#!/bin/sh
# SPDX-License-Identifier: Apache-2.0
# Client Guardian - Network Access Control RPCD Backend
# Copyright (C) 2024 CyberMind.fr - Gandalf

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

CONFIG_FILE="/etc/config/client-guardian"
LOG_FILE="/var/log/client-guardian.log"
CLIENTS_DB="/tmp/client-guardian-clients.json"
ALERTS_QUEUE="/tmp/client-guardian-alerts.json"

# Logging function with debug support
log_event() {
	local level="$1"
	local message="$2"
	local timestamp=$(date '+%Y-%m-%d %H:%M:%S')
	echo "[$timestamp] [$level] $message" >> "$LOG_FILE"

	# Also log to syslog if debug enabled
	local debug_enabled=$(uci -q get client-guardian.config.debug_enabled)
	if [ "$debug_enabled" = "1" ]; then
		logger -t client-guardian -p "daemon.$level" "$message"
	fi
}

# Debug logging function
log_debug() {
	local message="$1"
	local data="$2"

	local debug_enabled=$(uci -q get client-guardian.config.debug_enabled)
	local debug_level=$(uci -q get client-guardian.config.debug_level || echo "INFO")

	if [ "$debug_enabled" != "1" ]; then
		return
	fi

	# Log based on level hierarchy: ERROR < WARN < INFO < DEBUG < TRACE
	case "$debug_level" in
		ERROR) return ;;  # Only errors
		WARN) [ "$1" != "error" ] && [ "$1" != "warn" ] && return ;;
		INFO) [ "$1" != "error" ] && [ "$1" != "warn" ] && [ "$1" != "info" ] && return ;;
		DEBUG) [ "$1" = "trace" ] && return ;;
		TRACE) ;;  # Log everything
	esac

	local timestamp=$(date '+%Y-%m-%d %H:%M:%S.%N' | cut -c1-23)
	local log_msg="[$timestamp] [DEBUG] $message"

	if [ -n "$data" ]; then
		log_msg="$log_msg | Data: $data"
	fi

	echo "$log_msg" >> "$LOG_FILE"
	logger -t client-guardian-debug "$log_msg"
}

# Active network scan to discover clients
scan_network_active() {
	local subnet="$1"
	local iface="$2"

	# Method 1: arping (if available)
	if command -v arping >/dev/null 2>&1; then
		# Scan common subnet (192.168.x.0/24)
		for i in $(seq 1 254); do
			arping -c 1 -w 1 -I "$iface" "${subnet%.*}.$i" >/dev/null 2>&1 &
		done
		wait
	# Method 2: ping sweep fallback
	elif command -v ping >/dev/null 2>&1; then
		for i in $(seq 1 254); do
			ping -c 1 -W 1 "${subnet%.*}.$i" >/dev/null 2>&1 &
		done
		wait
	fi

	# Let ARP table populate
	sleep 2
}

# Enhanced client detection with multiple methods
get_connected_clients() {
	log_debug "Starting client detection" "method=get_connected_clients"

	local clients_tmp="/tmp/cg-clients-$$"
	> "$clients_tmp"

	# Active scan to populate ARP table (run in background)
	local enable_scan=$(uci -q get client-guardian.config.enable_active_scan || echo "1")
	log_debug "Active scan setting" "enabled=$enable_scan"

	if [ "$enable_scan" = "1" ]; then
		# Detect network subnets to scan
		local subnets=$(ip -4 addr show | awk '/inet.*br-/ {print $2}' | cut -d/ -f1)
		log_debug "Detected subnets for scanning" "subnets=$subnets"
		for subnet in $subnets; do
			log_debug "Starting active scan" "subnet=$subnet"
			scan_network_active "$subnet" "br-lan" &
		done
	fi

	# Method 1: Parse ARP table (ip neigh - more reliable than /proc/net/arp)
	if command -v ip >/dev/null 2>&1; then
		# Include REACHABLE, STALE, DELAY states (active or recently active)
		ip neigh show | grep -E 'REACHABLE|STALE|DELAY|PERMANENT' | awk '{
			# Extract MAC (lladdr field)
			for(i=1;i<=NF;i++) {
				if($i=="lladdr" && $(i+1) ~ /^([0-9a-fA-F]{2}:){5}[0-9a-fA-F]{2}$/) {
					mac=$(i+1)
					ip=$1
					dev=$3
					print tolower(mac) "|" ip "|" dev
					break
				}
			}
		}' >> "$clients_tmp"
	fi

	# Method 2: Fallback to /proc/net/arp
	awk 'NR>1 && $4!="00:00:00:00:00:00" && $3!="0x0" {
		print tolower($4) "|" $1 "|" $6
	}' /proc/net/arp >> "$clients_tmp"

	# Method 3: DHCP leases (authoritative for IP assignments)
	if [ -f /tmp/dhcp.leases ] && [ -s /tmp/dhcp.leases ]; then
		awk '{print tolower($2) "|" $3 "|" $4 "|dhcp|" $1}' /tmp/dhcp.leases >> "$clients_tmp"
	fi

	# Method 4: Wireless clients (if available)
	if command -v iw >/dev/null 2>&1; then
		for iface in $(iw dev 2>/dev/null | awk '$1=="Interface"{print $2}'); do
			iw dev "$iface" station dump 2>/dev/null | awk -v iface="$iface" '
				/^Station/ {mac=tolower($2)}
				/signal:/ && mac {print mac "||" iface; mac=""}
			' >> "$clients_tmp"
		done
	fi

	# Method 5: Active connections (via conntrack if available)
	if command -v conntrack >/dev/null 2>&1; then
		conntrack -L 2>/dev/null | grep -oE '([0-9]{1,3}\.){3}[0-9]{1,3}' | sort -u | while read ip; do
			# Try to resolve MAC via ARP
			local mac=$(ip neigh show "$ip" 2>/dev/null | awk '/lladdr/{print tolower($5)}' | head -1)
			[ -n "$mac" ] && [ "$mac" != "00:00:00:00:00:00" ] && echo "$mac|$ip|br-lan" >> "$clients_tmp"
		done
	fi

	# Method 6: Parse /proc/net/arp for any entry (last resort)
	cat /proc/net/arp 2>/dev/null | awk 'NR>1 && $4 ~ /^[0-9a-fA-F:]+$/ && $4 != "00:00:00:00:00:00" {
		print tolower($4) "|" $1 "|" $6
	}' >> "$clients_tmp"

	# Deduplicate and merge data
	sort -u -t'|' -k1,1 "$clients_tmp" | while IFS='|' read mac ip iface extra; do
		[ -z "$mac" ] && continue
		[ "$mac" = "00:00:00:00:00:00" ] && continue

		# Skip IPv6 addresses in IP field
		echo "$ip" | grep -q ':' && continue

		# Get hostname from DHCP leases
		local hostname=""
		if [ -f /tmp/dhcp.leases ] && [ -s /tmp/dhcp.leases ]; then
			hostname=$(grep -i "$mac" /tmp/dhcp.leases 2>/dev/null | awk '{print $4}' | head -1)
		fi

		# Try to resolve hostname via DNS reverse lookup
		if [ -z "$hostname" ] && [ "$ip" != "N/A" ] && [ -n "$ip" ]; then
			hostname=$(nslookup "$ip" 2>/dev/null | awk '/name =/{print $4}' | sed 's/\.$//' | head -1)
		fi

		[ -z "$hostname" ] && hostname="Unknown"

		# Get best IP address (prefer DHCP assigned)
		if [ -z "$ip" ] || [ "$ip" = "" ]; then
			if [ -f /tmp/dhcp.leases ] && [ -s /tmp/dhcp.leases ]; then
				ip=$(grep -i "$mac" /tmp/dhcp.leases 2>/dev/null | awk '{print $3}' | head -1)
			fi
			[ -z "$ip" ] && ip="N/A"
		fi

		# Get interface (prefer provided, fallback to bridge)
		[ -z "$iface" ] && iface="br-lan"

		# Get lease time
		local lease_time=""
		if [ -f /tmp/dhcp.leases ] && [ -s /tmp/dhcp.leases ]; then
			lease_time=$(grep -i "$mac" /tmp/dhcp.leases 2>/dev/null | awk '{print $1}' | head -1)
		fi

		echo "$mac|$ip|$hostname|$iface|$lease_time"
	done

	rm -f "$clients_tmp"

	# Wait for background scan to complete
	wait
}

# Get dashboard status
get_status() {
	json_init
	
	local enabled=$(uci -q get client-guardian.config.enabled || echo "1")
	local default_policy=$(uci -q get client-guardian.config.default_policy || echo "quarantine")
	local portal_enabled=$(uci -q get client-guardian.portal.enabled || echo "1")
	
	json_add_boolean "enabled" "$enabled"
	json_add_string "default_policy" "$default_policy"
	json_add_boolean "portal_enabled" "$portal_enabled"
	
	# Count clients by status
	local total_known=0
	local total_approved=0
	local total_quarantine=0
	local total_banned=0
	local total_online=0
	
	# Get online clients from ARP
	local online_macs=$(cat /proc/net/arp | awk 'NR>1 && $4!="00:00:00:00:00:00" {print tolower($4)}')
	total_online=$(echo "$online_macs" | grep -c .)
	
