import React, {Component, createRef} from 'react';
import {Platform} from 'react-native';
import {
  InteractionManager,
  TouchableOpacity,
  View,
  Clipboard,
} from 'react-native';
import Share from 'react-native-share';
import Icon from 'react-native-vector-icons/MaterialCommunityIcons';
import {notesnook} from '../../../e2e/test.ids';
import BiometricService from '../../services/BiometricService';
import {DDS} from '../../services/DeviceDetection';
import {
  eSendEvent,
  eSubscribeEvent,
  eUnSubscribeEvent,
  sendNoteEditedEvent,
  ToastEvent,
} from '../../services/EventManager';
import Navigation from '../../services/Navigation';
import {getElevation, toTXT} from '../../utils';
import {db} from '../../utils/DB';
import {
  eClearEditor,
  eCloseActionSheet,
  eCloseVaultDialog,
  eOnLoadNote,
  eOpenVaultDialog,
} from '../../utils/Events';
import {deleteItems} from '../../utils/functions';
import {tabBarRef} from '../../utils/Refs';
import {ph, SIZE} from '../../utils/SizeUtils';
import {sleep} from '../../utils/TimeUtils';
import {getNote} from '../../views/Editor/Functions';
import {Button} from '../Button';
import BaseDialog from '../Dialog/base-dialog';
import DialogButtons from '../Dialog/dialog-buttons';
import DialogHeader from '../Dialog/dialog-header';
import Input from '../Input';
import {Toast} from '../Toast';
import Paragraph from '../Typography/Paragraph';

let Keychain;
const passInputRef = createRef();
const confirmPassRef = createRef();
const changePassInputRef = createRef();
export class VaultDialog extends Component {
  constructor(props) {
    super(props);
    this.state = {
      visible: false,
      wrongPassword: false,
      loading: false,
      note: {},
      vault: false,
      locked: true,
      permanant: false,
      goToEditor: false,
      share: false,
      passwordsDontMatch: false,
      deleteNote: false,
      focusIndex: null,
      biometricUnlock: false,
      isBiometryEnrolled: false,
      isBiometryAvailable: false,
      fingerprintAccess: false,
      changePassword: false,
      copyNote: false,
      revokeFingerprintAccess: false,
      title: 'Unlock Note',
      description: null,
    };
    this.password = null;
    this.confirmPassword = null;
    this.newPassword = null;
    (this.title = !this.state.novault
      ? 'Create Vault'
      : this.state.fingerprintAccess
      ? 'Vault Fingerprint Unlock'
      : this.state.revokeFingerprintAccess
      ? 'Revoke Vault Fingerprint Unlock'
      : this.state.changePassword
      ? 'Change Vault Password'
      : this.state.note.locked
      ? this.state.deleteNote
        ? 'Delete note'
        : this.state.share
        ? 'Share note'
        : this.state.copyNote
        ? 'Copy note'
        : this.state.goToEditor
        ? 'Unlock note'
        : 'Unlock note'
      : 'Lock note'),
      (this.description = !this.state.novault
        ? 'Set a password to create vault'
        : this.state.fingerprintAccess
        ? 'Enter vault password to enable fingerprint unlocking.'
        : this.state.revokeFingerprintAccess
        ? 'Disable vault fingerprint unlock '
        : this.state.changePassword
        ? 'Setup a new password for the vault.'
        : this.state.permanant
        ? 'Enter password to remove note from vault.'
        : this.state.note.locked
        ? this.state.deleteNote
          ? 'Unlock note to delete it. If biometrics are not working, you can enter device pin to unlock vault.'
          : this.state.share
          ? 'Unlock note to share it. If biometrics are not working, you can enter device pin to unlock vault.'
          : this.state.copyNote
          ? 'Unlock note to copy it. If biometrics are not working, you can enter device pin to unlock vault.'
          : this.state.goToEditor
          ? 'Unlock note to open it in editor. If biometrics are not working, you can enter device pin to unlock vault.'
          : 'Enter vault password to unlock note. If biometrics are not working, you can enter device pin to unlock vault.'
        : 'Enter vault password to lock note. If biometrics are not working, you can enter device pin to lock note.');
  }

  componentDidMount() {
    eSubscribeEvent(eOpenVaultDialog, this.open);
    eSubscribeEvent(eCloseVaultDialog, this.close);
  }

  componentWillUnmount() {
    eUnSubscribeEvent(eOpenVaultDialog, this.open);
    eUnSubscribeEvent(eCloseVaultDialog, this.close);
  }

