from cyclic_utils import rem_routes

class Route(object):
    """docstring for Route."""
    def __init__(self, route_id, contract_id, load,src,dst):
        super(Route, self).__init__()
        self.route_id = route_id
        self.contract_id = contract_id
        self.load = load
        self.src = src
        self.dst = dst

    def __eq__(self,rt):
        eq = self.route_id == rt.route_id and self.contract_id == rt.contract_id
        return eq

    def __repr__(self):
        return str(self.contract_id)+"-"+str(self.route_id)+":"+self.src+" - "+self.dst+" "+self.load


class Contract(object):
    """docstring for Contract."""
    def __init__(self, contract_id, routes):
        super(Contract, self).__init__()
        self.contract_id = contract_id
        self.routes = routes

    def __repr__(self):
        return "\tContract : "+str(self.contract_id)+"\n\tRoutes\n\t\t"+"\n\t\t".join(map(repr,self.routes))

class Transporter(object):
    """docstring for Transporter."""
    def __init__(self, contracts):
        super(Transporter, self).__init__()
        self.contracts = contracts

    @classmethod
    def from_file(cls,c_file):
        return cls(cls.read_contracts(c_file))

    @staticmethod
    def read_contracts(c_file):
        c_lines = open(c_file,'r').readlines()
        c_dict = {}
        for l in c_lines:
            (c_id,src,dst,load) = l.split(' ')
            if c_dict.has_key(c_id):
                route_id = len(c_dict[c_id])
                c_dict[c_id].append(Route(route_id,int(c_id),load,src,dst))
            else:
                c_dict[c_id] = [Route(0,int(c_id),load,src,dst)]
        contracts = [Contract(int(i),c_dict[i]) for i in sorted(c_dict.keys())]

        return contracts

    def contract_routes(self):
        all_routes = []
        for c in self.contracts:
            for r in c.routes:
                all_routes.append(r)
        return all_routes

    def contracts_required(self):
        routes = self.contract_routes()
        unfulfilled = rem_routes(routes)
        print "No of contracts required : ",len(unfulfilled)
        if len(unfulfilled) > 0:
            print "Contracts from ",repr(unfulfilled)

    def contract_corridors(self):
        return rem_routes(self.contract_routes())

if __name__ == '__main__':
    Transporter.from_file('./contracts.txt').contracts_required()