import random
natoref = {}
alphabet = []
starting = 1
difficulty = 1

def userinit():
    global starting
    global difficulty
    while(1):
        inp = input("please select the starting number of items\n(input a positive integer)\n")
        try:
            if(inp == "debug"):
                starting = 0
                break
            if(int(inp) > 0):
                starting = int(inp)
                break
            else:
                print("please try again\n")
                continue
        except:
            print("please try again\n")
            continue
    while(1):
        inp = input("please select a difficulty \n(input a positive integer)\n")
        if(int(inp) > 0):
            difficulty = int(inp)
            break
        else:
            print("please try again\n")
            continue
    reset()
def loadlist():
    global natoref
    with open('natolist.txt', 'r') as natolist:
        lines = natolist.readlines()
    for line in lines:
        line = line.lower()
        for word in line.split():
            natoref[word[0]]=word
def reset():
    global starting
    for _ in range(starting):
        for i in range(0,26):
            global alphabet
            x = chr(97+i)
            alphabet.append(x)
def wrong(letter):
    global natoref
    for _ in range(difficulty):
        alphabet.append(letter)
def run():
    while(1):
        try:
            global alphabet
            global natoref
            if(not alphabet):
                print("that's all of them! \n")
                userinp = input("please either reset, continue, or exit"+ " \n")
                userinp = userinp.lower()
                if (userinp == "exit" or userinp == "quit"):
                    exit()
                elif(userinp == "continue"):
                    if(starting>0):
                        reset()
                    else:
                        print("quit screwing around with debug mode for no reason\n")
                        exit()
                elif (userinp == "reset" or userinp == "restart"):
                    userinit()
                else:
                    print("yeah that didn't make any sense so...")
                    exit()
            letter = random.choice(alphabet)
            userinp = input("\n"+ letter+ " \n")
            userinp = userinp.lower()
            if (userinp == "exit" or userinp == "quit"):
                exit()
            elif (userinp == natoref[letter]):
                alphabet.remove(letter)
                print("correct! "+str(alphabet.count(letter))+" remaining\n")
            elif (userinp == "reset" or userinp == "restart"):
                userinit()
            else:
                wrong(letter)
                print("incorrect! The correct answer is "+ natoref[letter]+ "\n")
                print(str(alphabet.count(letter))+" remaining\n")
        except KeyboardInterrupt:
            exit()
loadlist()
userinit()
run()