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# frozen_string_literal: true
module IssuableLinks
class CreateService < BaseService
include IncidentManagement::UsageData
attr_reader :issuable, :current_user, :params
def initialize(issuable, user, params)
@issuable = issuable
@current_user = user
@params = params.dup
end
def execute
# If ALL referenced issues are already assigned to the given epic it renders a conflict status,
# otherwise create issue links for the issues which
# are still not assigned and return success message.
if render_conflict_error?
return error(issuables_assigned_message, 409)
end
if render_not_found_error?
return error(issuables_not_found_message, 404)
end
@errors = []
create_links
if @errors.present?
return error(@errors.join('. '), 422)
end
track_event
success
end
private
def render_conflict_error?
referenced_issuables.present? && (referenced_issuables - previous_related_issuables).empty?
end
def render_not_found_error?
linkable_issuables(referenced_issuables).empty?
end
def create_links
objects = linkable_issuables(referenced_issuables)
link_issuables(objects)
end
def link_issuables(target_issuables)
target_issuables.each do |referenced_object|
link = relate_issuables(referenced_object)
unless link.valid?
@errors << _("%{ref} cannot be added: %{error}") % {
ref: referenced_object.to_reference,
error: link.errors.messages.values.flatten.to_sentence
}
end
end
end
def referenced_issuables
@referenced_issuables ||= begin
target_issuable = params[:target_issuable]
if params[:issuable_references].present?
extract_references
elsif target_issuable
[target_issuable]
else
[]
end
end
end
def extract_references
issuable_references = params[:issuable_references]
text = issuable_references.join(' ')
extractor = Gitlab::ReferenceExtractor.new(issuable.project, current_user)
extractor.analyze(text, extractor_context)
references(extractor)
end
def references(extractor)
extractor.issues
end
def extractor_context
{}
end
def linkable_issuables(objects)
raise NotImplementedError
end
def previous_related_issuables
raise NotImplementedError
end
def relate_issuables(referenced_object)
raise NotImplementedError
end
def issuables_assigned_message
_("Issue(s) already assigned")
end
def issuables_not_found_message
_("No matching issue found. Make sure that you are adding a valid issue URL.")
end
end
end
IssuableLinks::CreateService.prepend_mod_with('IssuableLinks::CreateService')
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