from config import GRID_WIDTH, GRID_HEIGHT
from DataModels.Road import Road
import json, os, platform

def movement(environment, x ,y):
    movement = {
        "right": (x + 1, y) if x + 1 < GRID_WIDTH and type(environment[x + 1][y]) == Road else (x, y),
        "left": (x - 1, y) if x - 1 >= 0 and type(environment[x - 1][y]) == Road else (x, y),
        "down": (x, y + 1) if y + 1 < GRID_HEIGHT and type(environment[x][y + 1]) == Road else (x, y),
        "up": (x, y - 1) if y - 1 >= 0 and type(environment[x][y - 1]) == Road else (x, y)
    }

    forbidden_movement = {
        "right": "left",
        "left": "right",
        "up": "down",
        "down": "up"
    }

    return (movement, forbidden_movement)

def check_moves(environment, x,y,direction=None):
    if direction == None:
            return ([dir for dir in movement(environment, x, y)[0] if movement(environment, x,y)[0][dir] != (x,y)])
    return ([dir for dir in movement(environment, x, y)[0] if movement(environment, x,y)[0][dir] != (x,y) and dir != movement(environment,x,y)[1][direction]])

def save_moveset(moveset):
	if platform.system() == 'Windows':
		path = '\moveset_data.json'
	else:
		path = '/moveset_data.json'
	output_file = os.path.normpath(os.getcwd()) + path
	
	results = {}
	try:
		f = open(output_file, 'r+')
	except:
		open(output_file, 'a').close()
	finally:
		f = open(output_file, 'r+')
	
	try:
		results = json.load(f)
	except:
		pass
	finally:	
		if "moveset" not in results:
			results = { "moveset": [] }
	
	results["moveset"].append(moveset)
	f.seek(0)
	json.dump(results, f, indent=1)
	f.close()