#!/bin/sh /etc/rc.common

START=90

USE_PROCD=1

PROG=/usr/sbin/tailscaled
CONFIG_PATH=/var/lib/tailscale

service_triggers() {
	procd_add_reload_trigger "tailscale"
	procd_add_interface_trigger "interface.*.up" wan /etc/init.d/tailscale reload
}

section_enabled() {
	config_get_bool enabled "$1" 'enabled' 0
	[ $enabled -gt 0 ]
}

start_instance() {
	local cfg="$1"
	local port std_err std_out config_path
	local ARGS=""

	if ! section_enabled "$cfg"; then
		echo "disabled in config"
		return 1
	fi

	[ -d /etc/tailscale ] || mkdir -p /etc/tailscale
	config_path=/etc/tailscale

	config_get_bool std_out $cfg log_stdout 1
	config_get_bool std_err $cfg log_stderr 1
	config_get port $cfg port 41641
	config_get state_file $cfg state_file /etc/tailscale/tailscaled.state
	config_get fw_mode $cfg fw_mode nftables
	
	/usr/sbin/tailscaled --cleanup

	# Remove existing link or folder
	rm -rf $CONFIG_PATH

	# Create link from CONFIG_PATH to config_path
	if [ -n "$config_path" -a "$config_path" != $CONFIG_PATH ]; then
		if [ ! -d "$config_path" ]; then
			echo "Tailscale config_path does not exist: $config_path"
			return
		fi
		ln -s $config_path $CONFIG_PATH
	fi

	[ -n "$port" ] && ARGS="$ARGS --port $port"	
	[ -n "$state_file" ] && ARGS="$ARGS --state $state_file"

	procd_open_instance
	procd_set_param command $PROG $ARGS

	procd_set_param env TS_DEBUG_FIREWALL_MODE="$fw_mode"
 	
	procd_set_param respawn
	procd_set_param stdout "$std_out"
	procd_set_param stderr "$std_err"
	procd_close_instance
}

start_service() {
	config_load 'tailscale'
	config_foreach start_instance 'settings'
}

stop_instance() {
	local cfg="$1"
	/usr/sbin/tailscaled --cleanup

	# Remove existing link or folder
	rm -rf $CONFIG_PATH/*.log*
	rm -rf $CONFIG_PATH
}

stop_service() {
	config_load 'tailscale'
	config_foreach stop_instance 'settings'
}

reload_service() {
	stop
	start
}