Algol Plus Ltd

class WDP_and_WCUMCS_compatibility {
private $currency_func;

public function __construct() {
    $this->init_hooks();
}

public function init_hooks() {
    add_action( 'init', array( $this, 'snatch_currency_function' ), 10 );
    add_filter( 'wdp_get_product_price', array( $this, 'wdp_get_product_price' ), 10, 4 );
    add_filter( 'wdp_update_new_price', array( $this, 'wdp_update_new_price' ), 10, 2 );
    add_filter( 'wdp_update_initial_price', array( $this, 'wdp_update_initial_price' ), 10, 2 );
    add_filter( 'wdp_apply_to_wc_cart', array( $this, 'wdp_apply_to_wc_cart' ), 10, 2 );
    add_filter( 'wdp_rules_amount_for_item', array( $this, 'wdp_rules_amount_for_item' ), 10, 3 );
}

public function wdp_get_product_price($price, $product, $price_mode, $item_meta) {
    if ( ! $product->is_on_sale( 'edit' ) ) {
        $price = $product->get_price( '' );
    }

    return $price;
}

public function snatch_currency_function() {
    global $wp_filter;
    $callbacks = $wp_filter['woocommerce_product_get_regular_price']->callbacks;
    if ( ! $callbacks || empty( $callbacks[9999] ) ) {
        return;
    }
    $callbacks = $callbacks[9999];

    if ( ! count( $callbacks ) ) {
        return;
    }

    $callback = reset( $callbacks );

    $this->currency_func = isset( $callback['function'] ) ? $callback['function'] : null;
}

public function wdp_update_new_price( $new_price, $wc_product ) {
    if ( ! $this->currency_func ) {
        return $new_price;
    }

    $currency_func = $this->currency_func;
    $rate = $wc_product->get_regular_price( '' ) !== 0 ? $currency_func( $wc_product->get_regular_price( '' ), $wc_product ) / $wc_product->get_regular_price( '' ) : 0;

    return (float) ( $new_price * $rate );
}

public function wdp_update_initial_price( $initial_price, $wc_product ) {
    if ( ! $this->currency_func ) {
        return $initial_price;
    }
    $currency_func = $this->currency_func;

    return $currency_func( $initial_price, $wc_product );
}

public function wdp_apply_to_wc_cart( $wdp_cart, $wc_cart ) {
    global $wp_filter;

    WDP_Frontend::remove_callbacks( $wp_filter['woocommerce_product_get_price'], array( "WooCommerce_Ultimate_Multi_Currency_Suite_Frontend|custom_item_price_final" ) );
}

public function wdp_rules_amount_for_item( $wdp_rules, $item, $wc_product ) {
    if ( ! $this->currency_func ) {
        return $wdp_rules;
    }
    $currency_func = $this->currency_func;

    foreach ( $item->get_history() as $rule_id => $amounts ) {
        $wdp_rules[ $rule_id ] = $currency_func( array_sum( $amounts ), $wc_product );
    }

    return $wdp_rules;
}
}

new WDP_and_WCUMCS_compatibility();