'use strict';

angular.module('copayApp.controllers').controller('ImportController',
  function($scope, $rootScope, $location, controllerUtils, notification, isMobile, Compatibility) {

    $rootScope.title = 'Import wallet';
    $scope.importStatus = 'Importing wallet - Reading backup...';
    $scope.hideAdv = true;
    $scope.is_iOS = isMobile.iOS();
    $scope.importOpts = {};

    Compatibility.check($scope);

    var reader = new FileReader();

    var updateStatus = function(status) {
      $scope.importStatus = status;
      $scope.$digest();
    }

    $scope.openFileDialog = function() {
      if (window.cshell) {
        return cshell.send('backup:import');
      }
      $scope.choosefile = !$scope.choosefile;
    };


    $scope._doImport = function(encryptedObj, password) {
      updateStatus('Importing wallet - Procesing backup...');

      copay.Compatibility.importEncryptedWallet($rootScope.iden, encryptedObj,
        $scope.password, $scope.importOpts, function(err, wallet) {
          if (err) {
            $scope.loading = false;
            $scope.error = 'Could not read wallet. Please check your password';
          } else {
            controllerUtils.installWalletHandlers($scope, wallet);
            updateStatus('Importing wallet - Scanning for transactions...');
            wallet.updateIndexes(function(err) {
              controllerUtils.setFocusedWallet(wallet);
            });
          }
        }
      );
    };

  $scope.getFile = function() {
    // If we use onloadend, we need to check the readyState.
    reader.onloadend = function(evt) {
      if (evt.target.readyState == FileReader.DONE) { // DONE == 2
        var encryptedObj = evt.target.result;
        $scope._doImport(encryptedObj, $scope.password);
      }
    };
  };

  $scope.import = function(form) {
    $scope.loading = true;

    if (form.$invalid) {
      $scope.loading = false;
      $scope.error = 'There is an error in the form';
      return;
    }

    var backupFile = $scope.file;
    var backupText = form.backupText.$modelValue;
    var backupOldWallet = form.backupOldWallet.$modelValue;
    var password = form.password.$modelValue;

    if (backupOldWallet) {
      backupText = backupOldWallet.value;
    }

    if (!backupFile && !backupText) {
      $scope.loading = false;
      $scope.error = 'Please, select your backup file';
      return;
    }

    $scope.importOpts = {};

    var skipFields = [];

    if ($scope.skipPublicKeyRing)
      skipFields.push('publicKeyRing');

    if ($scope.skipTxProposals)
      skipFields.push('txProposals');

    if (skipFields)
      $scope.importOpts.skipFields = skipFields;


    if (backupFile) {
      reader.readAsBinaryString(backupFile);
    } else {
      $scope._doImport(backupText, $scope.password);
      copay.Compatibility.deleteOldWallet(backupOldWallet);
    }
  };
});