot， 0：隐藏footer  1：已加载完成,没有更多数据   2 ：显示加载中
      isLoading: false,
    };
  }
  render() {
    return (
      <View style={{flex: 1, backgroundColor: '#ffffff'}}>
        <View
          style={{
            width: Dimensions.get('window').width,
            alignItems: 'center',
            justifyContent: 'center',
            backgroundColor: '#ffffff',
            height: 50,
          }}>
          <SearchBar
            placeholder="搜索"
            value={this.state.search_data}
            // onSubmit={value => Alert.alert(value)}
            onCancel={() => this.searchClear()}
            onChange={(value) => this.searchData(value)}
            showCancelButton={false}
            style={{borderRadius: 15}}
          />
        </View>
        <View style={customer_css.container}>
          <FlatList
            data={this.state.listData}
            renderItem={item => this.renderItem(item)}
            refreshControl={
              <RefreshControl
                title={'加载中...'}
                colors={['#B7B7B7']} //此颜色无效
                tintColor={'#B7B7B7'}
                titleColor={'#B7B7B7'} //只有ios有效
                refreshing={this.state.isLoading}
                onRefresh={() => {
                  this.initData();
                }}
              />
            }
            ListFooterComponent={this._renderFooter.bind(this)}
            onEndReached={this._onEndReached.bind(this)}
            onEndReachedThreshold={0.1}
          />
        </View>
      </View>
    );
  }
  //搜索数据
  searchData = value => {
    this.setState({
      search_data: value,
    });
    this.timer = setTimeout(() => {
      this.initData();
    }, 1000);
  };

  //清空搜索
  searchClear = () => {
    this.setState({
      search_data: '',
    });
    this.initData();
  };

  //数据初始化
  initData = () => {
    this.setState({
      listData: [],
      isLoading: false,
      showFoot: 0,
    });
    pageNo = 1;
    this.getCustomerData();
  };

  //上拉加载
  _onEndReached() {
    if (this.state.showFoot === 0) {
      if (pageNo >= totalPage) {
        this.setState({showFoot: 1});
        return;
      } else {
        pageNo++;
        this.setState({showFoot: 2});
        //获取数据
        this.getCustomerData();
      }
    }
  }

  //显示list尾部
  _renderFooter() {
    if (this.state.showFoot === 1) {
      return (
        <View
          style={{
            height: 30,
            alignItems: 'center',
            justifyContent: 'flex-start',
          }}>
          <Text
            style={{
              color: '#999999',
              fontSize: 14,
              marginTop: 5,
              marginBottom: 5,
            }}>
            没有更多数据了
          </Text>
        </View>
      );
    } else if (this.state.showFoot === 2) {
      return (
        <View style={customer_css.footer}>
          <ActivityIndicator />
          <Text>正在加载更多数据...</Text>
        </View>
      );
    } else if (this.state.showFoot === 0) {
      return (
        <View style={customer_css.footer}>
          <Text />
        </View>
      );
    }
  }

  //显示页面加载
  componentDidMount(): void {
    this.getCustomerData();
    //收到监听
    this.listener = DeviceEventEmitter.addListener('刷新列表', (message) => {
      //收到监听后想做的事情
      this.initData();
    });
  }

  //关闭页面加载
  componentWillUnmount(): void {
    pageNo = 1;
    this.timer && clearTimeout(this.timer);
    //移除监听
    if (this.listener) {
      this.listener.remove();
    }
  }

  //获取客户数据
  getCustomerData = async () => {
    let account = await RetrieveData('account');
    let token = await RetrieveData('token');
    if (token && account) {
      account = account.substring(1, account.length - 1);
      token = token.substring(1, token.length - 1);
      const url = '/sys/customer/findPage';
      GetDataPost(
        url,
        token,
        {
          mobile: account,
          reqChannel: 3,
          pageNum: pageNo,
          pageSize: 10,
          customerName: this.state.search_data,
        },
        false,
        2,
      ).then(res => {
        totalPage = res.data.pages;
        this.setList(res.data.records);
      });
    }
  };

  //删除客户数据
  deleteData = async data => {
    let account = await RetrieveData('account');
    let token = await RetrieveData('token');
    if (account && token) {
      account = account.substring(1, account.length - 1);
      token = token.substring(1, token.length - 1);
      const url = '/sys/customer/delete';
      GetDataPost(
        url,
        token,
        {
          mobile: account,
          reqChannel: 3,
          ip: '192.168.0.12',
          delList: [
            {
              customerId: data.key,
              // customerCode: data.customerCode,
              manageUserId: data.manageUserId,
            },
          ],
        },
        false,
        1,
      )
        .then(res => {
          if (res) {
            if (res.code === 0) {
              ShowToast('删除成功');
              this.initData();
            } else {
              ShowToast('删除失败');
            }
          } else {
            ShowToast('删除失败');
          }
        })
        .catch(err => {
          ShowToast('删除失败');
        });
    }
  };

  //设置客户数据列表
  setList = data => {
    let listDatas = data.map((_, i) => ({
      key: data[i].customerId,
      customerName: data[i].customerName,
      entTaxId: data[i].entTaxId,
      customerMobile: data[i].customerMobile,
      manageUserId: data[i].manageUserId,
    }));
    let list = this.state.listData.concat(listDatas);
    this.setState({
      listData: list,
      showFoot: 0,
    });
  };

  //加载客户列表数据
  renderItem = data => (
    <SwipeAction
      autoClose
      style={{backgroundColor: 'transparent'}}
      right={this.right(data)}>
      <List.Item
        onPress={() => {
          this.props.navigation.navigate('customer_see', {
            companyId: data.item.key,
          });
        }}>
        <View style={{flex: 1}}>
          <View style={{flexDirection: 'row', alignItems: 'center'}}>
            <Image
              source={require('../../source/img/customer/company.png')}
              style={{width: 21, height: 19}}
            />
            <Text
              style={{
                fontSize: 18,
                fontFamily: 'PingFang-SC-Regular',
                color: '#333333',
              }}>
              {data.item.customerName}
            </Text>
          </View>
          <View style={{flexDirection: 'row', alignItems: 'center'}}>
            <Image
              source={require('../../source/img/customer/companyEnt.png')}
              style={{width: 21, height: 19}}
            />
            <Text
              style={{
                fontSize: 18,
                fontFamily: 'PingFang-SC-Regular',
                color: '#333333',
              }}>
              {data.item.entTaxId}
            </Text>
          </View>
          <View style={{flexDirection: 'row', alignItems: 'center'}}>
            <Image
              source={require('../../source/img/customer/phone.png')}
              style={{width: 21, height: 19}}
            />
            <Text
              style={{
                fontSize: 18,
                fontFamily: 'PingFang-SC-Regular',
                color: '#333333',
              }}>
              {data.item.customerMobile}
            </Text>
          </View>
        </View>
      </List.Item>
    </SwipeAction>
  );

  //显示侧滑按钮
  right = data => [
    {
      text: '编辑',
      onPress: () =>
        this.props.navigation.navigate('customer_edit', {
          companyId: data.item.key,
        }),
      style: {backgroundColor: 'orange', color: 'white'},
    },
    {
      text: '删除',
      onPress: () => {
        this.deleteData(data.item);
      },
      style: {backgroundColor: 'red', color: 'white'},
    },
  ];
}