BlueWallet/screen/send/psbtWithHardwareWallet.js

/* global alert */
import React, { Component } from 'react';
import {
  ActivityIndicator,
  TouchableOpacity,
  ScrollView,
  View,
  Dimensions,
  Image,
  TextInput,
  Clipboard,
  Linking,
  Platform,
  PermissionsAndroid,
} from 'react-native';
import QRCode from 'react-native-qrcode-svg';
import { Icon, Text } from 'react-native-elements';
import {
  BlueButton,
  BlueText,
  SafeBlueArea,
  BlueCard,
  BlueNavigationStyle,
  BlueSpacing20,
  BlueCopyToClipboardButton,
} from '../../BlueComponents';
import PropTypes from 'prop-types';
import Share from 'react-native-share';
import ReactNativeHapticFeedback from 'react-native-haptic-feedback';
import { RNCamera } from 'react-native-camera';
import RNFS from 'react-native-fs';
import DocumentPicker from 'react-native-document-picker';
let loc = require('../../loc');
let EV = require('../../events');
let BlueElectrum = require('../../BlueElectrum');
/** @type {AppStorage} */
const BlueApp = require('../../BlueApp');
const bitcoin = require('bitcoinjs-lib');
const { height, width } = Dimensions.get('window');

export default class PsbtWithHardwareWallet extends Component {
  static navigationOptions = () => ({
    ...BlueNavigationStyle(null, false),
    title: loc.send.header,
  });

  cameraRef = null;

  onBarCodeRead = ret => {
    if (RNCamera.Constants.CameraStatus === RNCamera.Constants.CameraStatus.READY) this.cameraRef.pausePreview();

    if (ret.data.indexOf('+') === -1 && ret.data.indexOf('=') === -1 && ret.data.indexOf('=') === -1) {
      // this looks like NOT base64, so maybe its transaction's hex
      this.setState({ renderScanner: false, txhex: ret.data });
      return;
    }

    this.setState({ renderScanner: false }, () => {
      try {
        let Tx = this.state.fromWallet.combinePsbt(
          this.state.isFirstPSBTAlreadyBase64 ? this.state.psbt : this.state.psbt.toBase64(),
          ret.data,
        );
        this.setState({ txhex: Tx.toHex() });
      } catch (Err) {
        alert(Err);
      }
    });
  };

  constructor(props) {
    super(props);
    this.state = {
      isLoading: false,
      renderScanner: false,
      qrCodeHeight: height > width ? width - 40 : width / 3,
      memo: props.navigation.getParam('memo'),
      psbt: props.navigation.getParam('psbt'),
      fromWallet: props.navigation.getParam('fromWallet'),
      isFirstPSBTAlreadyBase64: props.navigation.getParam('isFirstPSBTAlreadyBase64'),
      isSecondPSBTAlreadyBase64: false,
      deepLinkPSBT: undefined,
      txhex: props.navigation.getParam('txhex') || undefined,
    };
    this.fileName = `${Date.now()}.psbt`;
  }

  static getDerivedStateFromProps(nextProps, prevState) {
    const deepLinkPSBT = nextProps.navigation.state.params.deepLinkPSBT;
    const txhex = nextProps.navigation.state.params.txhex;
    if (deepLinkPSBT) {
      try {
        let Tx = prevState.fromWallet.combinePsbt(
          prevState.isFirstPSBTAlreadyBase64 ? prevState.psbt : prevState.psbt.toBase64(),
          deepLinkPSBT,
        );
        return {
          ...prevState,
          txhex: Tx.toHex(),
        };
      } catch (Err) {
        alert(Err);
      }
    } else if (txhex) {
      return {
        ...prevState,
        txhex: txhex,
      };
    }
    return prevState;
  }

  componentDidMount() {
    console.log('send/psbtWithHardwareWallet - componentDidMount');
  }

  broadcast = () => {
    this.setState({ isLoading: true }, async () => {
      try {
        await BlueElectrum.ping();
        await BlueElectrum.waitTillConnected();
        let result = await this.state.fromWallet.broadcastTx(this.state.txhex);
        if (result) {
          console.log('broadcast result = ', result);
          EV(EV.enum.REMOTE_TRANSACTIONS_COUNT_CHANGED); // someone should fetch txs
          this.setState({ success: true, isLoading: false });
          if (this.state.memo) {
            let txDecoded = bitcoin.Transaction.fromHex(this.state.txhex);
            const txid = txDecoded.getId();
            BlueApp.tx_metadata[txid] = { memo: this.state.memo };
          }
        } else {
          ReactNativeHapticFeedback.trigger('notificationError', { ignoreAndroidSystemSettings: false });
          this.setState({ isLoading: false });
          alert('Broadcast failed');
        }
      } catch (error) {
        ReactNativeHapticFeedback.trigger('notificationError', { ignoreAndroidSystemSettings: false });
        this.setState({ isLoading: false });
        alert(error.message);
      }
    });
  };

