# Check server network connectivity
param(
    [string]$Server = "45.249.208.118",
    [string]$User = "root",
    [string]$Password = "lxvhNYFZ4160"
)

$ErrorActionPreference = "Stop"
Write-Host "Checking server network connectivity..." -ForegroundColor Cyan

$plinkPath = "C:\Program Files\PuTTY\plink.exe"

if (-not (Test-Path $plinkPath)) {
    Write-Host "Error: plink.exe not found" -ForegroundColor Red
    exit 1
}

Write-Host "`n[1/5] Testing basic internet connectivity..." -ForegroundColor Yellow
$pingResult = & $plinkPath -ssh -pw $Password -batch "${User}@${Server}" "ping -c 2 8.8.8.8 2>&1"
Write-Host $pingResult

Write-Host "`n[2/5] Testing DNS resolution..." -ForegroundColor Yellow
$dnsResult = & $plinkPath -ssh -pw $Password -batch "${User}@${Server}" "nslookup registry-1.docker.io 2>&1"
Write-Host $dnsResult

Write-Host "`n[3/5] Testing HTTPS connectivity to Docker Hub..." -ForegroundColor Yellow
$httpsResult = & $plinkPath -ssh -pw $Password -batch "${User}@${Server}" "curl -I https://registry-1.docker.io/v2/ --max-time 10 2>&1 | head -5"
Write-Host $httpsResult

Write-Host "`n[4/5] Checking Docker proxy settings..." -ForegroundColor Yellow
$proxyResult = & $plinkPath -ssh -pw $Password -batch "${User}@${Server}" "docker info 2>&1 | grep -i proxy"
Write-Host $proxyResult

Write-Host "`n[5/5] Checking system proxy environment variables..." -ForegroundColor Yellow
$envProxy = & $plinkPath -ssh -pw $Password -batch "${User}@${Server}" "env | grep -i proxy"
Write-Host $envProxy

Write-Host "`n=== Analysis ===" -ForegroundColor Cyan
Write-Host "If all tests fail, the server may:" -ForegroundColor Yellow
Write-Host "1. Have no internet access" -ForegroundColor White
Write-Host "2. Be behind a firewall that blocks Docker Hub" -ForegroundColor White
Write-Host "3. Require a proxy to access external services" -ForegroundColor White
Write-Host "`nAlternative solutions:" -ForegroundColor Cyan
Write-Host "1. Export image from local machine and upload to server" -ForegroundColor Green
Write-Host "2. Configure Docker to use a proxy" -ForegroundColor Green
Write-Host "3. Use a local registry or private mirror" -ForegroundColor Green