#!/bin/bash

set -e

shopt -s globstar

blue=$(tput setaf 4)
green=$(tput setaf 2)
reset=$(tput sgr0)
bold=$(tput bold)

rootdir="${HOME}/Musique/"

cd "$rootdir"

for dir in **/ .
do
	echo "$bold$dir$reset"
	dstdir="${HOME}/Musique.opus/${dir}"
	
	mkdir -p "${dstdir}"
	
	cd "${rootdir}/${dir}"
	
	for file in *
	do
		if [[ -d "${file}" ]]
		then
			continue
		fi

		if [[ "${file}" =~ .flac$ ]] || [[ "${dir}" == "Vidéos/" && "$(file --mime-type -b -e ascii -e compress -e tar -e cdf "$file")" =~ video/ ]]
		then
			dstfile="$(basename -s .flac "$file").opus"

			if [[ -f "${dstdir}${dstfile}" ]]
			then
				echo "[${blue}SKIP${reset}] $file"
				continue
			fi

			declare -a running

			running=($(jobs -p))
			if [[ "${#running[@]}" -ge 12 ]]
			then
				wait -n
			fi

			(
				echo "       $file"
				ffmpeg -n -loglevel error -i "file:$file" -c:a libopus -b:a 256K "file:${dstdir}${dstfile}"
				echo "[${green} OK ${reset}] $file"
			) &
		else
			echo "[${green}COPY${reset}] $file"
			cp -n --reflink=auto "${file}" "${dstdir}/"
		fi
	done
	wait
done
wait