Class: Rager::Image::Providers::Replicate

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

Instance Method Summary collapse

Instance Method Details

#image(prompt, options) ⇒ Object 



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

def image(prompt, options)
  api_key = options.api_key || ENV["REPLICATE_API_KEY"]
  raise Rager::Errors::CredentialsError.new("Replicate", env_var: ["REPLICATE_API_KEY"]) if api_key.nil?

  url = "https://api.replicate.com/v1/models/#{options.model}/predictions"

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

  body = {
    input: {
      prompt: prompt
    }
  }.tap do |b|
    b[:input][:output_format] = T.must(options.output_format).serialize if options.output_format
    b[:input][:seed] = options.seed if options.seed
  end

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

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

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

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