class Gitlab::Request

def self.decode(response)
  response ? JSON.load(response) : {}
rescue JSON::ParserError
  raise Error::Parsing, 'The response is not a valid JSON'
end

def self.parse(body)
  body = decode(body)
  if body.is_a? Hash
    ObjectifiedHash.new body
  elsif body.is_a? Array
    PaginatedResponse.new(body.collect! { |e| ObjectifiedHash.new(e) })
  elsif body
    true
  elsif !body
    false
  elsif body.nil?
    false
  else
    raise Error::Parsing, "Couldn't parse a response body"
  end
end

def authorization_header(options)
  return if options[:unauthenticated]
  raise Error::MissingCredentials, 'Please provide a private_token or auth_token for user' unless @private_token
  options[:headers] = if @private_token.size < 21
                        { 'PRIVATE-TOKEN' => @private_token }
                      else
                        { 'Authorization' => "Bearer #{@private_token}" }
                      end
end

def httparty_config(options)
  options.merge!(httparty) if httparty
end

def request_defaults(sudo = nil)
  self.class.default_params sudo: sudo
  raise Error::MissingCredentials, 'Please set an endpoint to API' unless @endpoint
  self.class.default_params.delete(:sudo) if sudo.nil?
end

def validate(response)
  error_klass = case response.code
                when 400 then Error::BadRequest
                when 401 then Error::Unauthorized
                when 403 then Error::Forbidden
                when 404 then Error::NotFound
                when 405 then Error::MethodNotAllowed
                when 409 then Error::Conflict
                when 422 then Error::Unprocessable
                when 500 then Error::InternalServerError
                when 502 then Error::BadGateway
                when 503 then Error::ServiceUnavailable
                end
  raise error_klass, response if error_klass
  parsed = response.parsed_response
  parsed.client = self if parsed.respond_to?(:client=)
  parsed.parse_headers!(response.headers) if parsed.respond_to?(:parse_headers!)
  parsed
end