/**
 * @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.
 */
import '../../../scripts/bundled-polymer.js';

import '@polymer/iron-input/iron-input.js';
import '@polymer/paper-toggle-button/paper-toggle-button.js';
import '../../../behaviors/gr-repo-plugin-config-behavior/gr-repo-plugin-config-behavior.js';
import '../../../styles/gr-form-styles.js';
import '../../../styles/gr-subpage-styles.js';
import '../../../styles/shared-styles.js';
import '../../shared/gr-icons/gr-icons.js';
import '../../shared/gr-select/gr-select.js';
import '../../shared/gr-tooltip-content/gr-tooltip-content.js';
import '../gr-plugin-config-array-editor/gr-plugin-config-array-editor.js';
import {dom} from '@polymer/polymer/lib/legacy/polymer.dom.js';
import {mixinBehaviors} from '@polymer/polymer/lib/legacy/class.js';
import {GestureEventListeners} from '@polymer/polymer/lib/mixins/gesture-event-listeners.js';
import {LegacyElementMixin} from '@polymer/polymer/lib/legacy/legacy-element-mixin.js';
import {PolymerElement} from '@polymer/polymer/polymer-element.js';
import {htmlTemplate} from './gr-repo-plugin-config_html.js';

/**
 * @appliesMixin Gerrit.RepoPluginConfigMixin
 * @extends Polymer.Element
 */
class GrRepoPluginConfig extends mixinBehaviors( [
  Gerrit.RepoPluginConfig,
], GestureEventListeners(
    LegacyElementMixin(
        PolymerElement))) {
  static get template() { return htmlTemplate; }

  static get is() { return 'gr-repo-plugin-config'; }
  /**
   * Fired when the plugin config changes.
   *
   * @event plugin-config-changed
   */

  static get properties() {
    return {
    /** @type {?} */
      pluginData: Object,
      /** @type {Array} */
      _pluginConfigOptions: {
        type: Array,
        computed: '_computePluginConfigOptions(pluginData.*)',
      },
    };
  }

  _computePluginConfigOptions(dataRecord) {
    if (!dataRecord || !dataRecord.base || !dataRecord.base.config) {
      return [];
    }
    const {config} = dataRecord.base;
    return Object.keys(config)
        .map(_key => { return {_key, info: config[_key]}; });
  }

  _isArray(type) {
    return type === this.ENTRY_TYPES.ARRAY;
  }

  _isBoolean(type) {
    return type === this.ENTRY_TYPES.BOOLEAN;
  }

  _isList(type) {
    return type === this.ENTRY_TYPES.LIST;
  }

  _isString(type) {
    // Treat numbers like strings for simplicity.
    return type === this.ENTRY_TYPES.STRING ||
        type === this.ENTRY_TYPES.INT ||
        type === this.ENTRY_TYPES.LONG;
  }

  _computeDisabled(editable) {
    return editable === 'false';
  }

  /**
   * @param {string} value - fallback to 'false' if undefined
   */
  _computeChecked(value = 'false') {
    return JSON.parse(value);
  }

  _handleStringChange(e) {
    const el = dom(e).localTarget;
    const _key = el.getAttribute('data-option-key');
    const configChangeInfo =
        this._buildConfigChangeInfo(el.value, _key);
    this._handleChange(configChangeInfo);
  }

  _handleListChange(e) {
    const el = dom(e).localTarget;
    const _key = el.getAttribute('data-option-key');
    const configChangeInfo =
        this._buildConfigChangeInfo(el.value, _key);
    this._handleChange(configChangeInfo);
  }

  _handleBooleanChange(e) {
    const el = dom(e).localTarget;
    const _key = el.getAttribute('data-option-key');
    const configChangeInfo =
        this._buildConfigChangeInfo(JSON.stringify(el.checked), _key);
    this._handleChange(configChangeInfo);
  }

  _buildConfigChangeInfo(value, _key) {
    const info = this.pluginData.config[_key];
    info.value = value;
    return {
      _key,
      info,
      notifyPath: `${_key}.value`,
    };
  }

  _handleArrayChange({detail}) {
    this._handleChange(detail);
  }

  _handleChange({_key, info, notifyPath}) {
    const {name, config} = this.pluginData;

    /** @type {Object} */
    const detail = {
      name,
      config: Object.assign(config, {[_key]: info}, {}),
      notifyPath: `${name}.${notifyPath}`,
    };

    this.dispatchEvent(new CustomEvent(
        this.PLUGIN_CONFIG_CHANGED, {detail, bubbles: true, composed: true}));
  }
}

customElements.define(GrRepoPluginConfig.is, GrRepoPluginConfig);