Connect SharePoint site with Azure AD app registration client id and secret

#Script is used to test that sharepoint site gets connected with Azure AD app registration client id and secret.

$abc=Connect-PnPOnline -Url "https://miracl.sharepoint.com/sites/testsite-2" -ClientId "920cf67c-2973-423a-b419-" -ClientSecret "Rol8Q~WyNV_fA0IdCXWfyl5hhq2V5LA5_PMBLakt"
Get-PnPWeb

New-PnPList -Title "Contoso AD App List" -Template GenericList

Azure AD APP API Sites.Selected - 2

	
#Get-InstalledModule -Name "PnP.PowerShell"
#Uninstall-Module -Name PnP.PowerShell
#Install-Module -Name PnP.PowerShell -RequiredVersion 1.12.0
#Get-Command -Module PnP.Powershell
#Update-Module -Name "PnP.PowerShell"

#Script reads a csv file name "file.csv" having threee columns SiteURL,AppID and AppDisplayName 

#Script grant Azure AD App having API sites.selected to access SharePoint site with "FullControl" permission.

try {
    
      
    $csvData = Import-Csv -Path "file.csv"
    
    # Get the current date and time
    $timestamp = Get-Date -Format "yyyyMMdd-HHmmss"

    foreach ($row in $csvData) 
    {

    $siteURL = $row.SiteURL
    $appID = $row.AppID
    $appDisplayName = $row.AppDisplayName
    
    $displayNameConcatenated = "$appID - $appDisplayName"
    
    Connect-PnPOnline -Url $siteURL -Interactive

    # Grant Write permissions to the Azure AD app on the site
    Grant-PnPAzureADAppSitePermission -AppId $appID -DisplayName $displayNameConcatenated -Site $siteURL -Permissions Write

    # Fetch Permission ID
    $PermissionId = Get-PnPAzureADAppSitePermission -AppIdentity $appID 

    # Set permissions to FullControl using the fetched permission ID
    Set-PnPAzureADAppSitePermission -Site $siteURL -PermissionId $($PermissionId.Id) -Permissions "FullControl"

   

    # Construct the filename with a timestamp
    $filename = "Success-AzureADAppSitePermissions_$timestamp.txt"

    # Retrieve Azure AD app permissions for the site and store the output in a file
    $permissionOutput = Get-PnPAzureADAppSitePermission -Site $siteURL
    $permissionOutput | Out-File -FilePath $filename -Encoding UTF8 -Force

    # Completion message in green
    Write-Host "Script executed successfully!" -ForegroundColor Green
   }
}
catch {
     # Display error message in red
    Write-Host "An error occurred: $($_.Exception.Message)" -ForegroundColor Red

    # Log error to a separate file
    $errorLogFilename = "ErrorLog_$timestamp.txt"
    $_.Exception.Message | Out-File -FilePath $errorLogFilename -Encoding UTF8 -Force

}