#
# game of war
#
# Matt Bishop, MHI 289I Fall 2021
#
import cards
import sys

#
# print a hand
#
def prhand(s, d):
    # print the introduction no matter what
    print(s, end=' ')
    # if there's nothing in the hand, end the line
    # otherwise, print the hand
    if len(d) == 0:
        print("")
    else:
        ld = len(d)
        for i in range(ld-1):
            if d[i].len() == 2:
                print(d[i], end='  ')
            else:
                print(d[i], end=' ')
        print(d[ld-1])

#
# does the user want to end it all?
# we end on EOF and ignore anything else
# returns True to exit, False to continue
#
def enditall():
    # give user a chance to enter something
    try:
        # any char they type is irrelevant
        input("(EOF to exit) >>")
    except EOFError:
        # EOF -- exit
        return True
    except Exception as e:
        # oops -- whatever happened, we're done
        print(e)
        return True

    # keep going!
    return False

#
# this plays the game
# we use 5 lists:
#   myhand: list of cards in my hand this round
#   yourhand: list of cards in your hand this round
#   tmyhand: list of cards I won this round
#   tyourhand: list of cards you won this round
#   hold: list of cards that are equal during play
# at the end of each round, cards from txhand become
# cards in xhand; hold is not cleared until next win
# 
def main():
    #
    # create and shuffle the deck
    #
    d = cards.Deck()
    d.shuffle()

    #
    # now deal and announce the hands
    # we emulate a real deal, one card
    # to each person, alternating
    #
    myhand = [ ]
    yourhand = [ ]
    count = 0;
    while(count < 52):
        if count % 2 == 0:
            myhand.append(d.cards[count])
        else:
            yourhand.append(d.cards[count])
        count += 1
    prhand("   My hand:", myhand)
    prhand(" Your hand:", yourhand)
#    print('----------------------------')

    #
    # initialize the temp arrays
    # hold: cards go here when they are equal
    # tmyhand: cards go here when I win them
    # tyourhand: cards go here when you win them
    #
    hold = [ ]
    tmyhand = [ ]
    tyourhand = [ ]

    #
    # game continues until someone has no cards left
    #
    while len(myhand) != 0 and len(yourhand) != 0:
        #
        # play a round
        #
        while len(myhand) > 0 and len(yourhand) > 0:
            # each lay one card; see who wins (or if
            # it's a push, ie., cards are equal)
            if myhand[0].rcmp(yourhand[0]) > 0:
                # I win; move cards to tmyhand
                # and delete from both hands
                # note we also add any held cards
                tmyhand.append(myhand.pop(0));
                tmyhand.append(yourhand.pop(0));
                tmyhand.extend(hold)
                hold.clear()
            elif myhand[0].rcmp(yourhand[0]) < 0:
                # I win; move cards to tmyhand
                # and delete from both hands
                # note we also add any held cards
                tyourhand.append(myhand.pop(0));
                tyourhand.append(yourhand.pop(0));
                tyourhand.extend(hold)
                hold.clear()
            else:
                # neither; put both cards on hold
                hold.append(myhand.pop(0));
                hold.append(yourhand.pop(0));

            #
            # now print the state of the hands
            #
            print('=================================')
            prhand("  My hand:", myhand)
            prhand("Your hand:", yourhand)
            prhand("*   I won so far:", tmyhand)
            prhand("* You won so far:", tyourhand)
            # we only print hold if there are cards there
            if hold:
                print('----------------------------')
                prhand("Equals:", hold)
                
            # see if the user wants to end the game
            if enditall():
                print("  I have %2d cards" % (len(myhand) + len(tmyhand)))
                print("You have %2d cards" % (len(yourhand) + len(tyourhand)))
                return

        #
        # end of the round
        # move what was won into the hand
        #
        myhand.extend(tmyhand)
        tmyhand.clear()
        yourhand.extend(tyourhand)
        tyourhand.clear()

    #
    # end of the game; say who won
    #
    if len(myhand) > 0:
        print("I win!")
    else:
        print("You win!")

#
# you're off!
#
main()