/* global alert */
import React, { Component } from 'react';
import { Chain } from '../../models/bitcoinUnits';
import {
  Text,
  Platform,
  StyleSheet,
  View,
  Keyboard,
  ActivityIndicator,
  InteractionManager,
  FlatList,
  RefreshControl,
  TouchableOpacity,
  StatusBar,
  Linking,
  KeyboardAvoidingView,
} from 'react-native';
import PropTypes from 'prop-types';
import { NavigationEvents } from 'react-navigation';
import {
  BlueSendButtonIcon,
  BlueListItem,
  BlueReceiveButtonIcon,
  BlueTransactionListItem,
  BlueWalletNavigationHeader,
} from '../../BlueComponents';
import { Icon } from 'react-native-elements';
import { LightningCustodianWallet } from '../../class';
import Handoff from 'react-native-handoff';
import { ScrollView } from 'react-native-gesture-handler';
import Modal from 'react-native-modal';
import NavigationService from '../../NavigationService';
/** @type {AppStorage} */
let BlueApp = require('../../BlueApp');
let loc = require('../../loc');
let EV = require('../../events');
let BlueElectrum = require('../../BlueElectrum');

export default class WalletTransactions extends Component {
  static navigationOptions = ({ navigation }) => {
    return {
      headerRight: (
        <TouchableOpacity
          disabled={navigation.getParam('isLoading') === true}
          style={{ marginHorizontal: 16, minWidth: 150, justifyContent: 'center', alignItems: 'flex-end' }}
          onPress={() =>
            navigation.navigate('WalletDetails', {
              wallet: navigation.state.params.wallet,
            })
          }
        >
          <Icon name="kebab-horizontal" type="octicon" size={22} color="#FFFFFF" />
        </TouchableOpacity>
      ),
      headerStyle: {
        backgroundColor: navigation.getParam('headerColor'),
        borderBottomWidth: 0,
        elevation: 0,
        shadowRadius: 0,
      },
      headerTintColor: '#FFFFFF',
    };
  };

  walletBalanceText = null;

  constructor(props) {
    super(props);

    // here, when we receive REMOTE_TRANSACTIONS_COUNT_CHANGED we fetch TXs and balance for current wallet
    EV(EV.enum.REMOTE_TRANSACTIONS_COUNT_CHANGED, this.refreshTransactionsFunction.bind(this));
    const wallet = props.navigation.getParam('wallet');
    this.props.navigation.setParams({ wallet: wallet, isLoading: true });
    this.state = {
      isLoading: true,
      isManageFundsModalVisible: false,
      showShowFlatListRefreshControl: false,
      wallet: wallet,
      dataSource: this.getTransactions(15),
      limit: 15,
      pageSize: 20,
    };
  }

  componentDidMount() {
    this.props.navigation.setParams({ isLoading: false });
  }

  /**
   * Forcefully fetches TXs and balance for wallet
   */
  refreshTransactionsFunction() {
    let that = this;
    setTimeout(function() {
      that.refreshTransactions();
    }, 4000); // giving a chance to remote server to propagate
  }

  /**
   * Simple wrapper for `wallet.getTransactions()`, where `wallet` is current wallet.
   * Sorts. Provides limiting.
   *
   * @param limit {Integer} How many txs return, starting from the earliest. Default: all of them.
   * @returns {Array}
   */
  getTransactions(limit = Infinity) {
    let wallet = this.props.navigation.getParam('wallet');
    let txs = wallet.getTransactions();
    for (let tx of txs) {
      tx.sort_ts = +new Date(tx.received);
    }
    txs = txs.sort(function(a, b) {
      return b.sort_ts - a.sort_ts;
    });
    return txs.slice(0, limit);
  }

  redrawScreen() {
    InteractionManager.runAfterInteractions(async () => {
      console.log('wallets/transactions redrawScreen()');

      this.setState({
        isLoading: false,
        showShowFlatListRefreshControl: false,
        dataSource: this.getTransactions(this.state.limit),
      });
    });
  }

  isLightning() {
    let w = this.state.wallet;
    if (w && w.type === LightningCustodianWallet.type) {
      return true;
    }

