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/**
 * @copyright Copyright (c) 2019 Marco Ambrosini <marcoambrosini@pm.me>
 *
 * @author Marco Ambrosini <marcoambrosini@pm.me>
 *
 * @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 FilesSidebarCallView from './views/FilesSidebarCallView'
import './init'

const isEnabled = function(fileInfo) {
	if (fileInfo && !fileInfo.isDirectory()) {
		return true
	}

	const token = OCA.Talk.store.getters.getToken()

	// If the Talk tab can not be displayed then the current conversation is
	// left; this must be done here because "setFileInfo" will not get
	// called with the new file if the tab can not be displayed.
	if (token) {
		OCA.Talk.store.dispatch('leaveConversation', { token })
	}

	OCA.Talk.store.dispatch('updateTokenAndFileIdForToken', {
		newToken: null,
		newFileId: null,
	})

	return false
}

// It might be enough to keep the instance only in the Tab object itself,
// without using a shared variable that can be destroyed if a new tab is
// mounted and the previous one was not destroyed yet, as the tabs seem to
// always be properly destroyed. However, this is how it is done for tabs in
// server, so it is done here too just to be safe.
let tabInstance = null

window.addEventListener('DOMContentLoaded', () => {
	if (OCA.Files && OCA.Files.Sidebar) {
		OCA.Files.Sidebar.registerSecondaryView(new FilesSidebarCallView())
		OCA.Files.Sidebar.registerTab(new OCA.Files.Sidebar.Tab({
			id: 'chat',
			name: t('spreed', 'Chat'),
			icon: 'icon-talk',
			enabled: isEnabled,

			async mount(el, fileInfo, context) {
				if (tabInstance) {
					tabInstance.$destroy()
				}

				// Dirty hack to force the style on parent component
				const tabChat = document.querySelector('#tab-chat')
				tabChat.style.height = '100%'
				// Remove paddding to maximize space for the chat view
				tabChat.style.padding = '0'

				OCA.Talk.fileInfo = this.fileInfo
				tabInstance = OCA.Talk.newTab()
				tabInstance.$mount(el)
			},
			update(fileInfo) {
				OCA.Talk.fileInfo = fileInfo
			},
			destroy() {
				OCA.Talk.fileInfo = null
				tabInstance.$destroy()
				tabInstance = null
			},
		}))
	}
})