# Resource Monitor Service - Remote VM Deployment Script
# Deploys the packaged service to a remote VM

param(
    [Parameter(Mandatory=$true)]
    [string]$VMAddress,
    
    [Parameter(Mandatory=$false)]
    [string]$Username,
    
    [Parameter(Mandatory=$false)]
    [string]$PackagePath,
    
    [switch]$UseWinRM,
    [switch]$CopyOnly
)

Write-Host "=== Resource Monitor Service - Remote VM Deployment ===" -ForegroundColor Cyan
Write-Host

# Find the latest package if not specified
if (-not $PackagePath) {
    $latestPackage = Get-ChildItem -Path ".\release-packages\ResourceMonitorService-v*.zip" | Sort-Object LastWriteTime -Descending | Select-Object -First 1
    if ($latestPackage) {
        $PackagePath = $latestPackage.FullName
        Write-Host "Using latest package: $($latestPackage.Name)" -ForegroundColor Green
    } else {
        Write-Host "✗ No packages found. Run .\package-release.ps1 first" -ForegroundColor Red
        exit 1
    }
}

if (-not (Test-Path $PackagePath)) {
    Write-Host "✗ Package not found: $PackagePath" -ForegroundColor Red
    exit 1
}

$packageName = [System.IO.Path]::GetFileNameWithoutExtension($PackagePath)
Write-Host "Package: $packageName" -ForegroundColor White
Write-Host "Target VM: $VMAddress" -ForegroundColor White
Write-Host

if ($UseWinRM) {
    Write-Host "Using WinRM for deployment..." -ForegroundColor Yellow
    
    # Test WinRM connection
    Write-Host "Testing WinRM connection to $VMAddress..." -ForegroundColor Yellow
    try {
        $session = New-PSSession -ComputerName $VMAddress -Credential (Get-Credential -Message "Enter credentials for $VMAddress")
        Write-Host "✓ WinRM connection successful" -ForegroundColor Green
    } catch {
        Write-Host "✗ WinRM connection failed: $($_.Exception.Message)" -ForegroundColor Red
        Write-Host "Make sure WinRM is enabled on the target VM:" -ForegroundColor Yellow
        Write-Host "  winrm quickconfig" -ForegroundColor Gray
        Write-Host "  Enable-PSRemoting -Force" -ForegroundColor Gray
        exit 1
    }
    
    # Copy package to VM
    Write-Host "Copying package to VM..." -ForegroundColor Yellow
    try {
        $remoteTemp = "C:\Temp\$packageName"
        Invoke-Command -Session $session -ScriptBlock {
            param($remotePath)
            if (Test-Path $remotePath) { Remove-Item $remotePath -Recurse -Force }
            New-Item -ItemType Directory -Path $remotePath -Force | Out-Null
        } -ArgumentList $remoteTemp
        
        Copy-Item -Path $PackagePath -Destination "$remoteTemp.zip" -ToSession $session
        Write-Host "✓ Package copied to $remoteTemp.zip" -ForegroundColor Green
    } catch {
        Write-Host "✗ Failed to copy package: $($_.Exception.Message)" -ForegroundColor Red
        exit 1
    }
    
    if (-not $CopyOnly) {
        # Extract and install on VM
        Write-Host "Extracting and installing on VM..." -ForegroundColor Yellow
        try {
            $installResult = Invoke-Command -Session $session -ScriptBlock {
                param($remotePath, $packageName)
                
                # Extract package
                Expand-Archive -Path "$remotePath.zip" -DestinationPath $remotePath -Force
                Set-Location $remotePath
                
                # Run installation
                $installOutput = & ".\install-service.ps1" 2>&1
                return @{
                    Success = $LASTEXITCODE -eq 0
                    Output = $installOutput -join "`n"
                    ExitCode = $LASTEXITCODE
                }
            } -ArgumentList $remoteTemp, $packageName
            
            if ($installResult.Success) {
                Write-Host "✓ Installation completed successfully!" -ForegroundColor Green
                Write-Host "Web Dashboard: http://$VMAddress:5000" -ForegroundColor Cyan
            } else {
                Write-Host "✗ Installation failed (Exit Code: $($installResult.ExitCode))" -ForegroundColor Red
                Write-Host "Output:" -ForegroundColor Yellow
                Write-Host $installResult.Output -ForegroundColor Gray
            }
        } catch {
            Write-Host "✗ Installation failed: $($_.Exception.Message)" -ForegroundColor Red
        }
    }
    
    # Clean up session
    Remove-PSSession $session
    
} else {
    # Manual deployment instructions
    Write-Host "Manual Deployment Instructions:" -ForegroundColor Yellow
    Write-Host
    Write-Host "1. Copy the package to your VM:" -ForegroundColor White
    Write-Host "   - Use RDP, shared folders, or network copy" -ForegroundColor Gray
    Write-Host "   - Package location: $PackagePath" -ForegroundColor Gray
    Write-Host
    Write-Host "2. On the VM, extract the ZIP file to a temporary directory" -ForegroundColor White
    Write-Host
    Write-Host "3. Open PowerShell as Administrator and navigate to the extracted directory" -ForegroundColor White
    Write-Host
    Write-Host "4. Run the installation:" -ForegroundColor White
    Write-Host "   .\install-service.ps1" -ForegroundColor Cyan
    Write-Host "   OR" -ForegroundColor Gray
    Write-Host "   .\INSTALL.bat" -ForegroundColor Cyan
    Write-Host
    Write-Host "5. Access the web dashboard:" -ForegroundColor White
    Write-Host "   http://$VMAddress:5000" -ForegroundColor Cyan
    Write-Host
    Write-Host "Alternative deployment methods:" -ForegroundColor Yellow
    Write-Host "  PowerShell Remoting: .\deploy-to-vm.ps1 -VMAddress $VMAddress -UseWinRM" -ForegroundColor Gray
    Write-Host "  Copy only: .\deploy-to-vm.ps1 -VMAddress $VMAddress -UseWinRM -CopyOnly" -ForegroundColor Gray
}

Write-Host
Write-Host "=== Deployment Script Complete ===" -ForegroundColor Cyan