class PriceDisagreementError(Exception):
    pass


class DuplicateStreamHashError(Exception):
    pass


class DownloadCanceledError(Exception):
    pass

class DownloadTimeoutError(Exception):
    def __init__(self, download):
        Exception.__init__(self, 'Failed to download {} within timeout'.format(download))
        self.download = download

class RequestCanceledError(Exception):
    pass


class InsufficientFundsError(Exception):
    pass


class ConnectionClosedBeforeResponseError(Exception):
    pass


class KeyFeeAboveMaxAllowed(Exception):
    pass


class InvalidExchangeRateResponse(Exception):
    def __init__(self, source, reason):
        Exception.__init__(self, 'Failed to get exchange rate from {}:{}'.format(source, reason))
        self.source = source
        self.reason = reason


class UnknownNameError(Exception):
    def __init__(self, name):
        Exception.__init__(self, 'Name {} is unknown'.format(name))
        self.name = name


class UnknownClaimID(Exception):
    def __init__(self, claim_id):
        Exception.__init__(self, 'Claim {} is unknown'.format(claim_id))
        self.claim_id = claim_id


class UnknownURI(Exception):
    def __init__(self, uri):
        Exception.__init__(self, 'URI {} cannot be resolved'.format(uri))
        self.name = uri


class InvalidName(Exception):
    def __init__(self, name, invalid_characters):
        self.name = name
        self.invalid_characters = invalid_characters
        Exception.__init__(
            self, 'URI contains invalid characters: {}'.format(','.join(invalid_characters)))


class UnknownStreamTypeError(Exception):
    def __init__(self, stream_type):
        self.stream_type = stream_type

    def __str__(self):
        return repr(self.stream_type)


class InvalidStreamDescriptorError(Exception):
    pass


class InvalidStreamInfoError(Exception):
    def __init__(self, name, stream_info):
        msg = '{} has claim with invalid stream info: {}'.format(name, stream_info)
        Exception.__init__(self, msg)
        self.name = name
        self.stream_info = stream_info


class MisbehavingPeerError(Exception):
    pass


class InvalidDataError(MisbehavingPeerError):
    pass


class NoResponseError(MisbehavingPeerError):
    pass


class InvalidResponseError(MisbehavingPeerError):
    pass


class NoSuchBlobError(Exception):
    pass


class NoSuchStreamHash(Exception):
    pass


class NoSuchSDHash(Exception):
    """
    Raised if sd hash is not known
    """


class InvalidBlobHashError(Exception):
    pass


class InvalidHeaderError(Exception):
    pass


class InvalidAuthenticationToken(Exception):
    pass


class NegotiationError(Exception):
    pass