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# frozen_string_literal: true
module Gitlab
module IssuableMetadata
def issuable_meta_data(issuable_collection, collection_type)
# ActiveRecord uses Object#extend for null relations.
if !(issuable_collection.singleton_class < ActiveRecord::NullRelation) &&
issuable_collection.respond_to?(:limit_value) &&
issuable_collection.limit_value.nil?
raise 'Collection must have a limit applied for preloading meta-data'
end
# map has to be used here since using pluck or select will
# throw an error when ordering issuables by priority which inserts
# a new order into the collection.
# We cannot use reorder to not mess up the paginated collection.
issuable_ids = issuable_collection.map(&:id)
return {} if issuable_ids.empty?
issuable_note_count = ::Note.count_for_collection(issuable_ids, collection_type)
issuable_votes_count = ::AwardEmoji.votes_for_collection(issuable_ids, collection_type)
issuable_merge_requests_count =
if collection_type == 'Issue'
::MergeRequestsClosingIssues.count_for_collection(issuable_ids)
else
[]
end
issuable_ids.each_with_object({}) do |id, issuable_meta|
downvotes = issuable_votes_count.find { |votes| votes.awardable_id == id && votes.downvote? }
upvotes = issuable_votes_count.find { |votes| votes.awardable_id == id && votes.upvote? }
notes = issuable_note_count.find { |notes| notes.noteable_id == id }
merge_requests = issuable_merge_requests_count.find { |mr| mr.first == id }
issuable_meta[id] = ::Issuable::IssuableMeta.new(
upvotes.try(:count).to_i,
downvotes.try(:count).to_i,
notes.try(:count).to_i,
merge_requests.try(:last).to_i
)
end
end
end
end
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