/*
 * Copyright (c) 2010-2018 Tim Düsterhus.
 *
 * Use of this software is governed by the Business Source License
 * included in the LICENSE file.
 *
 * Change Date: 2022-11-27
 *
 * On the date above, in accordance with the Business Source
 * License, use of this software will be governed by version 2
 * or later of the General Public License.
 */

define([ 'WoltLabSuite/Core/Dom/Traverse'
       , 'WoltLabSuite/Core/Dom/Util'
       , 'WoltLabSuite/Core/Ui/Dropdown/Simple'
       ], function (DomTraverse, DomUtil, SimpleDropdown) {
	"use strict";

	const DEPENDENCIES = [ 'ProfileStore', 'Template.UserListDropdownMenuItems', 'bottle' ]
	class UserActionDropdownHandler {
		constructor(profiles, dropdownTemplate, bottle) {
			this.profiles          = profiles
			this.dropdownTemplate  = dropdownTemplate
			this.bottle            = bottle

			this.container = elById('main')
		}

		bootstrap() {
			this.container.addEventListener('click', this.onClick.bind(this))
		}

		onClick(event) {
			const userElement = event.target.classList.contains('jsUserActionDropdown') ? event.target : DomTraverse.parentByClass(event.target, 'jsUserActionDropdown', this.container)

			if (!userElement) return

			event.preventDefault()
			event.stopPropagation()

			const user = this.profiles.get(parseInt(userElement.dataset.userId, 10))
			if (user == null) {
				throw new Error('Unreachable')
			}

			// Note: We would usually use firstElementChild here, but this
			//       is not supported in Safari and Edge
			const dropdown = DomUtil.createFragmentFromHtml(this.dropdownTemplate.fetch({ user })).querySelector('*')

			Array.from(elBySelAll('[data-module]', dropdown)).forEach(element => {
				const moduleName = element.dataset.module
				let userAction
				if (!this.bottle.container.UserAction || (userAction = this.bottle.container.UserAction[`${moduleName.replace(/\./g, '-')}`]) == null) {
					this.bottle.factory(`UserAction.${moduleName.replace(/\./g, '-')}`, _ => {
						const UserAction = require(moduleName)
						const deps = this.bottle.digest(UserAction.DEPENDENCIES || [])

						return new UserAction(...deps)
					})

					userAction = this.bottle.container.UserAction[`${moduleName.replace(/\./g, '-')}`]
				}

				element.addEventListener(WCF_CLICK_EVENT, (event) => userAction.onClick(user, event))
			})

			SimpleDropdown.initFragment(userElement, dropdown)
			SimpleDropdown.registerCallback(userElement.id, (container, action) => {
				if (action === 'close') {
					SimpleDropdown.destroy(container)
				}
			})
			SimpleDropdown.toggleDropdown(userElement.id)
		}
	}
	UserActionDropdownHandler.DEPENDENCIES = DEPENDENCIES

	return UserActionDropdownHandler
});