#!/bin/sh

DAEMON=/usr/bin/tera-accessd
PIDFILE=/run/tera-accessd.pid
ENVFILE=/etc/tera/tera-accessd.env
SOCKET=/run/tera-accessd/control.sock

load_environment() {
	if [ -r "$ENVFILE" ]; then
		set -a
		. "$ENVFILE"
		set +a
	fi
	SOCKET=${TERA_ACCESSD_SOCKET:-$SOCKET}
}

is_running() {
	[ -r "$PIDFILE" ] || return 1
	pid="$(cat "$PIDFILE" 2>/dev/null)"
	[ -n "$pid" ] && kill -0 "$pid" 2>/dev/null
}

start_service() {
	if is_running; then
		echo "tera-accessd is already running"
		return 0
	fi
	rm -f "$PIDFILE"
	[ -x "$DAEMON" ] || { echo "missing $DAEMON" >&2; return 1; }
	[ -r /usr/share/tera-web/index.html ] || { echo "missing tera-web assets" >&2; return 1; }
	load_environment
	mkdir -p /run/tera-accessd /var/lib/tera-api/tls/library
	chown root:tera /run/tera-accessd
	chmod 0750 /run/tera-accessd
	chown -R tera:tera /var/lib/tera-api/tls
	chmod 0700 /var/lib/tera-api/tls /var/lib/tera-api/tls/library
	start-stop-daemon -S -q -b -m -p "$PIDFILE" -x "$DAEMON"
	attempts=0
	while [ "$attempts" -lt 50 ]; do
		if [ -S "$SOCKET" ]; then
			chown root:tera "$SOCKET" || return 1
			chmod 0660 "$SOCKET" || return 1
			return 0
		fi
		is_running || return 1
		attempts=$((attempts + 1))
		sleep 0.1
	done
	return 1
}

stop_service() {
	load_environment
	if is_running; then
		start-stop-daemon -K -q -p "$PIDFILE" -x "$DAEMON" || return 1
	fi
	rm -f "$PIDFILE" "$SOCKET"
}

case "$1" in
	start) start_service ;;
	stop) stop_service ;;
	restart) stop_service && start_service ;;
	status) is_running ;;
	*) echo "Usage: $0 {start|stop|restart|status}" >&2; exit 1 ;;
esac