convert_all.sh

#!/bin/bash

## Use as ./convert_all.sh [DIRECTORY]
##
## i.e. ./convert_all.sh ~/Downloads

download_file() {
    bash AAXtoMP3 --aac -c -e:m4b -t "./out" "$1"
}

main() {
pwd="$(pwd)"
script="$1"
source="$2"

cd "$source"
source="$(pwd)"
cd "$pwd"
cd "$(dirname "$script")"

which gfind 2>&1 > /dev/null || brew install findutils
which mediainfo 2>&1 > /dev/null || brew install mediainfo


if ! [ -f .authcode ]
then
    echo "Place auth bytes into file .authcode"
    return
fi
[ -d out ] || mkdir out

find "$source" -type f | grep -E '\.aax$' | while read f
do
    download_file "$f" && \
    rm "$f"
done

find ./out -type f | grep -E '(Store|txt|jpg)$' | while read f
do
    rm "$f"
done
}
main "$0" "$1"