<#
.DESCRIPTION
A Runbook example which continuously check for files and directories changes in recursive mode
For a specific Azure File Share in a specific Sync Group / Cloud Endpoint
Using the Run As Account (Service Principal in Azure AD)

.NOTES
Filename : Enable-ImmediateFileSync
Author   : Charbel Nemnom
Version  : 1.0
Date     : 24-August-2019
Updated  : 26-August-2019

.LINK
To provide feedback or for further assistance please visit:
https://charbelnemnom.com 
#>

Param (
    [Parameter(Mandatory = $true)][ValidateNotNullOrEmpty()]
    [String] $AzureSubscriptionId,
    [Parameter(Mandatory = $true)][ValidateNotNullOrEmpty()]
    [String] $ResourceGroupName,
    [Parameter(Mandatory = $true)][ValidateNotNullOrEmpty()]
    [String] $StorageSyncServiceName,
    [Parameter(Mandatory = $true)][ValidateNotNullOrEmpty()]
    [String] $SyncGroupName,
    [Parameter(Mandatory = $true)][ValidateNotNullOrEmpty()]
    [String] $Path
)

$connectionName = "AzureRunAsConnection"

Try {
    #! Get the connection "AzureRunAsConnection "
    $servicePrincipalConnection = Get-AutomationConnection -Name $connectionName
    Write-Output "Logging in to Azure..."
    Connect-AzAccount -ServicePrincipal `
        -TenantId $servicePrincipalConnection.TenantId `
        -ApplicationId $servicePrincipalConnection.ApplicationId `
        -CertificateThumbprint $servicePrincipalConnection.CertificateThumbprint
}
Catch {
    If (!$servicePrincipalConnection) {
        $ErrorMessage = "Connection $connectionName not found..."
        throw $ErrorMessage
    }
    Else {
        Write-Error -Message $_.Exception
        throw $_.Exception
    }
}

Select-AzSubscription -SubscriptionId $AzureSubscriptionId

#! Get Cloud Endpoint Name
$azsync = Get-AzStorageSyncCloudEndpoint -ResourceGroupName "$ResourceGroupName" -StorageSyncServiceName $StorageSyncServiceName `
    -SyncGroupName "$SyncGroupName"
Write-Output "Get Azure StorageSync Cloud Endpoint Name: $($azsync.CloudEndpointName)"

#! Invoke-AzStorageSyncChangeDetection
Write-Output "Check for files and directories changes for $StorageSyncServiceName in $SyncGroupName"
Invoke-AzStorageSyncChangeDetection -ResourceGroupName $ResourceGroupName -StorageSyncServiceName $StorageSyncServiceName `
    -SyncGroupName $SyncGroupName -CloudEndpointName $azsync.CloudEndpointName -DirectoryPath $Path -Recursive

Write-Output ("")