Remove-AzureDtlVM.ps1

<#
.SYNOPSIS 
    This script deletes every Azure virtual machines in the DevTest Lab.

.DESCRIPTION
    This script deletes every Azure virtual machines in the DevTest Lab. It will
    process all VMs in parallel divided into blocks.

.PARAMETER LabName
    Mandatory. The name of the Dev Test Lab to clean up.

.PARAMETER profilePath
    Optional. Path to file with Azure Profile. How to generate this file is explained at the end of the Readme for the repo (https://github.com/lucabol/University).
    Default "$env:APPDATA\AzProfile.txt".

.PARAMETER batchSize
    Optional. How many VMs to delete in parallel
    Default is 10.

.EXAMPLE
    Remove-AzureDtlVM -LabName University -batchSize 30

.EXAMPLE
    Remove-AzureDtlVM -LabName University -profilePath "c:\AzProfile.txt"

.EXAMPLE
    Remove-AzureDtlVM -LabName University

.NOTES

#>
[cmdletbinding()]
param
(
    [Parameter(Mandatory = $true, HelpMessage = "The name of the Dev Test Lab to clean up")]
    [string] $LabName,

    [Parameter(Mandatory = $false, HelpMessage = "Path to file with Azure Profile")]
    [string] $profilePath = "$env:APPDATA\AzProfile.txt",

    [Parameter(Mandatory = $false, HelpMessage = "How many VMs to delete in parallel")]
    [string] $batchSize = 10
    
)

trap {
    # NOTE: This trap will handle all errors. There should be no need to use a catch below in this
    #       script, unless you want to ignore a specific error.
    Handle-LastError
}

. .\Common.ps1

#### Main script

try {
    LogOutput "Start Removal"

    $credentialsKind = InferCredentials
    LogOutput "Credentials: $credentialsKind"

    LoadAzureCredentials -credentialsKind $credentialsKind -profilePath $profilePath

    $ResourceGroupName = GetResourceGroupName -labname $LabName
    LogOutput "Resource Group: $ResourceGroupName"

    [array] $allVms = GetAllLabVMs -labname $LabName

    RemoveBatchVms -vms $allVms -batchSize $batchSize -credentialsKind $credentialsKind -profilePath $profilePath

    LogOutput "Deleted $($allVms.Count) VMs"
    LogOutput "All Done"

} finally {
    if ($credentialsKind -eq "File") {
        1..3 | % { [console]::beep(2500, 300) } # Make a sound to indicate we're done.
    }
    popd
}