import asyncio
import discord
import sys, os
import praw
import random
import re
from discord.ext import commands
from sympy import latex, symbols, preview, Symbol #for LaTeX images
import youtube_dl
import ffmpeg

class General(commands.Cog):
	"""Overal toegestaan."""

	def __init__(self, bot):
		self.bot = bot
		self.voice_states = {}
		self.r = praw.Reddit(
			user_agent='StroopwafelBot',
			client_secret=self.bot.tokens["redditSecret"],
			client_id=self.bot.tokens["redditId"]
		)
		self.r.read_only = True

	def __check(self, ctx): #Todo: Is dit het porno kanaal?
		return True

	@commands.command()
	@asyncio.coroutine
	def huge(self, ctx, *, arg):
		"""YUGE. Geeft een grote versie van de gegeven emoji terug. Werkt alleen voor custom emoji.
		Bijvoorbeeld:
		!huge :ancilla:
		"""
		id = re.search("\<\:([A-z]*)\:(\d*)\>", arg)
		hugemoji = 'https://cdn.discordapp.com/emojis/' + id.group(2) + '.png'
		em = discord.Embed(title=id.group(1), type='photo')
		em.set_image(url=hugemoji)
		try:
			yield from ctx.message.delete()
		except:
			print("No permission to delete message")
		yield from ctx.channel.send(ctx.author.mention, embed=em)

	@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)
	@asyncio.coroutine
	def aww(self, ctx):
		""" iets schattigs... """
		print(type(ctx.message.channel))
		raww = self.r.subreddit('aww+catloaf+tuckedinkitties+babyelephantgifs+babybigcatgifs+blep+holdmynip+gingerkitty+cathighfive+catsstandingup+catsareassholes+eyebleach')
		post = raww.top('month', limit=250)
		listing = list(post)
		random.shuffle(listing)
		post = listing[0]

		try:
			yield from ctx.message.delete()
		except:
			print("No permission to delete message")
		yield from ctx.channel.send(ctx.author.mention + ' ' + post.url)

	@commands.command(pass_context=True)
	@asyncio.coroutine
	def kopieerpasta(self, ctx):
		""" iets schattigs... """
		print(type(ctx.message.channel))
		rkopieerpasta = self.r.subreddit('kopieerpasta')
		post = rkopieerpasta.top('month', limit=250)
		listing = list(post)
		random.shuffle(listing)
		post = listing[0]

		try:
			yield from ctx.message.delete()
		except:
			print("No permission to delete message")
		yield from ctx.channel.send('**'+post.title+'**```'+post.selftext+'```')
	
	@commands.command(pass_context=True)
	@asyncio.coroutine
	def gif(self, ctx, yt: str, start: str="0", duration: str="5", res: str="320", fps: int=10):
		""" Giffify. 
		Syntax: !gif [YT] [START] [DUUR] [RESOLUTIE] [FPS]
		Bv: !gif RPxvTd_jCPQ 10 5 320 10
		Alleen de Youtube ID is nodig.
		Start en duur zijn in seconden.
		Resolutie is de breedte
		"""
		try:
			yield from ctx.message.delete()
		except:
			print("No permission to delete message")
		try:
			os.remove('temp')
		except:
			pass
		ydl_opts = {
			'outtmpl': 'temp',
			'format': 'bestvideo[ext=mp4]/mp4'
		}
		with youtube_dl.YoutubeDL(ydl_opts) as ydl:
			ydl.download([yt])
		split = ffmpeg.input('temp').trim(start=start, duration=duration).filter_('fps',fps=fps).filter_('scale', w=res, h=-1).filter_multi_output('split')
		pal = split.stream(0).filter_('palettegen')
		inputs = {
			'v1':split.stream(1), 
			'v2':pal
		}
		gif = (
			ffmpeg
			.filter(stream_spec=[split.stream(1), pal], filter_name='paletteuse')
			.output('out.gif')
			.overwrite_output()
			.run()
		)
		yield from ctx.channel.send(ctx.author.mention + ' hoi ', file=discord.File('out.gif'))

	@commands.command(pass_context=True, hidden=True)
	@asyncio.coroutine 
	def reboot(self, ctx, password=""):
		""" Reboot.. """
		if password == self.bot.passwords["resetpassword"]:
			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?")