/**
 * @license
 * 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';

  /** @extends Polymer.Element */
  class GrCommitInfo extends Polymer.GestureEventListeners(
      Polymer.LegacyElementMixin(
          Polymer.Element)) {
    static get is() { return 'gr-commit-info'; }

    static get properties() {
      return {
        change: Object,
        /** @type {?} */
        commitInfo: Object,
        serverConfig: Object,
        _showWebLink: {
          type: Boolean,
          computed: '_computeShowWebLink(change, commitInfo, serverConfig)',
        },
        _webLink: {
          type: String,
          computed: '_computeWebLink(change, commitInfo, serverConfig)',
        },
      };
    }

    _getWeblink(change, commitInfo, config) {
      return Gerrit.Nav.getPatchSetWeblink(
          change.project,
          commitInfo.commit,
          {
            weblinks: commitInfo.web_links,
            config,
          });
    }

    _computeShowWebLink(change, commitInfo, serverConfig) {
      // Polymer 2: check for undefined
      if ([change, commitInfo, serverConfig].some(arg => arg === undefined)) {
        return undefined;
      }

      const weblink = this._getWeblink(change, commitInfo, serverConfig);
      return !!weblink && !!weblink.url;
    }

    _computeWebLink(change, commitInfo, serverConfig) {
      // Polymer 2: check for undefined
      if ([change, commitInfo, serverConfig].some(arg => arg === undefined)) {
        return undefined;
      }

      const {url} = this._getWeblink(change, commitInfo, serverConfig) || {};
      return url;
    }

    _computeShortHash(commitInfo) {
      const {name} =
            this._getWeblink(this.change, commitInfo, this.serverConfig) || {};
      return name;
    }
  }

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