    return false;
  }

  /**
   * Forcefully fetches TXs and balance for wallet
   */
  refreshTransactions() {
    if (this.state.isLoading) return;
    this.setState(
      {
        showShowFlatListRefreshControl: true,
        isLoading: true,
      },
      async () => {
        let noErr = true;
        let smthChanged = false;
        try {
          await BlueElectrum.ping();
          await BlueElectrum.waitTillConnected();
          /** @type {LegacyWallet} */
          let wallet = this.state.wallet;
          let balanceStart = +new Date();
          const oldBalance = wallet.getBalance();
          await wallet.fetchBalance();
          if (oldBalance !== wallet.getBalance()) smthChanged = true;
          let balanceEnd = +new Date();
          console.log(wallet.getLabel(), 'fetch balance took', (balanceEnd - balanceStart) / 1000, 'sec');
          let start = +new Date();
          const oldTxLen = wallet.getTransactions().length;
          await wallet.fetchTransactions();
          if (oldTxLen !== wallet.getTransactions().length) smthChanged = true;
          if (wallet.fetchPendingTransactions) {
            await wallet.fetchPendingTransactions();
          }
          if (wallet.fetchUserInvoices) {
            await wallet.fetchUserInvoices();
          }
          let end = +new Date();
          console.log(wallet.getLabel(), 'fetch tx took', (end - start) / 1000, 'sec');
        } catch (err) {
          noErr = false;
          alert(err.message);
          this.setState({
            isLoading: false,
            showShowFlatListRefreshControl: false,
          });
        }
        if (noErr && smthChanged) {
          console.log('saving to disk');
          await BlueApp.saveToDisk(); // caching
          EV(EV.enum.TRANSACTIONS_COUNT_CHANGED); // let other components know they should redraw
        }
        this.redrawScreen();
      },
    );
  }

  _keyExtractor = (_item, index) => index.toString();

  renderListFooterComponent = () => {
    // if not all txs rendered - display indicator
    return (this.getTransactions(Infinity).length > this.state.limit && <ActivityIndicator style={{ marginVertical: 20 }} />) || <View />;
  };

  renderListHeaderComponent = () => {
    return (
      <View style={{ flex: 1, flexDirection: 'row' }}>
        <Text
          style={{
            flex: 1,
            marginLeft: 16,
            marginTop: 24,
            marginBottom: 8,
            fontWeight: 'bold',
            fontSize: 24,
            color: BlueApp.settings.foregroundColor,
          }}
        >
          {loc.transactions.list.title}
        </Text>
      </View>
    );
  };

  renderManageFundsModal = () => {
    return (
      <Modal
        isVisible={this.state.isManageFundsModalVisible}
        style={styles.bottomModal}
        onBackdropPress={() => {
          Keyboard.dismiss();
          this.setState({ isManageFundsModalVisible: false });
        }}
      >
        <KeyboardAvoidingView behavior={Platform.OS === 'ios' ? 'position' : null}>
          <View style={styles.advancedTransactionOptionsModalContent}>
            <BlueListItem
              hideChevron
              component={TouchableOpacity}
              onPress={a => {
                const wallets = [...BlueApp.getWallets().filter(item => item.chain === Chain.ONCHAIN && item.allowSend())];
                if (wallets.length === 0) {
                  alert('In order to proceed, please create a Bitcoin wallet to refill with.');
                } else {
                  this.setState({ isManageFundsModalVisible: false });
                  this.props.navigation.navigate('SelectWallet', { onWalletSelect: this.onWalletSelect, chainType: Chain.ONCHAIN });
                }
              }}
              title={loc.lnd.refill}
            />
            <BlueListItem
              hideChevron
              component={TouchableOpacity}
              onPress={a => {
                this.setState({ isManageFundsModalVisible: false }, () =>
                  this.props.navigation.navigate('ReceiveDetails', {
                    secret: this.state.wallet.getSecret(),
                  }),
                );
              }}
              title={'Refill with External Wallet'}
            />

            <BlueListItem
              title={loc.lnd.withdraw}
              hideChevron
              component={TouchableOpacity}
              onPress={a => {
                this.setState({ isManageFundsModalVisible: false });
                Linking.openURL('https://zigzag.io/?utm_source=integration&utm_medium=bluewallet&utm_campaign=withdrawLink');
              }}
            />
          </View>
        </KeyboardAvoidingView>
      </Modal>
    );
  };

  renderMarketplaceButton = () => {
    return Platform.select({
      android: (
        <TouchableOpacity
          onPress={() => {
            if (this.state.wallet.type === LightningCustodianWallet.type) {
              this.props.navigation.navigate('LappBrowser', { fromSecret: this.state.wallet.getSecret(), fromWallet: this.state.wallet });
            } else {
              this.props.navigation.navigate('Marketplace', { fromWallet: this.state.wallet });
            }
          }}
          style={{
            backgroundColor: '#f2f2f2',
            borderRadius: 9,
            minHeight: 49,
            flex: 1,
            paddingHorizontal: 8,
            justifyContent: 'center',
            flexDirection: 'row',
            alignItems: 'center',
          }}
        >
          <Text style={{ color: '#062453', fontSize: 18 }}>marketplace</Text>
        </TouchableOpacity>
      ),
      ios:
        this.state.wallet.getBalance() > 0 ? (
          <TouchableOpacity
            onPress={async () => {
              if (this.state.wallet.type === LightningCustodianWallet.type) {
                Linking.openURL('https://bluewallet.io/marketplace/');
              } else {
                let address = await this.state.wallet.getAddressAsync();
                Linking.openURL('https://bluewallet.io/marketplace-btc/?address=' + address);
              }
            }}
            style={{
              backgroundColor: '#f2f2f2',
              borderRadius: 9,
              minHeight: 49,
              flex: 1,
              paddingHorizontal: 8,
              justifyContent: 'center',
              flexDirection: 'row',
              alignItems: 'center',
            }}
          >
            <Icon name="external-link" size={18} type="font-awesome" color="#9aa0aa" />
            <Text style={{ color: '#062453', fontSize: 18, marginHorizontal: 8 }}>marketplace</Text>
          </TouchableOpacity>
        ) : null,
    });
  };

