import React, { Component } from 'react';
import { View, Text, Dimensions, StatusBar, ScrollView, BackHandler, TouchableOpacity, StyleSheet } from 'react-native';
import Share from 'react-native-share';
import {
  BlueLoading,
  BlueText,
  SafeBlueArea,
  BlueButton,
  SecondButton,
  BlueCopyTextToClipboard,
  BlueNavigationStyle,
  BlueSpacing20,
  BlueBigCheckmark,
} from '../../BlueComponents';
import PropTypes from 'prop-types';
import ReactNativeHapticFeedback from 'react-native-haptic-feedback';
import { Icon } from 'react-native-elements';
import QRCode from 'react-native-qrcode-svg';
import loc from '../../loc';
import { BlueCurrentTheme } from '../../components/themes';
import { BlueStorageContext } from '../../blue_modules/storage-context';
const { width, height } = Dimensions.get('window');

const styles = StyleSheet.create({
  root: {
    flex: 1,
    backgroundColor: BlueCurrentTheme.colors.background,
  },
  center: {
    flex: 1,
    justifyContent: 'center',
    alignItems: 'center',
  },
  qrCodeContainer: { borderWidth: 6, borderRadius: 8, borderColor: '#FFFFFF' },
  valueRoot: {
    flex: 2,
    flexDirection: 'column',
    justifyContent: 'center',
  },
  valueAmount: {
    flexDirection: 'row',
    justifyContent: 'center',
    paddingBottom: 8,
  },
  valueText: {
    color: BlueCurrentTheme.colors.alternativeTextColor2,
    fontSize: 32,
    fontWeight: '600',
  },
  valueSats: {
    color: BlueCurrentTheme.colors.alternativeTextColor2,
    fontSize: 16,
    marginHorizontal: 4,
    paddingBottom: 3,
    fontWeight: '600',
    alignSelf: 'flex-end',
  },
  memo: {
    color: '#9aa0aa',
    fontSize: 14,
    marginHorizontal: 4,
    paddingBottom: 6,
    fontWeight: '400',
    alignSelf: 'center',
  },
  paid: {
    flex: 3,
    alignItems: 'center',
    justifyContent: 'center',
  },
  paidMark: {
    marginTop: -100,
    marginBottom: 16,
    backgroundColor: BlueCurrentTheme.colors.success,
  },
  detailsRoot: {
    flex: 1,
    justifyContent: 'flex-end',
    marginBottom: 24,
    alignItems: 'center',
  },
  detailsTouch: {
    flexDirection: 'row',
    alignItems: 'center',
  },
  detailsText: {
    color: BlueCurrentTheme.colors.alternativeTextColor,
    fontSize: 14,
    marginRight: 8,
  },
  expired: {
    backgroundColor: BlueCurrentTheme.colors.success,
    width: 120,
    height: 120,
    borderRadius: 60,
    alignSelf: 'center',
    justifyContent: 'center',
    marginTop: -100,
    marginBottom: 30,
  },
  activeRoot: {
    flex: 1,
    alignItems: 'center',
    marginTop: 8,
    justifyContent: 'space-between',
  },
  activeQrcode: {
    flex: 1,
    alignItems: 'center',
    justifyContent: 'center',
    marginHorizontal: 16,
    borderWidth: 6,
    borderRadius: 8,
    borderColor: '#FFFFFF',
  },
  additionalInfo: {
    backgroundColor: BlueCurrentTheme.colors.brandingColor,
  },
});

export default class LNDViewInvoice extends Component {
  static contextType = BlueStorageContext;
  constructor(props) {
    super(props);
    const invoice = props.route.params.invoice;
    const fromWallet = props.route.params.fromWallet;
    this.state = {
      invoice,
      fromWallet,
      isLoading: typeof invoice === 'string',
      addressText: typeof invoice === 'object' && 'payment_request' in invoice ? invoice.payment_request : invoice,
      isFetchingInvoices: true,
      qrCodeHeight: height > width ? width - 20 : width / 2,
    };
    this.fetchInvoiceInterval = undefined;
    BackHandler.addEventListener('hardwareBackPress', this.handleBackButton);
  }

