#!/bin/dash

asroot env \
	SIGNAL_DIR="${HOME}/.var/opt/signal" \
	SIGNAL_DEV="$(losetup | sed 's/\s\+/ /g' | cut -d ' ' -f 1,6 | \
	              sed -n 's#\(/[^ ]*\) '"$(realpath -- "${HOME}/.var/opt/signal/SignalCrypt.img")"'$#\1#p' | sed 1q)" \
	sh -c '
		if mountpoint -q -- "${SIGNAL_DIR}/SignalCrypt.d"; then
			umount -- "${SIGNAL_DIR}/SignalCrypt.d"
		fi
		if test -e /dev/mapper/SignalCrypt; then
			cryptsetup close SignalCrypt
		fi
		if test -n "${SIGNAL_DEV}"; then
			losetup -d "${SIGNAL_DEV}"
		fi
	'