  _renderScanner() {
    return (
      <SafeBlueArea style={{ flex: 1 }}>
        <RNCamera
          captureAudio={false}
          androidCameraPermissionOptions={{
            title: 'Permission to use camera',
            message: 'We need your permission to use your camera',
            buttonPositive: 'OK',
            buttonNegative: 'Cancel',
          }}
          ref={ref => (this.cameraRef = ref)}
          style={{ flex: 1, justifyContent: 'space-between' }}
          onBarCodeRead={this.onBarCodeRead}
          barCodeTypes={[RNCamera.Constants.BarCodeType.qr]}
        />
        <TouchableOpacity
          style={{
            width: 40,
            height: 40,
            backgroundColor: 'rgba(0,0,0,0.4)',
            justifyContent: 'center',
            borderRadius: 20,
            position: 'absolute',
            right: 16,
            top: 64,
          }}
          onPress={() => this.setState({ renderScanner: false })}
        >
          <Image style={{ alignSelf: 'center' }} source={require('../../img/close-white.png')} />
        </TouchableOpacity>
      </SafeBlueArea>
    );
  }

  _renderSuccess() {
    return (
      <SafeBlueArea style={{ flex: 1 }}>
        <View
          style={{
            backgroundColor: '#ccddf9',
            width: 120,
            height: 120,
            borderRadius: 60,
            alignSelf: 'center',
            justifyContent: 'center',
            marginTop: 143,
            marginBottom: 53,
          }}
        >
          <Icon name="check" size={50} type="font-awesome" color="#0f5cc0" />
        </View>
        <BlueCard>
          <BlueButton onPress={this.props.navigation.dismiss} title={loc.send.success.done} />
        </BlueCard>
      </SafeBlueArea>
    );
  }

  _renderBroadcastHex() {
    return (
      <View style={{ flex: 1, paddingTop: 20 }}>
        <BlueCard style={{ alignItems: 'center', flex: 1 }}>
          <BlueText style={{ color: '#0c2550', fontWeight: '500' }}>{loc.send.create.this_is_hex}</BlueText>
          <TextInput
            style={{
              borderColor: '#ebebeb',
              backgroundColor: '#d2f8d6',
              borderRadius: 4,
              marginTop: 20,
              color: '#37c0a1',
              fontWeight: '500',
              fontSize: 14,
              paddingHorizontal: 16,
              paddingBottom: 16,
              paddingTop: 16,
            }}
            height={112}
            multiline
            editable
            value={this.state.txhex}
          />

          <TouchableOpacity style={{ marginVertical: 24 }} onPress={() => Clipboard.setString(this.state.txhex)}>
            <Text style={{ color: '#9aa0aa', fontSize: 15, fontWeight: '500', alignSelf: 'center' }}>Copy and broadcast later</Text>
          </TouchableOpacity>
          <TouchableOpacity style={{ marginVertical: 24 }} onPress={() => Linking.openURL('https://coinb.in/?verify=' + this.state.txhex)}>
            <Text style={{ color: '#9aa0aa', fontSize: 15, fontWeight: '500', alignSelf: 'center' }}>Verify on coinb.in</Text>
          </TouchableOpacity>
          <BlueSpacing20 />
          <BlueButton onPress={this.broadcast} title={loc.send.confirm.sendNow} />
        </BlueCard>
      </View>
    );
  }

  exportPSBT = async () => {
    if (Platform.OS === 'ios') {
      const filePath = RNFS.TemporaryDirectoryPath + `/${this.fileName}`;
      await RNFS.writeFile(filePath, this.state.isFirstPSBTAlreadyBase64 ? this.state.psbt : this.state.psbt.toBase64());
      Share.open({
        url: 'file://' + filePath,
      })
        .catch(error => console.log(error))
        .finally(() => {
          RNFS.unlink(filePath);
        });
    } else if (Platform.OS === 'android') {
      const granted = await PermissionsAndroid.request(PermissionsAndroid.PERMISSIONS.WRITE_EXTERNAL_STORAGE, {
        title: 'BlueWallet Storage Access Permission',
        message: 'BlueWallet needs your permission to access your storage to save this transaction.',
        buttonNeutral: 'Ask Me Later',
        buttonNegative: 'Cancel',
        buttonPositive: 'OK',
      });

