#!/bin/sh

. /lib/functions.sh
. /usr/share/libubox/jshn.sh

RPC_SCRIPTS=/usr/libexec/apinger/rpc

[ -d $RPC_SCRIPTS ] && include $RPC_SCRIPTS

__function__() {
    type "$1" > /dev/null 2>&1
}

foreach_extra() {
	local file obj

	[ ! -d $RPC_SCRIPTS ] && return
	
	for file in $RPC_SCRIPTS/*; do
		obj="${file##*/}"
		$1 "${obj%%.*}"
	done
}

apinger_status() {
	interface_list() {
		append iface_list $1
	}
	config_load apinger
	config_foreach interface_list interface

	json_init
	json_add_array targets

	for iface in $iface_list; do
		local status_file="/var/run/apinger-$iface.status"

		if [ -f "$status_file" ]; then
			_IFS="$IFS"
			IFS="|"
			while read -r address srcip target sent received timestamp latency loss alarm; do
				json_add_object targets
				json_add_string interface "$iface"
				json_add_string target "$target"
				json_add_string address "$address"
				json_add_string srcip "$srcip"
				json_add_int sent "$sent"
				json_add_int received "$received"
				json_add_string latency "$latency"
				json_add_string loss "$loss"
				json_add_string alarm "$alarm"
				json_add_int timestamp "$timestamp"
				json_close_object
			done < "$status_file"
			IFS="$_IFS"
		fi
	done

	json_close_array
	json_dump
}

call_extra() {
	if __function__ "$1"; then
		$1
	else
		json_init
		json_add_string error "invalid call $1"
		json_dump
	fi
}

call_method() {
	case "$1" in
		status)
			apinger_status
			;;
		*)
			call_extra $1
			;;
	esac
}

list_extra() {
	if __function__ "${1}_help"; then
		${1}_help
	else
		json_add_object "$1"
		json_close_object
	fi
}

list_methods() {
	local file

	json_init

	json_add_object status
	json_close_object

	foreach_extra list_extra ${1}

	json_dump
} 

main () {
	case "$1" in
		list)
			list_methods
			;;
		call)
			call_method $2
			;;
	esac
}

main "$@"