#!/bin/bash

#                       __                __
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#   / __ `/ / / / __ \/ / __ \/ __ `/ __  / _ \/ ___/
#  / /_/ / /_/ / / / / / /_/ / /_/ / /_/ /  __/ /
#  \__, /\__,_/_/ /_/_/\____/\__,_/\__,_/\___/_/
# /____/
# ---------------------------------------------------
# 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='Iqco1TYoxF0'

# 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 00:06:48 -i "${SRC_FILE}" -vn -acodec copy "1. I. 𝔄𝔤𝔞𝔦𝔫𝔰𝔱 𝔑𝔞𝔱𝔲𝔯𝔢.${FILE_EXT}"
ffmpeg -ss 00:06:48 -to 00:14:38 -i "${SRC_FILE}" -vn -acodec copy "2. II. 𝔄𝔰𝔥𝔢𝔰.${FILE_EXT}"
ffmpeg -ss 00:14:38 -to 00:20:18 -i "${SRC_FILE}" -vn -acodec copy "3. III. 𝔗𝔥𝔢 𝔘𝔫𝔟𝔢𝔞𝔯𝔞𝔟𝔩𝔢 𝔙𝔦𝔰𝔦𝔬𝔫.${FILE_EXT}"
ffmpeg -ss 00:20:18 -to 00:23:51 -i "${SRC_FILE}" -vn -acodec copy "4. IV. 𝔉𝔯𝔲𝔰𝔱𝔯𝔞𝔱𝔦𝔬𝔫𝔰.${FILE_EXT}"
ffmpeg -ss 00:23:51 -to 00:30:47 -i "${SRC_FILE}" -vn -acodec copy "5. V. 𝔒𝔫𝔢 𝔏𝔞𝔰𝔱 𝔖𝔱𝔢𝔭.${FILE_EXT}"
ffmpeg -ss 00:30:47 -to 00:38:57 -i "${SRC_FILE}" -vn -acodec copy "6. VI. 𝔖𝔭𝔢𝔠𝔱𝔯𝔢.${FILE_EXT}"
ffmpeg -ss 00:38:57 -to 00:46:34 -i "${SRC_FILE}" -vn -acodec copy "7. VII. 𝔚𝔬𝔲𝔫𝔡𝔰 𝔚𝔥𝔦𝔠𝔥 𝔑𝔢𝔳𝔢𝔯 ℌ𝔢𝔞𝔩.${FILE_EXT}"
ffmpeg -ss 00:46:34 -to 00:51:31 -i "${SRC_FILE}" -vn -acodec copy "8. VIII. 𝔘𝔫𝔯𝔢𝔞𝔩.${FILE_EXT}"
ffmpeg -ss 00:51:31 -to 01:09:54 -i "${SRC_FILE}" -vn -acodec copy "9. IX. 𝔑𝔢𝔳𝔢𝔯 ℭ𝔬𝔪𝔢𝔰 𝔖𝔦𝔩𝔢𝔫𝔠𝔢.${FILE_EXT}"