Class: Commiti::MessageGenerator

Inherits:
Object
  • Object
show all
Defined in:
lib/services/message_generator.rb

Constant Summary collapse

COMMIT_PREFIX_ERROR = 
'First line must start with a conventional commit type (feat:, fix:, etc.).'
DEFAULT_COMMIT_SUBJECT = 
'update project files'
COMMIT_PREFIX_PATTERN = 
/\A(feat|fix|chore|refactor|docs|style|test|perf|ci|build|revert)(\([^)]+\))?!?\s*:?\s*/i

Instance Method Summary collapse

Constructor Details

#initialize(flow_type:, run_stage:) ⇒ MessageGenerator

Returns a new instance of MessageGenerator.



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# File 'lib/services/message_generator.rb', line 9

def initialize(flow_type:, run_stage:)
  @flow_type = flow_type
  @run_stage = run_stage
end

Instance Method Details

#generate_candidates(client:, prompt:, diff_metadata:, count:, model:) ⇒ Object 



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# File 'lib/services/message_generator.rb', line 14

def generate_candidates(client:, prompt:, diff_metadata:, count:, model:)
  (1..count).map do |index|
    puts "\nGenerating candidate #{index}/#{count}..."
    generate_with_quality_check(client: client, prompt: prompt, diff_metadata: diff_metadata, model: model)
  end
end

#generate_with_quality_check(client:, prompt:, diff_metadata:, model:) ⇒ Object 



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# File 'lib/services/message_generator.rb', line 21

def generate_with_quality_check(client:, prompt:, diff_metadata:, model:)
  raw = run_stage.call("Generating #{flow_type} with Google AI") do
    client.generate(
      system: prompt[:system],
      user: prompt[:user],
      model: model,
      timeout_seconds: 300,
      open_timeout_seconds: 10
    )
  end

  message = clean_output(raw)
  reason = invalid_generation_reason(message: message, diff_metadata: diff_metadata)
  return message if reason.nil?

  puts "\nGenerated output looked weak: #{reason}"
  puts "Retrying once with stronger constraints...\n"

  retry_user = <<~MSG
    #{prompt[:user].rstrip}

    Your previous draft was invalid: #{reason}
    Rewrite from scratch using only the provided diff content.
    Do not claim there were no changes if files were changed.
  MSG

  retried = run_stage.call("Regenerating #{flow_type} with stricter prompt") do
    client.generate(
      system: prompt[:system],
      user: retry_user,
      model: model,
      timeout_seconds: 300,
      open_timeout_seconds: 10
    )
  end

  retried_message = clean_output(retried)
  retry_reason = invalid_generation_reason(message: retried_message, diff_metadata: diff_metadata)
  return retried_message if retry_reason.nil?

  if flow_type == :commit
    normalized_commit = normalize_commit_with_prefix(retried_message, diff_metadata: diff_metadata)
    return normalized_commit unless normalized_commit.nil?
  end

  raise "Generated #{flow_type} is still invalid after retry: #{retry_reason}"
end