Creating azure scheduler using powershell

$sub = Select-AzureRmSubscription -SubscriptionId $SubscriptionId

function createSchedulerJob {
param(
[Parameter(Mandatory=$true)]
[String] $SchedulerResourceGroup,

[Parameter(Mandatory=$true)]
[String] $SchedulerCollectionName,

[Parameter(Mandatory=$true)]
[String] $ScheduleJobParam,

[Parameter(Mandatory=$true)]
[String] $AutomationAccountRG,

[Parameter(Mandatory=$true)]
[String] $AutomationAccountName
)

$runbookName, $schedulerJobName, $schedulerInterval, $schedulerFrequency, $schedulerStartTime = $ScheduleJobParam.Split(";")
$schedulerStartTimeDay, $schedulerStartTimeHHMM = $schedulerStartTime.Split("-")
$schedulerStartTimeHour, $schedulerStartTimeMinute = $schedulerStartTimeHHMM.Split(":")

$webhookName = "$runbookName-Webhook"
$HybridWorkerGroup = "HybridWorkerGroup"
$webhookExpiryTime = (Get-Date).AddYears(5)

$job = Get-AzureRmSchedulerJob -ResourceGroupName $SchedulerResourceGroup -JobCollectionName $SchedulerCollectionName -JobName $schedulerJobName -ErrorAction SilentlyContinue
$webhook = Get-AzureRmAutomationWebhook -Name $webhookName -ResourceGroupName $AutomationAccountRG -AutomationAccountName $AutomationAccountName -ErrorAction SilentlyContinue

if ($job -eq $null -or ($webhook -ne $null -and $webhook.ExpiryTime -lt (Get-Date).AddYears((1)))){
if ($webhook -ne $null)
{
$null = Remove-AzureRmAutomationWebhook -ResourceGroupName $AutomationAccountRG  -AutomationAccountName $AutomationAccountName -Name $webhookName
}
}

$webhook = Get-AzureRmAutomationWebhook -Name $webhookName -ResourceGroupName $AutomationAccountRG -AutomationAccountName $AutomationAccountName -ErrorAction SilentlyContinue
if ($webhook -eq $null)
{

$webhook = New-AzureRmAutomationWebhook -Name $webhookName -RunbookName $runbookName -ResourceGroupName $AutomationAccountRG -AutomationAccountName $AutomationAccountName -IsEnabled $true -ExpiryTime $webhookExpiryTime -Force

$webhookRes = Get-AzureRmResource -ResourceGroupName $AutomationAccountRG -ResourceType 'Microsoft.Automation/automationAccounts/webhooks' -ResourceName "$AutomationAccountName/$webhookName"
$webhookRes.Properties.runOn = $HybridWorkerGroup
Set-AzureRmResource -ResourceId $webhookRes.ResourceId -Properties $webhookRes.Properties -Force
   

$schedulerJobParam = @{ResourceGroupName=$SchedulerResourceGroup;
JobCollectionName=$SchedulerCollectionName;
JobName=$schedulerJobName;
Method='POST';
Uri=$($webhook.WebhookURI);
Interval=$schedulerInterval;
Frequency=$schedulerFrequency}
$schedulerDateTimeParam = @{}

if ($schedulerFrequency -eq "Day" -and $schedulerInterval -eq "1" -and $schedulerStartTimeDay -eq "AllDay") {
$calcStartTime = (Get-Date).Date.AddDays(1).AddHours($schedulerStartTimeHour).AddMinutes($schedulerStartTimeMinute)
$schedulerDateTimeParam = @{StartTime="$calcStartTime"}
}
elseif ($schedulerFrequency -ne "Hour" -and $schedulerFrequency -ne "Minute") {           
$date = Get-Date
while ($Date.DayOfWeek -ne $schedulerStartTimeDay) {$date = $date.AddDays(1)}
$calcStartTime = ($date.Date).AddHours($schedulerStartTimeHour).AddMinutes($schedulerStartTimeMinute)
$schedulerDateTimeParam = @{StartTime="$calcStartTime"}
}
            else {
                $schedulerDateTimeParam = @{StartTime=$(Get-Date)}
            }
$schedulerJobParam += $schedulerDateTimeParam

if ($job -eq $null)
{

New-AzureRmSchedulerHttpJob @schedulerJobParam
}
else
{

Set-AzureRmSchedulerHttpJob @schedulerJobParam
}
}
else
{
Log-Information "Webhook($webhookName) already exists, skipping scheduler job creation"
}
}
#endregion function to create JobScheduler & Webhook


$null=Set-AutomationVariable -Name "AutomationAccount" -Value $AutomationAccountName -ResourceGroupName $AutomationAccountRG -AutomationAccountName $AutomationAccountName
$null=Set-AutomationVariable -Name "AutomationResourceGroup" -Value $AutomationAccountRG -ResourceGroupName $AutomationAccountRG -AutomationAccountName $AutomationAccountName

createSchedulerJob -SchedulerResourceGroup $SchedulerResourceGroup -SchedulerCollectionName $SchedulerCollectionName -scheduleJobParam $SchedulerParamPaaSComplianceCheck `
   -AutomationAccountRG $AutomationAccountRG -AutomationAccountName $AutomationAccountName