Add text replacement for alert HTML and webhook content

Introduces Get-CIPPTextReplacement to process $HTMLContent and $JSONContent with tenant-specific replacements before sending alerts. Ensures dynamic content personalization for both email and webhook notifications.

Author: JohnDuprey

Modules/CIPPCore/Public/Send-CIPPAlert.ps1

@@ -18,6 +18,11 @@ function Send-CIPPAlert {
     $Table = Get-CIPPTable -TableName SchedulerConfig
     $Filter = "RowKey eq 'CippNotifications' and PartitionKey eq 'CippNotifications'"
     $Config = [pscustomobject](Get-CIPPAzDataTableEntity @Table -Filter $Filter)
+
+    if ($HTMLContent) {
+        $HTMLContent = Get-CIPPTextReplacement -TenantFilter $TenantFilter -Text $HTMLContent
+    }
+
     if ($Type -eq 'email') {
         Write-Information 'Trying to send email'
         try {
@@ -39,6 +44,7 @@ function Send-CIPPAlert {
                         }
                     }
                 }
+
                 $PowerShellBody = [PSCustomObject]@{
                     message         = @{
                         subject      = $Title
@@ -52,6 +58,7 @@ function Send-CIPPAlert {
                 }
 
                 $JSONBody = ConvertTo-Json -Compress -Depth 10 -InputObject $PowerShellBody
+
                 if ($PSCmdlet.ShouldProcess($($Recipients.EmailAddress.Address -join ', '), 'Sending email')) {
                     $null = New-GraphPostRequest -uri 'https://graph.microsoft.com/v1.0/me/sendMail' -tenantid $env:TenantID -NoAuthCheck $true -type POST -body ($JSONBody)
                 }
@@ -93,7 +100,7 @@ function Send-CIPPAlert {
 
     if ($Type -eq 'webhook') {
         Write-Information 'Trying to send webhook'
-
+        $JSONBody = Get-CIPPTextReplacement -TenantFilter $TenantFilter -Text $JSONContent -EscapeForJson
         try {
             if (![string]::IsNullOrWhiteSpace($Config.webhook) -or ![string]::IsNullOrWhiteSpace($AltWebhook)) {
                 if ($PSCmdlet.ShouldProcess($Config.webhook, 'Sending webhook')) {