import os								# OS Locations
import yaml								# YAML parser for Bot config files
import asyncio							# Discord Py Dependency
import discord							# Main Lib
from discord.ext import commands		# Commands module
from discord_slash import SlashCommand, SlashContext, cog_ext, utils			# Slash Command Library
from discord_slash.utils.manage_commands import create_choice, create_option, create_permission	# Slash Command features
from discord_slash.model import SlashCommandPermissionType, ButtonStyle
from discord_slash.client import SlashCommand
from discord_slash.utils.manage_components import create_select, create_select_option, create_actionrow, wait_for_component, create_button, create_actionrow

import re

from bot import configFile, yaml_load, yaml_dump, cogsDir, unloadCog, dataFile, lookupFile, gmFile, categoriesFile

class GameManagement(commands.Cog, name='Game Management'):
	def __init__(self, client):
		self.client = client

	lookup = yaml_load(lookupFile)
	guild_ids= [ int(x) for x in list(lookup)]

### Move delete, Modify, and Reset commands to a separate secondary cog to enable when games exist?
	@cog_ext.cog_subcommand(
		base='game',
		# subcommand_group='',
		name='delete',
		description='Deletes a game role and accompanying category, text, voice channels, and data.',
		# base_description='Commands for setting up and removing games on the Guild.',
		# base_default_permission=False,
		# base_permissions=permissions,
		# subcommand_group_description='Adds a time slot available to the channel for games.',
		guild_ids=guild_ids,
		options=[
			create_option(
				name='game_role',
				description='The role representing the game you want to interact with.',
				option_type=8,
				required=True
			)
		]
	)
	async def _game_delete(self, ctx:SlashContext, game_role:discord.Role):
		await ctx.channel.trigger_typing()
		conf = yaml_load(configFile)
		data = yaml_load(dataFile)
		gms = yaml_load(gmFile)
		lookup = yaml_load(lookupFile)
		categories = yaml_load(categoriesFile)
		guildStr = str(ctx.guild.id)
		rStr = str(game_role.id)
		if 'bot' not in conf[guildStr]['roles']:
			await ctx.send(f'```Error: `Bot` role for guild `{ctx.guild.name}` has not been defined. Cannot configure game.```',hidden=True)
			return
		if rStr not in lookup[guildStr]:
			await ctx.send(f'```Error: This is not a valid game role. Please mention a role that is associated with a game.```', hidden=True)
			return
		if ctx.channel.category.id != lookup[guildStr][rStr]['category']:
			await ctx.send(f'```Error: You must issue this command in a text channel associated with the game you are trying to delete.```', hidden=True)
			return
		game_title = lookup[guildStr][rStr]['game_title']
		time = lookup[guildStr][rStr]['time']
		c = ctx.guild.get_channel(lookup[guildStr][rStr]['category'])
		gm = lookup[guildStr][rStr]['gm']
		channelsFound = False
		del data[guildStr][time][rStr]
		if c is not None:
			channelsFound = True
			for t in ctx.guild.text_channels:
				if t.category == c:
					await t.delete(reason=f'/game delete command issued by `{ctx.author.display_name}`')
			for v in ctx.guild.voice_channels:
				if v.category == c:
					await v.delete(reason=f'/game delete command issued by `{ctx.author.display_name}`')
			del categories[guildStr][str(c.id)]
			await c.delete(reason=f'/game delete command issued by `{ctx.author.display_name}`')
		lookup[guildStr].pop(rStr, None)
		gm_m = await ctx.guild.fetch_member(gm)
		output = f'The game `{game_title}` for timeslot `{conf[guildStr]["timeslots"][time]}` and with GM `{gm_m.display_name}` has been deleted.'
		if channelsFound:
			output = ''.join([output,' All associated text, voice, and category channels have been deleted.'])
		else:
			output = ''.join([output,' No associated text, voice, or category channels were found. Please delete them manually if they still persist.'])
		if 'mod' in conf[guildStr]['channels'] and 'committee' in conf[guildStr]['roles']:
				c = discord.utils.find(lambda x: x.id == conf[guildStr]['channels']['mod'], ctx.guild.channels)
				await c.send(
					content = f'```{output}```'
			)
		await game_role.delete(reason=f'/game delete command issued by `{ctx.author.display_name}`')
		gms[guildStr][str(gm)].remove(game_role.id)
		if not gms[guildStr][str(gm)]: del gms[guildStr][str(gm)]
		if not data[guildStr][time]: del data[guildStr][time]
		yaml_dump(lookup, lookupFile)
		yaml_dump(data, dataFile)
		yaml_dump(gms, gmFile)
		yaml_dump(categories, categoriesFile)
		if not any([x for x in yaml_load(lookupFile).values()]):
			unloadCog(f'./{cogsDir}/slashcommands/secondary/game_management.py')
			if self.client.get_cog('Player Commands') is not None: unloadCog(f'./{cogsDir}/slashcommands/secondary/player_commands.py')
			if self.client.get_cog('Pitch Command') is not None: unloadCog(f'./{cogsDir}/slashcommands/secondary/pitch.py')
			await self.client.slash.sync_all_commands()

