*

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* @return bool True if the cart page is defined, false otherwise.

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*/

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public static function has_cart_page() {

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return wc_get_page_permalink( 'cart', -1 ) !== -1;

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}

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/**

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* Get product IDs from a user's persistent cart.

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*

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* This method retrieves product IDs stored in the user's persistent cart meta.

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* It can be used for abandoned cart emails, cart-based product collections,

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* and other scenarios where cart products need to be retrieved for a user.

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*

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* @param int|null $user_id The user ID. If not provided, will attempt to look up by email.

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* @param string|null $user_email The user email. Used to lookup user if ID not provided.

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* @return array<int> Array of product IDs from the user's cart, or empty array if none found.

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*/

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public static function get_cart_product_ids_for_user( ?int $user_id, ?string $user_email ) {

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if ( empty( $user_id ) && ! empty( $user_email ) ) {

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$user = get_user_by( 'email', $user_email );

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if ( $user ) {

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$user_id = $user->ID;

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}

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}

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if ( empty( $user_id ) ) {

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return array();

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}

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$cart_meta = get_user_meta( $user_id, '_woocommerce_persistent_cart_' . get_current_blog_id(), true );

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if ( empty( $cart_meta ) || ! is_array( $cart_meta ) || empty( $cart_meta['cart'] ) ) {

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return array();

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}

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return array_values(

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array_unique(

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array_filter(

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array_map(

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function ( $cart_item ) {

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return isset( $cart_item['product_id'] ) ? intval( $cart_item['product_id'] ) : 0;

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},

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$cart_meta['cart']

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)

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)

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)

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);

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}

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}

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