class PublisherError(Exception):
    """Generic publisher error"""


class InvalidAttribute(PublisherError):
    """Publisher defined with invalid or missing attribute"""


class InvalidBot(PublisherError):
    """Publisher refers to the wrong service bot"""


class InvalidCredentials(PublisherError):
    """Publisher cannot validate credentials"""


class InvalidEvent(PublisherError):
    """Publisher cannot validate events"""


class InvalidMessage(PublisherError):
    """Publisher cannot validate message"""


class InvalidResponse(PublisherError):
    """Publisher receives an invalid response from its service"""


class InvalidSettings(PublisherError):
    """Publisher settings are either missing or badly configured"""


class ZulipError(PublisherError):
    """Publisher receives an error response from Zulip"""


class HTTPResponseError(PublisherError):
    """Publisher receives a HTTP error"""