# frozen_string_literal: true

# Redmine - project management software
# Copyright (C) 2006-2019  Jean-Philippe Lang
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

module WatchersHelper

	def watcher_link(objects, user)
		return '' unless user && user.logged?
		objects = Array.wrap(objects)
		return '' unless objects.any?

		watched = Watcher.any_watched?(objects, user)
		css = [watcher_css(objects), watched ? 'icon icon-fav' : 'icon icon-fav-off'].join(' ')
		text = watched ? l(:button_unwatch) : l(:button_watch)
		url = watch_path(
			:object_type => objects.first.class.to_s.underscore,
			:object_id => (objects.size == 1 ? objects.first.id : objects.map(&:id).sort)
		)
		method = watched ? 'delete' : 'post'

		link_to text, url, :remote => true, :method => method, :class => css
	end

	# Returns the css class used to identify watch links for a given +object+
	def watcher_css(objects)
		objects = Array.wrap(objects)
		id = (objects.size == 1 ? objects.first.id : 'bulk')
		"#{objects.first.class.to_s.underscore}-#{id}-watcher"
	end

	# Returns a comma separated list of users watching the given object
	def watchers_list(object)
		remove_allowed = User.current.allowed_to?("delete_#{object.class.name.underscore}_watchers".to_sym, object.project)
		content = ''.html_safe
		lis = object.watcher_users.preload(:email_address).collect do |user|
			s = ''.html_safe
			s << avatar(user, :size => "16").to_s
			s << link_to_user(user, :class => 'user')
			if remove_allowed
				url = { :controller => 'watchers',
						:action => 'destroy',
						:object_type => object.class.to_s.underscore,
						:object_id => object.id,
						:user_id => user }
				s << ' '
				s << link_to(l(:button_delete), url,
							 :remote => true, :method => 'delete',
							 :class => "delete icon-only icon-del",
							 :title => l(:button_delete))
			end
			content << content_tag('li', s, :class => "user-#{user.id}")
		end
		content.present? ? content_tag('ul', content, :class => 'watchers') : content
	end

	def watchers_checkboxes(object, users, checked = nil)
		users.map do |user|
			c = checked.nil? ? object.watched_by?(user) : checked
			tag = check_box_tag 'issue[watcher_user_ids][]', user.id, c, :id => nil
			content_tag 'label', "#{tag} #{h(user)}".html_safe,
						:id => "issue_watcher_user_ids_#{user.id}",
						:class => "floating"
		end.join.html_safe
	end
end