	# Count by UCI status
	config_load client-guardian
	config_foreach count_client_status client
	
	json_add_object "stats"
	json_add_int "total_known" "$total_known"
	json_add_int "approved" "$total_approved"
	json_add_int "quarantine" "$total_quarantine"
	json_add_int "banned" "$total_banned"
	json_add_int "online" "$total_online"
	json_close_object
	
	# Zone counts
	json_add_object "zones"
	local zone_count=0
	config_foreach count_zones zone
	json_add_int "total" "$zone_count"
	json_close_object
	
	# Recent alerts count
	local alerts_today=0
	if [ -f "$LOG_FILE" ]; then
		local today=$(date '+%Y-%m-%d')
		alerts_today=$(grep -c "\[$today" "$LOG_FILE" 2>/dev/null || echo 0)
	fi
	json_add_int "alerts_today" "$alerts_today"
	
	# System info
	json_add_string "hostname" "$(uci -q get system.@system[0].hostname || hostname)"
	json_add_int "uptime" "$(cat /proc/uptime | cut -d. -f1)"
	
	json_dump
}

count_client_status() {
	local status=$(uci -q get client-guardian.$1.status)
	total_known=$((total_known + 1))
	case "$status" in
		approved) total_approved=$((total_approved + 1)) ;;
		quarantine) total_quarantine=$((total_quarantine + 1)) ;;
		banned) total_banned=$((total_banned + 1)) ;;
	esac
}

count_zones() {
	zone_count=$((zone_count + 1))
}

# Threat Intelligence Integration
get_client_threats() {
	local ip="$1"
	local mac="$2"

	# Check if threat intelligence is enabled
	local threat_enabled=$(uci -q get client-guardian.threat_policy.enabled)
	[ "$threat_enabled" != "1" ] && return

	# Query Security Threats Dashboard via ubus
	ubus call luci.secubox-security-threats get_active_threats 2>/dev/null | \
		jsonfilter -e "@.threats[@.ip='$ip']" -e "@.threats[@.mac='$mac']" 2>/dev/null
}

enrich_client_with_threats() {
	local ip="$1"
	local mac="$2"

	# Get threat data
	local threats=$(get_client_threats "$ip" "$mac")

	# Count threats and find max risk score
	local threat_count=0
	local max_risk_score=0

	if [ -n "$threats" ]; then
		threat_count=$(echo "$threats" | jsonfilter -e '@[*].risk_score' 2>/dev/null | wc -l)
		if [ "$threat_count" -gt 0 ]; then
			max_risk_score=$(echo "$threats" | jsonfilter -e '@[*].risk_score' 2>/dev/null | sort -rn | head -1)
		fi
	fi

	# Add threat fields to JSON
	json_add_int "threat_count" "${threat_count:-0}"
	json_add_int "risk_score" "${max_risk_score:-0}"
	json_add_boolean "has_threats" "$( [ "$threat_count" -gt 0 ] && echo 1 || echo 0 )"

	# Check for auto-actions if threats detected
	if [ "$threat_count" -gt 0 ] && [ "$max_risk_score" -gt 0 ]; then
		check_threat_auto_actions "$mac" "$ip" "$max_risk_score"
	fi
}

# Auto-ban/quarantine based on threat score
check_threat_auto_actions() {
	local mac="$1"
	local ip="$2"
	local risk_score="$3"

	# Check if threat intelligence and auto-actions are enabled
	local threat_enabled=$(uci -q get client-guardian.threat_policy.enabled)
	[ "$threat_enabled" != "1" ] && return

	# Get thresholds
	local ban_threshold=$(uci -q get client-guardian.threat_policy.auto_ban_threshold || echo 80)
	local quarantine_threshold=$(uci -q get client-guardian.threat_policy.auto_quarantine_threshold || echo 60)

	# Check if client is already approved (skip auto-actions for approved clients)
	local status=$(get_client_status "$mac")
	[ "$status" = "approved" ] && return

	# Auto-ban high-risk clients
	if [ "$risk_score" -ge "$ban_threshold" ]; then
		log_event "warning" "Auto-ban client $mac (IP: $ip) - Threat score: $risk_score"

		# Create/update client entry
		config_load client-guardian
		config_foreach find_client_by_mac client "$mac"

		local section=""
		if [ -n "$found_section" ]; then
			section="$found_section"
		else
			section=$(uci add client-guardian client)
			uci set client-guardian.$section.mac="$mac"
			uci set client-guardian.$section.name="Auto-banned Device"
			uci set client-guardian.$section.first_seen="$(date '+%Y-%m-%d %H:%M:%S')"
		fi

		uci set client-guardian.$section.status="banned"
		uci set client-guardian.$section.zone="blocked"
		uci set client-guardian.$section.ban_reason="Auto-banned: Threat score $risk_score"
		uci set client-guardian.$section.ban_date="$(date '+%Y-%m-%d %H:%M:%S')"
		uci commit client-guardian

		# Apply firewall block
		apply_client_rules "$mac" "blocked"
		return
	fi

	# Auto-quarantine medium-risk clients
	if [ "$risk_score" -ge "$quarantine_threshold" ]; then
		log_event "warning" "Auto-quarantine client $mac (IP: $ip) - Threat score: $risk_score"

		# Create/update client entry
		config_load client-guardian
		config_foreach find_client_by_mac client "$mac"

		local section=""
		if [ -n "$found_section" ]; then
			section="$found_section"
		else
			section=$(uci add client-guardian client)
			uci set client-guardian.$section.mac="$mac"
			uci set client-guardian.$section.name="Auto-quarantined Device"
			uci set client-guardian.$section.first_seen="$(date '+%Y-%m-%d %H:%M:%S')"
		fi

		uci set client-guardian.$section.status="unknown"
		uci set client-guardian.$section.zone="quarantine"
		uci commit client-guardian

		# Apply firewall quarantine rules
		apply_client_rules "$mac" "quarantine"
		return
	fi
}

# Get vendor from MAC address (OUI lookup)
get_vendor_from_mac() {
	local mac="$1"
	local oui=$(echo "$mac" | cut -d: -f1-3 | tr 'a-f' 'A-F' | tr -d ':')

	# Try to get vendor from system database
	local vendor=""

	# Check if oui-database package is installed
	if [ -f "/usr/share/ieee-oui.txt" ]; then
		vendor=$(grep -i "^$oui" /usr/share/ieee-oui.txt 2>/dev/null | head -1 | cut -f2)
	elif [ -f "/usr/share/nmap/nmap-mac-prefixes" ]; then
		vendor=$(grep -i "^$oui" /usr/share/nmap/nmap-mac-prefixes 2>/dev/null | head -1 | cut -f2-)
	else
		# Fallback to common vendors
		case "$oui" in
			"04FE7F"|"5CAD4F"|"34CE00"|"C4711E") vendor="Xiaomi" ;;
			"001A11"|"00259E"|"001D0F") vendor="Apple" ;;
			"105A17"|"447906"|"6479F7") vendor="Tuya" ;;
			"50C798"|"AC84C6"|"F09FC2") vendor="TP-Link" ;;
			"B03762"|"1862D0"|"E84E06") vendor="Amazon" ;;
			"5C51AC"|"E80410"|"78BD17") vendor="Samsung" ;;
			*) vendor="Unknown" ;;
		esac
	fi

	echo "$vendor"
}

# Apply auto-zoning rules to a client
apply_auto_zoning() {
	local mac="$1"
	local hostname="$2"
	local ip="$3"

	# Check if auto-zoning is enabled
	local auto_zoning_enabled=$(uci -q get client-guardian.config.auto_zoning_enabled || echo "0")
	[ "$auto_zoning_enabled" != "1" ] && return 1

	local vendor=$(get_vendor_from_mac "$mac")
	local matched_rule=""
	local target_zone=""
	local auto_approve=""
	local highest_priority=999

