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# frozen_string_literal: true
# GroupDescendantsFinder
#
# Used to find and filter all subgroups and projects of a passed parent group
# visible to a specified user.
#
# When passing a `filter` param, the search is performed over all nested levels
# of the `parent_group`. All ancestors for a search result are loaded
#
# Arguments:
# current_user: The user for which the children should be visible
# parent_group: The group to find children of
# params:
# Supports all params that the `ProjectsFinder` and `GroupProjectsFinder`
# support.
#
# filter: string - is aliased to `search` for consistency with the frontend
# archived: string - `only` or `true`.
# `non_archived` is passed to the `ProjectFinder`s if none
# was given.
class GroupDescendantsFinder
attr_reader :current_user, :parent_group, :params
def initialize(current_user: nil, parent_group:, params: {})
@current_user = current_user
@parent_group = parent_group
@params = params.reverse_merge(non_archived: params[:archived].blank?, not_aimed_for_deletion: true)
end
def execute
# The children array might be extended with the ancestors of projects and
# subgroups when filtering. In that case, take the maximum so the array does
# not get limited otherwise, allow paginating through all results.
#
all_required_elements = children
if params[:filter]
all_required_elements |= ancestors_of_filtered_subgroups
all_required_elements |= ancestors_of_filtered_projects
end
total_count = [all_required_elements.size, paginator.total_count].max
Kaminari.paginate_array(all_required_elements, total_count: total_count)
end
def has_children?
projects.any? || subgroups.any?
end
private
def children
@children ||= paginator.paginate(params[:page])
end
def paginator
@paginator ||= Gitlab::MultiCollectionPaginator.new(
subgroups,
projects.with_route,
per_page: params[:per_page]
)
end
def direct_child_groups
# rubocop: disable CodeReuse/Finder
GroupsFinder.new(current_user,
parent: parent_group,
all_available: true).execute
# rubocop: enable CodeReuse/Finder
end
# rubocop: disable CodeReuse/ActiveRecord
def all_visible_descendant_groups
# rubocop: disable CodeReuse/Finder
groups_table = Group.arel_table
visible_to_user = groups_table[:visibility_level]
.in(Gitlab::VisibilityLevel.levels_for_user(current_user))
if current_user
authorized_groups = GroupsFinder.new(current_user,
all_available: false)
.execute.arel.as('authorized')
authorized_to_user = groups_table.project(1).from(authorized_groups)
.where(authorized_groups[:id].eq(groups_table[:id]))
.exists
visible_to_user = visible_to_user.or(authorized_to_user)
end
parent_group.descendants.where(visible_to_user)
# rubocop: enable CodeReuse/Finder
end
# rubocop: enable CodeReuse/ActiveRecord
def subgroups_matching_filter
all_visible_descendant_groups
.search(params[:filter])
end
# When filtering we want all to preload all the ancestors upto the specified
# parent group.
#
# - root
# - subgroup
# - nested-group
# - project
#
# So when searching 'project', on the 'subgroup' page we want to preload
# 'nested-group' but not 'subgroup' or 'root'
# rubocop: disable CodeReuse/ActiveRecord
def ancestors_of_groups(base_for_ancestors)
group_ids = base_for_ancestors.except(:select, :sort).select(:id)
groups = Group.where(id: group_ids)
if Feature.enabled?(:linear_group_descendants_finder_upto, current_user, default_enabled: :yaml)
groups.self_and_ancestors(upto: parent_group.id)
else
Gitlab::ObjectHierarchy.new(groups).base_and_ancestors(upto: parent_group.id)
end
end
# rubocop: enable CodeReuse/ActiveRecord
# rubocop: disable CodeReuse/ActiveRecord
def ancestors_of_filtered_projects
projects_to_load_ancestors_of = projects.where.not(namespace: parent_group)
groups_to_load_ancestors_of = Group.where(id: projects_to_load_ancestors_of.select(:namespace_id))
ancestors_of_groups(groups_to_load_ancestors_of)
.with_selects_for_list(archived: params[:archived])
end
# rubocop: enable CodeReuse/ActiveRecord
def ancestors_of_filtered_subgroups
ancestors_of_groups(subgroups)
.with_selects_for_list(archived: params[:archived])
end
def subgroups
# When filtering subgroups, we want to find all matches within the tree of
# descendants to show to the user
groups = if params[:filter]
subgroups_matching_filter
else
direct_child_groups
end
groups.with_selects_for_list(archived: params[:archived]).order_by(sort)
end
# rubocop: disable CodeReuse/Finder
def direct_child_projects
GroupProjectsFinder.new(group: parent_group, current_user: current_user, params: params, options: { only_owned: true })
.execute
end
# rubocop: enable CodeReuse/Finder
# Finds all projects nested under `parent_group` or any of its descendant
# groups
# rubocop: disable CodeReuse/ActiveRecord
def projects_matching_filter
# rubocop: disable CodeReuse/Finder
projects_nested_in_group = Project.where(namespace_id: parent_group.self_and_descendants.as_ids)
params_with_search = params.merge(search: params[:filter])
ProjectsFinder.new(params: params_with_search,
current_user: current_user,
project_ids_relation: projects_nested_in_group).execute
# rubocop: enable CodeReuse/Finder
end
# rubocop: enable CodeReuse/ActiveRecord
def projects
projects = if params[:filter]
projects_matching_filter
else
direct_child_projects
end
projects.with_route.order_by(sort)
end
def sort
params.fetch(:sort, 'name_asc')
end
# rubocop: disable CodeReuse/ActiveRecord
def hierarchy_for_parent
@hierarchy ||= Gitlab::ObjectHierarchy.new(Group.where(id: parent_group.id))
end
# rubocop: enable CodeReuse/ActiveRecord
end
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