      if (granted === PermissionsAndroid.RESULTS.GRANTED) {
        console.log('Storage Permission: Granted');
        const filePath = RNFS.ExternalCachesDirectoryPath + `/${this.fileName}`;
        await RNFS.writeFile(filePath, this.state.isFirstPSBTAlreadyBase64 ? this.state.psbt : this.state.psbt.toBase64());
        alert(`This transaction has been saved in ${filePath}`);
      } else {
        console.log('Storage Permission: Denied');
      }
    }
  };

  openSignedTransaction = async () => {
    try {
      const res = await DocumentPicker.pick({
        type: Platform.OS === 'ios' ? ['io.bluewallet.psbt', 'io.bluewallt.psbt.txn'] : [DocumentPicker.types.allFiles],
      });
      const file = await RNFS.readFile(res.uri);
      if (file) {
        this.setState({ isSecondPSBTAlreadyBase64: true }, () => this.onBarCodeRead({ data: file }));
      } else {
        this.setState({ isSecondPSBTAlreadyBase64: false });
        throw new Error();
      }
    } catch (err) {
      if (!DocumentPicker.isCancel(err)) {
        alert('The selected file does not contain a signed transaction that can be imported.');
      }
    }
  };

  render() {
    if (this.state.isLoading) {
      return (
        <View style={{ flex: 1, paddingTop: 20 }}>
          <ActivityIndicator />
        </View>
      );
    }

    if (this.state.success) return this._renderSuccess();
    if (this.state.renderScanner) return this._renderScanner();
    if (this.state.txhex) return this._renderBroadcastHex();

    return (
      <SafeBlueArea style={{ flex: 1 }}>
        <ScrollView centerContent contentContainerStyle={{ flexGrow: 1, justifyContent: 'space-between' }}>
          <View style={{ flexDirection: 'row', justifyContent: 'center', paddingTop: 16, paddingBottom: 16 }}>
            <BlueCard>
              <BlueText>This is partially signed bitcoin transaction (PSBT). Please finish signing it with your hardware wallet.</BlueText>
              <BlueSpacing20 />
              <QRCode
                value={this.state.isFirstPSBTAlreadyBase64 ? this.state.psbt : this.state.psbt.toBase64()}
                size={this.state.qrCodeHeight}
                color={BlueApp.settings.foregroundColor}
                logoBackgroundColor={BlueApp.settings.brandingColor}
                ecl={'L'}
              />
              <BlueSpacing20 />
              <BlueButton
                icon={{
                  name: 'qrcode',
                  type: 'font-awesome',
                  color: BlueApp.settings.buttonTextColor,
                }}
                onPress={() => this.setState({ renderScanner: true })}
                title={'Scan Signed Transaction'}
              />
              <BlueSpacing20 />
              <BlueButton
                icon={{
                  name: 'file-import',
                  type: 'material-community',
                  color: BlueApp.settings.buttonTextColor,
                }}
                onPress={this.openSignedTransaction}
                title={'Open Signed Transaction'}
              />
              <BlueSpacing20 />
              <BlueButton
                icon={{
                  name: 'share-alternative',
                  type: 'entypo',
                  color: BlueApp.settings.buttonTextColor,
                }}
                onPress={this.exportPSBT}
                title={'Export to file'}
              />
              <BlueSpacing20 />
              <View style={{ justifyContent: 'center', alignItems: 'center' }}>
                <BlueCopyToClipboardButton
                  stringToCopy={this.state.isFirstPSBTAlreadyBase64 ? this.state.psbt : this.state.psbt.toBase64()}
                  displayText={'Copy to Clipboard'}
                />
              </View>
            </BlueCard>
          </View>
        </ScrollView>
      </SafeBlueArea>
    );
  }
}

PsbtWithHardwareWallet.propTypes = {
  navigation: PropTypes.shape({
    goBack: PropTypes.func,
    getParam: PropTypes.func,
    navigate: PropTypes.func,
    dismiss: PropTypes.func,
    state: PropTypes.shape({
      params: PropTypes.shape({
        memo: PropTypes.string,
        fromWallet: PropTypes.shape({
          fromAddress: PropTypes.string,
          fromSecret: PropTypes.string,
        }),
      }),
    }),
  }),
};