termux-url-opener for SpotifyDL - https://www.npmjs.com/package/spotify-dl

termux-url-opener-spotifydl

#!/data/data/com.termux/files/usr/bin/bash

# Get the URL
URL=$1

clear

# Check if its spotify URL or not.
# if it is then execute spotifydl command to download.

if [[ $URL == *"open.spotify.com"* ]]; then
    SONG_DIR="$HOME/storage/shared/songs" #for Termux only
    NODE_ENV=$(which node)
    SPOTIFYDL=$(which spotifydl)

    echo "Spotifydl (NPM) Created by Swapnil Soni ©"
    # check if directory exist or not
    if [[ ! -d $SONG_DIR ]]; then
        # directory doesn't exist create it for use.
        mkdir $SONG_DIR
    fi
    # Download the song to song directory.
    $NODE_ENV $SPOTIFYDL $URL -o $SONG_DIR

    read -n 1 -s -p "Press any key to exit..."
fi

nice

Can't download it by sharing form app

yes @Constantine640
because spotify is now attaching extra text while sharing so its an issue now better run command from now on