Tribe Events Plugin - wootickets add-on, show ticket cost and availability

gumwp_plugin_tribe_events_wootix_show_cost.php

add_filter( 'tribe_get_cost', 'gum_wootickets_tribe_get_cost', 10, 3 );
function gum_wootickets_tribe_get_cost( $cost, $postId, $withCurrencySymbol ) {
	
	if ( empty($cost) && class_exists('TribeWooTickets') ) {
  		// see if the event has tickets associated with it
		$wootickets = TribeWooTickets::get_instance();
		$ticket_ids = $wootickets->get_Tickets_ids( $postId );
		
		if ( empty($ticket_ids) ) {
			return '';
		}
 
		// see if any tickets remain, and what price range they have
		$max_price = 0;
		$min_price = 0;
		$sold_out = TRUE;
		$stock = 0;
		$stock_msg = '';
		
		foreach ( $ticket_ids as $ticket_id ) {
			$ticket = $wootickets->get_ticket($postId, $ticket_id);
			$stock = $ticket->stock;
			
			if ( $ticket->stock ) {
				$sold_out = FALSE;
				$price = $ticket->price;
				
				if ( $price > $max_price ) {
					$max_price = $price;
				}
				
				if ( empty($min_price) || $price < $min_price ) {
					$min_price = $price;
				}
			}
		}
		
		if ( $stock && $stock <= 5) {
			$stock_msg = ' | <div class="stock-message-alert">Hurry, Only '. $stock .' Available</div>';
		}
		
		if ( $sold_out ) { // all of the tickets are sold out
			return __(' <div class="stock-message-alert">Sold Out</div>');
		}
		
		if ( empty($max_price) ) { // none of the tickets costs anything
			return __('Free');
		}
 
		// make a string showing the price (or range, if applicable)
		$currency = tribe_get_option( 'defaultCurrencySymbol', '$' );
		
		if ( empty($min_price) || $min_price == $max_price ) {
		
			if ( tribe_is_view() || 'tribe_events' == get_post_type() || is_singular( 'tribe_events' )) {
				
				if ( $stock && $stock < 5 && is_front_page()) {
					return $currency .' '. $max_price . ' | <div class="stock-message-alert small">Only '. $stock .' Available</div>';
				}
				
				if (is_singular( 'tribe_events' )) {
					return $currency .' '. $max_price . $stock_msg;
				} else {
					return ' '. $max_price . $stock_msg;
				}
				
			} else {
				return ' '. $max_price;
			}
			
		}
		
		return $min_price . ' - ' . $max_price;
	}
	
	return $cost; // return the default, if nothing above returned
}