# Push Docker image to Gitea over LAN (avoids KeenDNS hairpin slow upload).
param(
    [string[]]$Tags = @('latest'),
    [switch]$SkipHosts
)

$ErrorActionPreference = "Stop"
$Registry = "gitea.mysuperlab.netcraze.pro"
$LanIp = "192.168.10.122"
$Image = "$Registry/danilka/gallery-web"
$HostsPath = "$env:SystemRoot\System32\drivers\etc\hosts"
$HostsMarker = "# gallery-gitea-lan-push"

function Test-Admin {
    $current = [Security.Principal.WindowsPrincipal][Security.Principal.WindowsIdentity]::GetCurrent()
    return $current.IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)
}

function Get-GiteaDnsAddress {
    try {
        return [System.Net.Dns]::GetHostAddresses($Registry) |
            Where-Object { $_.AddressFamily -eq 'InterNetwork' } |
            Select-Object -First 1 -ExpandProperty IPAddressToString
    } catch {
        return $null
    }
}

Write-Host "=== Gitea LAN push ===" -ForegroundColor Cyan
$resolved = Get-GiteaDnsAddress
Write-Host "DNS resolves $Registry -> $resolved"
if ($resolved -and $resolved -ne $LanIp) {
    Write-Host "Public/hairpin path detected (slow push). LAN override recommended." -ForegroundColor Yellow
}

if (-not $SkipHosts) {
    $hostsContent = Get-Content $HostsPath -Raw -ErrorAction SilentlyContinue
    $hasEntry = $hostsContent -match "gitea\.mysuperlab\.netcraze\.pro"
    if (-not $hasEntry) {
        if (-not (Test-Admin)) {
            Write-Host ""
            Write-Host "Re-run as Administrator to add hosts entry, or add manually:" -ForegroundColor Yellow
            Write-Host "  $LanIp  $Registry"
            Write-Host "  Then: ipconfig /flushdns"
            exit 1
        }
        Add-Content -Path $HostsPath -Value "`n$HostsMarker`n$LanIp  $Registry" -Encoding ASCII
        ipconfig /flushdns | Out-Null
        Write-Host "Added hosts: $LanIp -> $Registry" -ForegroundColor Green
    } else {
        Write-Host "Hosts entry for gitea already present." -ForegroundColor Green
    }
}

$after = Get-GiteaDnsAddress
Write-Host "After override, resolves to: $after"

foreach ($tag in ($Tags | Select-Object -Unique)) {
    Write-Host ""
    Write-Host "Pushing ${Image}:$tag ..."
    docker push "${Image}:$tag"
    if ($LASTEXITCODE -ne 0) { exit $LASTEXITCODE }
}

Write-Host ""
Write-Host "Done. Remove hosts entry ($HostsMarker) when finished if you no longer need LAN override." -ForegroundColor Cyan