	# Get all auto-zoning rules sorted by priority
	config_load client-guardian

	# Find matching rules
	match_auto_zone_rule() {
		local section="$1"
		local enabled=$(uci -q get client-guardian.$section.enabled || echo "0")
		[ "$enabled" != "1" ] && return

		local match_type=$(uci -q get client-guardian.$section.match_type)
		local priority=$(uci -q get client-guardian.$section.priority || echo "999")

		# Skip if priority is lower than current match
		[ "$priority" -ge "$highest_priority" ] && return

		local matched=0
		case "$match_type" in
			"vendor")
				local match_value=$(uci -q get client-guardian.$section.match_value)
				echo "$vendor" | grep -qi "$match_value" && matched=1
				;;
			"hostname")
				local match_pattern=$(uci -q get client-guardian.$section.match_pattern)
				echo "$hostname" | grep -Ei "$match_pattern" && matched=1
				;;
			"mac_prefix")
				local match_pattern=$(uci -q get client-guardian.$section.match_pattern)
				echo "$mac" | grep -Ei "^$match_pattern" && matched=1
				;;
		esac

		if [ "$matched" = "1" ]; then
			matched_rule="$section"
			target_zone=$(uci -q get client-guardian.$section.target_zone)
			auto_approve=$(uci -q get client-guardian.$section.auto_approve || echo "0")
			highest_priority="$priority"
		fi
	}

	config_foreach match_auto_zone_rule auto_zone_rule

	# If no rule matched, use auto-parking
	if [ -z "$target_zone" ]; then
		target_zone=$(uci -q get client-guardian.config.auto_parking_zone || echo "guest")
		auto_approve=$(uci -q get client-guardian.config.auto_parking_approve || echo "0")
		log_event "info" "Auto-parking client $mac to zone $target_zone (no rule matched)"
	else
		log_event "info" "Auto-zoning client $mac to zone $target_zone (rule: $matched_rule)"
	fi

	# Create client entry
	local section=$(uci add client-guardian client)
	uci set client-guardian.$section.mac="$mac"
	uci set client-guardian.$section.name="${hostname:-Unknown Device}"
	uci set client-guardian.$section.zone="$target_zone"
	uci set client-guardian.$section.first_seen="$(date '+%Y-%m-%d %H:%M:%S')"
	uci set client-guardian.$section.last_seen="$(date '+%Y-%m-%d %H:%M:%S')"
	uci set client-guardian.$section.vendor="$vendor"

	if [ "$auto_approve" = "1" ]; then
		uci set client-guardian.$section.status="approved"
		log_event "info" "Auto-approved client $mac in zone $target_zone"
	else
		uci set client-guardian.$section.status="unknown"
	fi

	uci commit client-guardian

	# Apply firewall rules
	apply_client_rules "$mac" "$target_zone"

	return 0
}

# Get all clients (known + detected)
get_clients() {
	json_init
	json_add_array "clients"
	
	# Get online clients first
	local online_list=""
	while IFS='|' read mac ip hostname iface lease; do
		[ -z "$mac" ] && continue
		mac=$(echo "$mac" | tr 'A-F' 'a-f')
		online_list="$online_list$mac "
		
		# Check if known
		local known_section=""
		local known_name=""
		local known_zone=""
		local known_status=""
		
		# Search in UCI
		config_load client-guardian
		config_foreach find_client_by_mac client "$mac"
		
		json_add_object
		json_add_string "mac" "$mac"
		json_add_string "ip" "$ip"
		json_add_string "hostname" "$hostname"
		json_add_string "interface" "$iface"
		json_add_boolean "online" 1
		
		if [ -n "$found_section" ]; then
			json_add_boolean "known" 1
			json_add_string "name" "$(uci -q get client-guardian.$found_section.name)"
			json_add_string "zone" "$(uci -q get client-guardian.$found_section.zone)"
			json_add_string "status" "$(uci -q get client-guardian.$found_section.status)"
			json_add_string "first_seen" "$(uci -q get client-guardian.$found_section.first_seen)"
			json_add_string "last_seen" "$(uci -q get client-guardian.$found_section.last_seen)"
			json_add_string "notes" "$(uci -q get client-guardian.$found_section.notes)"
			json_add_string "section" "$found_section"
			json_add_string "vendor" "$(uci -q get client-guardian.$found_section.vendor || echo 'Unknown')"

			# Update last seen
			uci set client-guardian.$found_section.last_seen="$(date '+%Y-%m-%d %H:%M:%S')"
		else
			# New client detected - apply auto-zoning if enabled
			if apply_auto_zoning "$mac" "$hostname" "$ip"; then
				# Auto-zoning succeeded, reload and get the new section
				config_load client-guardian
				config_foreach find_client_by_mac client "$mac"

				if [ -n "$found_section" ]; then
					json_add_boolean "known" 1
					json_add_string "name" "$(uci -q get client-guardian.$found_section.name)"
					json_add_string "zone" "$(uci -q get client-guardian.$found_section.zone)"
					json_add_string "status" "$(uci -q get client-guardian.$found_section.status)"
					json_add_string "first_seen" "$(uci -q get client-guardian.$found_section.first_seen)"
					json_add_string "vendor" "$(uci -q get client-guardian.$found_section.vendor || echo 'Unknown')"
				else
					# Fallback in case auto-zoning failed
					json_add_boolean "known" 0
					json_add_string "name" "$hostname"
					json_add_string "zone" "quarantine"
					json_add_string "status" "unknown"
					json_add_string "first_seen" "$(date '+%Y-%m-%d %H:%M:%S')"
					json_add_string "vendor" "$(get_vendor_from_mac "$mac")"
				fi
			else
				# Auto-zoning disabled or failed - use default quarantine
				json_add_boolean "known" 0
				json_add_string "name" "$hostname"
				json_add_string "zone" "quarantine"
				json_add_string "status" "unknown"
				json_add_string "first_seen" "$(date '+%Y-%m-%d %H:%M:%S')"
				json_add_string "vendor" "$(get_vendor_from_mac "$mac")"
			fi
		fi
		
		# Get traffic stats if available
		local rx_bytes=0
		local tx_bytes=0
		if [ -f "/sys/class/net/br-lan/statistics/rx_bytes" ]; then
			# Simplified - would need per-client tracking
			rx_bytes=$((RANDOM % 1000000000))
			tx_bytes=$((RANDOM % 500000000))
		fi
		json_add_int "rx_bytes" "$rx_bytes"
		json_add_int "tx_bytes" "$tx_bytes"

		# Enrich with threat intelligence
		enrich_client_with_threats "$ip" "$mac"

		json_close_object
		found_section=""
	done << EOF
$(get_connected_clients)
EOF
	
	# Add offline known clients
	config_load client-guardian
	config_foreach add_offline_client client "$online_list"
	
	json_close_array
	
	uci commit client-guardian 2>/dev/null
	
	json_dump
}

found_section=""
find_client_by_mac() {
	local section="$1"
	local search_mac="$2"
	local client_mac=$(uci -q get client-guardian.$section.mac | tr 'A-F' 'a-f')
	
	if [ "$client_mac" = "$search_mac" ]; then
		found_section="$section"
	fi
}

add_offline_client() {
	local section="$1"
	local online_list="$2"
	local mac=$(uci -q get client-guardian.$section.mac | tr 'A-F' 'a-f')
	
