import asyncio

import discord

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(pass_context=True)

	@asyncio.coroutine 

	def tex(self, ctx, mathstring):

		"""Geeft een mooi LaTeX plaatje terug.

		Encapsuleer uw string in mooie \"

		Bijvoorbeeld: 

		!tex "a^b b^c \rightarrow d"

		"""

		preamble = "\\documentclass[10pt]{article}\\pagestyle{empty}\\usepackage[margin=1in]{geometry}\\usepackage[T1]{fontenc}\\usepackage{CJKutf8}\\usepackage[english]{babel}\\usepackage{amsmath, amsfonts}\\begin{document}"

		options = ["-T", "tight", "-z", "9", "--truecolor", "-D", "512"]

		preview(r'$$'+mathstring+'$$', viewer='file', filename='test.png', dvioptions=options, preamble=preamble)

		file = open('test.png', 'rb')

		yield from self.bot.upload(file, filename ='test.png', content='Nerd!')