	@cog_ext.cog_subcommand(
		base='game',
		# subcommand_group='',
		name='modify',
		description='Edit the information of an existing game channel.',
		# base_description='Commands for setting up and removing games on the Guild.',
		# base_default_permission=False,
		# base_permissions=permissions,
		# subcommand_group_description='Adds a time slot available to the channel for games.',
		guild_ids=guild_ids,
		options=[
			create_option(
				name='game_role',
				description='The role of the game you are trying to edit.',
				option_type=8,
				required=True,
			),
			create_option(
				name='timeslot',
				description='The new timeslot, if you are changing timeslots.',
				option_type=3,
				required=False
			),
			create_option(
				name='gm',
				description='The new GM, if the GM is changing.',
				option_type=6,
				required=False
			),
			create_option(
				name='max_players',
				description='The maximum number of players the game can take.',
				option_type=4,
				required=False
			),
			create_option(
				name='game_title',
				description='The new title if the title is changing.',
				option_type=3,
				required=False
			),
			create_option(
				name='min_players',
				description='The minimum number of players the gane can take.',
				option_type=4,
				required=False
			),
			create_option(
				name='current_players',
				description='The number players currently in the game.',
				option_type=4,
				required=False
			),
			create_option(
				name='system',
				description='What system the game is using.',
				option_type=3,
				required=False
			),
			create_option(
				name='platform',
				description='What platform the game will be running on.',
				option_type=3,
				required=False
			)
		]
	)
	async def _game_modify(
		self,
		ctx:SlashContext,
		game_role:discord.Role,
		timeslot:str=None,
		gm:discord.User=None,
		max_players:int=None,
		game_title:str=None,
		min_players:int=None,
		current_players:int=None,
		system:str=None,
		platform:str=None
	):
		await ctx.channel.trigger_typing()
		if all(x is None for x in [timeslot, gm, max_players, game_title, min_players, current_players, system, platform]):
			await ctx.send(f'```Error: No parameters have been entered to modify the game.```',hidden=True)
			return
		conf = yaml_load(configFile)
		data = yaml_load(dataFile)
		gms = yaml_load(gmFile)
		lookup = yaml_load(lookupFile)
		categories = yaml_load(categoriesFile)
		guildStr = str(ctx.guild.id)
		r = game_role
		rStr = str(r.id)
		old_time = lookup[guildStr][rStr]['time']
		time =  re.sub(r"\W+",'', timeslot[:9].lower()) if timeslot else old_time
		if guildStr not in lookup:
			lookup[guildStr] = {}
		if guildStr not in data:
			data[guildStr] = {}
		if time not in data[guildStr]:
			data[guildStr][time] = {}
		# Command Validation Checks
		if rStr not in lookup[guildStr]:
			await ctx.send(f'```Error: This is not a valid game role. Please mention a role that is associated with a game.```',hidden=True)
			return
		if timeslot is not None:
			if time not in conf[guildStr]['timeslots']:
				await ctx.send(f'```Error: Time code `{timeslot}` is not recognised. Please enter a valid time code to register the game. use `/config timeslots list` to get a list of valid time codes.```',hidden=True)
				return
		if any(x is not None and x < 0 for x in [min_players, max_players, current_players]):
			await ctx.send(f'```Error: You cannot enter negative integers for the number of players.```',hidden=True)
			return
		if min_players and max_players and min_players > max_players:
			await ctx.send(f'```Error: The minimum number of players cannot exceed the maximum number of players.```',hidden=True)
			return
		if current_players and max_players and current_players > max_players:
			await ctx.send(f'```Error: The number of reserved spaces cannot exceed the maximum number of players.```',hidden=True)
			return