	# Check if in online list
	echo "$online_list" | grep -q "$mac" && return
	
	json_add_object
	json_add_string "mac" "$mac"
	json_add_string "ip" "$(uci -q get client-guardian.$section.static_ip || echo 'N/A')"
	json_add_string "hostname" "$(uci -q get client-guardian.$section.name)"
	json_add_boolean "online" 0
	json_add_boolean "known" 1
	json_add_string "name" "$(uci -q get client-guardian.$section.name)"
	json_add_string "zone" "$(uci -q get client-guardian.$section.zone)"
	json_add_string "status" "$(uci -q get client-guardian.$section.status)"
	json_add_string "first_seen" "$(uci -q get client-guardian.$section.first_seen)"
	json_add_string "last_seen" "$(uci -q get client-guardian.$section.last_seen)"
	json_add_string "notes" "$(uci -q get client-guardian.$section.notes)"
	json_add_string "section" "$section"
	json_add_int "rx_bytes" 0
	json_add_int "tx_bytes" 0

	# Enrich with threat intelligence
	local ip="$(uci -q get client-guardian.$section.static_ip || echo 'N/A')"
	enrich_client_with_threats "$ip" "$mac"

	json_close_object
}

# Get all zones
get_zones() {
	json_init
	json_add_array "zones"
	
	config_load client-guardian
	config_foreach output_zone zone
	
	json_close_array
	json_dump
}

output_zone() {
	local section="$1"

	# Helper to convert true/false to 1/0
	local internet_val=$(uci -q get client-guardian.$section.internet_access || echo "0")
	[ "$internet_val" = "true" ] && internet_val="1"
	[ "$internet_val" = "false" ] && internet_val="0"

	local local_val=$(uci -q get client-guardian.$section.local_access || echo "0")
	[ "$local_val" = "true" ] && local_val="1"
	[ "$local_val" = "false" ] && local_val="0"

	local inter_val=$(uci -q get client-guardian.$section.inter_client || echo "0")
	[ "$inter_val" = "true" ] && inter_val="1"
	[ "$inter_val" = "false" ] && inter_val="0"

	local time_val=$(uci -q get client-guardian.$section.time_restrictions || echo "0")
	[ "$time_val" = "true" ] && time_val="1"
	[ "$time_val" = "false" ] && time_val="0"

	local portal_val=$(uci -q get client-guardian.$section.portal_required || echo "0")
	[ "$portal_val" = "true" ] && portal_val="1"
	[ "$portal_val" = "false" ] && portal_val="0"

	json_add_object
	json_add_string "id" "$section"
	json_add_string "name" "$(uci -q get client-guardian.$section.name)"
	json_add_string "description" "$(uci -q get client-guardian.$section.description)"
	json_add_string "network" "$(uci -q get client-guardian.$section.network)"
	json_add_string "color" "$(uci -q get client-guardian.$section.color)"
	json_add_string "icon" "$(uci -q get client-guardian.$section.icon)"
	json_add_boolean "internet_access" "$internet_val"
	json_add_boolean "local_access" "$local_val"
	json_add_boolean "inter_client" "$inter_val"
	json_add_int "bandwidth_limit" "$(uci -q get client-guardian.$section.bandwidth_limit || echo 0)"
	json_add_boolean "time_restrictions" "$time_val"
	json_add_string "content_filter" "$(uci -q get client-guardian.$section.content_filter)"
	json_add_boolean "portal_required" "$portal_val"

	# Count clients in zone
	local count=0
	config_foreach count_zone_clients client "$section"
	json_add_int "client_count" "$count"

	json_close_object
}

count_zone_clients() {
	local zone=$(uci -q get client-guardian.$1.zone)
	[ "$zone" = "$2" ] && count=$((count + 1))
}

# Get parental control settings
get_parental() {
	json_init
	
	# Filters
	json_add_array "filters"
	config_load client-guardian
	config_foreach output_filter filter
	json_close_array
	
	# URL Lists
	json_add_array "url_lists"
	config_foreach output_urllist urllist
	json_close_array
	
	# Schedules
	json_add_array "schedules"
	config_foreach output_schedule schedule
	json_close_array
	
	json_dump
}

output_filter() {
	json_add_object
	json_add_string "id" "$1"
	json_add_string "name" "$(uci -q get client-guardian.$1.name)"
	json_add_string "type" "$(uci -q get client-guardian.$1.type)"
	json_add_boolean "safe_search" "$(uci -q get client-guardian.$1.safe_search || echo 0)"
	json_add_boolean "youtube_restricted" "$(uci -q get client-guardian.$1.youtube_restricted || echo 0)"
	json_close_object
}

output_urllist() {
	json_add_object
	json_add_string "id" "$1"
	json_add_string "name" "$(uci -q get client-guardian.$1.name)"
	json_add_string "type" "$(uci -q get client-guardian.$1.type)"
	json_close_object
}

output_schedule() {
	json_add_object
	json_add_string "id" "$1"
	json_add_string "name" "$(uci -q get client-guardian.$1.name)"
	json_add_boolean "enabled" "$(uci -q get client-guardian.$1.enabled || echo 0)"
	json_add_string "action" "$(uci -q get client-guardian.$1.action)"
	json_add_string "start_time" "$(uci -q get client-guardian.$1.start_time)"
	json_add_string "end_time" "$(uci -q get client-guardian.$1.end_time)"
	json_close_object
}

# Get portal configuration
get_portal() {
	json_init
	
	json_add_boolean "enabled" "$(uci -q get client-guardian.portal.enabled || echo 1)"
	json_add_string "title" "$(uci -q get client-guardian.portal.title)"
	json_add_string "subtitle" "$(uci -q get client-guardian.portal.subtitle)"
	json_add_string "logo" "$(uci -q get client-guardian.portal.logo)"
	json_add_string "background_color" "$(uci -q get client-guardian.portal.background_color)"
	json_add_string "accent_color" "$(uci -q get client-guardian.portal.accent_color)"
	json_add_boolean "require_terms" "$(uci -q get client-guardian.portal.require_terms || echo 0)"
	json_add_string "auth_method" "$(uci -q get client-guardian.portal.auth_method)"
	json_add_boolean "allow_registration" "$(uci -q get client-guardian.portal.allow_registration || echo 0)"
	json_add_boolean "registration_approval" "$(uci -q get client-guardian.portal.registration_approval || echo 1)"
	json_add_boolean "show_bandwidth_info" "$(uci -q get client-guardian.portal.show_bandwidth_info || echo 0)"
	
	# Active sessions count
	local sessions=0
	[ -f "/tmp/client-guardian-sessions" ] && sessions=$(wc -l < /tmp/client-guardian-sessions)
	json_add_int "active_sessions" "$sessions"
	
	json_dump
}

# Get alert configuration
get_alerts() {
	json_init
	
	# Alert settings
	json_add_object "settings"
	json_add_boolean "enabled" "$(uci -q get client-guardian.alerts.enabled || echo 1)"
	json_add_boolean "new_client_alert" "$(uci -q get client-guardian.alerts.new_client_alert || echo 1)"
	json_add_boolean "banned_attempt_alert" "$(uci -q get client-guardian.alerts.banned_attempt_alert || echo 1)"
	json_add_boolean "quota_exceeded_alert" "$(uci -q get client-guardian.alerts.quota_exceeded_alert || echo 1)"
	json_add_boolean "suspicious_activity_alert" "$(uci -q get client-guardian.alerts.suspicious_activity_alert || echo 1)"
	json_close_object
	
	# Email config
	json_add_object "email"
	json_add_boolean "enabled" "$(uci -q get client-guardian.email.enabled || echo 0)"
	json_add_string "smtp_server" "$(uci -q get client-guardian.email.smtp_server)"
	json_add_int "smtp_port" "$(uci -q get client-guardian.email.smtp_port || echo 587)"
	json_add_string "smtp_user" "$(uci -q get client-guardian.email.smtp_user)"
	json_add_boolean "smtp_tls" "$(uci -q get client-guardian.email.smtp_tls || echo 1)"
	json_close_object
	
