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path: root/app/finders/issues_finder.rb
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# Finders::Issues class
#
# Used to filter Issues collections by set of params
#
# Arguments:
#   current_user - which user use
#   params:
#     scope: 'created-by-me' or 'assigned-to-me' or 'all'
#     state: 'open' or 'closed' or 'all'
#     group_id: integer
#     project_id: integer
#     milestone_title: string
#     assignee_id: integer
#     search: string
#     label_name: string
#     sort: string
#
class IssuesFinder < IssuableFinder
  CONFIDENTIAL_ACCESS_LEVEL = Gitlab::Access::REPORTER

  def klass
    Issue
  end

  def not_restricted_by_confidentiality
    return Issue.where('issues.confidential IS NOT TRUE') if user_cannot_see_confidential_issues?
    return Issue.all if user_can_see_all_confidential_issues?

    Issue.where('
      issues.confidential IS NOT TRUE
      OR (issues.confidential = TRUE
        AND (issues.author_id = :user_id
          OR EXISTS (SELECT TRUE FROM issue_assignees WHERE user_id = :user_id AND issue_id = issues.id)
          OR issues.project_id IN(:project_ids)))',
      user_id: current_user.id,
      project_ids: current_user.authorized_projects(CONFIDENTIAL_ACCESS_LEVEL).select(:id))
  end

  def user_can_see_all_confidential_issues?
    return false unless current_user
    return true if current_user.full_private_access?

    project? &&
      project &&
      project.team.max_member_access(current_user.id) >= CONFIDENTIAL_ACCESS_LEVEL
  end

  def user_cannot_see_confidential_issues?
    current_user.blank?
  end

  private

  def init_collection
    not_restricted_by_confidentiality
  end

  def by_assignee(items)
    if assignee
      items.assigned_to(assignee)
    elsif no_assignee?
      items.unassigned
    elsif assignee_id? || assignee_username? # assignee not found
      items.none
    else
      items
    end
  end

  def item_project_ids(items)
    items&.reorder(nil)&.select(:project_id)
  end
end