#
# Example of multiple inheritance --
# basic animal classes, house pet, cats with error checking
#
# Matt Bishop, ECS 36A, Winter 2019
#

#
# base class: animal
#
class Animal:

    # expected to be one of these
    kindofanimal = [ "lion", "bear", "dog", "giraffe", "cat" ]

    def __init__(self, kind):
        # if it's in the list, OK -- otherwise disallow it
        if kind in Animal.kindofanimal:
            self.kind = kind
        else:
            self.kind = None

    def __str__(self):
        # if it's not in the list, say so
        if self.kind:
            return "Your animal is a " + self.kind
        else:
            return "Your animal is of an unknown type"

#
# another base class: pets
#
class Pets:

    # expected to be one of these
    kindofpet = [ "indoor", "outdoor", "in and out" ]

    def __init__(self, kind):
        # if it's in the list, OK -- otherwise disallow it
        if kind in Pets.kindofpet:
            self.housetype = kind
        else:
            self.housetype = None

    def __str__(self):
        # if it's not in the list, say so
        if self.housetype:
            return "Your pet is " + self.housetype
        else:
            return "Your pet is of an unknown type"
    
#
# now the subclass, as cat is an animal
#
class Cat(Animal, Pets):

    # breeds of cats
    catbreed = [ "Persian", "Manx", "Siamese", "domestic" ]

    def __init__(self, house, breed):
        # instatiate as an animal
        Animal.__init__(self, "cat")
        # indoor or outoor pet?
        Pets.__init__(self, house)
        # add in the new attribute
        if breed in Cat.catbreed:
            self.breed = breed
        else:
            self.breed = None

    def __str__(self):
        # if it's not in the list, say so
        if self.breed:
            return Animal.__str__(self) + "; " + Pets.__str__(self) + "; breed is "+self.breed
        else:
            return Animal.__str__(self) + "; " + Pets.__str__(self) + "; breed is unknown"

#
# nw the example usage
#
# first, the class -- show a lion
a = Animal("lion")
print(a)

# now, the subclass, with a valid breed
c = Cat("in and out", "Persian")
print(c)

# and the subclass with an invalid breed
c2 = Cat("outdoor", "Himalayan")
print(c2)