// Copyright (C) 2016 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
(function() {
  'use strict';

  Polymer({
    is: 'gr-email-editor',

    properties: {
      hasUnsavedChanges: {
        type: Boolean,
        notify: true,
        value: false,
      },

      _emails: Array,
      _emailsToRemove: {
        type: Array,
        value: function() { return []; },
      },
      _newPreferred: {
        type: String,
        value: null,
      },
    },

    loadData: function() {
      return this.$.restAPI.getAccountEmails().then(function(emails) {
        this._emails = emails;
      }.bind(this));
    },

    save: function() {
      var promises = [];

      for (var i = 0; i < this._emailsToRemove.length; i++) {
        promises.push(this.$.restAPI.deleteAccountEmail(
            this._emailsToRemove[i].email));
      }

      if (this._newPreferred) {
        promises.push(this.$.restAPI.setPreferredAccountEmail(
            this._newPreferred));
      }

      return Promise.all(promises).then(function() {
        this._emailsToRemove = [];
        this._newPreferred = null;
        this.hasUnsavedChanges = false;
      }.bind(this));
    },

    _handleDeleteButton: function(e) {
      var index = parseInt(e.target.getAttribute('data-index'));
      var email = this._emails[index];
      this.push('_emailsToRemove', email);
      this.splice('_emails', index, 1);
      this.hasUnsavedChanges = true;
    },

    _handlePreferredControlTap: function(e) {
      if (e.target.classList.contains('preferredControl')) {
        e.target.firstElementChild.click();
      }
    },

    _handlePreferredChange: function(e) {
      var preferred = e.target.value;
      for (var i = 0; i < this._emails.length; i++) {
        if (preferred === this._emails[i].email) {
          this.set(['_emails', i, 'preferred'], true);
          this._newPreferred = preferred;
          this.hasUnsavedChanges = true;
        } else if (this._emails[i].preferred) {
          this.set(['_emails', i, 'preferred'], false);
        }
      }
    },
  });
})();