#!/bin/bash
IFS="
"
#Set your parameters here
url=friendica.example.net
db=friendica
folder=/var/www/friendica
folderavatar=/var/www/friendica/avatar
loop() {
	#Parse each file in folder
	ky=$(echo "${y}" | sed -e "s/${folderescaped}/https:\/\/${url}/g" -e "s/-[0-9]*\..*\$//g")
	f=$(sudo mariadb "${db}" -N -B -q -e "select photo from contact where photo like '${ky}%' limit 1")
	if [[ $? -eq 0 && -z ${f} && -f ${y} ]]; then
		ls -lh "${y}"
		sudo rm -rf "${y}"
		d=$((d + 1))
	fi
	#printf "\rPhotos: %s\tFolder %s\tEntry %s   " "$d" "$n" "$m"
	printf "\rFolder %s\tEntry %s  " "${n}" "${m}"
	return "${d}"
}

date
#Go to the Friendica installation
cd "${folderavatar}" || exit
let "indexlength=37+${#url}"
((indexlength = 49 + ${#url}))
sudo mariadb "${db}" -e "alter table contact add index if not exists photo_index (photo(${indexlength}))"
n=0
d=0
sudo find "${folderavatar}" -depth -mindepth 1 -maxdepth 1 -type d | while read -r x; do
	n=$((n + 1))
	#If the directory still exists
	if [[ -d "${x}" ]]; then
		folderescaped=${folder////\\/}
		kx=$(echo "${x}" | sed -e "s/${folderescaped}/https:\/\/${url}/g" -e "s/-[0-9]*\..*\$//g")
		if [[ -d ${x} ]]; then
			m=0
			while read -r y; do
				m=$((m + 1))
				loop "${x}" "${m}" "${n}" "${d}" &
				if [[ $(jobs -r -p | wc -l) -ge $(($(getconf _NPROCESSORS_ONLN) * 2)) ]]; then
					wait -n
				fi
				#done < <(sudo find "${x}" -type f -mtime -8)
			done < <(sudo find "${x}" -type f)
		fi
	fi
done
sudo mariadb "${db}" -e "alter table contact drop index photo_index"
date