#!/usr/bin/env python

from board2 import Board
from board2 import BoardTools
from pos import TwoDPos
from pos import TwoDUtils
from node import Node

class StateError(BaseException):
    pass

piecemaps = {
        0: '.',
        1: 'x',
        2: 'o',
}
mappings = TwoDUtils.reverse

def tree_of_node(node):
    parent = node
    print("considering board with moveset " + str(parent.inner.moves))

    possible = parent.inner.possible()
    if len(possible) != 0:
        print("permuting!")
        for i in possible:
            copy = parent.inner.copy()
            copy.append(i)
            childnode = Node()
            childnode.inner = copy
            parent.children.append(childnode)
        for i in parent.children:
            tree_of_node(i)
    else:
        print("calculated score")
        rawscore = BoardTools.winning(None, parent.inner.metaboard())
        if rawscore == Board.cross:
            score = -1
        elif rawscore == Board.nought:
            score = 1
        elif rawscore == Board.tie:
            score = 0
        else:
            score = None
            raise StateError("aaaa")

        print("score" + str(score))

def render(board):
    print("123   456   789")
    moves = board.possible()
    moves = [i.glob() for i in moves]
    for i in range(9):
        buf = []
        for j in range(9):
            ri = mappings[i]
            string = ''.join([ri, str(j + 1)])
            pos = TwoDPos(TwoDPos.g, string)
            item = board.get(*pos.local())
            if string in moves:
                buf.append('?')
            else:
                buf.append(piecemaps[item])
            if j in [2, 5]:
                buf.append(" | ")
            if j == 8:
                buf.append(" " + ri)
        print(''.join(buf))
        if i in [2, 5]:
            print("----+-----+----")

    print("to play: " + str(board.turn))

def help_text():
    print("m - make a move")
    print("p - see coordinates of legal moves")
    print("t - see whose turn it is")
    print("r - render the board to the screen")
    print("q - quit program")
    print("h - show help (this list)")

def move(board, move):
    move = TwoDPos(TwoDPos.g, move)
    print(move)
    board.append(move)

def possibilities(board):
    print(board.possible())

def turn(board):
    print("to play: " + str(board.turn))

def main():
    b = Board()
    print("type h for help")
    while True:
#        try:
            cmd = input("> ")
            spl = cmd.split(' ')
            if spl[0] == "m":
                move(b, spl[1])
            elif spl[0] == "p":
                possibilities(b)
            elif spl[0] == "t":
                turn(b)
            elif spl[0] == "r":
                render(b)
            elif spl[0] == "h":
                help_text()
            elif spl[0] == "z":
                # create node from current board
                node = Node()
                node.inner = b

                tree_of_node(node)

            elif spl[0] == "q":
                break;
#        except:
#            print("error occured")
    return

if __name__ == "__main__":
    main()