class Doorkeeper::Server

def authorization_request(strategy)
  klass = Request.authorization_strategy strategy
  klass.build self
end

def client
  @client ||= OAuth::Client.authenticate(credentials)
end

def client_via_uid
  @client_via_uid ||= OAuth::Client.find(parameters[:client_id])
end

def credentials
  methods = Doorkeeper.configuration.client_credentials_methods
  @credentials ||= OAuth::Client::Credentials.from_request(context.request, *methods)
end

def current_refresh_token
  AccessToken.by_refresh_token(parameters[:refresh_token])
end

def current_resource_owner
  context.send :current_resource_owner
end

def grant
  AccessGrant.authenticate(parameters[:code])
end

def initialize(context = nil)
  @context = context
end

def parameters
  context.request.parameters
end

def resource_owner
  context.send :resource_owner_from_credentials
end

def token_request(strategy)
  klass = Request.token_strategy strategy
  klass.build self
end