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# frozen_string_literal: true
module WorkItems
class ParentLink < ApplicationRecord
self.table_name = 'work_item_parent_links'
MAX_CHILDREN = 100
PARENT_TYPES = [:issue, :incident].freeze
belongs_to :work_item
belongs_to :work_item_parent, class_name: 'WorkItem'
validates :work_item_parent, presence: true
validates :work_item, presence: true, uniqueness: true
validate :validate_hierarchy_restrictions
validate :validate_cyclic_reference
validate :validate_same_project
validate :validate_max_children
validate :validate_confidentiality
scope :for_parents, ->(parent_ids) { where(work_item_parent_id: parent_ids) }
class << self
def has_public_children?(parent_id)
joins(:work_item).where(work_item_parent_id: parent_id, 'issues.confidential': false).exists?
end
def has_confidential_parent?(id)
link = find_by_work_item_id(id)
return false unless link
link.work_item_parent.confidential?
end
end
private
def validate_same_project
return if work_item.nil? || work_item_parent.nil?
if work_item.resource_parent != work_item_parent.resource_parent
errors.add :work_item_parent, _('parent must be in the same project as child.')
end
end
def validate_max_children
return unless work_item_parent
max = persisted? ? MAX_CHILDREN : MAX_CHILDREN - 1
if work_item_parent.child_links.count > max
errors.add :work_item_parent, _('parent already has maximum number of children.')
end
end
def validate_confidentiality
return unless work_item_parent && work_item
if work_item_parent.confidential? && !work_item.confidential?
errors.add :work_item, _("cannot assign a non-confidential work item to a confidential "\
"parent. Make the work item confidential and try again.")
end
end
def validate_hierarchy_restrictions
return unless work_item && work_item_parent
restriction = ::WorkItems::HierarchyRestriction
.find_by_parent_type_id_and_child_type_id(work_item_parent.work_item_type_id, work_item.work_item_type_id)
if restriction.nil?
errors.add :work_item, _('is not allowed to add this type of parent')
return
end
validate_depth(restriction.maximum_depth)
end
def validate_depth(depth)
return unless depth
return if work_item.work_item_type_id != work_item_parent.work_item_type_id
if work_item_parent.same_type_base_and_ancestors.count + work_item.same_type_descendants_depth > depth
errors.add :work_item, _('reached maximum depth')
end
end
def validate_cyclic_reference
return unless work_item_parent&.id && work_item&.id
if work_item.id == work_item_parent.id
errors.add :work_item, _('is not allowed to point to itself')
end
if work_item_parent.ancestors.detect { |ancestor| work_item.id == ancestor.id }
errors.add :work_item, _('is already present in ancestors')
end
end
end
end
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