from os import environ
from sys import maxsize, platform 

import pygame
from pygame import display, image, mouse
from pygame.locals import *

from .GameChild import *

class Display(GameChild):

    def __init__(self, game):
        GameChild.__init__(self, game)
        print(f"available fullscreen modes: {pygame.display.list_modes()}")
        self.delegate = self.get_delegate()
        self.load_configuration()
        self.align_window()
        self.init_screen()
        self.set_caption()
        self.set_icon()
        self.set_mouse_visibility()
        self.subscribe(self.toggle_fullscreen)

    def load_configuration(self):
        config = self.get_configuration("display")
        self.centered = config["centered"]
        self.fullscreen_enabled = config["fullscreen"]
        self.caption = config["caption"]
        self.windowed_flag = config["windowed-flag"]
        self.icon_path = self.get_resource("display", "icon-path")
        self.mouse_visibility = self.get_configuration("mouse", "visible")

    def align_window(self):
        if self.centered:
            environ["SDL_VIDEO_CENTERED"] = "1"

    def init_screen(self):
        full = False
        if self.fullscreen_requested():
            full = True

        # Added pygame.SCALED to avoid fullscreen bug
        # <https://www.pygame.org/docs/ref/display.html#pygame.display.toggle_fullscreen>
        try:
            self.set_screen(pygame.SCALED, fs=full)
        except AttributeError:
            self.set_screen(fs=full)

    def fullscreen_requested(self):
        return not self.check_command_line(self.windowed_flag) and self.fullscreen_enabled

    def set_screen(self, flags=0x0, dimensions=None, fs=False):
        self.dimensions_changed = dimensions is not None
        if dimensions is None:
            if display.get_surface():
                dimensions = display.get_surface().get_size()
            else:
                dimensions = self.get_configuration("display", "dimensions")
        if fs:
            self.screen = display.set_mode(dimensions, flags | -0x80000000)
        else:
            self.screen = display.set_mode(dimensions, flags)
        if self.dimensions_changed:
            interpolator = self.get_game().interpolator
            if interpolator.gui_enabled:
                interpolator.gui.rearrange()

    def set_caption(self):
        display.set_caption(self.caption)

    def set_icon(self):
        if self.icon_path:
            display.set_icon(image.load(self.icon_path).convert_alpha())

    def set_mouse_visibility(self, visibility=None):
        if visibility is None:
            visibility = self.mouse_visibility
        return mouse.set_visible(visibility)

    def get_screen(self):
        return self.screen

    def get_size(self):
        return self.screen.get_size()

    def toggle_fullscreen(self, event):
        if self.delegate.compare(event, "toggle-fullscreen"):
            pygame.display.toggle_fullscreen()