homemade calendar with ACF – PHP function problem

Hi, I’m using an Elementor Pro theme with ACF to make a calendar that matches my client’s wish.

When logged-in users add an event, they can chose if there is an ending date or if the event is one day only (you can’t see that functionnality for now because I changed it after my client created events).

I added a PHP function to see only the events that take place after the day we see the calendar. I achieved it simply when every event had an ending date, but I am struggling with my code to show one-day events.

You can see my code below :

add_action( 'elementor/query/filter_date', function( $query ) {
        $today = date('Ymd');
        $meta_query = $query->get( 'meta_query' );
        if(empty('ending_date')){
            $meta_query = [
                [       
                'key'       => 'starting_date',
                'value'     => $today,
                'type'      => 'DATE',
                'compare'   => '>=',
                ]
            ];
        } else {
            $meta_query = [
                [       
                'key'       => 'ending_date',
                'value'     => $today,
                'type'      => 'DATE',
                'compare'   => '>=',
                ]
            ];
        }
	
        $query->set( 'meta_query', $meta_query );
	} );

Any idea how I can fix it please?

Thanks

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