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1/**
2* Adding custom WooCommerce Tabs
3*/
4add_filter( 'woocommerce_product_tabs', 'woo_new_product_tab' );
5function woo_new_product_tab( $tabs ) {
6    // Array with category ID that doesn't require extra tabs
7    $target_products_ids = array(
8        18, // Supplies
9        43, // Glass
10        80, // Education
11        15 // Uncat
12    );
13
14    // Get the global product object
15    global $product;
16
17    // Stores the current product's category ID(s)
18    $product_cats_ids = wc_get_product_term_ids( $product->get_id(), 'product_cat' );
19
20    // Comapres both arrays and prints out which element was not found from $target_products_ids in $product_cats_ids
21    $difference = array_diff($target_products_ids, $product_cats_ids);
22
23    // As long as one of the elements from $difference is removed, the tabs for the current product should be unset
24    if(count($difference) != count($target_products_ids)) return $tabs;
25
26    // Creating global variables to be used within inner-functions (not 'product')
27    global $product, $current_meta_data, $indexFeature, $indexFaqs, $indexTechnicalDetails, $indexSupport;
28    $id = $product->get_id();
29
30    // Connects to WC Rest API
31    $woocommerce = new Client(
32        'www.example.com',
33        '###',
34        '###',
35        [
36            'wp_api' => true,
37            'version' => 'wc/v3',
38            'query_string_auth' => true # Force Basic Authentication as query string true and using under HTTPS
39        ]
40    );  
41
42    $current_product = $woocommerce->get('products/'.$id);
43    $current_meta_data = $current_product->meta_data;
44
45    // Retrieves the current meta data for this current product
46    $keys = array_column($current_meta_data, 'key');
47
48    // Within that array of meta data, it finds the index of the given string (meta data name)
49    $indexFeature = array_search('_features', $keys);
50    $indexFaqs = array_search('_faqs', $keys);
51    $indexTechnicalDetails = array_search('_technical_details', $keys);
52    $indexSupport = array_search('_support', $keys);
53
54    // Will add the tab to the current product if the meta data's content is not empty
55    if(!empty( $current_meta_data[$indexFeature]->value )) {
56        $tabs['features2'] = array(
57            'title'     => __( 'Features', 'woocommerce' ),
58            'priority'  => 50,
59            'callback'  => function() {
60                global $current_meta_data, $indexFeature;
61                echo $current_meta_data[$indexFeature]->value;
62            }
63        );
64    }
65    if(!empty( $current_meta_data[$indexFaqs]->value )) {
66        $tabs['faqs2'] = array(
67            'title'     => __( 'FAQs', 'woocommerce' ),
68            'priority'  => 51,
69            'callback'  => function() {
70                global $current_meta_data, $indexFaqs;
71                echo $current_meta_data[$indexFaqs]->value;
72            }
73        );
74    }
75    if(!empty( $current_meta_data[$indexTechnicalDetails]->value )) {
76        $tabs['technical_details2'] = array(
77            'title'     => __( 'Technical Details', 'woocommerce' ),
78            'priority'  => 52,
79            'callback'  => function() {
80                global $current_meta_data, $indexTechnicalDetails;
81                echo $current_meta_data[$indexTechnicalDetails]->value;
82            }
83        );
84    }
85    if(!empty( $current_meta_data[$indexSupport]->value )) {
86        $tabs['support2'] = array(
87            'title'     => __( 'Support', 'woocommerce' ),
88            'priority'  => 53,
89            'callback'  => function() {
90                global $current_meta_data, $indexSupport;
91                echo $current_meta_data[$indexSupport]->value;
92            }
93        );
94    }
95
96    // Returns the changed tabs to this current product
97    return $tabs;
98
99}