import React, { Component } from 'react';
import { View, Text, StyleSheet, RefreshControl, FlatList, Pressable } from 'react-native';
import VoucherType from './VoucherType';
import apiVoucher from '../../api/apiVoucher';
import { MyRefreshProps } from '../../components/ThemesConfig';
import TextView from '../../components/TextView';
import BadgeSelectItem from '../../components/BadgeSelectItem';
import Button from '../../components/Button';
import PagerUtil from '../chargeV2/PagerUtil';

export default class VoucherSelect extends Component {
  constructor(props) {
    super(props);
    this.state = {
      dataList: [],
      voucherType: "",
      hasMore: true,
      refreshing: false,
      selectedVoucher: {}
    };
    this.params = {
      chargeBoxId: "",
      connectorId: ""
    }
  }

  componentDidMount() {
    const params = this.props.route.params;
    if (params.chargeBoxId) {
      this.params.chargeBoxId = params.chargeBoxId
    }
    if (params.connectorId) {
      this.params.connectorId = params.connectorId
    }
    console.log("选择优惠券", this.params);
    this.getDataList();
    this.props.navigation.addListener('beforeRemove', (e) => {
      PagerUtil.setSelectedVoucher(this.state.selectedVoucher);
    });
  }

  onRefresh() {
    this.setState({
      refreshing: true
    })
    this.getDataList();
  }

  getDataList(lastId) {
    apiVoucher.getSelectionVoucher({
      ...this.params,
      voucherType: this.state.voucherType
    }).then(res => {
      if (res.data) {
        if (lastId) {
          if (res.data.length > 0) {
            const list = this.state.dataList;
            this.setState({
              dataList: list.concat(res.data),
              hasMore: true
            });
          } else {
            this.setState({
              hasMore: false
            })
          }
        } else {
          this.setState({
            dataList: res.data,
            hasMore: res.data.length == 0
          });
        }
      } else {
        this.setState({
          dataList: [],
          hasMore: true
        });
      }
    }).catch(err => {
      toastShort(err)
      this.setState({
        dataList: [],
        hasMore: true
      });
    }).finally(() => {
      this.setState({
        refreshing: false,
        selectedVoucher: {}
      });
    });
  }

  getDataListPage() {
    if (this.state.dataList.length > 0 && this.state.hasMore) {
      const last = this.state.dataList[this.state.dataList.length-1]
      this.getDataList(last.voucherId);
    }
  }

  getColorByStatus(status) {
    let color = colorAccent;
    switch (status) {
      case "Used":
      case "Expired":
        color = "#434343";
        break;
      case "Expiring":
        color = "#ED3F3F"
        break;
    }
    return color;
  }

  changeType(type) {
    this.setState({
      voucherType: type
    });
    this.getDataList();
  }

  onSetectVoucher(item) {
    if (item.userVoucherId != this.state.selectedVoucher.userVoucherId) {
      this.setState({
        selectedVoucher: item
      })
    } else {
      this.setState({
        selectedVoucher: {}
      })
    }
  }

  listItem = ({item, index, separators}) => {
    return (
      <BadgeSelectItem
        style={styles.itemView}
        borderColor='#DADADA'
        checked={this.state.selectedVoucher.userVoucherId == item.userVoucherId}
        onPress={() => this.onSetectVoucher(item)}>
        <View style={styles.itemContent}>
          <TextView style={styles.voucherTitle}>{item.voucherName}</TextView>
          <TextView style={styles.voucherDesc}>{item.voucherDesc}</TextView>
          <TextView style={styles.expireDate}>{$t("voucher.expiresOn") + item.expiresOn}</TextView>
        </View>
        <TextView
          style={[
            styles.statusButton, {
              color: this.getColorByStatus(item.userVoucherStatus),
              borderColor: this.getColorByStatus(item.userVoucherStatus)
            }
          ]}>
          {item.userVoucherStatus}
        </TextView>
      </BadgeSelectItem>
    )
  }

  topView = (props) => {
    return (
      <VoucherType
        type={this.state.voucherType}
        onChange={type => this.changeType(type)}
      />
    );
  }

  bottomView = () => {
    if (!this.state.hasMore) {
      return (<Text style={styles.noMore}>{$t('voucher.noMore')}</Text>)
    } else {
      return null
    }
  }

  render() {
    return (
      <View style={styles.container}>
        <FlatList
          style={ui.flex1}
          data={this.state.dataList}
          renderItem={this.listItem}
          ListHeaderComponent={this.topView}
          keyExtractor={item => item.userVoucherId}
          onEndReached={() => this.getDataListPage()}
          onEndReachedThreshold={0.3}
          ListEmptyComponent={<Text style={styles.noData}>{$t('voucher.noData')}</Text>}
          ListFooterComponent={this.bottomView}
          refreshControl={
            <RefreshControl
              {...MyRefreshProps()}
              refreshing={this.state.refreshing}
              onRefresh={() => this.onRefresh()}
            />
          }/>
        <Button
          text={$t("nav.confirm")}
          borderRadius={6}
          onClick={() => goBack()}
        />
      </View>
    );
  }
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    paddingLeft: 16,
    paddingRight: 16,
    paddingBottom: 16
  },
  itemView: {
    padding: 16,
    marginTop: 16,
    borderWidth: 1,
    borderColor: '#DADADA',
    borderRadius: 4,
    alignItems: 'center',
    flexDirection: 'row',
    backgroundColor: colorLight
  },
  itemContent: {
    flex: 1,
    paddingRight: 16
  },
  voucherTitle: {
    color: textPrimary,
    fontSize: 16,
    fontWeight: 'bold'
  },
  voucherDesc: {
    color: textPrimary,
    fontSize: 14,
    paddingTop: 2,
    paddingBottom: 4
  },
  expireDate: {
    color: textCancel,
    fontSize: 12
  },
  statusButton: {
    color: colorAccent,
    padding: 8,
    minWidth: 73,
    fontSize: 12,
    textAlign: 'center',
    borderWidth: 1,
    borderColor: colorAccent,
    borderRadius: 6,
    textTransform: 'uppercase',
    backgroundColor: colorLight
  },
  noData: {
    color: textPlacehoder,
    fontSize: 14,
    padding: 20,
    marginTop: 16,
    textAlign: 'center'
  },
  noMore: {
    color: textPlacehoder,
    fontSize: 14,
    padding: 16,
    textAlign: 'center'
  }
})