#!/bin/bash

echo "Note: you need installed id3v2 on your computer!"
echo "Warning! Track's filename must be match with track title in the tracklist file!"
echo

read -e -p "Enter the path to album: " album_path
read -e -p "Enter the path to file with tracklist: " tracklist_path
echo

read -p "Artist: " artist
read -p "Album: " album
echo "Genre (15 - Rap, 9 - Metal)"
read -p "-> " genre
read -p "Year: " year

readarray -t tracklist < $tracklist_path

tracks=${#tracklist[@]}

for (( i = 0; i < $tracks; i++ )); do
  track_num=$(($i + 1))
  track_file="$album_path/$track_num. ${tracklist[$i]}.mp3"
  id3v2 -D "$track_file"
  id3v2 -a "$artist" "$track_file"
  id3v2 -A "$album" "$track_file"
  id3v2 -t "${tracklist[$i]}" "$track_file"
  id3v2 -g "$genre" "$track_file"
  id3v2 -y "$year" "$track_file"
  id3v2 -T "$track_num" "$track_file"
done