'use strict';

angular.module('copayApp.controllers').controller('ImportController',
  function($scope, $rootScope, walletFactory, controllerUtils, Passphrase) {
    $scope.title = 'Import a backup';
    var reader = new FileReader();
    var _importBackup = function(encryptedObj) {
      Passphrase.getBase64Async($scope.password, function(passphrase) {
        walletFactory.import(encryptedObj, passphrase, function(err, w) {
          if (err) {
            $scope.loading = false;
            $rootScope.$flashMessage = {
              message: err.errMsg || 'Wrong password',
              type: 'error'
            };
            $rootScope.$digest();
            return;
          }
          $rootScope.wallet = w;
          controllerUtils.startNetwork($rootScope.wallet, $scope);
        });
      });
    };

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

    $scope.openPasteArea = function() {
      $scope.pastetext = !$scope.pastetext;
    };

    $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;
          _importBackup(encryptedObj);
        }
      };
    };

    $scope.import = function(form) {
      if (form.$invalid) {
        $scope.loading = false;
        $rootScope.$flashMessage = {
          message: 'There is an error in the form. Please, try again',
          type: 'error'
        };
        return;
      }

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

      if (!backupFile && !backupText) {
        $scope.loading = false;
        $rootScope.$flashMessage = {
          message: 'Please, select your backup file or paste the text',
          type: 'error'
        };
        $scope.loading = false;
        return;
      }

      $scope.loading = true;

      if (backupFile) {
        reader.readAsBinaryString(backupFile);
      } else {
        _importBackup(backupText);
      }
    };
  });