RG-StartStopAllVMs.ps1

# Get the input request
$in = Get-Content $req -Raw | ConvertFrom-Json

write-output "====Mode====" $in.mode
write-output "==Resource Group==" $in.resourcegroup

# Application ID for our Azure Security Principal that we created and provided via Function Application Settings
$username = $env:AzureAutomationAppID
# Password for connection to Azure via Function Application Settings
$pw = $env:AzureAutomationPWD

# Credentials password (encrypted)
$keypath = 'D:\home\site\wwwroot\<YOURFUNCTIONAPP>\keys\AzureAutomationPassKey.key'
$password = $pw | ConvertTo-SecureString -key (Get-Content $keypath)

# Create PS Creds
$credentials = New-Object System.Management.Automation.PSCredential $username,$password

# Load the Invoke-Parallel Powershell Script
. "D:\home\site\wwwroot\<YOURFUNCTIONAPP>\bin\Invoke-Parallel.ps1"

# Import the AzureRM Powershell Module
import-module 'D:\home\site\wwwroot\<YOURFUNCTIONAPP>\bin\AzureRM.profile\2.4.0\AzureRM.Profile.psm1'
# Login
$AzureRMAccount = Add-AzureRmAccount -Credential $credentials -ServicePrincipal -TenantId $env:AzureAutomationTennatID
If ($AzureRMAccount) { 
    # Import the AzureRM Compute Module
    import-module 'D:\home\site\wwwroot\<YOURFUNCTIONAPP>\bin\AzureRM.Compute\2.4.0\AzureRM.Compute.psm1'
    $vms = Get-AzureRMVM -ResourceGroupName $in.resourcegroup  
    $vmrunninglist = @()
    $vmstoppedlist = @()
  
    Foreach($vm in $vms)
    {
        $vmstatus = Get-AzureRMVM -ResourceGroupName $in.resourcegroup -name $vm.name -Status       
        $PowerState = (get-culture).TextInfo.ToTitleCase(($vmstatus.statuses)[1].code.split("/")[1])
          
        if ($Powerstate -eq 'Running')
        {
            $vmrunninglist = $vmrunninglist + $vm.name
        }
        if ($Powerstate -eq 'Deallocated')
        {
            $vmstoppedlist = $vmstoppedlist + $vm.name
        } 
    }
    write-output "====VMs Running====" $vmrunninglist
    write-output "====VMs Stopped====" $vmstoppedlist
}

# Started Stopped VMs
if ($in.mode -eq 'start') {
    write-output "+++Starting VM's+++" $vmstoppedlist  
    $output = $vmstoppedlist       
    $vmstoppedlist | Invoke-Parallel -ImportVariables -NoCloseOnTimeout -RunspaceTimeout 30 -logfile 'D:\home\site\wwwroot\<YOURFUNCTIONAPP>\logs\invoke.log' -ScriptBlock {
    Start-AzureRMVM -ResourceGroupName $in.resourcegroup -Name $_ -Verbose }
}

# Stop Started VM's
if ($in.mode -eq 'stop') {
     write-output "+++Stopping VM's+++" $vmrunninglist  
     $output = $vmrunninglist      
     $vmrunninglist | Invoke-Parallel -ImportVariables -NoCloseOnTimeout -RunspaceTimeout 30 -logfile 'D:\home\site\wwwroot\<YOURFUNCTIONAPP>\logs\invoke.log' -ScriptBlock {
     Stop-AzureRMVM -ResourceGroupName $in.resourcegroup -Name $_ -Verbose -Force }
}

Out-File -Encoding Ascii -FilePath $res -inputObject $output