Class: GenerateImage::Client

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

Constant Summary collapse

API_ENDPOINT = 
'https://api.openai.com/v1/images/generations'
IMAGE_MODEL_NAME = 
'image-alpha-001'
TEXT_MODEL_NAME = 
'text-davinci-002'

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(api_key = nil) ⇒ Client

Returns a new instance of Client.

Raises:

  • (StandardError) 


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# File 'lib/generate_image.rb', line 14

def initialize(api_key = nil)
  @api_key = api_key || ENV['DALL_E_API_KEY']
  raise StandardError, "API Key not set" unless @api_key
end

Instance Attribute Details

#api_key ⇒ Object

Returns the value of attribute api_key.



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# File 'lib/generate_image.rb', line 12

def api_key
  @api_key
end

Instance Method Details

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



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# File 'lib/generate_image.rb', line 19

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 = {
    prompt: text,
    n: options[:num_images] || 1,
    size: options[:size] || '512x512',
    response_format: options[:response_format] || 'url',
  }.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