  /**
   *
   * @param {import('../../services/EventManager').vaultType} data
   */
  open = async data => {
    if (!Keychain) {
      Keychain = require('react-native-keychain');
    }
    let biometry = await BiometricService.isBiometryAvailable();
    let available = false;
    let fingerprint = await BiometricService.hasInternetCredentials('nn_vault');

    if (biometry) {
      available = true;
    }

    this.setState({
      note: data.item,
      novault: data.novault,
      locked: data.locked,
      permanant: data.permanant,
      goToEditor: data.goToEditor,
      share: data.share,
      deleteNote: data.deleteNote,
      copyNote: data.copyNote,
      isBiometryAvailable: available,
      biometricUnlock: fingerprint,
      isBiometryEnrolled: fingerprint,
      fingerprintAccess: data.fingerprintAccess,
      changePassword: data.changePassword,
      revokeFingerprintAccess: data.revokeFingerprintAccess,
      title: data.title,
      description: data.description,
    });

    if (
      fingerprint &&
      data.novault &&
      !data.fingerprintAccess &&
      !data.revokeFingerprintAccess &&
      !data.changePassword
    ) {
      await this._onPressFingerprintAuth(data.title, data.description);
    } else {
      this.setState({
        visible: true,
      });
    }
  };

  close = () => {
    if (this.state.loading) {
      ToastEvent.show({
        heading: this.state.title,
        message: 'Please wait and do not close the app.',
        type: 'success',
        context: 'local',
      });
      return;
    }
    Navigation.setRoutesToUpdate([
      Navigation.routeNames.NotesPage,
      Navigation.routeNames.Favorites,
      Navigation.routeNames.Notes,
    ]);
    Navigation.setRoutesToUpdate([
      Navigation.routeNames.Notes,
      Navigation.routeNames.Favorites,
      Navigation.routeNames.NotesPage,
      Navigation.routeNames.Notebook,
    ]);
    this.password = null;
    this.confirmPassword = null;
    this.setState({
      visible: false,
      note: {},
      locked: false,
      permanant: false,
      goToEditor: false,
      share: false,
      novault: false,
      deleteNote: false,
      passwordsDontMatch: false,
    });
  };

  onPress = async () => {
    if (this.state.revokeFingerprintAccess) {
      await this._revokeFingerprintAccess();

      this.close();
      return;
    }
    if (this.state.loading) return;

    if (!this.password) {
      ToastEvent.show({
        heading: 'Password not entered',
        message: 'Enter a password for the vault and try again.',
        type: 'error',
        context: 'local',
      });
      return;
    }
    if (this.password && this.password.length < 3) {
      ToastEvent.show({
        heading: 'Password too short',
        message: 'Password must be longer than 3 characters.',
        type: 'error',
        context: 'local',
      });

      return;
    }

    if (!this.state.novault) {
      if (this.password !== this.confirmPassword) {
        ToastEvent.show({
          heading: 'Passwords do not match',
          type: 'error',
          context: 'local',
        });
        this.setState({
          passwordsDontMatch: true,
        });
        return;
      }

      this._createVault();
    } else if (this.state.changePassword) {
      this.setState({
        loading: true,
      });

