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# frozen_string_literal: true
# Mixin for resolving merge requests. All arguments must be in forms
# that `MergeRequestsFinder` can handle, so you may need to use aliasing.
module ResolvesMergeRequests
extend ActiveSupport::Concern
include LooksAhead
included do
type Types::MergeRequestType, null: true
end
def resolve_with_lookahead(**args)
args[:iids] = Array.wrap(args[:iids]) if args[:iids]
args.compact!
if project && args.keys == [:iids]
batch_load_merge_requests(args[:iids])
else
args[:project_id] ||= project
apply_lookahead(MergeRequestsFinder.new(current_user, args).execute)
end.then(&(single? ? :first : :itself))
end
def ready?(**args)
return early_return if no_results_possible?(args)
super
end
def early_return
[false, single? ? nil : MergeRequest.none]
end
private
def batch_load_merge_requests(iids)
iids.map { |iid| batch_load(iid) }.select(&:itself) # .compact doesn't work on BatchLoader
end
# rubocop: disable CodeReuse/ActiveRecord
def batch_load(iid)
BatchLoader::GraphQL.for(iid.to_s).batch(key: project) do |iids, loader, args|
query = args[:key].merge_requests.where(iid: iids)
apply_lookahead(query).each do |mr|
loader.call(mr.iid.to_s, mr)
end
end
end
# rubocop: enable CodeReuse/ActiveRecord
def unconditional_includes
[:target_project]
end
def preloads
{
assignees: [:assignees],
labels: [:labels],
author: [:author],
milestone: [:milestone],
head_pipeline: [:merge_request_diff, { head_pipeline: [:merge_request] }]
}
end
end
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