/**
 * @license
 * Copyright (C) 2018 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';

  /**
   * @appliesMixin Gerrit.ListViewMixin
   * @extends Polymer.Element
   */
  class GrDocumentationSearch extends Polymer.mixinBehaviors( [
    Gerrit.ListViewBehavior,
  ], Polymer.GestureEventListeners(
      Polymer.LegacyElementMixin(
          Polymer.Element))) {
    static get is() { return 'gr-documentation-search'; }

    static get properties() {
      return {
      /**
       * URL params passed from the router.
       */
        params: {
          type: Object,
          observer: '_paramsChanged',
        },

        _path: {
          type: String,
          readOnly: true,
          value: '/Documentation',
        },
        _documentationSearches: Array,

        _loading: {
          type: Boolean,
          value: true,
        },
        _filter: {
          type: String,
          value: '',
        },
      };
    }

    /** @override */
    attached() {
      super.attached();
      this.dispatchEvent(
          new CustomEvent('title-change', {title: 'Documentation Search'}));
    }

    _paramsChanged(params) {
      this._loading = true;
      this._filter = this.getFilterValue(params);

      return this._getDocumentationSearches(this._filter);
    }

    _getDocumentationSearches(filter) {
      this._documentationSearches = [];
      return this.$.restAPI.getDocumentationSearches(filter)
          .then(searches => {
            // Late response.
            if (filter !== this._filter || !searches) { return; }
            this._documentationSearches = searches;
            this._loading = false;
          });
    }

    _computeSearchUrl(url) {
      if (!url) { return ''; }
      return this.getBaseUrl() + '/' + url;
    }
  }

  customElements.define(GrDocumentationSearch.is, GrDocumentationSearch);
})();