Module: GenerateImage

Defined in:
lib/generate_image.rb,
lib/generate_image/version.rb

Defined Under Namespace

Classes: RequestFailed

Constant Summary collapse

API_ENDPOINT = 
'https://api.openai.com/v1/images/generations'
IMAGE_MODEL_NAME = 
'image-alpha-001'
TEXT_MODEL_NAME = 
'text-davinci-002'
API_KEY = 
ENV['DALL_E_API_KEY']
VERSION = 
"1.0.2"

Class Method Summary collapse

Class Method Details

.generate_image(text, options = {}) ⇒ Object 



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# File 'lib/generate_image.rb', line 10

def generate_image(text, options = {})
  unless API_KEY
    raise StandardError, "API Key not set"
  end
  uri = URI(API_ENDPOINT)
  request = Net::HTTP::Post.new(uri)
  request['Content-Type'] = 'application/json'
  request['Authorization'] = "Bearer #{API_KEY}"
  request.body = {
    model: options[:model] || IMAGE_MODEL_NAME,
    prompt: text,
    num_images: options[:num_images] || 1,
    size: options[:size] || '1024x1024',
    response_format: options[:response_format] || 'url',
    style: options[:style] || nil,
    scale: options[:scale] || 1,
    seed: options[:seed] || nil,
    quality: options[:quality] || 100,
    text_model: options[:text_model] || 'text-davinci-002',
    text_prompt: options[:text_prompt] || nil,
    text_length: options[:text_length] || nil
  }.to_json

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

  if response.code == '200'
    if options[:response_format] == 'base64'
      image_base64 = JSON.parse(response.body)['data'][0]['base64']
      return { image_base64: image_base64 }
    else
      image_url = JSON.parse(response.body)['data'][0]['url']
      return { image_url: image_url }
    end
  else
    raise RequestFailed, "Failed to generate image. Response code: #{response.code}. Response body: #{response.body}"
  end
end