		# Infer Old Data
		old_data = data[guildStr][old_time][rStr].copy()
		
		result = f'The game {old_data["game_title"]} has been updated.\n'

		## Change to the Title and/or Time Slot:
		if time != old_time:
			result = ''.join([result,f"The game's time slot has changed from {conf[guildStr]['timeslots'][time]} to {conf[guildStr]['timeslots'][time]}.\n"])
			del data[guildStr][old_time][rStr]
			if not data[guildStr][old_time]:
				del data[guildStr][old_time]
		if game_title and game_title != old_data['game_title']:
			if game_title in [x['game_title'] for x in lookup[str(ctx.guild.id)].values()] and time in [x['time'] for x in lookup[str(ctx.guild.id)].values()]:
				await ctx.send(f'```Error: The target game `{game_title}` has already been created for the time slot `{conf[guildStr]["timeslots"][time]}`. Please avoud duplicates, or use the `modify` sub-command to edit the existing game.```',hidden=True)
				return
			result = ''.join([result,f"The game's title has been updated to {game_title}\n"])
		game_title = old_data['game_title'] if not game_title else game_title
		if time != old_time or game_title != old_data['game_title']:
			result = ''.join([result,f"The names of the game role and channel categories have been changed to match the updated {'timeslot' if time != old_time and game_title == old_data['game_title'] else 'game title' if game_title != old_data['game_title'] and time == old_time else 'time slot and game title'}.\n"])
		
		# Update Role
		await r.edit(
			mentionable=True,
			name=f'{time.upper()}: {game_title}',
			permissions=discord.Permissions.none(),
			reason=f'/game modify command issued by `{ctx.author.display_name}`',
			colour=discord.Colour.green()
		)

		# Update GM
		if gm and gm.id != old_data['gm']:
			result = ''.join([result,f"The GM has been updated to {gm.display_name}.\n"])
			gms[guildStr][str(old_data['gm'])].remove(r.id)
			if not gms[guildStr][str(old_data['gm'])]:
				del gms[guildStr][str(old_data['gm'])]
		gm = await ctx.guild.fetch_member(old_data['gm']) if not gm else gm
		if r not in gm.roles:
			await gm.add_roles(r)
		
