Concatenate libro.fm files

libro-fm-concat.fish

# depends on eyeD3, ffmpeg, and jq (`brew install eye-d3 ffmpeg jq`)
# run when in the directory with unarchived tracks

ffmpeg \
  -f concat \
  -safe 0 \
  -i (find (pwd) -name '*.mp3' | sed -e "s/\(.*\)/file '\1'/" | sort | psub) \
  -c copy \
  (basename -s " - Track 001.mp3" (find . -iname '* - Track 001.mp3'))".mp3"

eyeD3 --write-images . (find . -iname '* - Track 001.mp3')

eyeD3 --add-image FRONT_COVER.jpg:FRONT_COVER \
  (basename -s " - Track 001.mp3" (find . -iname '* - Track 001.mp3'))".mp3"

eyeD3 \
  -a (eyeD3 --plugin json (find . -iname '* - Track 001.mp3') 2> /dev/null | jq -r ".artist") \
  -A (eyeD3 --plugin json (find . -iname '* - Track 001.mp3') 2> /dev/null | jq -r ".album") \
  -t (eyeD3 --plugin json (find . -iname '* - Track 001.mp3') 2> /dev/null | jq -r ".album") \
  (basename -s " - Track 001.mp3" (find . -iname '* - Track 001.mp3'))".mp3"