# Variables  
$resourceGroupName = "mynewresourcegroup"  
$location = "CentralIndia"  
$vmName = "myVM"  
$vmSize = "Standard_B2ms"  
$adminUsername = "totu13487"  
$adminPassword = "Papamami@220419"  
$vnetName = "myVNet"  
$subnetName = "mySubnet"  
$nicName = "myNIC"  

# Import the Az module  
Import-Module Az  

# Login to Azure using default credentials (prompt)  
Connect-AzAccount  

# List available subscriptions to verify access and correctness  
$subscriptions = Get-AzSubscription  
$subscriptions | Format-Table -Property SubscriptionName, SubscriptionId  

# Set the context to the desired subscription  
$subscriptionId = "9896b81a-ef21-45ad-8577-f6adde85abea"  
try {  
    Select-AzSubscription -SubscriptionId $subscriptionId  
    Write-Host "Switched to subscription: $subscriptionId"  
} catch {  
    Write-Host "Failed to select subscription: $_" -ForegroundColor Red  
    exit  
}  

# Create or Get Resource Group  
if (-not (Get-AzResourceGroup -Name $resourceGroupName -ErrorAction SilentlyContinue)) {  
    New-AzResourceGroup -Name $resourceGroupName -Location $location  
    Write-Host "Created Resource Group: $resourceGroupName"  
} else {  
    Write-Host "Resource Group $resourceGroupName already exists."  
}  

# Check if VNet already exists  
$vnet = Get-AzVirtualNetwork -ResourceGroupName $resourceGroupName -Name $vnetName -ErrorAction SilentlyContinue  
if (-not $vnet) {  
    # Create Virtual Network if it doesn't exist  
    $vnet = New-AzVirtualNetwork -ResourceGroupName $resourceGroupName -Location $location -Name $vnetName -AddressPrefix "10.0.0.0/16"  
    Write-Host "Virtual Network $vnetName created."  
} else {  
    Write-Host "Virtual Network $vnetName already exists."  
}  

# Check if Subnet already exists  
$subnet = Get-AzVirtualNetworkSubnetConfig -VirtualNetwork $vnet -Name $subnetName -ErrorAction SilentlyContinue  
if (-not $subnet) {  
    # Create Subnet if it doesn't exist  
    $subnet = Add-AzVirtualNetworkSubnetConfig -Name $subnetName -AddressPrefix "10.0.0.0/24" -VirtualNetwork $vnet  
    # Update the Virtual Network to save the subnet  
    $vnet | Set-AzVirtualNetwork  
    Write-Host "Subnet $subnetName created."  
} else {  
    Write-Host "Subnet $subnetName already exists."  
}  

# Create or Get Network Interface  
$nic = Get-AzNetworkInterface -ResourceGroupName $resourceGroupName -Name $nicName -ErrorAction SilentlyContinue  
if (-not $nic) {  
    $nic = New-AzNetworkInterface -ResourceGroupName $resourceGroupName -Location $location -Name $nicName -SubnetId $subnet.Id  
    Write-Host "Network Interface $nicName created."  
} else {  
    Write-Host "Network Interface $nicName already exists."  
}  

# Secure Password  
$securePassword = ConvertTo-SecureString $adminPassword -AsPlainText -Force  
$cred = New-Object System.Management.Automation.PSCredential ($adminUsername, $securePassword)  

# Create VM Configuration   
$vmConfig = New-AzVMConfig -VMName $vmName -VMSize $vmSize   

# Add Network Interface  
$vmConfig = Add-AzVMNetworkInterface -VM $vmConfig -Id $nic.Id   

# Set Operating System for the VM  
$vmConfig = Set-AzVMOperatingSystem -VM $vmConfig -Windows -ComputerName $vmName -Credential $cred -ProvisionVMAgent -EnableAutoUpdate  

# Add Operating System Image  
$vmConfig = Set-AzVMSourceImage -VM $vmConfig -PublisherName "MicrosoftWindowsServer" -Offer "WindowsServer" -Skus "2019-Datacenter" -Version "latest"  

# Create the VM  
try {  
    New-AzVM -ResourceGroupName $resourceGroupName -Location $location -VM $vmConfig -Debug  
    Write-Host "VM $vmName created successfully in resource group $resourceGroupName!"  
} catch {  
    Write-Host "Failed to create VM: $_" -ForegroundColor Red  
}