#!/bin/sh /etc/rc.common
# Copyright (C) 2024 Tianling Shen <cnsztl@immortalwrt.org>

START=99
USE_PROCD=1

CONF="dufs"
PROG="/usr/bin/dufs"

is_enabled() {
	local enabled
	config_get_bool enabled "$1" "$2" "${3:-0}"
	if [ "$enabled" -eq "1" ]; then
		return 0
	else
		return 1
	fi
}

append_param() {
	procd_append_param command "$1" $2
}

append_param_arg() {
	local value
	config_get value "$1" "$2" $3
	[ -n "$value" ] && append_param "--${2//_/-}" "$value"
}

append_param_bool() {
	is_enabled "$1" "$2" && append_param "--${2//_/-}"
}

start_service() {
	config_load "$CONF"

	is_enabled "config" "enabled" || return 1

	procd_open_instance "$CONF"
	procd_set_param command "$PROG"

	append_param_arg "config" "bind"
	append_param_arg "config" "port" "5000"
	append_param_arg "config" "path_prefix"
	append_param_arg "config" "tls_cert"
	append_param_arg "config" "tls_key"
	append_param_bool "config" "enable_cors"

	local auth_roles
	config_get auth_roles "config" "auth"
	[ -z "$auth_roles" ] || config_list_foreach "config" "auth" "append_param '--auth'"

	append_param_arg "config" "hidden"
	append_param_bool "config" "allow_all"
	append_param_bool "config" "allow_upload"
	append_param_bool "config" "allow_delete"
	append_param_bool "config" "allow_search"
	append_param_bool "config" "allow_symlink"
	append_param_bool "config" "allow_archive"
	append_param_arg "config" "compress"

	append_param "--render-index"
	append_param "--render-try-index"

	local serve_path
	config_get serve_path "config" "serve_path" "/mnt"
	append_param "$serve_path"

	procd_set_param limits core="unlimited"
	procd_set_param limits nofile="1000000 1000000"
	procd_set_param respawn
	procd_set_param stderr 1

	local internet
	config_get_bool internet "config" "internet" "0"
	if [ "$internet" -eq "1" ]; then
		local listen_port
		config_get listen_port "config" "port" "5000"
		procd_open_data
		json_add_array firewall
			json_add_object ""
			json_add_string type rule
			json_add_string name "Allow-access-dufs-at-$listen_port"
			json_add_string src "*"
			json_add_string dest_port "$listen_port"
			json_add_string proto tcp
			json_add_string target ACCEPT
			json_close_object
		json_close_array
		procd_close_data
	fi

	procd_close_instance
}

service_started() {
	procd_set_config_changed firewall
}

service_stopped() {
	procd_set_config_changed firewall
}

service_triggers() {
	procd_add_reload_trigger "$CONF"
}