from PIL import Image, ImageOps
from PIL.ImageSequence import Iterator
from webptools import gifwebp
import subprocess
import os
from flask import abort
import requests
import time
from .const import *

def process_video(file):
	original = f'/videos/{time.time()}'.replace('.','')
	converted = f'{original}.mp4'
	file.save(original)
	ffmpreg_res = os.system(f'ffmpeg -y -loglevel warning -i {original} -map_metadata -1 {converted}')
	os.remove(original)
	if ffmpreg_res:
		print(f'ffmpeg returned {ffmpreg_res}', flush=True)
		# ffmpeg leaves a 0-sized output file usually but who knows what if it can be
		# tricked into generating something very large?
		try: os.remove(converted)
		except: pass

		return {"error": "Video conversion failed, choose a better video!"}

	with open(converted, 'rb') as f:
		if SITE_NAME != 'rDrama' or os.stat(converted).st_size > 8 * 1024 * 1024:
			os.remove(converted)
		try: req = requests.request("POST", "https://pomf2.lain.la/upload.php", files={'files[]': f}, timeout=20).json()
		except requests.Timeout: return {"error": "Video upload timed out, please try again!"}

	try: return req['files'][0]['url']
	except: return {"error": req.get('description', 'no description')}


def process_image(patron, filename=None, resize=0):
	size = os.stat(filename).st_size

	if size > 16 * 1024 * 1024 or not patron and size > 8 * 1024 * 1024:
		os.remove(filename)
		abort(413)

	i = Image.open(filename)

	if resize and i.width > resize:
		try: subprocess.call(["convert", filename, "-coalesce", "-resize", f"{resize}>", filename])
		except: pass
	elif i.format.lower() != "webp":

		exif = i.getexif()
		for k in exif.keys():
			if k != 0x0112:
				exif[k] = None
				del exif[k]
		i.info["exif"] = exif.tobytes()

		if i.format.lower() == "gif":
			gifwebp(input_image=filename, output_image=filename, option="-mixed -metadata none -f 100 -mt -m 6")
		else:
			i = ImageOps.exif_transpose(i)
			i.save(filename, format="WEBP", method=6)

	return filename