#!/usr/bin/env python
#coding=utf-8

import pygame, signal, sys, time, os, RPi.GPIO as GPIO
from pygame.locals import *

#GPIO
startPin = 32
errorPin = 31
enableErrorTimeAddingPin = 15
shutdownPin = 3

GPIO.setmode(GPIO.BOARD)
GPIO.setup(startPin, GPIO.IN)
GPIO.setup(errorPin, GPIO.IN)
GPIO.setup(enableErrorTimeAddingPin, GPIO.IN)
GPIO.setup(shutdownPin, GPIO.IN)

#other constants
timePerError = 5
screenSizeX = 900
screenSizeY = 900


pygame.init()


#colors
redColor = pygame.Color(255, 0, 0)
blackColor = pygame.Color(0, 0, 0)
whiteColor = pygame.Color(255, 255, 255)
grayColor = pygame.Color(128, 128, 128)
mainFontColor = redColor

#fonts
font = pygame.font.Font('freesansbold.ttf', 90)

def signal_handler(sig, frame):
        print('Programm exiting')
        exit_application()

def toggle_fullscreen():
        screen = pygame.display.get_surface()
        tmp = screen.convert()
        caption = pygame.display.get_caption()
        cursor = pygame.mouse.get_cursor() # Duoas 16-04-2007 

        w,h = screen.get_width(),screen.get_height()
        flags = screen.get_flags()
        bits = screen.get_bitsize()

        pygame.display.quit()
        pygame.display.init()

        screen = pygame.display.set_mode((w,h),flags^FULLSCREEN,bits)
        screen.blit(tmp,(0,0))
        pygame.display.set_caption(*caption)

        pygame.key.set_mods(0) #HACK: work-a-round for a SDL bug??

        pygame.mouse.set_cursor( *cursor ) # Duoas 16-04-2007
        return screen

def clearScreen():
        screen.fill(blackColor)
        return

def handle_events():
        print("Status der Pins:")
        print("Start Pin:", GPIO.input(startPin))
        print("Error Pin:", GPIO.input(errorPin))
        print("Stop Pin:", GPIO.input(shutdownPin))

        #if GPIO.input(shutdownPin) == True:
                #shutdown_raspberry()
        for event in pygame.event.get():
                if event.type == KEYDOWN and event.key == K_ESCAPE:
                        shutdown_raspberry()
                else:
                        if event.type == pygame.QUIT or event.type == KEYDOWN: 
                                exit_application()

        time.sleep(0.1)
        return

def exit_application():
        pygame.quit()
        GPIO.cleanup()
        sys.exit()
        return

def shutdown_raspberry():
        os.system("sudo shutdown -h now")
        return

#signal handing for controlled exit via ctrl+c
signal.signal(signal.SIGINT, signal_handler)

pygame.mouse.set_visible(False) # hide mouse

screen = pygame.display.set_mode((screenSizeX, screenSizeY), pygame.FULLSCREEN)
#pygame.display.set_caption('Heisser Draht') # not required for fullscreen application

#screen = toggle_fullscreen()



while True: # main loop
#global label storage
        time_surface = 0
        errors_surface = 0
        time_rectangle = 0
        errors_rectangle = 0

        header_surface = font.render('Dr' + u'ü' + 'cken Sie Start!', True, mainFontColor)
        header_rectangle = header_surface.get_rect()
        header_rectangle.topleft = (0, 100)

        screen.blit(header_surface, header_rectangle)
        pygame.display.flip()

        while GPIO.input(startPin) == False: #wait for the user to press start button
                handle_events()


        errors = 0
        errorAdded = False

        #justStarted = True

        header_surface = font.render('Spiel startet', True, mainFontColor)
        time.sleep(5)

        start_time = int(time.time())

        while True: # game running
                handle_events()

                if GPIO.input(errorPin) == True:
                        if errorAdded == False:
                                errors += 1
                                errorAdded = True
                        else:
                                errorAdded = False
                        if GPIO.input(enableErrorTimeAddingPin) == True:
                                int_time = int(time.time()) - start_time + errors * timePerError

                int_time = int(time.time()) - start_time

                time_surface = font.render('Zeit: ' + str(int_time) + 's', True, mainFontColor)
                time_rectangle = time_surface.get_rect()
                time_rectangle.topleft = (0, 300)

                errors_surface = font.render('Fehler: ' + str(errors), True, mainFontColor)
                errors_rectangle = errors_surface.get_rect()
                errors_rectangle.topleft = (0, 400)

                clearScreen()
                screen.blit(errors_surface, errors_rectangle) #errors
                screen.blit(time_surface, time_rectangle) #time 
                screen.blit(header_surface, header_rectangle) #header

                pygame.display.flip()

                #if GPIO.input(startPin) == False:
                #        justStarted = False
                #if GPIO.input(startPin) == True and justStarted == False:
                if GPIO.input(startPin) == True:
                        #break
                        continue #skip the rest

                clearScreen()
                header_surface = font.render('Game over!', True, mainFontColor)

                screen.blit(errors_surface, errors_rectangle) #errors
                screen.blit(time_surface, time_rectangle) #time 
                screen.blit(header_surface, header_rectangle) #header

                pygame.display.flip()

                #while GPIO.input(startPin) == False:
                #        handle_events()

                #while GPIO.input(startPin) == True:
                #        handle_events()

                #while GPIO.input(startPin) == False:
                #        handle_events()

                clearScreen()
                time.sleep(10)
                break