# Configure OpenWrt Network Stack
# This script provides instructions and automation for OpenWrt VM network configuration

param(
    [string]$OpenWrtIP = "10.10.60.100",
    [string]$OpenWrtUser = "root",
    [string]$ConfigFile = "openwrt-config.tar.gz"
)

$ErrorActionPreference = "Stop"

Write-Host "=========================================" -ForegroundColor Cyan
Write-Host "OpenWrt Network Configuration" -ForegroundColor Cyan
Write-Host "=========================================" -ForegroundColor Cyan

Write-Host "`nThis script helps configure OpenWrt VM for network routing and VLAN management." -ForegroundColor Yellow
Write-Host "OpenWrt should be deployed as a VM on the Router server." -ForegroundColor Yellow

# Check if OpenWrt is accessible
Write-Host "`nChecking OpenWrt connectivity..." -ForegroundColor Yellow
try {
    $ping = Test-Connection -ComputerName $OpenWrtIP -Count 1 -Quiet
    if ($ping) {
        Write-Host "OpenWrt is reachable at $OpenWrtIP" -ForegroundColor Green
    }
    else {
        Write-Host "OpenWrt is not reachable at $OpenWrtIP" -ForegroundColor Red
        Write-Host "Please ensure OpenWrt VM is running and accessible." -ForegroundColor Yellow
        exit 1
    }
}
catch {
    Write-Host "Cannot reach OpenWrt. Please verify:" -ForegroundColor Red
    Write-Host "  1. OpenWrt VM is running" -ForegroundColor White
    Write-Host "  2. IP address is correct: $OpenWrtIP" -ForegroundColor White
    Write-Host "  3. Network connectivity exists" -ForegroundColor White
    exit 1
}

Write-Host "`nOpenWrt Configuration Steps:" -ForegroundColor Cyan
Write-Host "1. SSH to OpenWrt: ssh $OpenWrtUser@$OpenWrtIP" -ForegroundColor White
Write-Host "2. Configure network interfaces" -ForegroundColor White
Write-Host "3. Configure VLANs" -ForegroundColor White
Write-Host "4. Configure firewall zones" -ForegroundColor White
Write-Host "5. Configure mwan3 for multi-WAN" -ForegroundColor White

Write-Host "`nExample OpenWrt network configuration:" -ForegroundColor Yellow
$openWrtConfig = @"
# /etc/config/network

config interface 'loopback'
    option ifname 'lo'
    option proto 'static'
    option ipaddr '127.0.0.1'
    option netmask '255.0.0.0'

# WAN interfaces (i350-T4)
config interface 'wan1'
    option ifname 'eth1'
    option proto 'dhcp'
    option metric '10'

config interface 'wan2'
    option ifname 'eth2'
    option proto 'dhcp'
    option metric '20'

config interface 'wan3'
    option ifname 'eth3'
    option proto 'dhcp'
    option metric '30'

config interface 'wan4'
    option ifname 'eth4'
    option proto 'dhcp'
    option metric '40'

# LAN interfaces with VLANs
config interface 'lan'
    option type 'bridge'
    option ifname 'eth0'
    option proto 'static'
    option ipaddr '10.10.60.1'
    option netmask '255.255.255.0'

# VLAN 10 - Storage
config interface 'vlan10'
    option ifname 'eth0.10'
    option proto 'static'
    option ipaddr '10.10.10.1'
    option netmask '255.255.255.0'

# VLAN 20 - Compute
config interface 'vlan20'
    option ifname 'eth0.20'
    option proto 'static'
    option ipaddr '10.10.20.1'
    option netmask '255.255.255.0'

# VLAN 30 - App Tier
config interface 'vlan30'
    option ifname 'eth0.30'
    option proto 'static'
    option ipaddr '10.10.30.1'
    option netmask '255.255.255.0'

# VLAN 40 - Observability
config interface 'vlan40'
    option ifname 'eth0.40'
    option proto 'static'
    option ipaddr '10.10.40.1'
    option netmask '255.255.255.0'

# VLAN 50 - Dev/Test
config interface 'vlan50'
    option ifname 'eth0.50'
    option proto 'static'
    option ipaddr '10.10.50.1'
    option netmask '255.255.255.0'

# VLAN 60 - Management
config interface 'vlan60'
    option ifname 'eth0.60'
    option proto 'static'
    option ipaddr '10.10.60.1'
    option netmask '255.255.255.0'

# VLAN 99 - DMZ
config interface 'vlan99'
    option ifname 'eth0.99'
    option proto 'static'
    option ipaddr '10.10.99.1'
    option netmask '255.255.255.0'
"@

Write-Host $openWrtConfig -ForegroundColor Gray

Write-Host "`nTo apply configuration:" -ForegroundColor Yellow
Write-Host "1. Copy configuration to OpenWrt" -ForegroundColor White
Write-Host "2. Edit /etc/config/network on OpenWrt" -ForegroundColor White
Write-Host "3. Run: /etc/init.d/network reload" -ForegroundColor White

Write-Host "`nFor automated configuration, use SSH to push config:" -ForegroundColor Yellow
Write-Host "  ssh $OpenWrtUser@$OpenWrtIP 'cat > /etc/config/network' < network-config.txt" -ForegroundColor White

Write-Host "`nNext Steps:" -ForegroundColor Cyan
Write-Host "1. Run setup-mwan3.ps1 for multi-WAN configuration" -ForegroundColor White
Write-Host "2. Run configure-vlans.ps1 for VLAN setup" -ForegroundColor White
Write-Host "3. Run setup-firewall-zones.ps1 for firewall rules" -ForegroundColor White

Write-Host "`n=========================================" -ForegroundColor Cyan
Write-Host "OpenWrt Network Configuration Complete" -ForegroundColor Cyan
Write-Host "=========================================" -ForegroundColor Cyan