Class: N2B::Llm::OpenAi

Inherits:
Object
  • Object
show all
Defined in:
lib/n2b/llm/open_ai.rb

Constant Summary collapse

API_URI = 
URI.parse('https://api.openai.com/v1/chat/completions')

Instance Method Summary collapse

Constructor Details

#initialize(config) ⇒ OpenAi

Returns a new instance of OpenAi.



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# File 'lib/n2b/llm/open_ai.rb', line 11

def initialize(config)
  @config = config
end

Instance Method Details

#analyze_code_diff(prompt_content, expect_json: true) ⇒ Object 



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# File 'lib/n2b/llm/open_ai.rb', line 64

def analyze_code_diff(prompt_content, expect_json: true)
  # This method assumes prompt_content is the full, ready-to-send prompt
  # including all instructions for the LLM (system message, diff, user additions, JSON format).
  request = Net::HTTP::Post.new(API_URI)
  request.content_type = 'application/json'
  request['Authorization'] = "Bearer #{@config['access_key']}"

  body_hash = {
    "model" => get_model_name,
    "messages" => [
      {
        "role" => "user",
        "content" => prompt_content
      }
    ],
    "max_tokens" => @config['max_tokens'] || 1500
  }
  body_hash["response_format"] = { "type" => "json_object" } if expect_json

  request.body = JSON.dump(body_hash)

  response = Net::HTTP.start(API_URI.hostname, API_URI.port, use_ssl: true) do |http|
    http.request(request)
  end

  if response.code != '200'
    raise N2B::LlmApiError.new("LLM API Error: #{response.code} #{response.message} - #{response.body}")
  end

  answer = JSON.parse(response.body)['choices'].first['message']['content']
  answer
end

#get_model_name ⇒ Object 



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# File 'lib/n2b/llm/open_ai.rb', line 15

def get_model_name
  # Resolve model name using the centralized configuration
  model_name = N2B::ModelConfig.resolve_model('openai', @config['model'])
  if model_name.nil? || model_name.empty?
    # Fallback to default if no model specified
    model_name = N2B::ModelConfig.resolve_model('openai', N2B::ModelConfig.default_model('openai'))
  end
  model_name
end

#make_request(content, expect_json: true) ⇒ Object 



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# File 'lib/n2b/llm/open_ai.rb', line 25

def make_request(content, expect_json: true)
  request = Net::HTTP::Post.new(API_URI)
  request.content_type = 'application/json'
  request['Authorization'] = "Bearer #{@config['access_key']}"

  body_hash = {
    "model" => get_model_name,
    "messages" => [
      {
        "role" => "user",
        "content" => content
      }
    ]
  }
  body_hash["response_format"] = { "type" => "json_object" } if expect_json

  request.body = JSON.dump(body_hash)

  response = Net::HTTP.start(API_URI.hostname, API_URI.port, use_ssl: true) do |http|
    http.request(request)
  end

  # check for errors
  if response.code != '200'
    raise N2B::LlmApiError.new("LLM API Error: #{response.code} #{response.message} - #{response.body}")
  end
  answer = JSON.parse(response.body)['choices'].first['message']['content']
  if expect_json
    begin
      # remove everything before the first { and after the last }
      answer = answer.sub(/.*\{(.*)\}.*/m, '{\1}') unless answer.start_with?('{')
      answer = JSON.parse(answer)
    rescue JSON::ParserError
      answer = { 'commands' => answer.split("\n"), explanation: answer }
    end
  end
  answer
end