# -*- coding: utf-8 -*-

import urllib

from functools import partial

from decimal import Decimal

#import copy

from ..config import Option

from ..model.status import Status

from .provider import Provider, providers

from ..error import RejectRecipient, ExternalException

#import logging

#logger=logging.getLogger("smstrade")

statusCodes = {10 : "Empfaengernummer nicht korrekt.",

    20 : "Absenderkennung nicht korrekt.",

    30 : "Nachrichtentext nicht korrekt.",

    31 : "Messagetyp nicht korrekt.",

    40 : "SMS Route nicht korrekt.",

    50 : "Identifikation fehlgeschlagen.",

    60 : "nicht genuegend Guthaben.",

    70 : "Netz wird von Route nicht abgedeckt.",

    71 : "Feature nicht ueber diese Route moeglich.",

    80 : "Uebergabe an SMS-C fehlgeschlagen.",

    90 : "Versand nicht moeglich.",

    100 : "SMS wurde versendet.",

    }

"""statuscodes of external smstrade API"""

class SmstradeException(ExternalException):

    """An excetion that connects the status code with the excetion string (see :attr:`statusCodes`)"""

    def __init__(self,status):

        ExternalException.__init__(self)

        self.status = status

        self.str_=str(status)

    def __str__(self):

        return "%s\n%s"%(ExternalException.__str__(self),self.str_)

class StatusCode:

    """Class that represents the output of one smstrade request."""

    def __init__(self,code, exID=None, costs=Decimal("0.0"), count=0):

        self.code = code

        self.exID = exID

        self.costs = Decimal(costs)

        self.count = int(count)

    def __str__(self):

        if self.code in statusCodes.keys():

            return "%i: %s"%(self.code, statusCodes[self.code])

        return "%i: unknown statuscode."%self.code

    def __int__(self):

        return self.code

class Smstrade(Provider):

    """A Provider to send SMS to recipients using smstrade.

    Smstrade only supports to send SMS  and four diffrent routes: ``["basic","economy","gold","direct"]``.

    It needs a smstrade Gateway Key https://login.smstrade.de/index.php?gateway in configuration file.

    smstrade API documentation:  http://kundencenter.smstrade.de/sites/smstrade.de.kundencenter/__pdf/SMS-Gateway_HTTP_API_v2.pdf

    The smstrade API supports a debug mode, that can be set  with :attr:`~iro.offer.provider.Provider.testmode`.

    """

    _params= {"debug":("boolean",False),

            "concat_sms":('boolean',False),

            "message_id":('boolean',False),

            "count":('boolean',False),

            "cost":('boolean',False),

           }

    '''dict for standrd values of the smstrade api, it is used to get the right values to the API.'''

    def __init__(self, name):       

        self.url = "https://gateway.smstrade.de"

        options =[("key", Option(lambda x,y:x,long="smstrade Gateway Key https://login.smstrade.de/index.php?gateway", must=True)),]

        Provider.__init__(self, name, {"sms":["basic","economy","gold","direct"]},options)

    def send(self, route, recipient, sms):

        """send one SMS to recipient via route

        :param string route: A valid route ``["basic", "economy", "gold", "direct"]``

        :param `iro.telnumber.Telnumber` recipient: Mobilenumber of recipient

        :param `iro.model.message.SMS` sms: the sms to send

        :return:

            - All went ok -- :class:`iro.model.status.Status` object

            - otherwise -- an exception

        """

        #logger.debug('smstrade.sendSMS(%s,%s)'%(sms,  recipient))

        route = unicode(route)

        if recipient.land != '49' and route == "basic":

            raise RejectRecipient(recipient)

        to ='00'+recipient.land+recipient.number

        s = self.__send(route, to, sms)	

        if int(s) in (100,):

            return Status(self,route, exID=s.exID, costs=s.costs, count=s.count)

        elif int(s) in (70,71,):

            raise RejectRecipient(recipient, status=s)

        else:

            raise SmstradeException(s)

    def __send(self, route, to, sms):

        """ This is the main function to request to the sms service.    

        :param string route: A valid route ``["basic", "economy", "gold", "direct"]

        :param string recipient: Mobilenumber of recipient

        :param `iro.model.message.sms` sms: the sms to send

        :return: a :class:`.StatusCode` object

        """

        #logger.debug('smstrade._send(%s,%s,%s)'%( route, to, sms))

        parameters= {"key": self.key,

                "route": route,

                "to": to,

                "message": sms.content,

                "charset":"utf-8", 

                "debug": self.testmode,

                "message_id":True,

                "count":True,

                "cost":True,

                }

        doubleChar="€[]{}|\\^~"    #these charactar need two GSM Chars

        if sms.from_ is not None:

            parameters["from"] = sms.from_

        length=len(sms.content)

        for s in doubleChar:

            length += sms.content.count(s)

        parameters["concat_sms"] = True if length > 160 else False

        ps={}

        for p in parameters:

            if p in self._params.keys():

                if self._params[p][0] == "boolean":

                    if parameters[p] != self._params[p][1]:

                        ps[p]=int(bool(parameters[p]))

            else:

                ps[p] = parameters[p]

        params = urllib.urlencode(ps)

        #dp=copy.deepcopy(ps)

        #dp["key"]="<KEY>"

        #print 'smstrade._send-parameters:%s\n\t->%s'%(str(dp), urllib.urlencode(dp))

        response = urllib.urlopen(self.url, params)

        data = response.readlines()

        if len(data) == 1:

            return StatusCode(int(data[0]))

        return StatusCode(int(data[0]),exID=data[1],costs=data[2],count=data[3])

    def getSendFunc(self, typ, route):

        """returns  a partial :meth:`send` methed with bounded route, if typ and route is valid."""

        Provider.getSendFunc(self, typ, route)

        return partial(self.send,route)

providers["smstrade"]=Smstrade