#!/bin/sh
#
# RPCD backend for Glances LuCI interface
# Copyright (C) 2025-2026 CyberMind.fr (SecuBox)
#

. /lib/functions.sh

LXC_NAME="glances"

# Get service status
get_status() {
	local running=0
	local pid=""
	local lxc_state=""
	local web_url=""

	# Check LXC container status
	if command -v lxc-info >/dev/null 2>&1; then
		lxc_state=$(lxc-info -n "$LXC_NAME" -s 2>/dev/null | grep -oE 'RUNNING|STOPPED' || echo "UNKNOWN")
		if [ "$lxc_state" = "RUNNING" ]; then
			running=1
			pid=$(lxc-info -n "$LXC_NAME" -p 2>/dev/null | grep -oE '[0-9]+' || echo "0")
		fi
	fi

	local enabled=$(uci -q get glances.main.enabled || echo "0")
	local web_port=$(uci -q get glances.main.web_port || echo "61208")
	local router_ip=$(uci -q get network.lan.ipaddr || echo "192.168.1.1")

	[ "$running" = "1" ] && web_url="http://${router_ip}:${web_port}"

	cat <<EOF
{
	"running": $([ "$running" = "1" ] && echo "true" || echo "false"),
	"enabled": $([ "$enabled" = "1" ] && echo "true" || echo "false"),
	"pid": ${pid:-0},
	"lxc_state": "$lxc_state",
	"web_port": $web_port,
	"web_url": "$web_url"
}
EOF
}

# Get main configuration
get_config() {
	local enabled=$(uci -q get glances.main.enabled || echo "0")
	local web_port=$(uci -q get glances.main.web_port || echo "61208")
	local api_port=$(uci -q get glances.main.api_port || echo "61209")
	local web_host=$(uci -q get glances.main.web_host || echo "0.0.0.0")
	local refresh_rate=$(uci -q get glances.main.refresh_rate || echo "3")
	local memory_limit=$(uci -q get glances.main.memory_limit || echo "128M")

	cat <<EOF
{
	"enabled": $([ "$enabled" = "1" ] && echo "true" || echo "false"),
	"web_port": $web_port,
	"api_port": $api_port,
	"web_host": "$web_host",
	"refresh_rate": $refresh_rate,
	"memory_limit": "$memory_limit"
}
EOF
}

# Get monitoring configuration
get_monitoring_config() {
	local monitor_docker=$(uci -q get glances.monitoring.monitor_docker || echo "1")
	local monitor_network=$(uci -q get glances.monitoring.monitor_network || echo "1")
	local monitor_diskio=$(uci -q get glances.monitoring.monitor_diskio || echo "1")
	local monitor_sensors=$(uci -q get glances.monitoring.monitor_sensors || echo "1")
	local monitor_processes=$(uci -q get glances.monitoring.monitor_processes || echo "1")

	cat <<EOF
{
	"monitor_docker": $([ "$monitor_docker" = "1" ] && echo "true" || echo "false"),
	"monitor_network": $([ "$monitor_network" = "1" ] && echo "true" || echo "false"),
	"monitor_diskio": $([ "$monitor_diskio" = "1" ] && echo "true" || echo "false"),
	"monitor_sensors": $([ "$monitor_sensors" = "1" ] && echo "true" || echo "false"),
	"monitor_processes": $([ "$monitor_processes" = "1" ] && echo "true" || echo "false")
}
EOF
}

# Get alerts configuration
get_alerts_config() {
	local cpu_warning=$(uci -q get glances.alerts.cpu_warning || echo "70")
	local cpu_critical=$(uci -q get glances.alerts.cpu_critical || echo "90")
	local mem_warning=$(uci -q get glances.alerts.mem_warning || echo "70")
	local mem_critical=$(uci -q get glances.alerts.mem_critical || echo "90")
	local disk_warning=$(uci -q get glances.alerts.disk_warning || echo "70")
	local disk_critical=$(uci -q get glances.alerts.disk_critical || echo "90")

	cat <<EOF
{
	"cpu_warning": $cpu_warning,
	"cpu_critical": $cpu_critical,
	"mem_warning": $mem_warning,
	"mem_critical": $mem_critical,
	"disk_warning": $disk_warning,
	"disk_critical": $disk_critical
}
EOF
}

# Get web URL for iframe
get_web_url() {
	local router_ip=$(uci -q get network.lan.ipaddr || echo "192.168.1.1")
	local web_port=$(uci -q get glances.main.web_port || echo "61208")

	cat <<EOF
{
	"web_url": "http://$router_ip:$web_port"
}
EOF
}

# Service control
service_start() {
	/etc/init.d/glances start >/dev/null 2>&1
	sleep 2
	get_status
}

service_stop() {
	/etc/init.d/glances stop >/dev/null 2>&1
	sleep 1
	get_status
}

service_restart() {
	/etc/init.d/glances restart >/dev/null 2>&1
	sleep 2
	get_status
}

# Set configuration
set_config() {
	local key="$1"
	local value="$2"
	local section="main"

	case "$key" in
		monitor_*)
			section="monitoring"
			;;
		cpu_*|mem_*|disk_*)
			section="alerts"
			;;
	esac

	# Handle boolean conversion
	case "$value" in
		true) value="1" ;;
		false) value="0" ;;
	esac

	uci set "glances.$section.$key=$value"
	uci commit glances
	echo '{"success":true}'
}

# RPCD list method
case "$1" in
	list)
		cat <<EOF
{
	"get_status": {},
	"get_config": {},
	"get_monitoring_config": {},
	"get_alerts_config": {},
	"get_web_url": {},
	"service_start": {},
	"service_stop": {},
	"service_restart": {},
	"set_config": {"key": "string", "value": "string"}
}
EOF
		;;
	call)
		case "$2" in
			get_status)
				get_status
				;;
			get_config)
				get_config
				;;
			get_monitoring_config)
				get_monitoring_config
				;;
			get_alerts_config)
				get_alerts_config
				;;
			get_web_url)
				get_web_url
				;;
			service_start)
				service_start
				;;
			service_stop)
				service_stop
				;;
			service_restart)
				service_restart
				;;
			set_config)
				read -r input
				key=$(echo "$input" | jsonfilter -e '@.key' 2>/dev/null)
				value=$(echo "$input" | jsonfilter -e '@.value' 2>/dev/null)
				set_config "$key" "$value"
				;;
			*)
				echo '{"error":"Unknown method"}'
				;;
		esac
		;;
	*)
		echo '{"error":"Unknown command"}'
		;;
esac