StartStopVM.ps1

Param(
    [Parameter(Mandatory=$true)]
    [String]
    $VirtualMachineName,
    [Parameter(Mandatory=$true)]
    [String]
    $ResourceGroupName,
    [Parameter(Mandatory=$true)]
    [Boolean]
    $Start
)

try
{
    # Supported days.
    $weekdays = @("Monday","Tuesday","Wednesday","Thursday","Friday")
 
    # Checks if current day is a supported day (Monday - Friday).
    If (-Not ($weekdays -contains (Get-Date).DayOfWeek))
    {
        Write-Output "Process stopped because current day is not supported."
        return
    }

    # Gets the connection AzureRunAsConnection
    $conn = Get-AutomationConnection -Name "AzureRunAsConnection"
 
    # Logs in to Azure.
    Write-Output "Logging in to Azure."
    Add-AzureRMAccount `
        -ServicePrincipal `
        -Tenant $conn.TenantID `
        -ApplicationID $conn.ApplicationID `
        -CertificateThumbprint $conn.CertificateThumbprint
    Write-Output "Successfully logged into Azure."

    Write-Output "Started getting vm with name: $($VirtualMachineName)"
    $vm = Get-AzureRmResource `
            -ResourceName $VirtualMachineName `
            -ResourceGroupName $ResourceGroupName `
            -ResourceType "Microsoft.Compute/virtualMachines"
 
    # Starts or stops vm depending on user input.      
    if($Start){
        Write-Output "Starting $($vm.Name)";      
        Start-AzureRmVm -Name $vm.Name -ResourceGroupName $vm.ResourceGroupName;
    }
    else{
        Write-Output "Stopping $($vm.Name)";      
        Stop-AzureRmVm -Name $vm.Name -ResourceGroupName $vm.ResourceGroupName -Force;
    }
}
catch {
    Write-Error -Message $_.Exception
    throw $_.Exception
}