openSUSE/open-build-service

class APIError < RuntimeError
  def self.abstract_class?
    true
  end

  class << self
    @errorcode = nil
    @status = 400
    @default_message = nil

    def setup(setvalue, status = nil, message = nil)
      if setvalue.is_a?(String)
        @errorcode = setvalue
        @status = status || 400
        @default_message = message
      else # support having the status first
        @status = setvalue
        @default_message = status
      end
    end
  end

  def errorcode
    err = self.class.instance_variable_get(:@errorcode)
    return err if err

    err = self.class.name.demodulize.underscore
    # if the class name stops with Error, strip that
    err.gsub(/_error$/, '')
  end

  def status
    self.class.instance_variable_get(:@status)
  end

  def default_message
    self.class.instance_variable_get(:@default_message)
  end
end

# 403 errors (how about a subclass?)
class NoPermission < APIError
  setup 403
end

class CreateProjectNoPermission < APIError
  setup 403
end

class DeleteFileNoPermission < APIError
  setup 403
end

class PostRequestNoPermission < APIError
  setup 403
end

class OpenReleaseRequest < APIError
  setup 403
end

class PostRequestMissingParameter < APIError
  setup 403
end

# 404 errors
class NotFoundError < APIError
  setup 404
end

class UnknownPackage < APIError
  setup 404
end

class UnknownRepository < APIError
  setup 404
end

class RepositoryMissing < APIError
  setup 404
end

# 400 errors
class MissingParameterError < APIError; end

class RemoteProjectError < APIError; end

class InvalidParameterError < APIError; end

class InvalidProjectNameError < APIError; end

class InvalidLimitError < APIError; end

class UnknownCommandError < APIError; end

class NotMissingError < APIError; end

class PackageAlreadyExists < APIError; end

class ArchitectureOrderMissmatch < APIError
  setup 'architecture_order_missmatch'
end

class ExpandError < APIError
  setup 'expand_error'
end

class ProjectNotLocked < APIError
  setup 'not_locked'
end

class AbstractMethodCalled < APIError
  setup 'not_implemented', 501, 'Called unimplemented abstract method'
end