#!/usr/bin/python3
import argparse
import random
import os
import pathlib
import moviepy.editor
from moviepy.video.io.ffmpeg_tools import ffmpeg_extract_subclip
from pymediainfo import MediaInfo
import threading


class Args:
    parser = ArgumentParser = argparse.ArgumentParser(
        description='Extracting mediainfo, sample and screens from random timecodes from video')
    parser.add_argument('-s', action='store_true', dest='screens', help="create screenshots")
    parser.add_argument('-c', action='store_true', dest='sample', help="extract sample")
    parser.add_argument('-m', action='store_true', dest='mediainfo', help='create mediainfo')
    parser.add_argument('-n', action='store', dest="count", default=10,
                        help="number of screenshots, default 10", type=int)
    parser.add_argument('-i', action='store', dest='input', help="input file", required=True)
    args = parser.parse_args()
    args.input = "D:/ReLive/Escape from Tarkov/2021.02.18-22.15.mp4"
    args.screens = True


def sample(fold, exname, max_time):
    """
    Create sample with duration 2m if file longer then 6m
    """

    print("sample")
    sam = fold + "/sample/" + exname
    if max_time <= 360:
        ffmpeg_extract_subclip(Args.args.input, max_time / 3, max_time * 2 / 3, targetname=sam)
    else:
        ffmpeg_extract_subclip(Args.args.input, max_time / 2 - 60, max_time / 2 + 60, targetname=sam)


def info(mfile, media_info):
    print("Creating MediaInfo")
    f = open(mfile, "w")
    f.write(str(media_info))
    f.close()
    print("Created MediaInfo")


def screens(fold, mintimescr, maxtimescr, screen_create, num_screen):
    time = random.randint(mintimescr, maxtimescr)
    imgname = fold + "/" + str(time) + ".png"
    print(f"{num_screen + 1} time {time}s")

    screen_create.save_frame(imgname, t=time)
    screen_create.reader.close()
    screen_create.audio.reader.close_proc()


class Head:
    """
    Creates mediainfo, screenshots and sample from file
    """

    def body():
        bname: str

        bname = moviepy.editor.os.path.basename(Args.args.input)
        fname = moviepy.editor.os.path.splitext(bname)[0]
        exname = moviepy.editor.os.path.splitext(bname)[1]
        print("Filename is %s" % bname)
        fold = str(pathlib.Path.home()) + "/samples/" + fname

        if os.path.isdir(fold):
            print("Directory %s is exist" % fold)
        else:
            try:
                moviepy.editor.os.makedirs(fold)
            except OSError:
                print("Creation of the directory %s failed" % fold)
            else:
                print("Successfully created the directory %s " % fold)
        print("\nFiles will be located at %s" % fold)

        media_info = MediaInfo.parse(Args.args.input, output="", parse_speed=2)
        mi = MediaInfo.parse(Args.args.input)
        mfile = fold + "/mediainfo.txt"
        duration = mi.tracks[0]
        max_time = duration.duration / 1000

        if Args.args.sample:
            sample(fold, exname, max_time)
        if Args.args.screens:
            print("Creating %s screenshots" % Args.args.count)
            max_time = round(max_time)
            print("Rounded duration %ss" % max_time)
            screen_create = moviepy.editor.VideoFileClip(Args.args.input)
            mintimescr = round(max_time * 0.05)
            maxtimescr = round(max_time * 0.95)
            for i in range(Args.args.count):
                num_screen = i
                thread = threading.Thread(name="screenshot",
                                          target=screens(fold, mintimescr, maxtimescr, screen_create, num_screen))
                thread.start()
        if Args.args.mediainfo:
            info(mfile, media_info)


if __name__ == '__main__':
    Head.body()