import sys
import pygame
import os
from .input import Input
from .command import Command
from .game import Game
import logging
import json

WHITE = (255, 255, 255)
BLACK = (0, 0, 0)
IS_DEVELOPMENT_MODE = os.getenv("DEVELOPMENT", "").lower() != ""
OPTIONS = Game.all() + ["Quit"]
logger = logging.getLogger(__name__)
WIDTH = HEIGHT = FONT = screen = selected_index = None


def init_display():
    global WIDTH, HEIGHT, FONT, screen, selected_index

    WIDTH, HEIGHT = (
        pygame.display.Info().current_w // 2,
        pygame.display.Info().current_h // 2,
    )
    FONT = pygame.font.Font(None, 36)
    screen = pygame.display.set_mode(
        (WIDTH, HEIGHT) if IS_DEVELOPMENT_MODE else (0, 0),
        0 if IS_DEVELOPMENT_MODE else pygame.FULLSCREEN,
    )
    selected_index = 0


def draw_menu():
    screen.fill(WHITE)

    for i, option in enumerate(OPTIONS):
        text = FONT.render(option, True, BLACK if i != selected_index else (200, 0, 0))

        screen.blit(text, (WIDTH // 2 - text.get_width() // 2, 150 + i * 50))

    pygame.display.flip()


def process_events(serial, instance, is_joint_mode):
    global selected_index

    input_handler = Input(debug=IS_DEVELOPMENT_MODE)

    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            return {"command": Command.QUIT.value, "action": None, "value": None}

        action = input_handler.get_input(event)

        if action == "UP":
            selected_index = (selected_index - 1) % len(OPTIONS)
        elif action == "DOWN":
            selected_index = (selected_index + 1) % len(OPTIONS)
        elif action == "SELECT":
            if OPTIONS[selected_index] == "Quit":
                if instance == "primary":
                    return {
                        "command": Command.QUIT.value,
                        "action": None,
                        "value": None,
                    }
                else:
                    pygame.quit()
                    sys.exit()
            else:
                return {
                    "command": Command.SELECT_GAME.value,
                    "action": None,
                    "value": OPTIONS[selected_index],
                }
        elif action == "QUIT":
            return {"command": Command.QUIT.value, "action": None, "value": None}

        if (
            event.type == pygame.KEYDOWN
            and event.key == pygame.K_b
            and instance == "primary"
            and IS_DEVELOPMENT_MODE
        ):
            is_joint_mode[0] = not is_joint_mode[0]

            logger.info(f"Toggled joint mode to {is_joint_mode[0]}")

            command = (
                Command.ENTER_JOINT_MODE.value
                if is_joint_mode[0]
                else Command.EXIT_JOINT_MODE.value
            )

            serial.write(json.dumps({"command": command}).encode("utf-8"))

    return None