		# Update Category
		cExists = False
		permissions = {
			ctx.guild.default_role: discord.PermissionOverwrite(read_messages=False),
			r: discord.PermissionOverwrite(read_messages=True),
			ctx.guild.get_role(conf[guildStr]['roles']['bot']): discord.PermissionOverwrite(read_messages=True),
			gm: discord.PermissionOverwrite(
				read_messages=True,
				manage_messages=True,
				manage_channels=True,
				manage_permissions=True,
				priority_speaker=True,
				move_members=True,
				mute_members=True,
				deafen_members=True
			)
		}
		c_id = lookup[guildStr][rStr]['category']
		c = discord.utils.get(ctx.guild.categories, id=c_id)
		t_id = lookup[guildStr][rStr]['text_channel']
		t = discord.utils.get(ctx.guild.text_channels, id=t_id)
		if not c:
			c = await ctx.guild.create_category(
				name=f'{time.upper()}: {game_title}',
				overwrites=permissions,
				reason=f'/game modify command issued by `{ctx.author.display_name}`'
			)
			await c.create_voice_channel(
				name=f'voice: {game_title}',
				topic=f'Default voice channel for the game `{game_title}`` taking place at `{conf[guildStr]["timeslots"][time]}`, with GM `{gm.display_name}`.',
				reason=f'/game modify command issued by `{ctx.author.display_name}`'
			)
			t = await c.create_text_channel(
				name=f'text: {game_title}',
				topic=f'Default text channel for the game `{game_title}`` taking place at `{conf[guildStr]["timeslots"][time]}`, with GM `{gm.display_name}`.',
				reason=f'/game modify command issued by `{ctx.author.display_name}`'
			)
		else:
			cExists= True
			await c.edit(
				name=f'{time.upper()}: {game_title}',
				overwrites=permissions,
				reason=f'/game modify command issued by `{ctx.author.display_name}`',
			)
			tPos = len(ctx.guild.channels)
			t = None
			v = False
			for tc in c.text_channels:
				if tc.position <= tPos:
					t, tPos = tc, tc.position
				await t.edit(
					sync_permissions=True,
					reason=f'/game modify command issued by `{ctx.author.display_name}`'
				)
			for vc in c.voice_channels:
				await vc.edit(
					sync_permissions=True,
					reason=f'/game modify command issued by `{ctx.author.display_name}`'
				)
				v = True
			if not t:
				t = await c.create_text_channel(
					name=f'text: {game_title}',
					topic=f'Default text channel for the game `{game_title}`` taking place at `{conf[guildStr]["timeslots"][time]}`, with GM `{gm.display_name}`.',
					reason=f'/game modify command issued by `{ctx.author.display_name}`'
				)
			else:
				pins = await t.pins()
				if pins:
					hm = discord.utils.find(lambda x: x.content.startswith('```Hello ') and 'Your game channels for ' in x.content and x.author.id == self.client.user.id, pins)
					if hm:
						await hm.delete()
			if not v:
				await c.create_voice_channel(
					name=f'voice: {game_title}',
					topic=f'Default voice channel for the game `{game_title}`` taking place at `{conf[guildStr]["timeslots"][time]}`, with GM `{gm.display_name}`.',
					reason=f'/game modify command issued by `{ctx.author.display_name}`'
				)
		
		# Determine remaining variables
		max_players = old_data['max_players'] if not max_players else max_players
		min_players = old_data['min_players'] if not min_players else min_players
		current_players = old_data['current_players'] if not current_players else current_players
		platform = old_data['platform'] if not platform else platform
		system = old_data['system'] if not system else system

		result = ''.join(['```',result,f"The game has been configured with space for {max_players} players (with {current_players if current_players else '0'} currently occupied).",'```'])

		output = f'```Hello {gm.display_name}! Your game channels for `{game_title}` has been updated.\nYou can ping your players or edit the game settings by interacting with the game role through the Bot commands. Have fun!```\n'
		output = ''.join([output,f'```Game Title: {game_title}\n'])
		output = ''.join([output,f'GM: {gm.display_name}\n'])
		output = ''.join([output,f'Time: {conf[guildStr]["timeslots"][time]}\n'])
		output = ''.join([output,f'System: {system}\n'if system is not None else ''])
		output = ''.join([output,f'Max Players: {max_players}\n'])
		output = ''.join([output,f'Min Players: {min_players}\n'if min_players is not None else ''])
		output = ''.join([output,f'Current Players: {current_players if current_players else "0"}\n'])
		output = ''.join([output,f'Platform: {platform}```' if platform is not None else '```'])
		output = ''.join([output,f'\n\n{gm.mention} | {r.mention}'])
		await ctx.send(result,hidden=True)
		o = await t.send(output)
		await o.pin(reason=f'/game modify command issued by `{ctx.author.display_name}`')
		data[guildStr][time][rStr] = {
			'game_title': game_title,
			'gm': gm.id,
			'max_players': max_players,
			'min_players': min_players,
			'current_players': current_players,
			'system': system,
			'platform': platform,
			'role': r.id,
			'category': c.id,
			'text_channel': t.id,
			'header_message': o.id
		}
		lookup[guildStr][rStr] = {
			'category': c.id,
			'gm': gm.id,
			'time': time,
			'game_title': game_title,
			'text_channel': t.id
		}
		if guildStr not in gms: gms[guildStr] = {}
		if str(gm.id) not in gms[guildStr]: gms[guildStr][str(gm.id)] = []
		gms[guildStr][str(gm.id)].append(r.id)
		if guildStr not in categories: categories[guildStr] = {}
		categories[guildStr][str(c.id)] = r.id
		yaml_dump(data,dataFile)
		yaml_dump(lookup,lookupFile)
		yaml_dump(gms,gmFile)
		yaml_dump(categories, categoriesFile)