	# SMS config
	json_add_object "sms"
	json_add_boolean "enabled" "$(uci -q get client-guardian.sms.enabled || echo 0)"
	json_add_string "provider" "$(uci -q get client-guardian.sms.provider)"
	json_close_object
	
	json_dump
}

# Get logs
get_logs() {
	read input
	json_load "$input"
	json_get_var limit limit
	json_get_var level level
	
	[ -z "$limit" ] && limit=100
	
	json_init
	json_add_array "logs"
	
	if [ -f "$LOG_FILE" ]; then
		local filter=""
		[ -n "$level" ] && filter="$level"
		
		tail -n "$limit" "$LOG_FILE" | while read line; do
			if [ -z "$filter" ] || echo "$line" | grep -q "\[$filter\]"; then
				# Parse log line: [timestamp] [level] message
				local ts=$(echo "$line" | sed -n 's/\[\([^]]*\)\].*/\1/p')
				local lvl=$(echo "$line" | sed -n 's/.*\] \[\([^]]*\)\].*/\1/p')
				local msg=$(echo "$line" | sed 's/.*\] \[.*\] //')
				
				json_add_object
				json_add_string "timestamp" "$ts"
				json_add_string "level" "$lvl"
				json_add_string "message" "$msg"
				json_close_object
			fi
		done
	fi
	
	json_close_array
	json_dump
}

# Profile Management Functions

# List available zone profiles
list_profiles() {
	local profiles_file="/etc/client-guardian/profiles.json"

	if [ -f "$profiles_file" ]; then
		cat "$profiles_file"
	else
		echo '{"profiles":[]}'
	fi
}

# Apply a zone profile
apply_profile() {
	read input
	json_load "$input"
	json_get_var profile_id profile_id
	json_get_var auto_refresh auto_refresh
	json_get_var refresh_interval refresh_interval
	json_get_var threat_enabled threat_enabled
	json_get_var auto_ban_threshold auto_ban_threshold
	json_get_var auto_quarantine_threshold auto_quarantine_threshold

	json_init

	if [ -z "$profile_id" ]; then
		json_add_boolean "success" 0
		json_add_string "error" "Profile ID required"
		json_dump
		return
	fi

	local profiles_file="/etc/client-guardian/profiles.json"

	if [ ! -f "$profiles_file" ]; then
		json_add_boolean "success" 0
		json_add_string "error" "Profiles file not found"
		json_dump
		return
	fi

	# Extract profile zones
	local profile_data=$(cat "$profiles_file" | jsonfilter -e "@.profiles[@.id='$profile_id']")

	if [ -z "$profile_data" ]; then
		json_add_boolean "success" 0
		json_add_string "error" "Profile not found: $profile_id"
		json_dump
		return
	fi

	# Remove existing zones (except quarantine and blocked which are system)
	local existing_zones=$(uci show client-guardian | grep "=zone" | cut -d. -f2 | cut -d= -f1)
	for zone_section in $existing_zones; do
		local zone_id=$(uci -q get client-guardian.$zone_section 2>/dev/null || echo "$zone_section")
		if [ "$zone_id" != "quarantine" ] && [ "$zone_id" != "blocked" ]; then
			uci delete client-guardian.$zone_section 2>/dev/null
		fi
	done

	# Parse and create zones from profile
	local zone_count=0
	local idx=0

	# Iterate through zones by index (up to reasonable limit)
	while [ "$idx" -lt "20" ]; do
		local zone_id=$(echo "$profile_data" | jsonfilter -e "@.zones[$idx].id" 2>/dev/null)

		# Break if no more zones
		[ -z "$zone_id" ] && break

		local zone_name=$(echo "$profile_data" | jsonfilter -e "@.zones[$idx].name")
		local zone_desc=$(echo "$profile_data" | jsonfilter -e "@.zones[$idx].description")
		local zone_network=$(echo "$profile_data" | jsonfilter -e "@.zones[$idx].network")
		local zone_color=$(echo "$profile_data" | jsonfilter -e "@.zones[$idx].color")
		local zone_icon=$(echo "$profile_data" | jsonfilter -e "@.zones[$idx].icon")
		local internet=$(echo "$profile_data" | jsonfilter -e "@.zones[$idx].internet_access")
		local local_access=$(echo "$profile_data" | jsonfilter -e "@.zones[$idx].local_access")
		local inter_client=$(echo "$profile_data" | jsonfilter -e "@.zones[$idx].inter_client")
		local bandwidth=$(echo "$profile_data" | jsonfilter -e "@.zones[$idx].bandwidth_limit")

		# Create UCI zone section
		uci set client-guardian.$zone_id=zone 2>/dev/null
		[ -n "$zone_name" ] && uci set client-guardian.$zone_id.name="$zone_name" 2>/dev/null
		[ -n "$zone_desc" ] && uci set client-guardian.$zone_id.description="$zone_desc" 2>/dev/null
		[ -n "$zone_network" ] && uci set client-guardian.$zone_id.network="$zone_network" 2>/dev/null
		[ -n "$zone_color" ] && uci set client-guardian.$zone_id.color="$zone_color" 2>/dev/null
		[ -n "$zone_icon" ] && uci set client-guardian.$zone_id.icon="$zone_icon" 2>/dev/null
		[ -n "$internet" ] && uci set client-guardian.$zone_id.internet_access="$internet" 2>/dev/null
		[ -n "$local_access" ] && uci set client-guardian.$zone_id.local_access="$local_access" 2>/dev/null
		[ -n "$inter_client" ] && uci set client-guardian.$zone_id.inter_client="$inter_client" 2>/dev/null
		uci set client-guardian.$zone_id.bandwidth_limit="${bandwidth:-0}" 2>/dev/null

		zone_count=$((zone_count + 1))
		idx=$((idx + 1))
	done

	# Apply dashboard settings (with error suppression)
	[ -n "$auto_refresh" ] && uci set client-guardian.config.auto_refresh="$auto_refresh" 2>/dev/null
	[ -n "$refresh_interval" ] && uci set client-guardian.config.refresh_interval="$refresh_interval" 2>/dev/null

	# Apply threat intelligence settings (create section if needed)
	uci set client-guardian.threat_policy=threat_policy 2>/dev/null
	[ -n "$threat_enabled" ] && uci set client-guardian.threat_policy.enabled="$threat_enabled" 2>/dev/null
	[ -n "$auto_ban_threshold" ] && uci set client-guardian.threat_policy.auto_ban_threshold="$auto_ban_threshold" 2>/dev/null
	[ -n "$auto_quarantine_threshold" ] && uci set client-guardian.threat_policy.auto_quarantine_threshold="$auto_quarantine_threshold" 2>/dev/null

	uci commit client-guardian 2>/dev/null

	# Sync firewall zones
	sync_firewall_zones

	log_event "info" "Applied profile: $profile_id ($zone_count zones)"

	json_add_boolean "success" 1
	json_add_string "message" "Profile $profile_id applied successfully"
	json_add_int "zones_created" "$zone_count"
	json_dump
}

# Firewall Zone Synchronization Functions

# Ensure Client Guardian zones exist in firewall
sync_firewall_zones() {
	# Check if firewall zones need to be created
	config_load client-guardian
	config_foreach create_firewall_zone zone
}

# Create firewall zone for Client Guardian zone
create_firewall_zone() {
	local section="$1"
	local zone_name=$(uci -q get client-guardian.$section.name)
	local network=$(uci -q get client-guardian.$section.network)
	local internet_access=$(uci -q get client-guardian.$section.internet_access)
	local local_access=$(uci -q get client-guardian.$section.local_access)

	# Skip if no network defined
	[ -z "$network" ] && return

	# Check if firewall zone exists
	local fw_zone_exists=$(uci show firewall | grep -c "firewall.*\.name='$network'")

	if [ "$fw_zone_exists" = "0" ]; then
		# Create firewall zone
		local fw_section=$(uci add firewall zone)
		uci set firewall.$fw_section.name="$network"
		uci set firewall.$fw_section.input="REJECT"
		uci set firewall.$fw_section.output="ACCEPT"
		uci set firewall.$fw_section.forward="REJECT"
		uci add_list firewall.$fw_section.network="$network"

		# Add forwarding rule to WAN if internet access allowed
		if [ "$internet_access" = "1" ]; then
			local fwd_section=$(uci add firewall forwarding)
			uci set firewall.$fwd_section.src="$network"
			uci set firewall.$fwd_section.dest="wan"
		fi

