download_mp3_from_file_youtube

#!/bin/bash

#
# CREATOR
# This code in writen by nanorocks
#

#
# POINT
# Helping script to download mp3 music from file filled with links from youtube
#

#
# USAGE
# For OS's who compile SHELL SCRIPTS (GNU/LINUX)
#

#GLOBAL VARIABLES
data=$1
flag=0

# just logo on start up
function logo()
{
    echo "---------------------------------"
    echo "| YOUTUBE SONGS LIST DOWNLOADER |"
    echo "---------------------------------"
}

# requirements on start up
function checkRequirements()
{
  echo -e "REQUIREMENTS: (youtube-dl,ffmpeg)"
  if ! type "youtube-dl" > /dev/null; then
    echo "You must install youtube-dl on your system."
    exit
  elif ! type "ffmpeg" > /dev/null; then
    echo "You must install ffmpeg on your system."
    exit
  else
    echo "Your requirements are installed."
  fi

}


# validation input goes here
function validationInput()
{
    if ! [ -f $data ]
    then
        echo "File $data not exist."
        exit
    elif [[ -z "$data" ]]
    then
        echo -e "Set file as parameter after this script.\n E.G: bash <scriptname> <file>"
        exit
    fi

    if ! [ -d songs ]
    then
        mkdir songs
    fi

}

# main fuction for music
function loopingMusic()
{

    for i in `cat $data`
    do
        echo "Downloading new song from youtube!!!"
        echo `youtube-dl --extract-audio --audio-format mp3 $i`
        flag=$((flag+1))
    done

    ls | grep '.mp3' | while read j
    do
        # echo "$j"
        mv "$j" songs
    done

    echo "You downloaded $flag songs from youtube."

}

logo .
checkRequirements .
validationInput .
loopingMusic .