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from src.VaporSong import VaporSong
from src.VHSImage import generateVHSStyle
from src.VHSVideo import VHS_Vid
import os
import youtube_dl
from logzero import logger
import re
import urllib.request
import urllib.parse
import argparse

version = 2.1
style = False

text = "| V A P O R W A V E || G E N E R A T O R |"

parser = argparse.ArgumentParser(description=text)
parser.add_argument("-M", "--music", help="generate  v a p o r w a v e  music", action="store_true")
parser.add_argument("-P", "--picture", help="generate VHS Style image", action="store_true")
parser.add_argument("-V", "--video", help="VHS Style Video", action="store_true")
parser.add_argument("-v", "--version", help="show program version", action="store_true")
parser.add_argument("-i", "--input")
parser.add_argument("-o", "--output", help="Output for specifying output video")
parser.add_argument("-d","--date",help="Custom Date in yyyy/mm/dd format. e.g 2020/5/14")
parser.add_argument("-t","--time",help="Custom Time in HH:MM format. e.g 11:23")


args = parser.parse_args()

music = False
picture = False
video = False
date = None
time = None

if args.version:
    print("vaporwave generator 旺育栄", version)
    exit
if args.music:
    music = True
elif args.picture:
    picture = True
elif args.video:
    video = True
if args.input:
    query = args.input
if args.output:
    outfile = args.output
if args.date:
    date = args.date
if args.time:
    time = args.time
else:
    parser.print_help()
    exit

MAX_DURATION = 600  # In-case the program finds a compilation
youtube_urls = (
    "youtube.com",
    "https://www.youtube.com/",
    "http://www.youtube.com/",
    "http://youtu.be/",
    "https://youtu.be/",
    "youtu.be",
)


def download_file(query, request_id=1):
    """Returns audio to the vapor command handler

    Searches YouTube for 'query', finds first match that has
    duration under the limit, download video with youtube_dl
    and extract .wav audio with ffmpeg.

    Query can be YouTube link. 
    """
    ydl_opts = {
        "quiet": "True",
        "format": "bestaudio/best",
        "outtmpl": str(request_id) + ".%(ext)s",
        "prefer_ffmpeg": "True",
        "noplaylist": "True",
        "postprocessors": [
            {
                "key": "FFmpegExtractAudio",
                "preferredcodec": "wav",
                "preferredquality": "192",
            }
        ],
    }

    original_path = str(request_id) + ".wav"
    file_title = ""

    # check if query is youtube url
    if not query.lower().startswith((youtube_urls)):
        # search for youtube videos matching query
        query_string = urllib.parse.urlencode({"search_query": query})
        html_content = urllib.request.urlopen(
            "http://www.youtube.com/results?" + query_string
        )
        search_results = re.findall(
            r"href=\"\/watch\?v=(.{11})", html_content.read().decode()
        )
        info = False

        # find video that fits max duration
        logger.info("Get video information...")
        for url in search_results:
            # check for video duration
            try:
                info = youtube_dl.YoutubeDL(ydl_opts).extract_info(url, download=False)
            except Exception as e:
                logger.error(e)
                raise ValueError("Could not get information about video.")
            full_title = info["title"]
            if info["duration"] < MAX_DURATION and info["duration"] >= 5:
                # get first video that fits the limit duration
                logger.info("Got video: " + str(full_title))
                file_title = info["title"]
                break

        # if we ran out of urls, return error
        if not info:
            raise ValueError("Could not find a video.")

    # query was a youtube link
    else:
        logger.info("Query was a YouTube URL.")
        url = query
        info = youtube_dl.YoutubeDL(ydl_opts).extract_info(url, download=False)
        file_title = info["title"]
        # check if video fits limit duration
        if info["duration"] < 5 or info["duration"] > MAX_DURATION:
            raise ValueError("Video is too short. Need 5 seconds or more.")

    # download video and extract audio
    logger.info("Downloading video...")
    with youtube_dl.YoutubeDL(ydl_opts) as ydl:
        try:
            ydl.download([url])
        except Exception as e:
            logger.error(e)
            raise ValueError("Could not download " + str(full_title) + ".")

    return original_path, file_title


def gen_vapor(filePath, title):
    # Delete stuff if there is anything left over.
    os.system("rm -r download/")
    os.system("rm -r beats/")

    # Make the proper folders for intermediate steps
    os.system("mkdir download/")
    os.system("mkdir beats/")

    # Download the youtube query's first result. Might be wrong but YOLO
    # YTDownloader.download_wav_to_samp2(query)

    # For every song in download folder(just one for now)
    """
	for fs in os.listdir("download/"):
		# Slow down the song.
		VaporSong.vaporize_song(query,"download/"+fs)
		pass
	# When we are finished, delete the old folders.
	"""
    VaporSong.vaporize_song(filePath, title)

    os.system("rm -r download/")
    os.system("rm -r beats/")


"""	
## Makes this a command line tool: disable when we get the webserver going
sys.argv.pop(0)
query = ""
for s in sys.argv:
	query = query + s
"""

if music:
    name, title = download_file(query)
    gen_vapor(name, title)
elif picture:
    generateVHSStyle(query, "out.jpg",date=date,time=time)
elif video:
    VHS_Vid(query, outfile,date=date,time=time)