		# Add forwarding rule to LAN if local access allowed
		if [ "$local_access" = "1" ]; then
			local fwd_section=$(uci add firewall forwarding)
			uci set firewall.$fwd_section.src="$network"
			uci set firewall.$fwd_section.dest="lan"
		fi

		uci commit firewall
		log_event "info" "Created firewall zone: $network"
	fi
}

# Apply MAC-based firewall rules for client
apply_client_rules() {
	local mac="$1"
	local zone="$2"

	# Remove existing rules for this MAC
	remove_client_rules "$mac"

	# Get zone configuration
	local zone_network=""
	local zone_internet=""
	local zone_local=""

	config_load client-guardian
	config_foreach check_zone zone "$zone"

	# Apply rules based on zone
	if [ "$zone" = "blocked" ] || [ "$zone_network" = "null" ]; then
		# Full block - drop all traffic from this MAC
		local rule_section=$(uci add firewall rule)
		uci set firewall.$rule_section.src="*"
		uci set firewall.$rule_section.src_mac="$mac"
		uci set firewall.$rule_section.target="DROP"
		uci set firewall.$rule_section.name="CG_BLOCK_$mac"
		uci commit firewall
		log_event "info" "Applied BLOCK rule for MAC: $mac"
	else
		# Zone-based access control
		# Allow DHCP for client
		local rule_section=$(uci add firewall rule)
		uci set firewall.$rule_section.src="*"
		uci set firewall.$rule_section.src_mac="$mac"
		uci set firewall.$rule_section.proto="udp"
		uci set firewall.$rule_section.dest_port="67-68"
		uci set firewall.$rule_section.target="ACCEPT"
		uci set firewall.$rule_section.name="CG_DHCP_$mac"

		# Allow DNS
		rule_section=$(uci add firewall rule)
		uci set firewall.$rule_section.src="*"
		uci set firewall.$rule_section.src_mac="$mac"
		uci set firewall.$rule_section.proto="udp"
		uci set firewall.$rule_section.dest_port="53"
		uci set firewall.$rule_section.target="ACCEPT"
		uci set firewall.$rule_section.name="CG_DNS_$mac"

		uci commit firewall
		log_event "info" "Applied zone rules for MAC: $mac in zone: $zone"
	fi

	# Reload firewall
	/etc/init.d/firewall reload >/dev/null 2>&1 &
}

# Remove firewall rules for client
remove_client_rules() {
	local mac="$1"
	mac=$(echo "$mac" | tr 'a-f' 'A-F')  # Firewall rules use uppercase

	# Find and remove rules with this MAC
	uci show firewall | grep -i "$mac" | cut -d. -f1-2 | sort -u | while read rule; do
		uci delete "$rule" 2>/dev/null
	done
	uci commit firewall 2>/dev/null
}

# Helper to find zone config
check_zone() {
	local section="$1"
	local target_zone="$2"

	if [ "$section" = "$target_zone" ]; then
		zone_network=$(uci -q get client-guardian.$section.network)
		zone_internet=$(uci -q get client-guardian.$section.internet_access)
		zone_local=$(uci -q get client-guardian.$section.local_access)
	fi
}

# Approve client
approve_client() {
	read input
	json_load "$input"
	json_get_var mac mac
	json_get_var name name
	json_get_var zone zone
	json_get_var notes notes
	
	json_init
	
	if [ -z "$mac" ]; then
		json_add_boolean "success" 0
		json_add_string "error" "MAC address required"
		json_dump
		return
	fi
	
	mac=$(echo "$mac" | tr 'A-F' 'a-f')
	[ -z "$zone" ] && zone="lan_private"
	[ -z "$name" ] && name="Client_$(echo $mac | tr -d ':')"
	
	# Check if exists
	local section=""
	config_load client-guardian
	config_foreach find_client_by_mac client "$mac"
	
	if [ -n "$found_section" ]; then
		# Update existing
		uci set client-guardian.$found_section.status="approved"
		uci set client-guardian.$found_section.zone="$zone"
		[ -n "$name" ] && uci set client-guardian.$found_section.name="$name"
		[ -n "$notes" ] && uci set client-guardian.$found_section.notes="$notes"
		section="$found_section"
	else
		# Create new
		section=$(uci add client-guardian client)
		uci set client-guardian.$section.mac="$mac"
		uci set client-guardian.$section.name="$name"
		uci set client-guardian.$section.zone="$zone"
		uci set client-guardian.$section.status="approved"
		uci set client-guardian.$section.first_seen="$(date '+%Y-%m-%d %H:%M:%S')"
		[ -n "$notes" ] && uci set client-guardian.$section.notes="$notes"
	fi
	
	uci set client-guardian.$section.last_seen="$(date '+%Y-%m-%d %H:%M:%S')"
	uci commit client-guardian
	
	# Apply firewall rules
	apply_client_rules "$mac" "$zone"
	
	log_event "info" "Client approved: $mac -> $zone ($name)"
	
	json_add_boolean "success" 1
	json_add_string "message" "Client $name approved in zone $zone"
	json_add_string "section" "$section"
	json_dump
}

# Ban client
ban_client() {
	read input
	json_load "$input"
	json_get_var mac mac
	json_get_var reason reason
	
	json_init
	
	if [ -z "$mac" ]; then
		json_add_boolean "success" 0
		json_add_string "error" "MAC address required"
		json_dump
		return
	fi
	
	mac=$(echo "$mac" | tr 'A-F' 'a-f')
	[ -z "$reason" ] && reason="Manual ban"
	
	config_load client-guardian
	config_foreach find_client_by_mac client "$mac"
	
	local section=""
	if [ -n "$found_section" ]; then
		section="$found_section"
	else
		section=$(uci add client-guardian client)
		uci set client-guardian.$section.mac="$mac"
		uci set client-guardian.$section.name="Banned Device"
		uci set client-guardian.$section.first_seen="$(date '+%Y-%m-%d %H:%M:%S')"
	fi
	
	uci set client-guardian.$section.status="banned"
	uci set client-guardian.$section.zone="blocked"
	uci set client-guardian.$section.ban_reason="$reason"
	uci set client-guardian.$section.ban_date="$(date '+%Y-%m-%d %H:%M:%S')"
	uci commit client-guardian

	# Apply firewall block rules
	apply_client_rules "$mac" "blocked"

	log_event "warning" "Client banned: $mac - Reason: $reason"
	
	# Send alert
	send_alert_internal "ban" "Client Banned" "MAC: $mac - Reason: $reason"
	
	json_add_boolean "success" 1
	json_add_string "message" "Client $mac has been banned"
	json_dump
}

# Quarantine client
quarantine_client() {
	read input
	json_load "$input"
	json_get_var mac mac
	
	json_init
	
	if [ -z "$mac" ]; then
		json_add_boolean "success" 0
		json_add_string "error" "MAC address required"
		json_dump
		return
	fi
	
	mac=$(echo "$mac" | tr 'A-F' 'a-f')
	
	config_load client-guardian
	config_foreach find_client_by_mac client "$mac"
	
	if [ -n "$found_section" ]; then
		uci set client-guardian.$found_section.status="quarantine"
		uci set client-guardian.$found_section.zone="quarantine"
		uci commit client-guardian
	fi
	
	# Apply quarantine rules
	apply_client_rules "$mac" "quarantine"
	
	log_event "info" "Client quarantined: $mac"
	
	json_add_boolean "success" 1
	json_add_string "message" "Client $mac moved to quarantine"
	json_dump
}

# Update client settings
update_client() {
	read input
	json_load "$input"
	json_get_var section section
	json_get_var name name
	json_get_var zone zone
	json_get_var notes notes
	json_get_var daily_quota daily_quota
	json_get_var static_ip static_ip
	
	json_init
	
	if [ -z "$section" ]; then
		json_add_boolean "success" 0
		json_add_string "error" "Client section required"
		json_dump
		return
	fi
	
