Woocommerce Restrinct Certain Categories Combinations

restrinct-categories-combination.php

<?php
//Renan Diaz - 2018
//Woocommerce restrinct certain categories combinations in the Woocommerce cart

//Restrinctions Begin
add_action('woocommerce_before_single_product', 'fs_check_category_in_cart');
function fs_check_category_in_cart() {
	
	// Set $cat_in_cart
	$cat_in_cart = '';
	
	// Loop through all products in the Cart        
	foreach ( WC()->cart->get_cart() as $cart_item_key => $cart_item ) {
	    
		$product = $cart_item['data'];
		
		// If Cart has category "fotografia", save
		if ( has_term( 'fotografia', 'product_cat', $product->get_id() ) ) {
			$cat_in_cart = 'fotografia';
			break;
		}
		// If Cart has category "diseno", save
		elseif( has_term( 'diseno', 'product_cat', $product->get_id() ) ) {
			$cat_in_cart = 'diseno';
			break;
		}
		
	}
	
	
	switch ($cat_in_cart) {
	    
	case 'fotografia':

		global $product;
		

	    $terms = get_the_terms( $product->ID, 'product_cat' );
        foreach ($terms as $term) {
            $product_cat_id[] = $term->term_id;
            break;
        }
		
		//If ID 148 is in cart, print notice
		if( in_array( 148 , $product_cat_id ) ){
		    
		    // Print a notice - Explain to customer why can't buy the product
		    $explain = '<p>Ha agregado productos de <b>Fotografía</b> al carrito, temporalmente no podemos aceptar compras conjuntas. Si desea comprar este producto debe finalizar primero el pedido actual e intentar nuevamente. Ofrecemos disculpas y estaremos trabajando para solventarlo lo mas pronto posible.</p>';
		    		
		    wc_print_notice( $explain, 'notice' );

        }

	    add_filter('woocommerce_is_purchasable', 'dis_pur', 10, 2);

        function dis_pur( $is_purchasable, $product ) {

                //Not purchasable categories ID if cart has "diseno"
                $not_purchasable_cat_ids = array( 148 );
            
                $categories = get_the_terms($product->ID, 'product_cat');
               
                //Check if current product ID is forbidden
                foreach($categories AS $category)
                {
                    if( in_array( $category->term_id, $not_purchasable_cat_ids ) )
                    {
                        return false;
                    }
                    return true;
                }
    
        }

		break;
	
	case 'diseno':

		global $product;
		
		//Get current product categories
	    $terms = get_the_terms( $product->ID, 'product_cat' );
        foreach ($terms as $term) {
            $product_cat_id[] = $term->term_id;
            break;
        }
		
		//If ID 149 is in cart, print notice
		if( in_array( 149 , $product_cat_id ) ){
		
		    // Print a notice - Explain to customer why can't buy the product
		    $explain = '<p>Ha agregado productos de <b>Diseño</b> al carrito, temporalmente no podemos aceptar compras conjuntas. Si desea comprar este producto debe finalizar primero el pedido actual e intentar nuevamente. Ofrecemos disculpas y estaremos trabajando para solventarlo lo mas pronto posible.</p>';
		
		    wc_print_notice( $explain, 'notice' );

		}


	    add_filter('woocommerce_is_purchasable', 'dis_pur', 10, 2);

        function dis_pur( $is_purchasable, $product ) {

                //Not purchasable categories ID if cart has "diseno"
                $not_purchasable_cat_ids = array( 149 );
            
                $categories = get_the_terms($product->ID, 'product_cat');
                
                //Check if current product ID is forbidden
                foreach($categories AS $category)
                {
                    if( in_array( $category->term_id, $not_purchasable_cat_ids ) )
                    {
                        return false;
                    }
                    return true;
                }
    
        }

		break;
		
		default:

		 //Default function...

		break;
		
    }

}