#!/bin/sh

. /usr/share/libubox/jshn.sh
json_init

SCRIPT_STATUS_FILE=$(uci get nodewatcher.@script[0].status_text_file)
SCRIPT_VERSION=$(cat /etc/nodewatcher_version)
SCRIPT_DATA_FILE=$(uci get nodewatcher.@script[0].data_file).json

debug() {
	(>&2 echo "nodewatcher: $1")
}

debug "Collecting basic system status data"

json_add_object "system"

json_add_string "status" "online"
hostname="$(cat /proc/sys/kernel/hostname)"
mac=$(awk '{ mac=toupper($1); gsub(":", "", mac); print mac }' /sys/class/net/br-client/address 2>/dev/null)

[ "$hostname" = "OpenWrt" ] && hostname="$mac"
[ "$hostname" = "FFF" ] && hostname="$mac"

json_add_string "hostname" "$hostname"

description="$(uci -q get fff.system.description)"
[ -n "$description" ] && json_add_string "description" "$description"

latitude="$(uci -q get fff.system.latitude)"
longitude="$(uci -q get fff.system.longitude)"
if [ -n "$longitude" -a -n "$latitude" ]; then
	json_add_object "geo"
	json_add_string "lat" "$latitude"
	json_add_string "lng" "$longitude"
	json_close_object #geo
fi

position_comment="$(uci -q get fff.system.position_comment)"
[ -n "$position_comment" ] && json_add_string "position_comment" "$position_comment"

contact="$(uci -q get fff.system.contact)"
[ -n "$contact" ] && json_add_string "contact" "$contact"

json_add_string "uptime" $(awk '{ printf $1 }' /proc/uptime)
json_add_string "idletime" $(awk '{ printf $2 }' /proc/uptime)

# Add Memory
json_add_object "memory"
json_add_string "total" $(awk '/^MemTotal/ { printf $2 }' /proc/meminfo)
json_add_string "available" $(awk '/^MemAvail/ { printf $2 }' /proc/meminfo)
json_add_string "caching" $(awk '/^Cached/ { printf $2 }' /proc/meminfo)
json_add_string "buffering" $(awk '/^Buffers/ { printf $2 }' /proc/meminfo)
json_add_string "free" $(awk '/^MemFree/ { printf $2 }' /proc/meminfo)
json_close_object #memory

# Add CPU
json_add_array cpu
IN=$(awk -F': ' ' /model/ { printf $2";" }' /proc/cpuinfo)
IFS=';'; set $IN; IFS=$' \t\n'
for a; do json_add_string "" "$a"; done
json_close_object #cpu

# Add Chipset
IN=$(awk -F': ' ' /system type/ { printf $2";" }' /proc/cpuinfo)
IFS=';'; set $IN; IFS=$' \t\n'
for a; do json_add_string "chipset" "$a"; done

IN=$(awk -F': ' ' /platform/ { printf $2";" }' /proc/cpuinfo)
IFS=';'; set $IN; IFS=$' \t\n'
for a; do json_add_string "chipset" "$a"; done

model=$(cat /var/sysinfo/model)
[ -n "$model" ] && json_add_string "model" "$model"
local_time=$(date +%s)
[ -n "$local_time" ] && json_add_string "local_time" "$local_time"
loadavg=$(awk '{ printf $3 }' /proc/loadavg)
[ -n "$loadavg" ] && json_add_string "loadavg" "$loadavg"
processes=$(awk '{ printf $4 }' /proc/loadavg)
[ -n "$processes" ] && json_add_string "processes" "$processes"

debug "Collecting version information"
json_close_object #system

if [ -e /sys/module/batman_adv/version ]; then
	batman_advanced_version=$(cat /sys/module/batman_adv/version)
	json_add_object "batman_advanced"
	json_add_string "version" "$batman_advanced_version"
	json_close_object #batman_advanced
fi

json_select system
json_add_string "kernel_version" "$(uname -r)"
json_add_string "nodewatcher_version" "$SCRIPT_VERSION"

if [ -x /usr/bin/fastd ]; then
	json_add_string "fastd_version" "$(/usr/bin/fastd -v | awk '{ print $2 }')"
fi

json_close_object #system

if [ -x /usr/sbin/babeld ]; then
	json_add_object "babel"
	json_add_string "version" "$(/usr/sbin/babeld -V 2>&1)"
	json_close_object #babel
fi

json_select system
json_add_object "dist"
. /etc/openwrt_release
json_add_string "name" "$DISTRIB_ID"
json_add_string "version" "$DISTRIB_RELEASE"
json_close_object #dist

json_add_object "firmware"
. /etc/firmware_release
json_add_string "version" "$FIRMWARE_VERSION"
json_add_string "revision" "$BUILD_DATE"
json_add_object "openwrt"
json_add_string "core_revision" "$OPENWRT_CORE_REVISION"
json_add_string "feeds_packages_revision" "$OPENWRT_FEEDS_PACKAGES_REVISION"
json_close_object #openwrt
json_close_object #firmware

debug "Collecting hood information and additional status data"

json_add_object "hood"
hoodname="$(uci -q get "system.@system[0].hood")"
[ -n "$hoodname" ] && json_add_string "name" "$hoodname"
hoodid="$(uci -q get "system.@system[0].hoodid")"
[ -n "$hoodid" ] && json_add_string "id" "$hoodid"
json_close_object #hood

if [ -s "$SCRIPT_STATUS_FILE" ]; then
	status_text="$(cat "$SCRIPT_STATUS_FILE")"
	json_add_string "status_text" "$status_text"
fi

# Checks if fastd is running
vpn_active=0
pidof fastd >/dev/null && vpn_active=1
json_add_string "vpn_active" "$vpn_active"

json_dump > $SCRIPT_DATA_FILE
#exit 0