	@cog_ext.cog_subcommand(
		base='game',
		# subcommand_group='',
		name='purge',
		description='Delete all games in a given timeslot.',
		# base_description='Commands for setting up and removing games on the Guild.',
		# base_default_permission=False,
		# base_permissions=permissions,
		# subcommand_group_description='Adds a time slot available to the channel for games.',
		guild_ids=guild_ids,
	)
	async def _game_purge(
		self,
		ctx:SlashContext
	):
		await ctx.channel.trigger_typing()
		conf = yaml_load(configFile)
		data = yaml_load(dataFile)
		lookup = yaml_load(lookupFile)
		gms = yaml_load(gmFile)
		categories = yaml_load(categoriesFile)
		guildStr = str(ctx.guild.id)

		async def purgeGames(ctx:SlashContext, timeslot:str):
			for g in list(data[guildStr][timeslot].values()):
				c = discord.utils.find(lambda x: x.id == g['category'], ctx.guild.categories)
				r = discord.utils.find(lambda x: x.id == g['role'], ctx.guild.roles)
				for x in c.channels:
					await x.delete(reason=f'/game purge command issued by `{ctx.author.display_name}`')
				del categories[guildStr][str(c.id)]
				await c.delete(reason=f'/game purge command issued by `{ctx.author.display_name}`')
				await r.delete(reason=f'/game purge command issued by `{ctx.author.display_name}`')
				gms[guildStr][str(g['gm'])].remove(r.id)
				if not gms[guildStr][str(g['gm'])]:
					del gms[guildStr][str(g['gm'])]
				del lookup[guildStr][str(r.id)]
			del data[guildStr][timeslot]