  componentDidMount() {
    console.log('LNDViewInvoice - componentDidMount');
    this.fetchInvoiceInterval = setInterval(async () => {
      if (this.state.isFetchingInvoices) {
        try {
          const userInvoices = await this.state.fromWallet.getUserInvoices(20);
          // fetching only last 20 invoices
          // for invoice that was created just now - that should be enough (it is basically the last one, so limit=1 would be sufficient)
          // but that might not work as intended IF user creates 21 invoices, and then tries to check the status of invoice #0, it just wont be updated
          const updatedUserInvoice = userInvoices.filter(invoice =>
            typeof this.state.invoice === 'object'
              ? invoice.payment_request === this.state.invoice.payment_request
              : invoice.payment_request === this.state.invoice,
          )[0];
          if (typeof updatedUserInvoice !== 'undefined') {
            this.setState({ invoice: updatedUserInvoice, isLoading: false, addressText: updatedUserInvoice.payment_request });
            if (updatedUserInvoice.ispaid) {
              // we fetched the invoice, and it is paid :-)
              this.setState({ isFetchingInvoices: false });
              ReactNativeHapticFeedback.trigger('notificationSuccess', { ignoreAndroidSystemSettings: false });
              clearInterval(this.fetchInvoiceInterval);
              this.fetchInvoiceInterval = undefined;
              this.context.fetchAndSaveWalletTransactions(this.state.fromWallet.getID());
            } else {
              const currentDate = new Date();
              const now = (currentDate.getTime() / 1000) | 0;
              const invoiceExpiration = updatedUserInvoice.timestamp + updatedUserInvoice.expire_time;
              if (invoiceExpiration < now && !updatedUserInvoice.ispaid) {
                // invoice expired :-(
                this.context.fetchAndSaveWalletTransactions(this.state.fromWallet.getID());
                this.setState({ isFetchingInvoices: false });
                ReactNativeHapticFeedback.trigger('notificationError', { ignoreAndroidSystemSettings: false });
                clearInterval(this.fetchInvoiceInterval);
                this.fetchInvoiceInterval = undefined;
              }
            }
          }
        } catch (error) {
          console.log(error);
        }
      }
    }, 3000);
  }

  async componentWillUnmount() {
    clearInterval(this.fetchInvoiceInterval);
    this.fetchInvoiceInterval = undefined;
    BackHandler.removeEventListener('hardwareBackPress', this.handleBackButton);
  }

  handleBackButton = () => {
    this.props.navigation.goBack(null);
    return true;
  };

  onLayout = () => {
    const { height } = Dimensions.get('window');
    this.setState({ qrCodeHeight: height > width ? width - 20 : width / 2 });
  };

  render() {
    if (this.state.isLoading) {
      return (
        <View style={styles.root}>
          <BlueLoading />
        </View>
      );
    }

    const { invoice } = this.state;
    if (typeof invoice === 'object') {
      const currentDate = new Date();
      const now = (currentDate.getTime() / 1000) | 0;
      const invoiceExpiration = invoice.timestamp + invoice.expire_time;

      if (this.state.showPreimageQr) {
        return (
          <SafeBlueArea style={styles.root}>
            <StatusBar barStyle="default" />
            <View style={styles.center}>
              <BlueText>{loc.lndViewInvoice.preimage}:</BlueText>
              <BlueSpacing20 />
              <View style={styles.qrCodeContainer}>
                <QRCode
                  value={invoice.payment_preimage && typeof invoice.payment_preimage === 'string' ? invoice.payment_preimage : 'none'}
                  logo={require('../../img/qr-code.png')}
                  size={this.state.qrCodeHeight}
                  logoSize={90}
                  color="#000000"
                  logoBackgroundColor={BlueCurrentTheme.colors.brandingColor}
                  backgroundColor="#FFFFFF"
                />
              </View>
              <BlueSpacing20 />
              <BlueCopyTextToClipboard
                text={invoice.payment_preimage && typeof invoice.payment_preimage === 'string' ? invoice.payment_preimage : 'none'}
              />
            </View>
          </SafeBlueArea>
        );
      }

      if (invoice.ispaid || invoice.type === 'paid_invoice') {
        return (
          <SafeBlueArea style={styles.root}>
            <StatusBar barStyle="default" />
            <View style={styles.valueRoot}>
              {invoice.type === 'paid_invoice' && invoice.value && (
                <View style={styles.valueAmount}>
                  <Text style={styles.valueText}>{invoice.value}</Text>
                  <Text style={styles.valueSats}>{loc.lndViewInvoice.sats}</Text>
                </View>
              )}
              {invoice.type === 'user_invoice' && invoice.amt && (
                <View style={styles.valueAmount}>
                  <Text style={styles.valueText}>{invoice.amt}</Text>
                  <Text style={styles.valueSats}>{loc.lndViewInvoice.sats}</Text>
                </View>
              )}
              {!invoice.ispaid && invoice.memo && invoice.memo.length > 0 && <Text style={styles.memo}>{invoice.memo}</Text>}
            </View>

