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

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

from src.entities.Player import Player
from src.game.Timer import Timer


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

        try:
            configFolder = Path(str(filesPath) + "/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)

        # Initialize timers
        self.pgTimer = pygame.time.Clock()
        self.ingameTimer = Timer()
        self.ingameTimer.startClock()

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

        mapFile = Path(str(filesPath) + "/data/mapdata/")
        self.map = Map(path.join(mapFile, 'map.txt'), self.screen)
        self.player = Player((6, 2), self.map.tileSize)
        self.map.addEntity(self.player)
        self.eventManager = EventManager(self, self.player)

        self.mainLoop()

    def mainLoop(self):
        while self.running:
            # Update ingame clock
            self.ingameTimer.updateTime(self.pgTimer.tick())
            self.spritesList.update()
            self.eventManager.handleEvents()
            self.spritesList.draw(self.screen.pygameScreen)
            pygame.display.flip()