# frozen_string_literal: true

module TagGuardian
  def can_see_tag?(tag)
    return false if !SiteSetting.tagging_enabled
    return false if hidden_tag_names.include?(tag.name)
    true
  end

  def can_create_tag?
    SiteSetting.tagging_enabled && @user.in_any_groups?(SiteSetting.create_tag_allowed_groups_map)
  end

  def can_edit_tag_names?
    SiteSetting.tagging_enabled && @user.in_any_groups?(SiteSetting.edit_tags_allowed_groups_map)
  end

  def can_edit_tag?(tag)
    can_edit_tag_names? && can_see_tag?(tag)
  end

  def can_tag_topics?
    SiteSetting.tagging_enabled && @user.in_any_groups?(SiteSetting.tag_topic_allowed_groups_map)
  end

  def can_tag_pms?
    return false if !SiteSetting.tagging_enabled
    return false if !authenticated?
    return true if @user.is_system_user?

    @user.in_any_groups?(SiteSetting.pm_tags_allowed_for_groups_map)
  end

  def can_admin_tags?
    is_staff? && SiteSetting.tagging_enabled
  end

  def can_admin_tag_groups?
    is_staff? && SiteSetting.tagging_enabled
  end

  def visible_tag_ids
    @visible_tag_ids ||= DiscourseTagging.visible_tags(self).pluck(:id).to_set
  end

  def hidden_tag_names
    @hidden_tag_names ||=
      if SiteSetting.tagging_enabled && !is_admin?
        DiscourseTagging.hidden_tag_names(self)
      else
        []
      end
  end
end