Woocommerce product not appearing in category list page when created programatically [closed]

Try like

$post_id = wp_insert_post( array(
    'post_title' => $items['description'],
    'post_content' => $items['detail'],
    'post_excerpt' => $items['description_2'],
    'post_status' => 'publish',
    'post_type' => "product",
) );

// Set Product type
// wp_set_object_terms( $post_id, 'simple', 'product_type');                            
wp_set_post_terms( $post_id, 'simple', 'product_type');
// Get parent category returns mixed or objects
$category_parent = get_term_by('name', 'Lense', 'product_cat');
// Get child category returns array
$category_child = term_exists( 'Canon', 'product_cat', $category_parent->term_id);

// Set product brand
// wp_set_object_terms( $post_id, 'Canon', 'product_brand');
// wp_set_post_terms( $post_id, 'Canon', 'product_brand');

// Set category for this product post
// wp_set_object_terms( $post_id, $category_parent->term_id, 'product_cat', false); 
// wp_set_object_terms( $post_id, (int)$category_child['term_id'], 'product_cat', true);

wp_set_post_terms($post_id, array($category_parent->term_id,(int)$category_child['term_id']), 'product_cat');


// add_post_meta( $post_id, '_wc_booking_availability', $availability );

update_post_meta( $post_id, '_visibility', 'visible' );
update_post_meta( $post_id, '_stock_status', 'instock');
update_post_meta( $post_id, 'total_sales', '0');
update_post_meta( $post_id, '_downloadable', 'yes');
update_post_meta( $post_id, '_virtual', 'yes');
update_post_meta( $post_id, '_regular_price', "1" );
update_post_meta( $post_id, '_sale_price', "1" );
update_post_meta( $post_id, '_purchase_note', "" );
update_post_meta( $post_id, '_featured', "no" );
update_post_meta( $post_id, '_weight', "" );
update_post_meta( $post_id, '_length', "" );
update_post_meta( $post_id, '_width', "" );
update_post_meta( $post_id, '_height', "" );
update_post_meta($post_id, '_sku', "");
update_post_meta( $post_id, '_product_attributes', array());
update_post_meta( $post_id, '_sale_price_dates_from', "" );
update_post_meta( $post_id, '_sale_price_dates_to', "" );
update_post_meta( $post_id, '_price', "1" );
update_post_meta( $post_id, '_sold_individually', "" );
update_post_meta( $post_id, '_manage_stock', "no" );
update_post_meta( $post_id, '_backorders', "no" );
update_post_meta( $post_id, '_stock', "" );




// ===================== Create product image =================
$image = $items['cover_img_url'];

// magic sideload image returns an HTML image, not an ID
$media = media_sideload_image($image, $post_id);

// therefore we must find it so we can set it as featured ID
if(!empty($media) && !is_wp_error($media)){
    $args = array(
        'post_type' => 'attachment',
        'posts_per_page' => -1,
        'post_status' => 'any',
        'post_parent' => $post_id
    );

    // reference new image to set as featured
    $attachments = get_posts($args);

    if(isset($attachments) && is_array($attachments)){
        foreach($attachments as $attachment){
            // grab source of full size images (so no 300x150 nonsense in path)
            $image = wp_get_attachment_image_src($attachment->ID, 'full');
            // determine if in the $media image we created, the string of the URL exists
            if(strpos($media, $image[0]) !== false){
                // if so, we found our image. set it as thumbnail
                set_post_thumbnail($post_id, $attachment->ID);
                // only want one image
                break;
            }
        }
    }
}


// ================= Create Product Gallery
$images = $items['images'];
if(isset($images) && is_array($images)){

    $list_id = "";

    // magic sideload image returns an HTML image, not an ID
    $media = media_sideload_image($images[1]['full_url'], $post_id);

    // therefore we must find it so we can set it as featured ID
    if(!empty($media) && !is_wp_error($media)){
        $args = array(
            'post_type' => 'attachment',
            'posts_per_page' => -1,
            'post_status' => 'any',
            'post_parent' => $post_id
        );

        // reference new image to set as featured
        $attachments = get_posts($args);

        if(isset($attachments) && is_array($attachments)){
            foreach($attachments as $attachment){
                // grab source of full size images (so no 300x150 nonsense in path)
                $image = wp_get_attachment_image_src($attachment->ID, 'full');
                // determine if in the $media image we created, the string of the URL exists
                if(strpos($media, $image[0]) !== false){
                    // if so, we found our image. set it as thumbnail
                    // set_post_thumbnail($post_id, $attachment->ID);
                    $list_id .= $attachment->ID . ",";
                    // only want one image
                    break;
                }
            }
        }
    }

    update_post_meta($post_id,'_product_image_gallery',$list_id);

Hope it will help !