		if 'timeslots' not in conf[guildStr]: conf[guildStr]['timeslots'] = {}
		tsDict = {k: conf[guildStr]['timeslots'][k] for k in data[guildStr] if data[guildStr][k]}
		optionsList = [create_select_option(label=tsDict[x], value=x, description=x) for x in tsDict]
		optionsList.insert(0, create_select_option(label='All Timeslots', value='--all', description='--all'))
		try:
			m = await ctx.send(
				content='```Select which time slot for which you would like to purge all games.```',
				delete_after=5,
				components=[
					create_actionrow(
						create_select(
							placeholder='Time Slot',
							options= optionsList,
							min_values=1,
							max_values=1
						)
					)
				]
			)
			while True:
				select_ctx = await wait_for_component(self.client,messages=m, timeout=5)
				if select_ctx.author != ctx.author:
					await select_ctx.send(f'```Invalid response: you are not the person who issued the command.```', hidden=True)
				else:
					break
			await m.delete()
			[timeslot] = select_ctx.selected_options
		except asyncio.TimeoutError:
			await ctx.send(f'```Error: Command timed out.```', hidden=True)
			return
		if timeslot == '--all':
			m = await ctx.send(
				content=f'```You are attempting to purge games for all time slots. This will delete every game currently running for guild {ctx.guild.name}. Are you sure?```',
				delete_after=5,
				components=[
					create_actionrow(
						create_button(
							style=ButtonStyle.green,
							label='Yes',
							emoji='👍',
							custom_id='purge_yes',
						),
						create_button(
							style=ButtonStyle.red,
							label='No',
							emoji='👎',
							custom_id='purge_no',
						)
					)
				]
			)
			while True:
				button_ctx = await wait_for_component(self.client, messages=m, timeout=5)
				if button_ctx.author != ctx.author:
					await button_ctx.send(f'```Invalid response: you are not the person who issued the command.```', hidden=True)
				else:
					break
			await m.delete()
			if button_ctx.custom_id == 'purge_no':
				await ctx.send(f'```The action `/game purge --all` has been aborted.```',hidden=True)
				return
			await ctx.channel.trigger_typing()
			ctx_id = ctx.channel.id
			for t in list(data[guildStr]): await purgeGames(ctx=ctx, timeslot=t)
			if discord.utils.find(lambda x: x.id == ctx_id, ctx.guild.text_channels) is not None:
				await ctx.send(
					content = '```All games for all time slots have been purged.```',
					hidden=True
				)
			else:
				if 'mod' in conf[guildStr]['channels'] and 'committee' in conf[guildStr]['roles']:
					c = discord.utils.find(lambda x: x.id == conf[guildStr]['channels']['mod'], ctx.guild.channels)
					await c.send(
						content = '```All games for all time slots have been purged.```'
					)
		else:
			m = await ctx.send(
				content=f'```You are attempting to purge games for `{conf[guildStr]["timeslots"][timeslot]}` for guild {ctx.guild.name}. Are you sure?```',
				delete_after=5,
				components=[
					create_actionrow(
						create_button(
							style=ButtonStyle.green,
							label='Yes',
							emoji='👍',
							custom_id='purge_yes',
						),
						create_button(
							style=ButtonStyle.red,
							label='No',
							emoji='👎',
							custom_id='purge_no',
						)
					)
				]
			)
			while True:
				button_ctx = await wait_for_component(self.client, messages=m, timeout=5)
				if button_ctx.author != ctx.author:
					await button_ctx.send(f'```Invalid response: you are not the person who issued the command.```', hidden=True)
				else:
					break
			await m.delete()
			if button_ctx.custom_id == 'purge_no':
				await ctx.send(f'```The action `/game purge {timeslot}` has been aborted.```',hidden=True)
				return
			await ctx.channel.trigger_typing()
			ctx_id = ctx.channel.id
			await purgeGames(ctx=ctx, timeslot=timeslot)
			if discord.utils.find(lambda x: x.id == ctx_id, ctx.guild.text_channels) is not None:
				await ctx.send(
					content = f'```All games for time slot `{conf[guildStr]["timeslots"][timeslot]}` have been purged.```',
					hidden=True
				)
			else:
				if 'mod' in conf[guildStr]['channels'] and 'committee' in conf[guildStr]['roles']:
					c = discord.utils.find(lambda x: x.id == conf[guildStr]['channels']['mod'], ctx.guild.channels)
					await c.send(
						content = f'```All games for time slot `{conf[guildStr]["timeslots"][timeslot]}` have been purged.```'
				)
		yaml_dump(gms,gmFile)
		yaml_dump(lookup,lookupFile)
		yaml_dump(data,dataFile)
		yaml_dump(categories,categoriesFile)
		if not any([x for x in yaml_load(lookupFile).values()]):
			unloadCog(f'./{cogsDir}/slashcommands/secondary/game_management.py')
			if self.client.get_cog('Player Commands') is not None: unloadCog(f'./{cogsDir}/slashcommands/secondary/player_commands.py')
			if self.client.get_cog('Pitch Command') is not None: unloadCog(f'./{cogsDir}/slashcommands/secondary/pitch.py')
			await self.client.slash.sync_all_commands()

def setup(client):
	client.add_cog(GameManagement(client))