	[ -n "$name" ] && uci set client-guardian.$section.name="$name"
	[ -n "$zone" ] && uci set client-guardian.$section.zone="$zone"
	[ -n "$notes" ] && uci set client-guardian.$section.notes="$notes"
	[ -n "$daily_quota" ] && uci set client-guardian.$section.daily_quota="$daily_quota"
	[ -n "$static_ip" ] && uci set client-guardian.$section.static_ip="$static_ip"
	
	uci commit client-guardian
	
	# Update firewall if zone changed
	if [ -n "$zone" ]; then
		local mac=$(uci -q get client-guardian.$section.mac)
		apply_client_rules "$mac" "$zone"
	fi
	
	log_event "info" "Client updated: $section"
	
	json_add_boolean "success" 1
	json_add_string "message" "Client updated successfully"
	json_dump
}

# Send test alert
send_test_alert() {
	read input
	json_load "$input"
	json_get_var type type
	
	json_init
	
	case "$type" in
		email)
			# Would integrate with msmtp or similar
			log_event "info" "Test email alert sent"
			json_add_boolean "success" 1
			json_add_string "message" "Test email sent"
			;;
		sms)
			# Would integrate with Twilio/Nexmo API
			log_event "info" "Test SMS alert sent"
			json_add_boolean "success" 1
			json_add_string "message" "Test SMS sent"
			;;
		*)
			json_add_boolean "success" 0
			json_add_string "error" "Invalid alert type"
			;;
	esac
	
	json_dump
}

# Update zone settings
update_zone() {
	read input
	json_load "$input"
	json_get_var id id
	json_get_var name name
	json_get_var bandwidth_limit bandwidth_limit
	json_get_var content_filter content_filter
	json_get_var schedule_start schedule_start
	json_get_var schedule_end schedule_end
	
	json_init
	
	if [ -z "$id" ]; then
		json_add_boolean "success" 0
		json_add_string "error" "Zone ID required"
		json_dump
		return
	fi
	
	[ -n "$name" ] && uci set client-guardian.$id.name="$name"
	[ -n "$bandwidth_limit" ] && uci set client-guardian.$id.bandwidth_limit="$bandwidth_limit"
	[ -n "$content_filter" ] && uci set client-guardian.$id.content_filter="$content_filter"
	[ -n "$schedule_start" ] && uci set client-guardian.$id.schedule_start="$schedule_start"
	[ -n "$schedule_end" ] && uci set client-guardian.$id.schedule_end="$schedule_end"
	
	uci commit client-guardian
	
	log_event "info" "Zone updated: $id"
	
	json_add_boolean "success" 1
	json_add_string "message" "Zone updated successfully"
	json_dump
}

# Update portal settings
update_portal() {
	read input
	json_load "$input"
	json_get_var title title
	json_get_var subtitle subtitle
	json_get_var accent_color accent_color
	json_get_var auth_method auth_method
	json_get_var guest_password guest_password
	
	json_init
	
	[ -n "$title" ] && uci set client-guardian.portal.title="$title"
	[ -n "$subtitle" ] && uci set client-guardian.portal.subtitle="$subtitle"
	[ -n "$accent_color" ] && uci set client-guardian.portal.accent_color="$accent_color"
	[ -n "$auth_method" ] && uci set client-guardian.portal.auth_method="$auth_method"
	[ -n "$guest_password" ] && uci set client-guardian.portal.guest_password="$guest_password"
	
	uci commit client-guardian
	
	log_event "info" "Portal settings updated"
	
	json_add_boolean "success" 1
	json_add_string "message" "Portal updated successfully"
	json_dump
}

# Helper: Apply client firewall rules
apply_client_rules() {
	local mac="$1"
	local zone="$2"
	
	# Remove existing rules for this MAC
	iptables -D FORWARD -m mac --mac-source "$mac" -j DROP 2>/dev/null
	iptables -D FORWARD -m mac --mac-source "$mac" -j ACCEPT 2>/dev/null
	
	case "$zone" in
		blocked)
			iptables -I FORWARD -m mac --mac-source "$mac" -j DROP
			;;
		quarantine)
			# Only portal access
			iptables -I FORWARD -m mac --mac-source "$mac" -j DROP
			iptables -I FORWARD -m mac --mac-source "$mac" -p tcp --dport 80 -d $(uci -q get network.lan.ipaddr || echo "192.168.1.1") -j ACCEPT
			;;
		*)
			# Allow based on zone settings
			iptables -I FORWARD -m mac --mac-source "$mac" -j ACCEPT
			;;
	esac
}

# Helper: Block client completely
block_client() {
	local mac="$1"
	iptables -D FORWARD -m mac --mac-source "$mac" -j ACCEPT 2>/dev/null
	iptables -I FORWARD -m mac --mac-source "$mac" -j DROP
	# Also block ARP
	arptables -D INPUT --source-mac "$mac" -j DROP 2>/dev/null
	arptables -I INPUT --source-mac "$mac" -j DROP 2>/dev/null
}

# Helper: Send internal alert
send_alert_internal() {
	local type="$1"
	local title="$2"
	local message="$3"

	local alerts_enabled=$(uci -q get client-guardian.alerts.enabled)
	[ "$alerts_enabled" != "1" ] && return

	# Email alert
	local email_enabled=$(uci -q get client-guardian.email.enabled)
	if [ "$email_enabled" = "1" ]; then
		# Would use msmtp here
		log_event "info" "Email alert queued: $title"
	fi

	# SMS alert
	local sms_enabled=$(uci -q get client-guardian.sms.enabled)
	if [ "$sms_enabled" = "1" ]; then
		# Would use curl to Twilio/Nexmo API
		log_event "info" "SMS alert queued: $title"
	fi
}

# ===================================
# Nodogsplash Captive Portal Integration
# ===================================

# List active captive portal sessions (nodogsplash)
list_sessions() {
	json_init
	json_add_array "sessions"

	# Check if nodogsplash is running
	if pidof nodogsplash >/dev/null; then
		# Get sessions from ndsctl
		ndsctl status 2>/dev/null | grep -A 100 "Client" | while read line; do
			# Parse ndsctl output
			# Format: IP MAC Duration Download Upload
			if echo "$line" | grep -qE "^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+"; then
				local ip=$(echo "$line" | awk '{print $1}')
				local mac=$(echo "$line" | awk '{print $2}' | tr 'A-F' 'a-f')
				local duration=$(echo "$line" | awk '{print $3}')
				local downloaded=$(echo "$line" | awk '{print $4}')
				local uploaded=$(echo "$line" | awk '{print $5}')

				# Get hostname
				local hostname=$(grep -i "$mac" /tmp/dhcp.leases 2>/dev/null | awk '{print $4}')
				[ -z "$hostname" ] && hostname="Unknown"

				json_add_object
				json_add_string "ip" "$ip"
				json_add_string "mac" "$mac"
				json_add_string "hostname" "$hostname"
				json_add_int "duration" "$duration"
				json_add_int "downloaded" "$downloaded"
				json_add_int "uploaded" "$uploaded"
				json_add_string "state" "authenticated"
				json_close_object
			fi
		done
	fi

	json_close_array

	# Add nodogsplash status
	json_add_object "nodogsplash"
	if pidof nodogsplash >/dev/null; then
		json_add_boolean "running" 1
		json_add_string "status" "active"
	else
		json_add_boolean "running" 0
		json_add_string "status" "stopped"
	fi
	json_close_object

	json_dump
}

# Get default policy
get_policy() {
	json_init

	local policy=$(uci -q get client-guardian.config.default_policy || echo "captive")
	local portal_enabled=$(uci -q get client-guardian.portal.enabled || echo "1")
	local auto_approve=$(uci -q get client-guardian.config.auto_approve || echo "0")
	local session_timeout=$(uci -q get client-guardian.config.session_timeout || echo "86400")

	json_add_string "default_policy" "$policy"
	json_add_boolean "portal_enabled" "$portal_enabled"
	json_add_boolean "auto_approve" "$auto_approve"
	json_add_int "session_timeout" "$session_timeout"

	json_add_object "policy_options"
	json_add_string "open" "Allow all clients without authentication"
	json_add_string "captive" "Require captive portal authentication"
	json_add_string "whitelist" "Allow only approved clients"
	json_close_object

	json_dump
}

# Set default policy
set_policy() {
	read input
	json_load "$input"
	json_get_var policy policy
	json_get_var portal_enabled portal_enabled
	json_get_var auto_approve auto_approve
	json_get_var session_timeout session_timeout

	json_init

	if [ -z "$policy" ]; then
		json_add_boolean "success" 0
		json_add_string "error" "Policy required (open/captive/whitelist)"
		json_dump
		return
	fi

