import random

# || Generator class

class Generator:
    def __init__(self, title, id, generalProb, generalSol, func):
        self.title = title
        self.id = id
        self.generalProb = generalProb
        self.generalSol = generalSol
        self.func = func

    def __str__(self):
        return str(self.id) + " " + self.title + " " + self.generalProb + " " + self.generalSol

    def __call__(self):
        return self.func()


# || Functions

def addition(maxSum = 99, maxAddend = 50):
    a = random.randint(0, maxAddend)
    b = random.randint(0, min((maxSum-a), maxAddend)) #The highest value of b will be no higher than the maxsum minus the first number and no higher than the maxAddend as well
    c = a+b
    problem = str(a) + "+" + str(b) + "="
    solution = str(c)
    return problem, solution

def subtraction(maxMinuend = 99, maxDiff = 99):
    a = random.randint(0, maxMinuend)
    b = random.randint(max(0, (a-maxDiff)), a)
    c = a-b
    problem = str(a) + "-" + str(b) + "="
    solution = str(c)
    return problem, solution

# || Class Instances

#Format is:
#g<id> = Generator("<Title>", <id>, <generalized problem>, <generalized solution>, <function name>)
g2 = Generator("Addition", 2, "a+b=", "c", addition)
g3 = Generator("Subtraction", 3, "a-b=", "c", subtraction)

# || Testing Zone
print(g2)
print(g2())
print(g3())