Class: Rager::ImageGen::Providers::Replicate

Inherits:
Abstract
  • Object
show all
Extended by:
T::Sig
Defined in:
lib/rager/image_gen/providers/replicate.rb

Instance Method Summary collapse

Instance Method Details

#image_gen(prompt, options) ⇒ Object

Raises:



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# File 'lib/rager/image_gen/providers/replicate.rb', line 14

def image_gen(prompt, options)
  url = "https://api.replicate.com/v1/models/#{options.model}/predictions"
  api_key = options.api_key || ENV["REPLICATE_API_KEY"]
  raise Rager::Errors::MissingCredentialsError.new("Replicate", "REPLICATE_API_KEY") if api_key.nil?

  headers = {
    "Authorization" => "Bearer #{api_key}",
    "Content-Type" => "application/json",
    "Prefer" => "wait"
  }

  body = {
    input: {
      prompt: prompt
    }
  }
  body[:input][:seed] = options.seed unless options.seed.nil?

  request = Rager::Http::Request.new(
    url: url,
    verb: Rager::Http::Verb::Post,
    headers: headers,
    body: body.to_json
  )

  http_adapter = Rager.config.http_adapter
  response = http_adapter.make_request(request)
  response_body = T.cast(T.must(response.body), String)

  raise Rager::Errors::HttpError.new(http_adapter, response.status, response_body) unless [200, 201].include?(response.status)

  begin
    parsed = JSON.parse(response_body)
    parsed.fetch("output").first
  rescue JSON::ParserError, KeyError => e
    raise Rager::Errors::ParseError.new(e.message, response_body)
  end
end