# frozen_string_literal: true

# Redmine - project management software
# Copyright (C) 2006-  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(' ')
    icon = watched ? 'unwatch' : 'watch'
    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 sprite_icon(icon, 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", object.project)
    content = ''.html_safe
    scope = object.watcher_users
    scope = scope.includes(:email_address) if Setting.gravatar_enabled?
    lis = scope.sorted.collect do |user|
      s = ''.html_safe
      s << avatar(user, :size => "16").to_s if user.is_a?(User)
      s << link_to_principal(user, class: user.class.to_s.downcase)
      if object.respond_to?(:visible?) && user.is_a?(User) && !object.visible?(user)
        s << content_tag('span', sprite_icon('warning', l(:notice_invalid_watcher)), class: 'icon-only icon-warning', title: l(:notice_invalid_watcher))
      end
      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(sprite_icon('del', 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.watcher_user_ids.include?(user.id) : 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
