import math
import random

from discord import Interaction
from discord.app_commands import command

from rocketbot.bot import Rocketbot
from rocketbot.cogs.basecog import BaseCog


class GamesCog(BaseCog, name="Games"):
	"""Some really basic games or approximations thereof."""
	def __init__(self, bot: Rocketbot):
		super().__init__(
			bot,
			config_prefix='games',
			short_description='Some stupid, low effort games.',
		)

	@command(
		description='Creates a really terrible Minesweeper puzzle.'
	)
	async def minesweeper(self, interaction: Interaction):
		# Generate grid with randomly placed mines
		width = 8
		height = 8
		mine_count = math.ceil(width * height * 0.15)
		grid = [[0 for _ in range(width)] for _ in range(height)]
		for _ in range(mine_count):
			while True:
				x, y = random.randint(0, width - 1), random.randint(0, height - 1)
				if grid[x][y] == 0:
					grid[x][y] = -1
					break

		# Update free spaces with mine counts
		for y in range(height):
			for x in range(width):
				if grid[x][y] < 0:
					# Mine
					continue
				nearby_mine_count = 0
				for y0 in range(y - 1, y + 2):
					for x0 in range(x - 1, x + 2):
						if 0 <= x0 < width and 0 <= y0 < height and grid[x0][y0] < 0:
							nearby_mine_count += 1
				grid[x][y] = nearby_mine_count

		# Pick a non-mine starting tile to reveal
		start_x = 0
		start_y = 0
		while True:
			x, y = math.floor(random.gauss(width / 2, width / 4)), math.floor(random.gauss(height / 2, height / 4))
			if 0 <= x < width and 0 <= y < height and grid[x][y] >= 0:
				start_x, start_y = x, y
				break

		# Render
		text = ''
		symbols = [
			'\u274C',  # cross mark (red X)
			'0\uFE0F\u20E3',  # 0 + variation selector 16 + combining enclosing keycap
			'1\uFE0F\u20E3',
			'2\uFE0F\u20E3',
			'3\uFE0F\u20E3',
			'4\uFE0F\u20E3',
			'5\uFE0F\u20E3',
			'6\uFE0F\u20E3',
			'7\uFE0F\u20E3',
			'8\uFE0F\u20E3',
		]
		for y in range(height):
			text += '    '
			for x in range(width):
				is_revealed = x == start_x and y == start_y
				if not is_revealed:
					text += '||'
				val = grid[x][y]
				text += symbols[val + 1]
				if not is_revealed:
					text += '||'
				text += ' '
			text += '\n'

		await interaction.response.send_message(
			f"Here's a really terrible randomized Minesweeper puzzle. Sorry. I did my best.¹\n"
			f"Uncover everything except the {mine_count} :x: mines.\n\n"
			f"{text}\n"
			"-# ¹ I mean, not really.",
			ephemeral=True,
		)