Reward & coupon according to currency

Reward & coupon according to currency

add_filter( 'fkcart_rewards_list', function ( $data ) {
	if ( empty( $data['rewards'] ) || ! isset( $data['subtotal'] ) ) {
		return $data;
	}

	$currency = function_exists( 'get_woocommerce_currency' ) ? get_woocommerce_currency() : '';
	$subtotal = (float) $data['subtotal'];

	// (discount = coupon reward, freegift = free gift reward).
	$targets = [
		'USD' => [ 'discount' => 180, 'freegift' => 220 ],
		'EUR' => [ 'discount' => 200, 'freegift' => 250 ],
		'GBP' => [ 'discount' => 160, 'freegift' => 200 ],
	];

	if ( ! isset( $targets[ $currency ] ) ) {
		return $data;
	}

	$row = $targets[ $currency ];

	$data['coupons'] = [ 'add' => [], 'remove' => [] ];
	$data['gifts']   = [ 'add' => [], 'remove' => [] ];

	foreach ( $data['rewards'] as $i => $reward ) {
		$type = isset( $reward['type'] ) ? $reward['type'] : '';
		if ( ! isset( $row[ $type ] ) ) {
			continue;
		}

		$need = (float) $row[ $type ];
		$ok   = ( $subtotal >= $need );

		$data['rewards'][ $i ]['achieved']        = $ok;
		$data['rewards'][ $i ]['pending_amount'] = $ok ? 0.0 : max( 0.0, $need - $subtotal );

		if ( 'discount' === $type && ! empty( $reward['coupon'] ) ) {
			if ( $ok ) {
				$data['coupons']['add'][] = $reward['coupon'];
			} else {
				$data['coupons']['remove'][] = $reward['coupon'];
			}
		}

		if ( 'freegift' === $type && ! empty( $reward['freeProduct'] ) && is_array( $reward['freeProduct'] ) ) {
			$ids = array_column( $reward['freeProduct'], 'key' );
			if ( $ok ) {
				$data['gifts']['add'] = array_merge( $data['gifts']['add'], $ids );
			} else {
				$data['gifts']['remove'] = array_merge( $data['gifts']['remove'], $ids );
			}
		}
	}

	foreach ( [ 'coupons', 'gifts' ] as $bucket ) {
		foreach ( [ 'add', 'remove' ] as $side ) {
			$data[ $bucket ][ $side ] = array_values( array_unique( $data[ $bucket ][ $side ] ) );
		}
	}

	return $data;
}, 20 );