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# File 'app/graphql/batch_loaders/merge_request_diff_summary_batch_loader.rb', line 7
def self.load_for(merge_request)
BatchLoader::GraphQL.for(merge_request).batch(key: :diff_stats_summary) do |merge_requests, loader, args|
Preloaders::MergeRequestDiffPreloader.new(merge_requests).preload_all
merge_requests.each do |merge_request|
metrics = merge_request.metrics
summary = if metrics && metrics.added_lines && metrics.removed_lines
{ additions: metrics.added_lines, deletions: metrics.removed_lines, file_count: merge_request.merge_request_diff&.files_count || 0 }
elsif merge_request.diff_stats.blank?
NIL_STATS
else
merge_request.diff_stats.each_with_object(NIL_STATS.dup) do |status, summary|
summary.merge!(additions: status.additions, deletions: status.deletions, file_count: 1) { |_, x, y| x + y }
end
end
loader.call(merge_request, summary)
end
end
end
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