            <View style={styles.paid}>
              <BlueBigCheckmark style={styles.paidMark} />
              <BlueText>{loc.lndViewInvoice.has_been_paid}</BlueText>
            </View>
            <View style={styles.detailsRoot}>
              {invoice.payment_preimage && typeof invoice.payment_preimage === 'string' ? (
                <TouchableOpacity style={styles.detailsTouch} onPress={() => this.setState({ showPreimageQr: true })}>
                  <Text style={styles.detailsText}>{loc.send.create_details}</Text>
                  <Icon name="angle-right" size={18} type="font-awesome" color={BlueCurrentTheme.colors.alternativeTextColor} />
                </TouchableOpacity>
              ) : (
                <View />
              )}
            </View>
          </SafeBlueArea>
        );
      }
      if (invoiceExpiration < now && !invoice.ispaid) {
        return (
          <SafeBlueArea style={styles.root}>
            <StatusBar barStyle="default" />
            <View style={styles.center}>
              <View style={styles.expired}>
                <Icon name="times" size={50} type="font-awesome" color={BlueCurrentTheme.colors.successCheck} />
              </View>
              <BlueText>{loc.lndViewInvoice.wasnt_paid_and_expired}</BlueText>
            </View>
          </SafeBlueArea>
        );
      } else if (invoiceExpiration > now && invoice.ispaid) {
        if (invoice.ispaid) {
          return (
            <SafeBlueArea style={styles.root}>
              <View style={styles.center}>
                <BlueText>{loc.lndViewInvoice.has_been_paid}</BlueText>
              </View>
            </SafeBlueArea>
          );
        }
      }
    }
    // Invoice has not expired, nor has it been paid for.
    return (
      <SafeBlueArea>
        <StatusBar barStyle="default" />
        <ScrollView>
          <View style={styles.activeRoot} onLayout={this.onLayout}>
            <View style={styles.activeQrcode}>
              <QRCode
                value={typeof this.state.invoice === 'object' ? invoice.payment_request : invoice}
                logo={require('../../img/qr-code.png')}
                size={this.state.qrCodeHeight}
                logoSize={90}
                color="#000000"
                logoBackgroundColor={BlueCurrentTheme.colors.brandingColor}
                backgroundColor="#FFFFFF"
              />
            </View>

            <BlueSpacing20 />
            <BlueText>
              {loc.lndViewInvoice.please_pay} {invoice.amt} {loc.lndViewInvoice.sats}
            </BlueText>
            {invoice && 'description' in invoice && invoice.description.length > 0 && (
              <BlueText>
                {loc.lndViewInvoice.for} {invoice.description}
              </BlueText>
            )}
            <BlueCopyTextToClipboard text={this.state.invoice.payment_request} />

            <SecondButton
              onPress={() => {
                Share.open({ message: `lightning:${invoice.payment_request}` }).catch(error => console.log(error));
              }}
              title={loc.receive.details_share}
            />
            <BlueSpacing20 />
            <BlueButton
              style={styles.additionalInfo}
              onPress={() => this.props.navigation.navigate('LNDViewAdditionalInvoiceInformation', { fromWallet: this.state.fromWallet })}
              title={loc.lndViewInvoice.additional_info}
            />
          </View>
          <BlueSpacing20 />
        </ScrollView>
      </SafeBlueArea>
    );
  }
}

LNDViewInvoice.propTypes = {
  navigation: PropTypes.shape({
    goBack: PropTypes.func,
    navigate: PropTypes.func,
    popToTop: PropTypes.func,
  }),
  route: PropTypes.shape({
    params: PropTypes.object,
  }),
};

LNDViewInvoice.navigationOptions = ({ navigation, route }) =>
  route.params.isModal === true
    ? {
        ...BlueNavigationStyle(navigation, true, () => navigation.dangerouslyGetParent().pop()),
        title: 'Lightning Invoice',
        headerLeft: null,
        headerStyle: {
          backgroundColor: BlueCurrentTheme.colors.customHeader,
        },
      }
    : {
        ...BlueNavigationStyle(),
        title: 'Lightning Invoice',
        headerStyle: {
          backgroundColor: BlueCurrentTheme.colors.customHeader,
        },
      };