import asyncio
import discord
import sys, os
from discord.ext import commands
from sympy import latex, symbols, preview, Symbol #for LaTeX images

class General(object):
	"""Overal toegestaan."""

	def __init__(self, bot):
		self.bot = bot
		self.voice_states = {}
	def __check(self, ctx): #Todo: Is dit het porno kanaal?
		return True
	@commands.command()
	@asyncio.coroutine 
	def tex(self, ctx, *, arg):
		"""Geeft een mooi LaTeX plaatje terug.
		Bijvoorbeeld: 
		!tex Je moeder is lelijk! $a^b b^c \\rightarrow d$
		"""
		preamble = "\\documentclass[10pt]{article}\\pagestyle{empty}\\usepackage[margin=1in]{geometry}\\usepackage{amsmath, amsfonts}\\begin{document}" #\\usepackage{CJKutf8}\\usepackage[T1]{fontenc}\\usepackage[english]{babel}
		options = ["-T", "tight", "-z", "9", "--truecolor", "-D", "512"]
		preview(r''+arg+'', viewer='file', filename='test.png', dvioptions=options, preamble=preamble)
		#file = open('test.png', 'rb')
		#yield from ctx.channel.send(file, filename ='test.png', content='')
		try:
			yield from ctx.message.delete()
		except:
			print("No permission to delete message")
		yield from ctx.channel.send(ctx.author.mention, file=discord.File('test.png', 'tex.png'))

	@commands.command(pass_context=True, hidden=True)
	@asyncio.coroutine 
	def reboot(self, ctx, password=""):
		""" Reboot.. """
		if password == "please":
			yield from ctx.channel.send("Rebooting.. brb!")
			os.execv(sys.executable, ['python3'] + sys.argv)
		else:
			yield from ctx.channel.send(ctx.author.mention + " What's the magic word?")