"""
Copyright 2009-2010 Mozes, Inc.

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either expressed or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
"""
from smpp.pdu import constants

class SMPPError(Exception):
    """Base class for SMPP errors
    """

class SMPPClientError(SMPPError):
    """Raised for client-side errors
    """

class SMPPClientConnectionCorruptedError(SMPPClientError):
    """Raised when operations are attempted after the client has received corrupt data
    """

class SMPPClientSessionStateError(SMPPClientError):
    """Raised when illegal operations are attempted for the client's session state
    """

class SMPPTransactionError(SMPPError):
    """Raised for transaction errors
    """
    def __init__(self, response, request=None):
        self.response = response
        self.request = request
        SMPPError.__init__(self, self.getErrorStr())

    def getErrorStr(self):
        errCodeName = self.response.status.name
        errCodeVal = constants.command_status_name_map[errCodeName]
        errCodeDesc = constants.command_status_value_map[errCodeVal]
        return '%s (%s)' % (errCodeName, errCodeDesc)

class SMPPGenericNackTransactionError(SMPPTransactionError):
    """Raised for transaction errors that return generic_nack
    """

class SMPPRequestTimoutError(SMPPError):
    """Raised for timeout waiting waiting for response
    """

class SMPPSessionInitTimoutError(SMPPRequestTimoutError):
    """Raised for timeout waiting waiting for response
    """

class SMPPProtocolError(SMPPError):
    """Raised for SMPP protocol errors
    """
    def __init__(self, errStr, commandStatus):
        self.status = commandStatus
        SMPPError.__init__(self, "%s: %s" % (self.getStatusDescription(), errStr))

    def getStatusDescription(self):
        # _name_ gets the str name value of an enum
        # https://docs.python.org/3/library/enum.html#supported-sunder-names
        intVal = constants.command_status_name_map[self.status.name]
        return constants.command_status_value_map[intVal]['description']

class SessionStateError(SMPPProtocolError):
    """Raise when illegal operations are received for the given session state
    """

class PDUParseError(SMPPProtocolError):
    """Parent class for PDU parsing errors
    """

class PDUCorruptError(PDUParseError):
    """Raised when a complete PDU cannot be read from the network
    """