#!/usr/bin/python
# -*- coding: utf-8 -*-
#
# A pygame-based Python GO client

import sys
sys.path.append('lib/')

import os
import pygame
from pygame.locals import *
from goban import *


def load_png(name, alpha=None):
    """ Load image and return image object"""
    fullname = os.path.join('res', name)

    try:
        image = pygame.image.load(fullname)
        if image.get_alpha() is None:
            image = image.convert()
        else:
            image = image.convert_alpha()

        if alpha is not None:
            image.set_alpha(alpha)

    except pygame.error, message:
        print 'Cannot load image:', fullname
        raise SystemExit, message

    return image


def build_img_res():
    ret = {}

    triangle = load_png('go_t.png')
    
    ret['w'] = load_png('go_w.png')
    ret['wT'] = load_png('go_w.png')
    ret['wT'].blit(triangle, (0,0))
    ret['wH'] = load_png('go_w.png', 128)

    ret['b'] = load_png('go_b.png')
    ret['bT'] = load_png('go_b.png')
    ret['bT'].blit(triangle, (0,0))
    ret['bH'] = load_png('go_b.png', 128)

    circle = load_png('go_c.png')

    for d in ('u', 'd', 'l', 'r', 'm', 'dl', 'dr', 'ul', 'ur', 'h'):
        ret[d] = load_png('go_' + d + '.png')
        ret[d + 'C'] = load_png('go_' + d + '.png')
        ret[d + 'C'].blit(circle, (0,0))

    return ret


def main():
    # Basic screen init
    pygame.init()
    screen = pygame.display.set_mode((1000, 800))
    pygame.display.set_caption('pyGo')
    
    # Create the background object, make it blank
    background = pygame.Surface(screen.get_size())
    background = background.convert()
    background.fill((250, 250, 250))

    # Build the dict of image objects
    img_res = build_img_res()
            
    board_size = 800
    board_inc = board_size / 19

    goban = Goban()

    board = goban.draw_board(board_size, img_res)
    background.blit(board, (0,0))

    text = goban.draw_info()
    background.blit(text, (815, 25))
    
    screen.blit(background, (0, 0))
    pygame.display.flip()

    while True:
        event = pygame.event.wait()
        
        if event.type == QUIT:
            return

        # Hover a transparent stone over our
        # cursor position, assuming play is legal
        if event.type == MOUSEMOTION:
            x, y = event.pos
            row = y / board_inc
            col = x / board_inc

            if x <= board_size:
                goban.set_hover((col,row))
            else:
                goban.clear_hover()

        # Place a stone on left-click
        if event.type == MOUSEBUTTONDOWN:
            x, y = event.pos
            row = y / board_inc
            col = x / board_inc

            if x <= board_size:
                if event.button == 1:
                    goban.play_move((col, row))

                
        board = goban.draw_board(board_size, img_res)
        background.blit(board, (0,0))
    
        text = goban.draw_info()
        background.blit(text, (815, 25))

        screen.blit(background, (0, 0))
        pygame.display.flip()

    

if __name__ == '__main__': main()