import contextlib
from functools import partial
import sys
from typing import Callable, NoReturn

import pygame

from ..color import Color
from ..controller import Input, KeyboardController, JoystickController
from .base_screen import Screen
from ..player import Player, WouldCollide
from ..misc import Pause


def handle_input_pressed(instance, players: list[Player], event: pygame.event.Event) -> None:
    for player in players:
        if isinstance(player.controller, instance):
            player.handle_input_pressed(event)


def handle_input_released(instance, players: list[Player], event: pygame.event.Event) -> None:
    for player in players:
        if isinstance(player.controller, instance):
            player.handle_input_released(event)

# Number of frames
frames_per_gridcell = [48, 43, 38, 33, 28, 23, 18, 13, 8, 6, 5, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1]

right_pane_canvas = pygame.Surface((300, 1000))
right_pane_canvas.fill((255, 255, 255))


class InGame(Screen):
    def __init__(self, players: list[Player], screen: pygame.surface.Surface):
        self.players: list[Player] = players
        self.screen: pygame.surface.Surface = screen
        self.event_handler: dict[int, Callable[[pygame.event.Event], None]] = {}

        def exit(_) -> NoReturn:
            sys.exit()

        self.event_handler[pygame.QUIT] = exit
        self.event_handler[pygame.KEYDOWN] = partial(handle_input_pressed, KeyboardController, self.players)
        self.event_handler[pygame.KEYUP] = partial(handle_input_released, KeyboardController, self.players)
        self.event_handler[pygame.JOYBUTTONDOWN] = partial(handle_input_pressed, JoystickController, self.players)
        self.event_handler[pygame.JOYBUTTONUP] = partial(handle_input_released, JoystickController, self.players)

    def refresh_right_pane_canvas(self) -> None:
        for player in self.players:
            player.level_canvas.fill(Color.black.value)
            player.score_canvas.fill(Color.black.value)

        if pygame.font:
            score_font = pygame.font.Font(None, 56)

            player.score_canvas.blit(score_font.render(f"{player.score:08d}", True, Color.white.value), (0, 0))
            player.level_canvas.blit(score_font.render(f"{player.level:08d}", True, Color.white.value), (0, 0))
            right_pane_canvas.blit(player.score_canvas, (2, 10))
            right_pane_canvas.blit(player.level_canvas, (2, 70))

            right_pane_canvas.blit(player.piece_preview_canvas, (50, 200))


    def refresh(self) -> None:
        for player in self.players:
            player.refresh_grid_canvas()
            self.screen.blit(player.grid_canvas, (0, 0))
            self.refresh_right_pane_canvas()
            self.screen.blit(right_pane_canvas, (501, 0))

    def oneframe(self) -> None:
        for player in self.players:
            player.piece_drop_frames += 1

        try:
            for event in pygame.event.get():
                with contextlib.suppress(KeyError):
                    self.event_handler[event.type](event)
        except Pause:
            pygame.event.clear()
            raise

        for player in self.players:
            player.das += 1
            if player.das == 16:
                with contextlib.suppress(WouldCollide):
                    if player.controller.is_pressed(Input.MOVE_RIGHT):
                        player.move_piece_right()
                    if player.controller.is_pressed(Input.MOVE_LEFT):
                        player.move_piece_left()
                player.das = 10

            if player.pressing_down_countdown == 0:
                try:
                    player.move_piece_down()
                except WouldCollide:
                    player.lock_piece()
                player.pressing_down_countdown = 2
            elif player.pressing_down_countdown is not None:
                player.pressing_down_countdown -= 1

            if player.piece_drop_frames >= frames_per_gridcell[player.level - 1]:
                player.piece_drop_frames = 0
                try:
                    player.move_piece_down()
                except WouldCollide:
                    player.lock_piece()