import logging
from typing import Dict, Callable, List, Union

import discord

logger = logging.getLogger(__name__)


class Game:
	"""
	Game state for one guild
	"""

	def __init__(self, config_dict: Dict, save_function: Callable, guild: discord.Guild):
		self.config = config_dict
		self.save_function = save_function
		self.guild = guild

	@staticmethod
	def new_dict():
		return {
			"game_started": False,
		}

	def is_started(self):
		return self.config["game_started"]

	def get_players_id(self) -> List[int]:
		return self.config["players"]

	def get_players(self) -> List[discord.Member]:
		return [self.guild.get_member(player) for player in self.get_players_id()]

	def get_player_info(self, player: Union[int, discord.Member]):
		if isinstance(player, discord.Member):
			player = player.id
		return self.config["player_info"][str(player)]

	def get_gm_role_id(self) -> int:
		return self.config["gm_role"]

	def get_gm_role(self) -> discord.Role:
		return self.guild.get_role(self.get_gm_role_id())

	def is_gm(self, user: discord.Member) -> bool:
		return self.get_gm_role() in user.roles

	def get_game_category_id(self) -> int:
		return self.config["category"]

	def get_game_category(self) -> discord.CategoryChannel:
		return self.guild.get_channel(self.get_game_category_id())

	async def start(self, gm_role: discord.Role, player_role: discord.Role):
		if self.is_started():
			raise ValueError("Game already started")
		logger.info(f"[{self.guild.name}] Starting game")
		self.config["gm_role"] = gm_role.id
		self.config["player_role"] = player_role.id
		self.config["players"] = [member.id for member in player_role.members]
		self.config["player_info"] = {str(player): {} for player in self.config["players"]}

		permissions = {
			self.guild.default_role: discord.PermissionOverwrite(send_messages = False),
			gm_role: discord.PermissionOverwrite(send_messages = True),
			player_role: discord.PermissionOverwrite(send_messages = True),
		}
		game_category = await self.guild.create_category("In-game", overwrites = permissions)
		self.config["category"] = game_category.id
		logger.debug(f"[{self.guild.name}] Created game category")

		permissions = {
			self.guild.default_role: discord.PermissionOverwrite(read_messages = False),
			gm_role: discord.PermissionOverwrite(read_messages = True),
		}
		self.config["admin_chan"] = (await game_category.create_text_channel("admin", overwrites = permissions)).id
		logger.debug(f"[{self.guild.name}] Created admin channel")

		permissions = {
			self.guild.default_role: discord.PermissionOverwrite(send_messages = False),
			gm_role: discord.PermissionOverwrite(send_messages = True),
		}
		self.config["announce_chan"] = (await game_category.create_text_channel("announce", overwrites = permissions)).id
		self.config["votes_chan"] = (await game_category.create_text_channel("votes", overwrites = permissions)).id
		logger.debug(f"[{self.guild.name}] Created announcements and votes channels")

		self.config["discussion_chan"] = (await game_category.create_text_channel("discussion")).id  # Permissions are inherited from the category
		logger.debug(f"[{self.guild.name}] Created discussion channel")

		for player in self.get_players():
			channel_permissions = {
				self.guild.default_role: discord.PermissionOverwrite(read_messages = False),
				player: discord.PermissionOverwrite(read_messages = True),
				gm_role: discord.PermissionOverwrite(read_messages = True),
			}
			player_channel = await game_category.create_text_channel(player.name, overwrites = channel_permissions)
			self.get_player_info(player)["channel"] = player_channel.id
		logger.debug(f"[{self.guild.name}] Created player channels")

		self.config["game_started"] = True
		self.save_function()

	async def delete(self):
		category = self.get_game_category()
		for channel in category.channels:
			await channel.delete()
		await category.delete()
		self.config.clear()
		self.config.update(self.new_dict())
		self.save_function()