/**
 * @license
 * Copyright (C) 2017 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 GrRepoList extends Polymer.mixinBehaviors( [
    Gerrit.ListViewBehavior,
  ], Polymer.GestureEventListeners(
      Polymer.LegacyElementMixin(
          Polymer.Element))) {
    static get is() { return 'gr-repo-list'; }

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

        /**
         * Offset of currently visible query results.
         */
        _offset: Number,
        _path: {
          type: String,
          readOnly: true,
          value: '/admin/repos',
        },
        _hasNewRepoName: Boolean,
        _createNewCapability: {
          type: Boolean,
          value: false,
        },
        _repos: Array,

        /**
         * Because  we request one more than the projectsPerPage, _shownProjects
         * maybe one less than _projects.
         * */
        _shownRepos: {
          type: Array,
          computed: 'computeShownItems(_repos)',
        },

        _reposPerPage: {
          type: Number,
          value: 25,
        },

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

    /** @override */
    attached() {
      super.attached();
      this._getCreateRepoCapability();
      this.fire('title-change', {title: 'Repos'});
      this._maybeOpenCreateOverlay(this.params);
    }

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

      return this._getRepos(this._filter, this._reposPerPage,
          this._offset);
    }

    /**
     * Opens the create overlay if the route has a hash 'create'
     *
     * @param {!Object} params
     */
    _maybeOpenCreateOverlay(params) {
      if (params && params.openCreateModal) {
        this.$.createOverlay.open();
      }
    }

    _computeRepoUrl(name) {
      return this.getUrl(this._path + '/', name);
    }

    _computeChangesLink(name) {
      return Gerrit.Nav.getUrlForProjectChanges(name);
    }

    _getCreateRepoCapability() {
      return this.$.restAPI.getAccount().then(account => {
        if (!account) { return; }
        return this.$.restAPI.getAccountCapabilities(['createProject'])
            .then(capabilities => {
              if (capabilities.createProject) {
                this._createNewCapability = true;
              }
            });
      });
    }

    _getRepos(filter, reposPerPage, offset) {
      this._repos = [];
      return this.$.restAPI.getRepos(filter, reposPerPage, offset)
          .then(repos => {
            // Late response.
            if (filter !== this._filter || !repos) { return; }
            this._repos = repos;
            this._loading = false;
          });
    }

    _refreshReposList() {
      this.$.restAPI.invalidateReposCache();
      return this._getRepos(this._filter, this._reposPerPage,
          this._offset);
    }

    _handleCreateRepo() {
      this.$.createNewModal.handleCreateRepo().then(() => {
        this._refreshReposList();
      });
    }

    _handleCloseCreate() {
      this.$.createOverlay.close();
    }

    _handleCreateClicked() {
      this.$.createOverlay.open();
    }

    _readOnly(item) {
      return item.state === 'READ_ONLY' ? 'Y' : '';
    }

    _computeWeblink(repo) {
      if (!repo.web_links) { return ''; }
      const webLinks = repo.web_links;
      return webLinks.length ? webLinks : null;
    }
  }

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