#!/bin/bash

#                       __                __
#    ____ ___  ______  / /___  ____ _____/ /__  _____
#   / __ `/ / / / __ \/ / __ \/ __ `/ __  / _ \/ ___/
#  / /_/ / /_/ / / / / / /_/ / /_/ / /_/ /  __/ /
#  \__, /\__,_/_/ /_/_/\____/\__,_/\__,_/\___/_/
# /____/
# ---------------------------------------------------
# Author :: Miris /// GitHub :: MirisWisdom/Albumin
# ---------------------------------------------------

# This simple Bash script lets you download the video
# using yt-dlp, and then takes care of extracting its
# audio into a file for each song w/ ffmpeg!

# It does not re-encode or tag any of the audio files
# due to raw preservation being its purpose.

# You should run it line by line rather than blindly!
# Feel free to tweak & suggest improvements!

# ---------------------------------------------------

# We'll be using the ID for both file and directory.
VIDEO_ID='MP9evk0f7Qg'

# Create and enter the new directory.
mkdir -p "${VIDEO_ID}" && cd "${VIDEO_ID}"

# Download the audio file using yt-dlp.
yt-dlp -x -f bestaudio "${VIDEO_ID}" -o "${VIDEO_ID}.%%(ext)s"

# Figure out the downloaded file name and extension.
SRC_FILE=$(ls "${VIDEO_ID}".*) # ls command should only output the downloaded file name!
FILE_EXT=${SRC_FILE:12}        # file id + dot = 12 characters; extension length varies!

ffmpeg -ss 00:00:00 -to 00:02:29 -i "${SRC_FILE}" -vn -acodec copy "01. 1- Hungry Face.${FILE_EXT}"
ffmpeg -ss 00:02:29 -to 00:04:53 -i "${SRC_FILE}" -vn -acodec copy "02. 2- Jaguar.${FILE_EXT}"
ffmpeg -ss 00:04:53 -to 00:09:00 -i "${SRC_FILE}" -vn -acodec copy "03. 3- The Huts.${FILE_EXT}"
ffmpeg -ss 00:09:00 -to 00:12:35 -i "${SRC_FILE}" -vn -acodec copy "04. 4- Kill Jester.${FILE_EXT}"
ffmpeg -ss 00:12:35 -to 00:15:25 -i "${SRC_FILE}" -vn -acodec copy "05. 5- This Messiah Needs Watching.${FILE_EXT}"
ffmpeg -ss 00:15:25 -to 00:17:09 -i "${SRC_FILE}" -vn -acodec copy "06. 6- Whisky Time.${FILE_EXT}"
ffmpeg -ss 00:17:09 -to 00:21:06 -i "${SRC_FILE}" -vn -acodec copy "07. 7- Special N.${FILE_EXT}"
ffmpeg -ss 00:21:06 -to 00:24:52 -i "${SRC_FILE}" -vn -acodec copy "08. 8- Relative Hysteria.${FILE_EXT}"
ffmpeg -ss 00:24:52 -to 00:28:43 -i "${SRC_FILE}" -vn -acodec copy "09. 9- Fridge Magic.${FILE_EXT}"
ffmpeg -ss 00:28:43 -to 00:32:50 -i "${SRC_FILE}" -vn -acodec copy "10. 10- Portugal.${FILE_EXT}"
ffmpeg -ss 00:32:50 -to 00:36:24 -i "${SRC_FILE}" -vn -acodec copy "11. 11- Eagle Tax.${FILE_EXT}"
ffmpeg -ss 00:36:24 -to 00:39:14 -i "${SRC_FILE}" -vn -acodec copy "12. 12- Modern.${FILE_EXT}"
ffmpeg -ss 00:39:14 -to 00:45:13 -i "${SRC_FILE}" -vn -acodec copy "13. 13- What Are They Doing In Heaven Today?.${FILE_EXT}"
ffmpeg -ss 00:45:13 -to 00:49:50 -i "${SRC_FILE}" -vn -acodec copy "14. 14- Wizard Motor.${FILE_EXT}"