amx_download

# ====================================================
# AMX_Manager Copyright(C) 2018 Furkan Türkal
# This program comes with ABSOLUTELY NO WARRANTY; This is free software,
# and you are welcome to redistribute it under certain conditions; See
# file LICENSE, which is part of this source code package, for details.
# ====================================================

#!/bin/bash

# Ref: https://github.com/metinUr/dotfiles/blob/master/opt/bin/dsong
# Ref: https://stackoverflow.com/a/47097185

# Check for required applications
command -v notify-send  >/dev/null 2>&1 || { echo >&2 "AMX_Download: I require 'notify-send' but it's not installed! Aborting.";   exit 1; }
command -v wmctrl       >/dev/null 2>&1 || { echo >&2 "AMX_Download: I require 'wmctrl' but it's not installed! Aborting.";        exit 1; }
command -v xdotool      >/dev/null 2>&1 || { echo >&2 "AMX_Download: I require 'xdotool' but it's not installed! Aborting.";       exit 1; }
command -v xclip        >/dev/null 2>&1 || { echo >&2 "AMX_Download: I require 'xclip' but it's not installed! Aborting.";         exit 1; }
command -v jq           >/dev/null 2>&1 || { echo >&2 "AMX_Download: I require 'jq' but it's not installed! Aborting.";            exit 1; }
command -v youtube-dl   >/dev/null 2>&1 || { echo >&2 "AMX_Download: I require 'youtube-dl' but it's not installed! Aborting.";    exit 1; }

main() {

    case "$1" in
        youtube-music)
            id=$(wmctrl -l | grep -oP "(?<=)(0x\w+)(?=.*Chromium)")

            if [ -z "$id" ]
            then
                notify-send -a 'AMX_Download' -u low "Chromium couldn't have found!"
            else
                xdotool windowactivate $id
                xdotool key --window $id "CTRL+l"
                xdotool key --window $id "CTRL+c"

                URL=`xclip -o -selection clipboard`

                if  [[ $URL == https://www.youtube.com/watch?v=* ]] ;
                then
                    notify-send -a 'AMX_Download' -u low -t 1500 "YouTube: Metadata is checking before download..."

                    youtube-dl --simulate --skip-download --print-json -x $URL > metadata
                    isMusic=$(jq -e '.categories | contains(["Music"])' metadata)

                    if [[ "$isMusic" == "false" ]]; 
                    then
                        notify-send -a 'AMX_Download' -u low -t 2000 "YouTube: Category is not Music!"
                    else
                        notify-send -a 'AMX_Download' -u low -t 1500 "YouTube: Music download is being started..."

                        youtube-dl -o "~/Music/%(title)s.%(ext)s" --no-part --no-mtime --xattrs --add-metadata --print-json --no-warnings --format m4a --audio-format best --audio-quality=320k -x $URL > data

                        title=$(jq -r ".title" data)

                        notify-send -a 'AMX_Download' -u low -t 2000 "YouTube: Download finished!" "'$title'"
                    fi
                    
                else
                    notify-send -a 'AMX_Download' -u low "YouTube: Given link must be a YouTube video!"
                fi
            fi

            ;;
        *)
            printf "amx_download <command>\n"
            printf "             youtube-music\n"
       esac
}

main "$@"