import pygame
import json
from pathlib import Path
from os import path

from game.EventManager import EventManager
from game.Screen import Screen
from game.Map import Map
from src.entities.Player import Player


class Game:
    def __init__(self):
        self.running = True
        print("Loading configuration...", end=" ")

        try:
            configFolder = Path("../data/config/")
            configFile = configFolder / "mainConfig.json"

            self.config = json.loads(configFile.read_text())

            print("OK")
        except IOError:
            print("Error reading configuration file. Exiting...")
            exit(1)

        print("Initializing pygame...", end=" ")
        pygame.init()
        self.spritesList = pygame.sprite.Group()

        print("OK")
        print("Initializing screen, params: " + str(self.config["window"]) + "...", end=" ")

        # Vertical rotation is unsupported due to UI layout
        if self.config["window"]["height"] > self.config["window"]["width"]:
            print("The screen cannot be in a vertical orientation. Exiting...")
            exit(1)

        self.screen = Screen(self, self.config["window"])
        print("OK")

        self.mapDataFolder = path.dirname("../data/mapdata/")
        self.map = Map(path.join(self.mapDataFolder, 'map.txt'), self.screen)
        self.player = Player((0, 0), self.map.tileSize)
        self.map.addEntity(self.player)
        self.eventManager = EventManager(self, self.player)

        self.mainLoop()

    def mainLoop(self):
        while self.running:
            self.eventManager.handleEvents()
            self.spritesList.draw(self.screen.pygameScreen)
            pygame.display.flip()