      db.vault
        .changePassword(this.password, this.newPassword)
        .then(result => {
          this.setState({
            loading: false,
          });
          if (this.state.biometricUnlock) {
            this._enrollFingerprint(this.newPassword);
          }
          ToastEvent.show({
            heading: 'Vault password updated successfully',
            type: 'success',
            context: 'global',
          });
          this.close();
        })
        .catch(e => {
          this.setState({
            loading: false,
          });
          if (e.message === db.vault.ERRORS.wrongPassword) {
            ToastEvent.show({
              heading: 'Incorrect password',
              message:"Please enter the correct password and try again",
              type: 'error',
              context: 'local',
            });
          }
        });
    } else if (this.state.locked) {
      if (!this.password || this.password.trim() === 0) {
        ToastEvent.show({
          heading: 'Incorrect password',
          message:"Please enter the correct password and try again",
          type: 'error',
          context: 'local',
        });
        this.setState({
          wrongPassword: true,
        });
        return;
      }
      db.vault
        .unlock(this.password)
        .then(async () => {
          this.setState({
            wrongPassword: false,
          });
          if (this.state.note.locked) {
            await this._unlockNote();
          } else {
            await this._lockNote();
          }
        })
        .catch(e => {
          this._takeErrorAction(e);
        });
    } else if (this.state.fingerprintAccess) {
      this._enrollFingerprint(this.password);
    }
  };

  async _lockNote() {
    if (!this.password || this.password.trim() === 0) {
      ToastEvent.show({
        message: 'Incorrect password',
        message:"Please enter the correct password and try again",
        type: 'error',
        context: 'local',
      });
      console.log('returning from here');
      return;
    } else {
      await db.vault.add(this.state.note.id);
      if (this.state.note.id === getNote()?.id) {
        eSendEvent(eClearEditor);
      }
      this.close();
      ToastEvent.show({
        message: 'Note locked successfully',
        type: 'error',
        context: 'local',
      });
      this.setState({
        loading: false,
      });
    }
  }

  async _unlockNote() {
    if (!this.password || this.password.trim() === 0) {
      ToastEvent.show({
        heading: 'Incorrect password',
        message:"Please enter the correct password and try again",
        type: 'error',
        context: 'local',
      });
      return;
    }
    if (this.state.permanant) {
      this._permanantUnlock();
    } else {
      await this._openNote();
    }
  }

  _openNote = async () => {
    try {
      let note = await db.vault.open(this.state.note.id, this.password);
      if (this.state.biometricUnlock && !this.state.isBiometryEnrolled) {
        await this._enrollFingerprint(this.password);
      }
      if (this.state.goToEditor) {
        this._openInEditor(note);
      } else if (this.state.share) {
        await this._shareNote(note);
      } else if (this.state.deleteNote) {
        await this._deleteNote();
      } else if (this.state.copyNote) {
        this._copyNote(note);
      }
    } catch (e) {
      this._takeErrorAction(e);
    }
  };
  async _deleteNote() {
    try {
      await db.vault.remove(this.state.note.id, this.password);
      await deleteItems(this.state.note);
      this.close();
    } catch (e) {
      this._takeErrorAction(e);
    }
  }

  async _enrollFingerprint(password) {
    try {
      this.setState(
        {
          loading: true,
        },
        async () => {
          try {
            await db.vault.unlock(password);
            await BiometricService.storeCredentials(password);
            this.setState({
              loading: false,
            });
            eSendEvent('vaultUpdated');
            ToastEvent.show({
              heading: 'Biometric unlocking enabled!',
              message: 'Now you can unlock notes in vault with biometrics.',
              type: 'success',
              context: 'global',
            });
            this.close();
          } catch (e) {
            ToastEvent.show({
              heading: 'Incorrect password',
              message:
                'Please enter the correct vault password to enable biometrics.',
              type: 'error',
              context: 'local',
            });
            this.setState({
              loading: false,
            });
            return;
          }
        },
      );
    } catch (e) {
      this._takeErrorAction(e);
    }
  }

  async _createVault() {
    await db.vault.create(this.password);

    if (this.state.biometricUnlock) {
      await this._enrollFingerprint(this.password);
    }
    if (this.state.note?.id) {
      await db.vault.add(this.state.note.id);
      if (this.state.note.id === getNote()?.id) {
        eSendEvent(eClearEditor);
      }
      this.setState({
        loading: false,
      });
      ToastEvent.show({
        heading: 'Note added to vault',
        type: 'success',
        context: 'global',
      });
      this.close();
    } else {
      eSendEvent('vaultUpdated');
      ToastEvent.show({
        heading: 'Vault created successfully',
        type: 'success',
        context: 'global',
      });
      this.close();
    }
  }

