//-- 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.
//++

module.exports = function(
    I18n,
    FocusHelper
  ) {
  'use strict';

  var workPackageWatchersLookupController = function(scope) {
    scope.locked = false;
    scope.editMode = false;
    scope.I18n = I18n;

    // we need an object for ui.select to work properly
    scope.selection = {
      watcher: null
    };

    scope.changeEditMode = function() {
      scope.editMode = !scope.editMode;
    };

    scope.intoEditMode = function() {
      scope.changeEditMode();
      FocusHelper.focusUiSelect(angular.element('.work-package--watchers-lookup'));
    };

    scope.addWatcher = function() {
      if (!scope.selection.watcher) {
        return;
      }

      scope.locked = !scope.locked;

      // we pass up the original up the scope chain,
      // _not_ the wrapper object
      scope.$emit('watchers.add', scope.selection.watcher);
    };

    scope.$on('watchers.add.finished', function() {
      scope.locked = !scope.locked;

      // to clear the input of the directive
      scope.selection.watcher = null;

      if (scope.watchers.length ===  0) {
        // this will set the editMode back, once no more watchers can be added
        scope.editMode = false;
      }
      else {
        FocusHelper.focusUiSelect(angular.element('.work-package--watchers-lookup'));
      }
    });
  };

  return {
    replace: true,
    restrict: 'E',
    templateUrl: '/templates/work_packages/watchers/lookup.html',
    link: workPackageWatchersLookupController,
    scope: {
      watchers: '='
    }
  };
};