Class: BatchLoaders::MergeRequestDiffSummaryBatchLoader

Inherits:
Object
  • Object
show all
Defined in:
app/graphql/batch_loaders/merge_request_diff_summary_batch_loader.rb

Constant Summary collapse

NIL_STATS =
{ additions: 0, deletions: 0, file_count: 0 }.freeze

Class Method Summary collapse

Class Method Details

.load_for(merge_request) ⇒ Object



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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
                    ) do |_, x, y|
                      x + y
                    end
                  end
                end

      loader.call(merge_request, summary)
    end
  end
end