#!/bin/sh
# SecuBox Netifyd Plugin Setup
# Configures netify.ai repository and installs plugins
# Copyright (C) 2025 CyberMind.fr

NETIFY_FEED_FILE="/etc/opkg/customfeeds.conf"
NETIFY_KEY_URL="https://download.netify.ai/openwrt/netify-repo.pub"
NETIFY_KEY_FILE="/etc/opkg/keys/netify-repo.pub"

# Get OpenWrt version
get_openwrt_version() {
	if [ -f /etc/os-release ]; then
		. /etc/os-release
		echo "${VERSION_ID:-23.05}"
	else
		echo "23.05"
	fi
}

# Get architecture
get_arch() {
	local arch=$(uname -m)
	case "$arch" in
		x86_64) echo "x86_64" ;;
		aarch64) echo "aarch64_generic" ;;
		armv7l) echo "arm_cortex-a7" ;;
		mips*) echo "mips_24kc" ;;
		*) echo "$arch" ;;
	esac
}

# Check if architecture is supported by Netify
check_arch_supported() {
	local arch=$(uname -m)
	case "$arch" in
		x86_64|i686|i386)
			return 0
			;;
		*)
			return 1
			;;
	esac
}

# Add netify repository
add_netify_feed() {
	local version=$(get_openwrt_version)
	# Strip patch version (24.10.5 -> 24.10)
	version=$(echo "$version" | sed 's/\.[0-9]*$//')
	local arch=$(get_arch)

	echo "Checking Netify repository compatibility..."
	echo "  OpenWrt Version: $version"
	echo "  Architecture: $arch"

	if ! check_arch_supported; then
		echo ""
		echo "WARNING: Netify.ai only provides pre-built plugin packages for x86 architecture."
		echo "Your system is running: $(uname -m)"
		echo ""
		echo "Options:"
		echo "  1. Use netifyd without additional plugins (basic DPI still works)"
		echo "  2. Build plugins from source (requires SDK)"
		echo "  3. Use netifyd's built-in flow sink for local export"
		echo ""
		echo "The base netifyd package from OpenWrt includes DPI capabilities."
		echo "Configure flow export in LuCI > SecuBox > Netifyd > Settings > Flow Sink"
		return 1
	fi

	local feed_url="https://download.netify.ai/5/openwrt/${version}/x86"

	echo "  Feed URL: $feed_url"

	# Check if feed already exists
	if grep -q "download.netify.ai" "$NETIFY_FEED_FILE" 2>/dev/null; then
		echo "Netify feed already configured"
	else
		echo "src/gz netify $feed_url" >> "$NETIFY_FEED_FILE"
		echo "Feed added to $NETIFY_FEED_FILE"
	fi

	# Download signing key
	mkdir -p "$(dirname "$NETIFY_KEY_FILE")"
	if [ ! -f "$NETIFY_KEY_FILE" ]; then
		echo "Downloading Netify signing key..."
		wget -q -O "$NETIFY_KEY_FILE" "$NETIFY_KEY_URL" 2>/dev/null || \
			curl -s -o "$NETIFY_KEY_FILE" "$NETIFY_KEY_URL" 2>/dev/null
		if [ -f "$NETIFY_KEY_FILE" ]; then
			echo "Signing key installed"
		else
			echo "Warning: Could not download signing key"
		fi
	fi

	# Update package lists
	echo "Updating package lists..."
	opkg update
}

# List available plugins
list_plugins() {
	echo "Available Netifyd Plugins:"
	echo ""
	echo "  Processor Plugins:"
	echo "    netify-proc-core          - Core processor (required for plugins)"
	echo "    netify-proc-flow-actions  - Flow action rules (block, mark, ipset)"
	echo "    netify-proc-device-discovery - Device identification"
	echo ""
	echo "  Sink Plugins:"
	echo "    netify-sink-socket        - Export to Unix/TCP socket"
	echo "    netify-sink-http          - Export to HTTP endpoint"
	echo "    netify-sink-mqtt          - Export to MQTT broker"
	echo "    netify-sink-log           - Export to log files"
	echo ""
	echo "  Use: $0 install <plugin-name>"
}