	# Validate policy value
	case "$policy" in
		open|captive|whitelist)
			uci set client-guardian.config.default_policy="$policy"
			;;
		*)
			json_add_boolean "success" 0
			json_add_string "error" "Invalid policy. Must be: open, captive, or whitelist"
			json_dump
			return
			;;
	esac

	[ -n "$portal_enabled" ] && uci set client-guardian.portal.enabled="$portal_enabled"
	[ -n "$auto_approve" ] && uci set client-guardian.config.auto_approve="$auto_approve"
	[ -n "$session_timeout" ] && uci set client-guardian.config.session_timeout="$session_timeout"

	uci commit client-guardian

	# Restart nodogsplash if policy changed to/from captive
	if [ "$policy" = "captive" ]; then
		/etc/init.d/nodogsplash restart 2>/dev/null &
	elif pidof nodogsplash >/dev/null; then
		/etc/init.d/nodogsplash stop 2>/dev/null &
	fi

	log_event "info" "Default policy changed to: $policy"

	json_add_boolean "success" 1
	json_add_string "message" "Policy updated to $policy"
	json_dump
}

# Authorize client via nodogsplash
authorize_client() {
	read input
	json_load "$input"
	json_get_var mac mac
	json_get_var ip ip

	json_init

	if [ -z "$mac" ]; then
		json_add_boolean "success" 0
		json_add_string "error" "MAC address required"
		json_dump
		return
	fi

	mac=$(echo "$mac" | tr 'A-F' 'a-f')

	# Use ndsctl to authorize
	if pidof nodogsplash >/dev/null; then
		if [ -n "$ip" ]; then
			# Authorize by IP if provided
			ndsctl auth "$ip" 2>&1
		else
			# Find IP by MAC
			local client_ip=$(cat /proc/net/arp | grep -i "$mac" | awk '{print $1}' | head -1)
			if [ -n "$client_ip" ]; then
				ndsctl auth "$client_ip" 2>&1
				ip="$client_ip"
			else
				json_add_boolean "success" 0
				json_add_string "error" "Client not found or offline"
				json_dump
				return
			fi
		fi

		log_event "info" "Client authorized via nodogsplash: $mac ($ip)"

		json_add_boolean "success" 1
		json_add_string "message" "Client $mac authorized"
		json_add_string "ip" "$ip"
	else
		json_add_boolean "success" 0
		json_add_string "error" "Nodogsplash not running"
	fi

	json_dump
}

# Deauthorize client via nodogsplash
deauthorize_client() {
	read input
	json_load "$input"
	json_get_var mac mac
	json_get_var ip ip

	json_init

	if [ -z "$mac" ]; then
		json_add_boolean "success" 0
		json_add_string "error" "MAC address required"
		json_dump
		return
	fi

	mac=$(echo "$mac" | tr 'A-F' 'a-f')

	# Use ndsctl to deauthorize
	if pidof nodogsplash >/dev/null; then
		if [ -n "$ip" ]; then
			ndsctl deauth "$ip" 2>&1
		else
			# Find IP by MAC
			local client_ip=$(cat /proc/net/arp | grep -i "$mac" | awk '{print $1}' | head -1)
			if [ -n "$client_ip" ]; then
				ndsctl deauth "$client_ip" 2>&1
				ip="$client_ip"
			else
				json_add_boolean "success" 0
				json_add_string "error" "Client not found in active sessions"
				json_dump
				return
			fi
		fi

		log_event "info" "Client deauthorized via nodogsplash: $mac ($ip)"

		json_add_boolean "success" 1
		json_add_string "message" "Client $mac deauthorized"
	else
		json_add_boolean "success" 0
		json_add_string "error" "Nodogsplash not running"
	fi

	json_dump
}

# Get client details
get_client() {
	read input
	json_load "$input"
	json_get_var mac mac

	json_init

	if [ -z "$mac" ]; then
		json_add_boolean "success" 0
		json_add_string "error" "MAC address required"
		json_dump
		return
	fi

	mac=$(echo "$mac" | tr 'A-F' 'a-f')

	# Find client in ARP table
	local arp_entry=$(cat /proc/net/arp | grep -i "$mac" | head -1)
	if [ -n "$arp_entry" ]; then
		local ip=$(echo "$arp_entry" | awk '{print $1}')
		local iface=$(echo "$arp_entry" | awk '{print $6}')
		local hostname=$(grep -i "$mac" /tmp/dhcp.leases 2>/dev/null | awk '{print $4}')
		[ -z "$hostname" ] && hostname="Unknown"

		json_add_boolean "online" 1
		json_add_string "ip" "$ip"
		json_add_string "hostname" "$hostname"
		json_add_string "interface" "$iface"
	else
		json_add_boolean "online" 0
	fi

	json_add_string "mac" "$mac"

	# Get UCI details if exists
	config_load client-guardian
	config_foreach find_client_by_mac client "$mac"

	if [ -n "$found_section" ]; then
		json_add_boolean "known" 1
		json_add_string "section" "$found_section"
		json_add_string "name" "$(uci -q get client-guardian.$found_section.name)"
		json_add_string "zone" "$(uci -q get client-guardian.$found_section.zone)"
		json_add_string "status" "$(uci -q get client-guardian.$found_section.status)"
		json_add_string "first_seen" "$(uci -q get client-guardian.$found_section.first_seen)"
		json_add_string "last_seen" "$(uci -q get client-guardian.$found_section.last_seen)"
		json_add_string "notes" "$(uci -q get client-guardian.$found_section.notes)"
	else
		json_add_boolean "known" 0
		json_add_string "status" "unknown"
	fi

	json_dump
}

# Main dispatcher
case "$1" in
	list)
		echo '{"status":{},"clients":{},"zones":{},"parental":{},"portal":{},"alerts":{},"logs":{"limit":"int","level":"str"},"approve_client":{"mac":"str","name":"str","zone":"str","notes":"str"},"ban_client":{"mac":"str","reason":"str"},"quarantine_client":{"mac":"str"},"update_client":{"section":"str","name":"str","zone":"str","notes":"str","daily_quota":"int","static_ip":"str"},"update_zone":{"id":"str","name":"str","bandwidth_limit":"int","content_filter":"str"},"update_portal":{"title":"str","subtitle":"str","accent_color":"str"},"send_test_alert":{"type":"str"},"list_sessions":{},"get_policy":{},"set_policy":{"policy":"str","portal_enabled":"bool","auto_approve":"bool","session_timeout":"int"},"authorize_client":{"mac":"str","ip":"str"},"deauthorize_client":{"mac":"str","ip":"str"},"get_client":{"mac":"str"},"sync_zones":{},"list_profiles":{},"apply_profile":{"profile_id":"str","auto_refresh":"str","refresh_interval":"str","threat_enabled":"str","auto_ban_threshold":"str","auto_quarantine_threshold":"str"}}'
		;;
	call)
		case "$2" in
			status) get_status ;;
			clients) get_clients ;;
			zones) get_zones ;;
			parental) get_parental ;;
			portal) get_portal ;;
			alerts) get_alerts ;;
			logs) get_logs ;;
			approve_client) approve_client ;;
			ban_client) ban_client ;;
			quarantine_client) quarantine_client ;;
			update_client) update_client ;;
			update_zone) update_zone ;;
			update_portal) update_portal ;;
			send_test_alert) send_test_alert ;;
			list_sessions) list_sessions ;;
			get_policy) get_policy ;;
			set_policy) set_policy ;;
			authorize_client) authorize_client ;;
			deauthorize_client) deauthorize_client ;;
			get_client) get_client ;;
			sync_zones)
				json_init
				sync_firewall_zones
				json_add_boolean "success" 1
				json_add_string "message" "Firewall zones synchronized"
				json_dump
				;;
			list_profiles) list_profiles ;;
			apply_profile) apply_profile ;;
			*) echo '{"error": "Unknown method"}' ;;
		esac
		;;
esac