Cannot save code snippet in functions.php

So, I got this piece of code from a developer. He is now unresponsive.

When I paste this code in the functions.php file and try to save the file, I get an error :
“Something went wrong. Your change may not have been saved. Please try again. There is also a chance that you may need to manually fix and upload the file over FTP.”

Can anyone have a look and help with the code?



function wooac_added_text() {

return 'View Your Cart';

}



function wooac_check_in_cart( $product ) {

if ( ! class_exists( 'WPCleverWooac' ) || ! isset( WC()->cart ) ) {

return false;

}

if ( is_a( $product, 'WC_Product' ) ) {

$product_id = $product->get_id();

} else {

$product_id = absint( $product );

}

foreach ( WC()->cart->get_cart() as $cart_item ) {

if ( $cart_item['product_id'] == $product_id ) {

return true;

}

}



return false;

}



add_filter( 'woocommerce_product_add_to_cart_text', function ( $text, $product ) {

if ( wooac_check_in_cart( $product ) ) {

$text = wooac_added_text();

}



return $text;

}, 99, 2 );



add_filter( 'woocommerce_product_add_to_cart_url', function ( $url, $product ) {

if ( wooac_check_in_cart( $product ) ) {

$url = wc_get_cart_url();

}



return $url;

}, 99, 2 );



add_filter( 'woocommerce_product_single_add_to_cart_text', function ( $text, $product ) {

if ( wooac_check_in_cart( $product ) ) {

$text = wooac_added_text();

}



return $text;

}, 99, 2 );



add_filter( 'woocommerce_loop_add_to_cart_args', function ( $args, $product ) {

if ( wooac_check_in_cart( $product ) ) {

$args['class'] = str_replace( 'ajax_add_to_cart', '', $args['class'] );

}



return $args;

}, 99, 2 );



add_filter( 'woocommerce_add_to_cart_form_action', function ( $action ) {

global $product;



if ( wooac_check_in_cart( $product ) ) {

$action = wc_get_cart_url();

}



return $action;

}, 99 );



add_action( 'woocommerce_before_add_to_cart_button', function () {

global $product;



if ( wooac_check_in_cart( $product ) ) {

?>

<button type="submit" class="single_add_to_cart_button button alt<?php echo esc_attr( wc_wp_theme_get_element_class_name( 'button' ) ? ' ' . wc_wp_theme_get_element_class_name( 'button' ) : '' ); ?>"><?php echo esc_html( $product->single_add_to_cart_text() ); ?></button>

<?php

echo '<div class="wooac-added-to-cart" style="display: none">';

}

} );



add_action( 'woocommerce_after_add_to_cart_button', function () {

global $product;



if ( wooac_check_in_cart( $product ) ) {

echo '</div><!-- /wooac-added-to-cart -->';

}

} );



add_action( 'wp_enqueue_scripts', function () {

wp_localize_script( 'wooac-frontend', 'wooac_added_vars', [

'added_text' => wooac_added_text(),

'cart_url' => wc_get_cart_url(),

] );

}, 99 );



add_action( 'wp_footer', function () {

?>

<script>

(function($) {

$(document.body).on('added_to_cart', function(e, fragments, cart_hash, $button) {

$button.text(wooac_added_vars.added_text).

removeClass('ajax_add_to_cart').

attr('href', wooac_added_vars.cart_url);

});

})(jQuery);

</script>

<?php

} );

I am no coder so what I’m looking for is someone to look at the code and tell me what I need to change to make the code work