  _permanantUnlock() {
    db.vault
      .remove(this.state.note.id, this.password)
      .then(r => {
        ToastEvent.show({
          heading: 'Note permanantly unlocked.',
          type: 'success',
          context: 'global',
        });
        this.close();
      })
      .catch(e => {
        this._takeErrorAction(e);
      });
  }

  _openInEditor(note) {
    this.close();
    InteractionManager.runAfterInteractions(() => {
      eSendEvent(eOnLoadNote, note);
      if (!DDS.isTab) {
        tabBarRef.current?.goToPage(1);
      }
    });
  }

  _copyNote(note) {
    let text = toTXT(note.content.data);
    text = `${note.title}\n \n ${text}`;
    console.log(text, 'TEXT');
    Clipboard.setString(text);
    Toast.show({
      heading: 'Note copied',
      type: 'success',
      message: 'Note has been copied to clipboard!',
      context: 'global',
    });
    this.close();
  }

  async _shareNote(note) {
    this.close();
    let text = toTXT(note.content.data);
    text = `${note.title}\n \n ${text}`;
    try {
      await Share.open({
        heading: 'Share note to',
        failOnCancel: false,
        message: text,
      });
    } catch (e) {}
  }

  _takeErrorAction(e) {
    if (e.message === db.vault.ERRORS.wrongPassword) {
      this.setState({
        wrongPassword: true,
        visible: true,
      });
      setTimeout(() => {
        ToastEvent.show({
          heading: 'Incorrect password',
          type: 'error',
          context: 'local',
        });
      }, 500);

      return;
    }
  }

  _revokeFingerprintAccess = async () => {
    try {
      await BiometricService.resetCredentials();
      eSendEvent('vaultUpdated');
      ToastEvent.show({
        heading: 'Biometric unlocking disabled!',
        type: 'success',
        context: 'global',
      });
    } catch (e) {
      ToastEvent.show({
        heading: 'Failed to disable Biometric unlocking.',
        message: e.message,
        type: 'success',
        context: 'global',
      });
    }
  };

  _onPressFingerprintAuth = async (title, description) => {
    try {
      let credentials = await BiometricService.getCredentials(
        title || this.state.title,
        description || this.state.description,
      );

      if (credentials?.password) {
        this.password = credentials.password;
        this.onPress();
      } else {
        eSendEvent(eCloseActionSheet);
        await sleep(300);
        this.setState({
          visible: true,
        });
      }
    } catch (e) {}
  };

  render() {
    const {colors} = this.props;
    const {
      note,
      visible,
      wrongPassword,
      passwordsDontMatch,
      novault,
      locked,
      permanant,
      biometricUnlock,
      deleteNote,
      share,
      goToEditor,
      fingerprintAccess,
      changePassword,
      copyNote,
      loading,
    } = this.state;

    if (!visible) return null;
    return (
      <BaseDialog
        onShow={async () => {
          await sleep(100);
          passInputRef.current?.focus();
        }}
        statusBarTranslucent={false}
        onRequestClose={this.close}
        visible={true}>
        <View
          style={{
            ...getElevation(5),
            width: DDS.isTab ? 350 : '85%',
            borderRadius: 5,
            backgroundColor: colors.bg,
            paddingHorizontal: ph,
            paddingVertical: 15,
          }}>
          <DialogHeader
            title={this.state.title}
            paragraph={this.state.description}
            icon="shield"
          />

