viz-yt

#!/bin/bash

set -e

exit_err() {
    echo ${@} >&2
    exit 1
}

echo_cmd() {
    echo [+] ${@}
    eval "${@}"
}

if [ -z ${1} ]; then
    exit_err "you must supply a url (first arg)"
fi;

TMP_DIR=$(mktemp -d)

cleanup() {
    echo_cmd rm -rf ${TMP_DIR};
}

if ! echo_cmd youtube-dl --audio-format wav -x -o ${TMP_DIR}/song.mp4 ${1}; then
    cleanup
    exit_err "failed to download!"
fi;

trap 'cleanup' INT QUIT KILL;
echo_cmd ./viz ${TMP_DIR}/song.wav && cleanup