/**
 * @copyright Copyright (c) 2019 John Molakvoæ <skjnldsv@protonmail.com>
 *
 * @author John Molakvoæ <skjnldsv@protonmail.com>
 *
 * @license GNU AGPL version 3 or any later version
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 *
 */
import Vue from 'vue'
import { sortCompare } from '../utils/fileUtils'

const state = {
	tags: {},
	names: {},
}

const mutations = {
	/**
	 * Order and save tags
	 *
	 * @param {Object} state vuex state
	 * @param {Array} tags the tags list
	 */
	updateTags(state, tags) {
		if (tags.length > 0) {
			// sort by basename
			const list = tags.sort((a, b) => sortCompare(a, b, 'displayName'))

			// store tag and its index
			list.forEach(tag => {
				Vue.set(state.tags, tag.id, tag)
				Vue.set(state.tags[tag.id], 'files', [])
				Vue.set(state.names, tag.displayName, tag.id)
			})
		}
	},

	/**
	 * Update tag files list
	 *
	 * @param {Object} state vuex state
	 * @param {Object} data destructuring object
	 * @param {number} data.id current tag id
	 * @param {Object[]} data.files list of files
	 */
	updateTag(state, { id, files }) {
		// sort by last modified
		const list = files.sort((a, b) => sortCompare(a, b, 'lastmod'))

		// overwrite list
		Vue.set(state.tags[id], 'files', list.map(file => file.id))
	},
}

const getters = {
	tags: state => state.tags,
	tagsNames: state => state.names,
	tag: state => id => state.tags[id],
	tagId: state => name => state.names[name],
}

const actions = {
	/**
	 * Update files and folders
	 *
	 * @param {Object} context vuex context
	 * @param {Array} tags the tag list
	 */
	updateTags(context, tags) {
		context.commit('updateTags', tags)
	},

	/**
	 * Update tag files list
	 *
	 * @param {Object} context vuex context
	 * @param {Object} data destructuring object
	 * @param {number} data.id current tag id
	 * @param {Object[]} data.files list of files
	 */
	updateTag(context, { id, files }) {
		context.commit('updateTag', { id, files })
	},
}

export default { state, mutations, getters, actions }