          {(novault || changePassword) &&
          !this.state.revokeFingerprintAccess ? (
            <>
              <Input
                fwdRef={passInputRef}
                editable={!loading}
                autoCapitalize="none"
                testID={notesnook.ids.dialogs.vault.pwd}
                onChangeText={value => {
                  this.password = value;
                }}
                marginBottom={
                  !this.state.biometricUnlock ||
                  !this.state.isBiometryEnrolled ||
                  !novault ||
                  changePassword
                    ? 0
                    : 10
                }
                onSubmit={() => {
                  changePassword
                    ? changePassInputRef.current?.focus()
                    : this.onPress;
                }}
                autoCompleteType="password"
                returnKeyLabel={changePassword ? 'Next' : this.state.title}
                returnKeyType={changePassword ? 'next' : 'done'}
                secureTextEntry
                placeholder={changePassword ? 'Current password' : 'Password'}
              />

              {!this.state.biometricUnlock ||
              !this.state.isBiometryEnrolled ||
              !novault ||
              changePassword ? null : (
                <Button
                  onPress={() =>
                    this._onPressFingerprintAuth('Unlock note', '')
                  }
                  icon="fingerprint"
                  width="100%"
                  title={'Biometric unlock'}
                  type="shade"
                />
              )}
            </>
          ) : null}

          {changePassword ? (
            <>
              <Input
                ref={changePassInputRef}
                editable={!loading}
                testID={notesnook.ids.dialogs.vault.changePwd}
                autoCapitalize="none"
                onChangeText={value => {
                  this.newPassword = value;
                }}
                autoCompleteType="password"
                onSubmit={this.onPress}
                returnKeyLabel="Change"
                returnKeyType="done"
                secureTextEntry
                placeholder={'New password'}
              />
            </>
          ) : null}

          {!novault ? (
            <View>
              <Input
                fwdRef={passInputRef}
                autoCapitalize="none"
                testID={notesnook.ids.dialogs.vault.pwd}
                onChangeText={value => {
                  this.password = value;
                }}
                autoCompleteType="password"
                returnKeyLabel="Next"
                returnKeyType="next"
                secureTextEntry
                onSubmit={() => {
                  confirmPassRef.current?.focus();
                }}
                placeholder="Password"
              />

              <Input
                fwdRef={confirmPassRef}
                autoCapitalize="none"
                testID={notesnook.ids.dialogs.vault.pwdAlt}
                secureTextEntry
                validationType="confirmPassword"
                customValidator={() => this.password}
                errorMessage="Passwords do not match."
                onErrorCheck={e => null}
                marginBottom={0}
                autoCompleteType="password"
                returnKeyLabel="Create"
                returnKeyType="done"
                onChangeText={value => {
                  this.confirmPassword = value;
                  if (value !== this.password) {
                    this.setState({
                      passwordsDontMatch: true,
                    });
                  } else {
                    this.setState({
                      passwordsDontMatch: false,
                    });
                  }
                }}
                onSubmit={this.onPress}
                placeholder="Confirm password"
              />
            </View>
          ) : null}

          {this.state.biometricUnlock &&
            !this.state.isBiometryEnrolled &&
            novault && (
              <Paragraph>
                Unlock with password once to enable biometric access.
              </Paragraph>
            )}

          {this.state.isBiometryAvailable &&
          !this.state.fingerprintAccess &&
          ((!this.state.biometricUnlock && !changePassword) || !novault) ? (
            <Button
              onPress={() => {
                this.setState({
                  biometricUnlock: !biometricUnlock,
                });
              }}
              style={{
                marginTop: 10,
              }}
              icon="fingerprint"
              width="100%"
              title="Enable biometric unlocking"
              type="shade"
            />
          ) : null}

          <DialogButtons
            onPressNegative={this.close}
            onPressPositive={this.onPress}
            loading={loading}
            positiveTitle={
              fingerprintAccess
                ? 'Enable'
                : this.state.revokeFingerprintAccess
                ? 'Revoke'
                : changePassword
                ? 'Change'
                : note.locked
                ? deleteNote
                  ? 'Delete'
                  : share
                  ? 'Share '
                  : goToEditor
                  ? 'Open'
                  : 'Unlock'
                : !note.id
                ? 'Create'
                : 'Lock'
            }
          />
        </View>
        <Toast context="local" />
      </BaseDialog>
    );
  }
}