add: paramters to get-requredmodules and updated public functions

source/Private/Get-RequiredModule.ps1

@@ -1,4 +1,15 @@
 function Get-RequiredModule {
+    [CmdletBinding(DefaultParameterSetName = 'AuditFunction')]
+    param (
+        [Parameter(Mandatory = $true, ParameterSetName = 'AuditFunction')]
+        [switch]$AuditFunction,
+
+        [Parameter(Mandatory = $true, ParameterSetName = 'SyncFunction')]
+        [switch]$SyncFunction
+    )
+
+    switch ($PSCmdlet.ParameterSetName) {
+        'AuditFunction' {
             return @(
                 @{ ModuleName = "ExchangeOnlineManagement"; RequiredVersion = "3.3.0" },
                 @{ ModuleName = "AzureAD"; RequiredVersion = "2.0.2.182" },
@@ -12,4 +23,14 @@ function Get-RequiredModule {
                 @{ ModuleName = "Microsoft.Online.SharePoint.PowerShell"; RequiredVersion = "16.0.24009.12000" },
                 @{ ModuleName = "MicrosoftTeams"; RequiredVersion = "5.5.0" }
             )
+        }
+        'SyncFunction' {
+            return @(
+                @{ ModuleName = "ImportExcel"; RequiredVersion = "7.8.9" }
+            )
+        }
+        default {
+            throw "Please specify either -AuditFunction or -SyncFunction switch."
+        }
+    }
 }

source/Public/Invoke-M365SecurityAudit.ps1

@@ -65,7 +65,7 @@ function Invoke-M365SecurityAudit {
         }
         # Ensure required modules are installed
         if (!($NoModuleCheck)) {
-            $requiredModules = Get-RequiredModule
+            $requiredModules = Get-RequiredModule -AuditFunction
             foreach ($module in $requiredModules) {
                 Assert-ModuleAvailability -ModuleName $module.ModuleName -RequiredVersion $module.RequiredVersion -SubModuleName $module.SubModuleName
             }

source/Public/Sync-CISExcelAndCsvData.ps1

@@ -49,6 +49,12 @@ function Sync-CISExcelAndCsvData {
     )
 
     process {
+        # Verify ImportExcel module is available
+        $requiredModules = Get-RequiredModule -SyncFunction
+        foreach ($module in $requiredModules) {
+            Assert-ModuleAvailability -ModuleName $module.ModuleName -RequiredVersion $module.RequiredVersion -SubModuleName $module.SubModuleName
+        }
+
         # Merge Excel and CSV data
         $mergedData = Merge-CISExcelAndCsvData -ExcelPath $ExcelPath -WorksheetName $WorksheetName -CsvPath $CsvPath
 
@@ -61,3 +67,4 @@ function Sync-CISExcelAndCsvData {
         }
     }
 }
+