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, ComponentContext			# Slash Command Library
from discord_slash.utils.manage_components import create_select, create_select_option, create_actionrow, wait_for_component, create_button, create_actionrow
from discord_slash.utils.manage_commands import create_choice, create_option
from discord_slash.model import ButtonStyle
import logging
# logger and handler
from bot import configFile, yaml_load, categoriesFile, configFile, lookupFile

##### Membership Verification Cog

class MemberVerification(commands.Cog, name='Member Verification Cog'):
	def __init__(self, client):
		self.client = client

	@commands.Cog.listener(name='on_message')
	async def _submission_listener(self, message):
		conf = yaml_load(configFile)
		categories = yaml_load(categoriesFile)
		guildStr = str(message.guild.id)
		lookup = yaml_load(lookupFile)
		if conf[guildStr]['channels'].get('signup', None) is None: return
		if message.author.bot: return
		if message.channel.id != conf[guildStr]['channels']['signup']: return
		if not (message.attachments):
			await message.channel.send(f'```Error: The message you posted in the `{message.channel.name}` channel of the guild `{message.guild.name}` was invalid. Your post must contain a screensot of your proof of purchase for membership.```')
			await message.delete()
			return
		membership = [discord.utils.get(message.guild.roles, id=x) for x in conf[guildStr]['membership']]
		membership_options = [create_select_option(label=x.name, value=str(x.id), description='Membership type.') for x in membership]
		admin_buttons = []
		if conf[guildStr]['roles'].get('student', None) is not None: admin_buttons.append(create_button(style=ButtonStyle.blurple, label='Student', emoji='📚', custom_id=f'student_{message.id}'))
		admin_buttons.append(create_button(style=ButtonStyle.grey, label='Alert', emoji='⚠️', custom_id=f'alert_{message.id}'))
		admin_buttons.append(create_button(style=ButtonStyle.red, label='Deny', emoji='✖️', custom_id=f'deny_{message.id}'))
		admin_buttons.append(create_button(style=ButtonStyle.green, label='Done', emoji='▶️', custom_id=f'done_{message.id}'))
		o = f'```For Administrators: Please verify the membership request submitted by `{message.author.display_name}`.```'
		admins = '|'.join([discord.utils.get(message.guild.roles, id=x).mention for x in conf[guildStr]['roles']['admin']])
		o = ''.join((admins,o))
		m = await message.reply(
			content= o,
			components=[
				create_actionrow(
					create_select(
						options=membership_options,
						custom_id=f'membership_{message.id}',
						placeholder=f'Please select a membership to assign to {message.author.display_name}',
						min_values=1,
						max_values=1
					)
				),
				create_actionrow(
					*admin_buttons
				)
			]
		)
		if conf[guildStr]['notifications'].get('signup', False):
			embed = discord.Embed(
				title = f'Member Verification Request',
				description = f'User: {message.author.name}\n\n[Jup to Message]({m.jump_url})',
				colour = discord.Colour.blue(),
			)
		if conf[guildStr]['channels'].get('mod', None) is not None:
			await message.guild.get_channel(conf[guildStr]['channels']['mod']).send(f'```New membership verification request.```\n{admins}', embed=embed)	

	
	@commands.Cog.listener(name='on_component')
	async def _verification_response(self, ctx:ComponentContext):
		conf = yaml_load(configFile)
		categories = yaml_load(categoriesFile)
		guildStr = str(ctx.guild.id)
		admins = '|'.join([discord.utils.get(ctx.guild.roles, id=x).mention for x in conf[guildStr]['roles']['admin']])
		lookup = yaml_load(lookupFile)
		if ctx.channel.id != conf[guildStr]['channels']['signup']: return
		if not (set(ctx.author.roles) & set([ctx.guild.get_role(x) for x in conf[str(ctx.guild.id)]['roles']['admin']]) or ctx.author == ctx.guild.owner):
			await ctx.send(f'```Error: You are not authorised to assign memberships for guild `{ctx.guild.name}`. Only administrators may assign memberships using this interface.```', hidden=True)
		else:
			submission = await ctx.channel.fetch_message(int(ctx.custom_id.split('_',1)[1]))
			if ctx.custom_id.startswith('done_'):
				await ctx.send(f'```Membership verification complete.```', hidden=True)
				await ctx.origin_message.delete()
			elif ctx.custom_id.startswith('deny_'):
				await ctx.send(f'```Membership verification denied.```', hidden=True)
				embed = discord.Embed(
					title = submission.author.name,
					description = f'[Jup to Message]({submission.jump_url})',
					colour = discord.Colour.red(),
				)
				await submission.channel.send(f'```Your membership for guild `{submission.guild.name}` could not be verified. Please make sure your name and the kind of membership that you have bought are visible in the screenshot you upload. Please contact a Committee member if you have any difficulties.```')
				if conf[guildStr]['channels'].get('mod', None) is not None:
					await submission.guild.get_channel(conf[guildStr]['channels']['mod']).send(f'```Verifying the membership of {submission.author.display_name} failed.```\n{admins}', embed=embed)
				await ctx.origin_message.delete()
			elif ctx.custom_id.startswith('alert_'):
				await ctx.send(f'```Membership verification alert raised.```', hidden=True)
				embed = discord.Embed(
					title = submission.author.name,
					description = f'[Jup to Message]({submission.jump_url})',
					colour = discord.Colour.orange()
				)
				await submission.channel.send(f'```Your membership for guild `{submission.guild.name}` needs to be reviewed by a Committee member.```')
				if conf[guildStr]['channels'].get('mod', None) is not None:
					await submission.guild.get_channel(conf[guildStr]['channels']['mod']).send(f'```There is a problem verifying the membership of {submission.author.display_name}.\nCould someone verify this person\'s membership manually via the EUSA portal?.```\n{admins}', embed=embed)
			elif ctx.custom_id.startswith('student_'):
				await ctx.send(f'````Student` role granted.```', hidden=True)
				student_role = submission.guild.get_role(conf[guildStr]['roles']['student'])
				await submission.author.add_roles(student_role, reason=f'Membership Verification: Student role assigned by `{ctx.author.display_name}`.')
				await submission.channel.send(f'```You have additionally been assigned the role `Student` in the guild `{submission.guild.name}`.```')
			elif ctx.custom_id.startswith('membership_'):
				[selected_membership] = ctx.selected_options
				selected_role = ctx.guild.get_role(int(selected_membership))
				if selected_role not in submission.author.roles:
					await ctx.send(f'```Membership `{selected_role.name}` added to member `{submission.author.display_name}`.```', hidden=True)
					await submission.author.add_roles(selected_role, reason=f'Membership Verification: Membership verified by `{ctx.author.display_name}`.')
					await submission.channel.send(f'```Your membership for guild `{submission.guild.name}` has been verified and you have been assigned the role `{selected_role.name}`.```')
				else:
					await ctx.send(f'```Membership `{selected_role.name}` removed from member `{submission.author.display_name}`.```', hidden=True)
					await submission.author.remove_roles(selected_role, reason=f'Membership Verification: Membership removed by `{ctx.author.display_name}`.')
					await submission.channel.send(f'```Your role `{selected_role.name}` has been removed in the guild `{submission.guild.name}`.```')
			else:
				pass

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