  renderLappBrowserButton = () => {
    return (
      <TouchableOpacity
        onPress={() => {
          this.props.navigation.navigate('LappBrowser', {
            fromSecret: this.state.wallet.getSecret(),
            fromWallet: this.state.wallet,
            url: '',
          });
        }}
        style={{
          marginLeft: 5,
          backgroundColor: '#f2f2f2',
          borderRadius: 9,
          minHeight: 49,
          flex: 1,
          paddingHorizontal: 8,
          justifyContent: 'center',
          flexDirection: 'row',
          alignItems: 'center',
        }}
      >
        <Text style={{ color: '#062453', fontSize: 18 }}>LApp Browser</Text>
      </TouchableOpacity>
    );
  };

  onWalletSelect = async wallet => {
    NavigationService.navigate('WalletTransactions');
    /** @type {LightningCustodianWallet} */
    let toAddress = false;
    if (this.state.wallet.refill_addressess.length > 0) {
      toAddress = this.state.wallet.refill_addressess[0];
    } else {
      try {
        await this.state.wallet.fetchBtcAddress();
        toAddress = this.state.wallet.refill_addressess[0];
      } catch (Err) {
        return alert(Err.message);
      }
    }

    if (wallet) {
      this.props.navigation.navigate('SendDetails', {
        memo: loc.lnd.refill_lnd_balance,
        fromSecret: wallet.getSecret(),
        address: toAddress,
        fromWallet: wallet,
      });
    } else {
      return alert('Internal error');
    }
  };

  async onWillBlur() {
    StatusBar.setBarStyle('dark-content');
  }

  componentWillUnmount() {
    this.onWillBlur();
  }

  renderItem = item => {
    return <BlueTransactionListItem item={item.item} itemPriceUnit={this.state.wallet.getPreferredBalanceUnit()} />;
  };

  render() {
    const { navigate } = this.props.navigation;
    return (
      <View style={{ flex: 1 }}>
        {this.state.wallet.chain === Chain.ONCHAIN && (
          <Handoff
            title={`Bitcoin Wallet ${this.state.wallet.getLabel()}`}
            type="io.bluewallet.bluewallet"
            url={`https://blockpath.com/search/addr?q=${this.state.wallet.getXpub()}`}
          />
        )}
        <NavigationEvents
          onWillFocus={() => {
            StatusBar.setBarStyle('light-content');
            this.redrawScreen();
          }}
          onWillBlur={() => this.onWillBlur()}
          onDidFocus={() => this.props.navigation.setParams({ isLoading: false })}
        />
        <BlueWalletNavigationHeader
          wallet={this.state.wallet}
          onWalletUnitChange={wallet =>
            InteractionManager.runAfterInteractions(async () => {
              this.setState({ wallet }, () => InteractionManager.runAfterInteractions(() => BlueApp.saveToDisk()));
            })
          }
          onManageFundsPressed={() => this.setState({ isManageFundsModalVisible: true })}
        />
        <View style={{ backgroundColor: '#FFFFFF' }}>
          <View style={{ flexDirection: 'row', margin: 16, justifyContent: 'space-evenly' }}>
            {/*
            So the idea here, due to Apple banning native Lapp marketplace, is:
            On Android everythins works as it worked before. Single "Marketplace" button that leads to LappBrowser that
            opens /marketplace/ url of offchain wallet type, and /marketplace-btc/ for onchain.
            On iOS its more complicated - we have one button that opens same page _externally_ (in Safari), and second
            button that opens actual LappBrowser but with _blank_ page. This is important to not trigger Apple.
            Blank page is also the way Trust Wallet does it with Dapp Browser.

