Module: Commiti::DiffSummarizer::FallbackBuilder

Included in:
Commiti::DiffSummarizer
Defined in:
lib/services/diff_summarization/fallback_builder.rb

Instance Method Summary collapse

Instance Method Details

#fallback_summary(diff, chunks: nil) ⇒ Object 



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# File 'lib/services/diff_summarization/fallback_builder.rb', line 13

def fallback_summary(diff, chunks: nil)
  parsed_chunks = chunks || Commiti::DiffParser.split_by_file(diff)
  files = []

  parsed_chunks.each do |chunk|
    current = {
      path: chunk[:path].to_s,
      additions: 0,
      deletions: 0,
      status: 'modified'
    }

    chunk[:diff].to_s.each_line do |line|
      stripped = line.strip
      current[:status] = 'added' if stripped.start_with?('new file mode')
      current[:status] = 'deleted' if stripped.start_with?('deleted file mode')
      current[:status] = 'renamed' if stripped.start_with?('rename from ') || stripped.start_with?('rename to ')

      next if line.start_with?('diff --git ', '+++', '---', '@@')

      current[:additions] += 1 if line.start_with?('+')
      current[:deletions] += 1 if line.start_with?('-')
    end

    files << current
  end

  return diff.to_s[0, FALLBACK_BYTES] if files.empty?

  lines = []
  lines << '### Diff Overview'
  lines << "- Total files changed: #{files.length}"
  lines << ''

  files.first(MAX_FILES_IN_SUMMARY).each do |file|
    lines << "### #{file[:path]}"
    lines << "- Status: #{file[:status]}"
    lines << "- Added lines: #{file[:additions]}"
    lines << "- Removed lines: #{file[:deletions]}"
    lines << ''
  end

  lines << "...and #{files.length - MAX_FILES_IN_SUMMARY} more files" if files.length > MAX_FILES_IN_SUMMARY

  lines.join("\n").strip
end

#mechanical_summary(diff) ⇒ Object 



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# File 'lib/services/diff_summarization/fallback_builder.rb', line 6

def mechanical_summary(diff)
  additions = diff.to_s.each_line.count { |line| line.start_with?('+') && !line.start_with?('+++') }
  deletions = diff.to_s.each_line.count { |line| line.start_with?('-') && !line.start_with?('---') }
  hunks = diff.to_s.each_line.count { |line| line.start_with?('@@') }
  "- #{additions} additions, #{deletions} deletions across #{hunks} hunk(s)"
end