# Install plugin
install_plugin() {
	local plugin="$1"
	if [ -z "$plugin" ]; then
		echo "Error: Plugin name required"
		list_plugins
		return 1
	fi

	if ! check_arch_supported; then
		echo "ERROR: Plugin packages are not available for your architecture ($(uname -m))"
		echo ""
		echo "Netify.ai only provides pre-built packages for x86 systems."
		echo ""
		echo "Alternative: Use netifyd's built-in flow export feature:"
		echo "  1. Go to LuCI > SecuBox > Netifyd > Settings"
		echo "  2. Enable 'Flow Sink' and configure export"
		echo "  3. The flow data includes application detection"
		echo ""
		echo "The base netifyd from OpenWrt provides DPI without extra plugins."
		return 1
	fi

	echo "Installing $plugin..."
	opkg install "$plugin"
	local rc=$?

	if [ $rc -eq 0 ]; then
		echo "Plugin $plugin installed successfully"
		echo "Restarting netifyd..."
		/etc/init.d/netifyd restart
	else
		echo "Failed to install $plugin"
		echo "Make sure the Netify feed is configured: $0 add-feed"
	fi

	return $rc
}

# Check installed plugins
check_plugins() {
	echo "Checking installed Netifyd plugins..."
	echo ""

	local plugin_dir="/usr/lib/netifyd"
	if [ -d "$plugin_dir" ]; then
		echo "Plugin libraries in $plugin_dir:"
		ls -la "$plugin_dir"/*.so 2>/dev/null || echo "  (none found)"
	else
		echo "Plugin directory not found: $plugin_dir"
	fi

	echo ""
	echo "Installed netify packages:"
	opkg list-installed | grep -i netif
}

# Create ipsets for plugins
create_ipsets() {
	echo "Creating ipsets for plugins..."

	# BitTorrent ipset
	if ! ipset list secubox-bittorrent >/dev/null 2>&1; then
		ipset create secubox-bittorrent hash:ip timeout 900
		echo "Created ipset: secubox-bittorrent"
	else
		echo "Ipset secubox-bittorrent already exists"
	fi

	# Banned IPs ipset
	if ! ipset list secubox-banned >/dev/null 2>&1; then
		ipset create secubox-banned hash:ip timeout 3600
		echo "Created ipset: secubox-banned"
	else
		echo "Ipset secubox-banned already exists"
	fi

	# Streaming services ipset
	if ! ipset list secubox-streaming >/dev/null 2>&1; then
		ipset create secubox-streaming hash:ip timeout 1800
		echo "Created ipset: secubox-streaming"
	else
		echo "Ipset secubox-streaming already exists"
	fi

	echo "Ipsets ready"
}

# Setup nftables chain for plugins
setup_nftables() {
	echo "Setting up nftables chain for plugins..."

	# Create secubox table and chain if not exists
	nft list table inet secubox >/dev/null 2>&1 || {
		nft add table inet secubox
		echo "Created table: inet secubox"
	}

	nft list chain inet secubox flow_actions >/dev/null 2>&1 || {
		nft add chain inet secubox flow_actions
		echo "Created chain: inet secubox flow_actions"
	}

	echo "nftables setup complete"
}

# Show usage
usage() {
	echo "SecuBox Netifyd Plugin Setup"
	echo ""
	echo "Usage: $0 <command> [options]"
	echo ""
	echo "Commands:"
	echo "  add-feed          Add Netify.ai package repository"
	echo "  list              List available plugins"
	echo "  install <plugin>  Install a plugin package"
	echo "  check             Check installed plugins"
	echo "  create-ipsets     Create ipsets for flow plugins"
	echo "  setup-nftables    Setup nftables chain for plugins"
	echo "  init              Full initialization (feed + ipsets + nftables)"
	echo ""
	echo "Examples:"
	echo "  $0 add-feed"
	echo "  $0 install netify-proc-flow-actions"
	echo "  $0 init"
}

# Main
case "$1" in
	add-feed)
		add_netify_feed
		;;
	list)
		list_plugins
		;;
	install)
		install_plugin "$2"
		;;
	check)
		check_plugins
		;;
	create-ipsets)
		create_ipsets
		;;
	setup-nftables)
		setup_nftables
		;;
	init)
		add_netify_feed
		create_ipsets
		setup_nftables
		echo ""
		echo "Initialization complete. Install plugins with:"
		echo "  $0 install netify-proc-flow-actions"
		;;
	*)
		usage
		;;
esac