import tkinter as tk
import re


global bx
global cp
bx = []
cp = 1

global inputmove
global inputboard
global board
global history
global player
global error

def render(b):
	rx = ["X"*a for a in b]
	r = '\n'.join(rx)
	return r
def playeris(n):
	return "player "+str(n)+"'s move"
def playerwins(n):
	return "player "+str(n)+" wins!"
	
def play():
	global bx
	global cp
	global history
	rm = inputmove.get()
	if not re.match("[0-9]+[-][0-9]+",rm):
		error.set("invalid move")
		return
	if not re.match("[0-9]+[-][0-9]+",rm).group(0)==rm:
		error.set("invalid move")
		return
	rf = rm.split("-")
	rf = [int(a) for a in rf]
	if rf[0] not in bx:
		error.set("invalid move")
		return
	if rf[1]>=rf[0]:
		error.set("invalid move")
		return
	error.set("")
	hn = history.get()
	hn = hn + "\n" + rm
	history.set(hn)
	i = bx.index(rf[0])
	bx[i] = rf[1]
	board.set(render(bx))
	if False not in [a==0 for a in bx]:
		player.set(playerwins(cp))
		return
	cp = 3-cp
	player.set(playeris(cp))
def clear():
	global bx
	global cp
	bx = []
	cp = 1
	history.set("")
	board.set("")
	player.set("")
	error.set("")
def set():
	global bx
	global cp
	error.set("")
	rb = inputboard.get()
	if not re.match("([0-9]+[,])*([0-9])+",rb):
		error.set("invalid board")
		return
	if not re.match("([0-9]+[,])*([0-9])+",rb).group(0)==rb:
		error.set("invalid board")
		return
	history.set("start board: "+rb)
	rb = rb.split(",")
	rb = [int(a) for a in rb]
	bx = rb
	cp = 1
	board.set(render(bx))
	player.set(playeris(cp))

game = tk.Tk()
board = tk.StringVar()
history = tk.StringVar()
player = tk.StringVar()
error = tk.StringVar()

history.set("")
board.set("")
player.set("")
error.set("")

#frame on the right, for info to play the game
playframe = tk.Frame(game)
playframe.pack(side=tk.RIGHT)
#subframes
boardframe = tk.Frame(playframe)
boardframe.pack()
inputframe1 = tk.Frame(playframe)
inputframe1.pack()
inputframe2 = tk.Frame(playframe)
inputframe2.pack()
#contents
boarddisplay = tk.Label(boardframe,textvariable=board,height=8)
boarddisplay.pack()
playbutton = tk.Button(inputframe1,text="play",height=2,command=play)
playbutton.pack(fill='x',side=tk.BOTTOM)
inputinstructions = tk.Label(inputframe1,text="Enter your move in the format X-Y\nwhere X is the size of the pile you want to change,\nand Y is the size you want to change that pile into.\nFor example: 3-0")
inputinstructions.pack(fill='x',side=tk.TOP)
inputmove = tk.Entry(inputframe1)
inputmove.pack(fill='x')
boardbutton = tk.Button(inputframe2,text="start new game",height=2,command=set)
boardbutton.pack(fill='x',side=tk.BOTTOM)
boardinstructions = tk.Label(inputframe2,text="Enter the starting board as numbers with commas.\nThe numbers will be the sizes of the piles.\nFor example: 5,4,3")
boardinstructions.pack(fill='x',side=tk.TOP)
inputboard = tk.Entry(inputframe2)
inputboard.pack(fill='x')

#frame on the left, to keep track of useful game details
recordframe = tk.Frame(game)
recordframe.pack(side=tk.LEFT)
#subframes
playerframe = tk.Frame(recordframe)
playerframe.pack()
historyframe = tk.Frame(recordframe)
historyframe.pack()
optionsframe = tk.Frame(recordframe)
optionsframe.pack()
errorframe = tk.Frame(recordframe)
errorframe.pack()
#contents
playerdisplay = tk.Label(playerframe,textvariable=player)
playerdisplay.pack()
historydisplay = tk.Label(historyframe,textvariable=history)
historydisplay.pack()
quitbutton = tk.Button(optionsframe,text="quit",width=7,height=2,command=quit)
quitbutton.pack(side=tk.LEFT)
clearbutton = tk.Button(optionsframe,text="clear",width=7,height=2,command=clear)
clearbutton.pack(side=tk.RIGHT)
errordisplay = tk.Label(errorframe,textvariable=error)
errordisplay.pack()




game.mainloop()