WooCommerce PDF Vouchers - Redeem Voucher on Cart Total - Code Snippet for German tax rule

woo-vou-rvct-german-tax-calculation.php

<?php
/*
 * Modify woocommerce tax rule for german 
 * Display the orginal tax without applying discount
*/
function woo_vou_german_woocommerce_calc_tax( $tax_totals, $cart ) { 

    $count = 1;
    foreach ( $cart->cart_contents as $key => $item) {
        $tax_totals['TAX-'.$count]->amount = $item['line_subtotal_tax'];
        $count++;
    }

    return $tax_totals; 
}; 

// add the filter for modify woocommerce tax rule for german 
add_filter( 'woocommerce_cart_tax_totals', 'woo_vou_german_woocommerce_calc_tax', 999, 2 ); 

// Filter to display Tax if order total zero
add_filter( 'woocommerce_cart_hide_zero_taxes', '__return_false' );
add_filter( 'woocommerce_order_hide_zero_taxes', '__return_false' );

/*
 * Modify woocommerce tax rule for german 
 * Display the orginal tax without applying discount for all the order pages
*/
function woo_vou_german_woocommerce_order_tax( $tax_totals, $order){
    $tax_totals = array();
    $tax_custom_array = array();

    $count = 1;

    foreach ( $order->get_items() as $item_id => $item ) {
        $tax_custom_array[$count] = $item->get_subtotal_tax();
    }

    $count = 1;
    foreach ( $order->get_items( 'tax' ) as $key => $tax ) {

        $code = $tax->get_rate_code();

        if ( ! isset( $tax_totals[ $code ] ) ) {
            $tax_totals[ $code ]         = new stdClass();
            $tax_totals[ $code ]->amount = 0;
        }

        $tax_totals[ $code ]->id               = $key;
        $tax_totals[ $code ]->rate_id          = $tax->get_rate_id();
        $tax_totals[ $code ]->is_compound      = $tax->is_compound();
        $tax_totals[ $code ]->label            = $tax->get_label();
        $tax_totals[ $code ]->amount          += (float) $tax_custom_array[$count] + (float) $tax->get_shipping_tax_total();
        $tax_totals[ $code ]->formatted_amount = wc_price( $tax_totals[ $code ]->amount, array( 'currency' => $order->get_currency() ) );
    }

    if ( apply_filters( 'woocommerce_order_hide_zero_taxes', true ) ) {
        $amounts    = array_filter( wp_list_pluck( $tax_totals, 'amount' ) );
        $tax_totals = array_intersect_key( $tax_totals, $amounts );
    }

    return $tax_totals;
}

// add the filter for modify woocommerce tax rule for german 
add_filter( 'woocommerce_order_get_tax_totals', 'woo_vou_german_woocommerce_order_tax', 999, 2 );