            For ONCHAIN wallet type no LappBrowser button should be displayed, its Lightning-network specific.
           */}
            {this.renderMarketplaceButton()}
            {this.state.wallet.type === LightningCustodianWallet.type && Platform.OS === 'ios' && this.renderLappBrowserButton()}
          </View>
          <FlatList
            onEndReachedThreshold={0.3}
            onEndReached={() => {
              // pagination in works. in this block we will add more txs to flatlist
              // so as user scrolls closer to bottom it will render mode transactions

              if (this.getTransactions(Infinity).length < this.state.limit) {
                // all list rendered. nop
                return;
              }

              this.setState({
                dataSource: this.getTransactions(this.state.limit + this.state.pageSize),
                limit: this.state.limit + this.state.pageSize,
                pageSize: this.state.pageSize * 2,
              });
            }}
            ListHeaderComponent={this.renderListHeaderComponent}
            ListFooterComponent={this.renderListFooterComponent}
            ListEmptyComponent={
              <ScrollView style={{ minHeight: 100 }} contentContainerStyle={{ flex: 1, justifyContent: 'center', paddingHorizontal: 16 }}>
                <Text
                  numberOfLines={0}
                  style={{
                    fontSize: 18,
                    color: '#9aa0aa',
                    textAlign: 'center',
                  }}
                >
                  {(this.isLightning() && loc.wallets.list.empty_txs1_lightning) || loc.wallets.list.empty_txs1}
                </Text>
                <Text
                  style={{
                    fontSize: 18,
                    color: '#9aa0aa',
                    textAlign: 'center',
                  }}
                >
                  {(this.isLightning() && loc.wallets.list.empty_txs2_lightning) || loc.wallets.list.empty_txs2}
                </Text>

                <Text />
                <Text />

                {!this.isLightning() && (
                  <Text
                    style={{
                      fontSize: 18,
                      color: '#9aa0aa',
                      textAlign: 'center',
                      textDecorationLine: 'underline',
                    }}
                    onPress={() =>
                      this.props.navigation.navigate('BuyBitcoin', {
                        address: this.state.wallet.getAddress(),
                        secret: this.state.wallet.getSecret(),
                      })
                    }
                  >
                    {loc.wallets.list.tap_here_to_buy}
                  </Text>
                )}
              </ScrollView>
            }
            refreshControl={
              <RefreshControl onRefresh={() => this.refreshTransactions()} refreshing={this.state.showShowFlatListRefreshControl} />
            }
            extraData={this.state.dataSource}
            data={this.state.dataSource}
            keyExtractor={this._keyExtractor}
            renderItem={this.renderItem}
            contentInset={{ top: 0, left: 0, bottom: 90, right: 0 }}
          />
          {this.renderManageFundsModal()}
        </View>
        <View
          style={{
            flexDirection: 'row',
            alignSelf: 'center',
            backgroundColor: 'transparent',
            position: 'absolute',
            bottom: 30,
            borderRadius: 30,
            minHeight: 48,
            overflow: 'hidden',
          }}
        >
          {(() => {
            if (this.state.wallet.allowReceive()) {
              return (
                <BlueReceiveButtonIcon
                  onPress={() => {
                    if (this.state.wallet.type === LightningCustodianWallet.type) {
                      navigate('LNDCreateInvoice', { fromWallet: this.state.wallet });
                    } else {
                      navigate('ReceiveDetails', { secret: this.state.wallet.getSecret() });
                    }
                  }}
                />
              );
            }
          })()}

          {(() => {
            if (this.state.wallet.allowSend()) {
              return (
                <BlueSendButtonIcon
                  onPress={() => {
                    if (this.state.wallet.type === LightningCustodianWallet.type) {
                      navigate('ScanLndInvoice', { fromSecret: this.state.wallet.getSecret() });
                    } else {
                      navigate('SendDetails', {
                        fromAddress: this.state.wallet.getAddress(),
                        fromSecret: this.state.wallet.getSecret(),
                        fromWallet: this.state.wallet,
                      });
                    }
                  }}
                />
              );
            }
          })()}
        </View>
      </View>
    );
  }
}

const styles = StyleSheet.create({
  modalContent: {
    backgroundColor: '#FFFFFF',
    padding: 22,
    justifyContent: 'center',
    alignItems: 'center',
    borderTopLeftRadius: 16,
    borderTopRightRadius: 16,
    borderColor: 'rgba(0, 0, 0, 0.1)',
    minHeight: 200,
    height: 200,
  },
  advancedTransactionOptionsModalContent: {
    backgroundColor: '#FFFFFF',
    padding: 22,
    borderTopLeftRadius: 16,
    borderTopRightRadius: 16,
    borderColor: 'rgba(0, 0, 0, 0.1)',
    minHeight: 130,
  },
  bottomModal: {
    justifyContent: 'flex-end',
    margin: 0,
  },
});

WalletTransactions.propTypes = {
  navigation: PropTypes.shape({
    navigate: PropTypes.func,
    goBack: PropTypes.func,
    getParam: PropTypes.func,
    setParams: PropTypes.func,
  }),
};