#code_challenge="$("$srcdir/random_string.sh" 128 | sha1sum -a 256 | base64)"
#code_challenge="$("$srcdir/../bin/random_string.sh" 128 | sha1sum -a 256 | base64)"
#output="$(curl -sSL -X GET "https://accounts.spotify.com/authorize?client_id=$SPOTIFY_ID&redirect_uri=$redirect_uri&scope=$scope&response_type=code&code_challenge_method=S256&code_challenge=$code_challenge")"