# myprogram.py

# This is the MAIN or startup program class

# imports
from mydata import products
from mymodules import myfooter, myheader

# functions
def fullname(fname, lname, age=None): # helper functions page 42
    # positional args page 38
    firstname = fname # var scope page 43
    lastname = lname # var scope page 43
    #ageInTenYears = int(age) + 10
    #print(ageInTenYears)
    fullname = firstname + " " + lastname # + " Age: " + age
    print(fullname)


def userInputs():
    # keyword args page 38
    firstName = input("Enter contact first name: ")
    lastName = input("Enter contact last name: ")
    age = input("Enter contact age: ")  # string
    return firstName, lastName, age # returning the 3 props in memory to the program


def myproducts(products):
    # iterative function page 39
    # collection object (list,set,tuple,dict) is passed to the function
    for product in products:
        print("Product Name: " + product)

# recursive function page 40 > a function that calls itself, instead of returning to the program class
def sell_product(inventory): # inventory data type int
    if inventory > 0: # Base inventory
        print("Quantity available to sell: " + str(inventory))
        # Ask the user if they want to enter another order
        # if exit() keywords
        anotherOrder = input("Do you want to enter another order? (yes/no): ")
        if anotherOrder == "no":
            exit()
        # Ask the order id and qty sold from the user
        orderID = input("What is the order id: ") # string
        # Qty
        qtySold = int( input(f"Enter quantity for {orderID}: ") ) # int qtySold
        print("Order ID: " + orderID)
        # currentInventory formula inventory - qtySold
        # use currentInventory below in place of the formula
        print(f"Quantity sold: {qtySold} , remaining inventory: {inventory - qtySold}")
        # inventory -= 1 return a new value to the class
        sell_product(inventory - qtySold)
    else:
        print("Out of inventory")


#### Program Class ####

def main():

    myheader()

    # Container for myprogram

    print("My Program Stuff")

    firstName, lastName, age = userInputs() # call

    fullname(firstName, lastName, age)

    print("=== Product List ===")
    print("====================")
    myproducts(products)
    print("=== End of Product List ===")

    print("==== Inventory Counter ====")
    initial_inventory = 8
    sell_product(initial_inventory)
    print("==== End of Inventory Counter ====")

    # Footer
    myfooter()

# page 35 main statement
if __name__ == "__main__":
    main()