//-- copyright
// OpenProject is a project management system.
// Copyright (C) 2012-2015 the OpenProject Foundation (OPF)
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License version 3.
//
// OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
// Copyright (C) 2006-2013 Jean-Philippe Lang
// Copyright (C) 2010-2013 the ChiliProject Team
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
//
// See doc/COPYRIGHT.rdoc for more details.
//++

angular
  .module('openproject.workPackages.services')
  .factory('EditableFieldsState', EditableFieldsState);

function EditableFieldsState($rootScope, $window, inplaceEditErrors, inplaceEditForm) {
  var EditableFieldsState = {
    workPackage: null,
    errors: inplaceEditErrors.errors,
    isBusy: false,
    currentField: null,
    forcedEditState: false,
    focusField: 'subject',

    isFocusField: function (field) {
      return this.focusField === field;
    },

    isActiveField: function (field) {
      return !(this.forcedEditState || this.editAll.state) && this.currentField === field;
    },

    getPendingFormChanges: function () {
      var form = this.workPackage.form;
      return form.pendingChanges = form.pendingChanges || angular.copy(form.embedded.payload.props);
    },

    discard: function (fieldName) {
      delete this.getPendingFormChanges()[fieldName];

      if (inplaceEditErrors.errors && inplaceEditErrors.hasOwnProperty(fieldName)) {
        delete inplaceEditErrors.errors[fieldName];
      }
    },

    get canEdit() {
      return EditableFieldsState.workPackage && !!EditableFieldsState.workPackage.links.update;
    },

    editAll: {
      cancel: function () {
        inplaceEditForm.deleteNewForm();
        this.stop();
      },

      start: function () {
        return this.state = true;
      },

      stop: function () {
        return this.state = false;
      }
    }
  };

  $rootScope.$on('$stateChangeStart', function (event, toState, toParams, fromState, fromParams) {
    if (EditableFieldsState.editAll.state && fromParams.workPackageId
      && toParams.workPackageId !== fromParams.workPackageId) {

      if (!$window.confirm(I18n.t('js.text_are_you_sure'))) {
        return event.preventDefault();
      }

      EditableFieldsState.editAll.cancel();
    }
  });

  return EditableFieldsState;
}