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✏️ Editing: weightrate.php

<?php
/**
 * wpsc-shipping/weightrate.php
 *
 * @package WP e-Commerce
 */

class weightrate {
	var $internal_name, $name;

/**
	 * Constructor
	 *
	 * @return boolean Always returns true.
	 */
	function __construct() {
		$this->internal_name = 'weightrate';
		$this->name          = __( 'Weight Rate', 'wp-e-commerce' );
		$this->is_external   = false;
		return true;
	}

/**
	 * Returns i18n-ized name of shipping module.
	 *
	 * @return string
	 */
	function getName() {
		return $this->name;
	}

/**
	 * Returns internal name of shipping module.
	 *
	 * @return string
	 */
	function getInternalName() {
		return $this->internal_name;
	}

/**
	 * Generates row of table rate fields.
	 */
	private function output_row( $key = '', $shipping = '' ) {
		$currency  = wpsc_get_currency_symbol();
		$class     = ( $this->alt ) ? ' class="alternate"' : '';
		$this->alt = ! $this->alt;
		?>
			<tr>
				<td<?php echo $class; ?>>
					<div class="cell-wrapper">
						<input type="text" name="wpsc_shipping_weightrate_layer[]" value="<?php echo esc_attr( $key ); ?>" size="4" />
						<small><?php _e( ' lbs and above', 'wp-e-commerce' ); ?></small>
					</div>
				</td>
				<td<?php echo $class; ?>>
					<div class="cell-wrapper">
						<small><?php echo esc_html( $currency ); ?></small>
						<input type="text" name="wpsc_shipping_weightrate_shipping[]" value="<?php echo esc_attr( $shipping ); ?>" size="4" />
						<span class="actions">
							<a tabindex="-1" title="<?php _e( 'Delete Layer', 'wp-e-commerce' ); ?>" class="button-secondary wpsc-button-round wpsc-button-minus" href="#"><?php echo _x( '&ndash;', 'delete item', 'wp-e-commerce' ); ?></a>
							<a tabindex="-1" title="<?php _e( 'Add Layer', 'wp-e-commerce' ); ?>" class="button-secondary wpsc-button-round wpsc-button-plus" href="#"><?php echo _x( '+', 'add item', 'wp-e-commerce' ); ?></a>
						</span>
					</div>
				</td>
			</tr>
		<?php
	}

/**
	 * Returns HTML settings form. Should be a collection of <tr> elements containing two columns.
	 *
	 * @return string HTML snippet.
	 */
	function getForm() {
		$this->alt = false;
		$layers    = get_option( 'weight_rate_layers', array() );
		ob_start();
		?>
		<tr>
			<td colspan='2'>
				<table>
					<thead>
						<tr>
							<th class="total-weight" title="<?php _e( 'You must enter the weight here in pounds, regardless of what you used on your products', 'wp-e-commerce' ); ?>">
								<?php _e( 'Total Weight', 'wp-e-commerce' ); ?><br /><small><?php _e( 'in pounds', 'wp-e-commerce' ); ?></small>
							</th>
							<th class="shipping"><?php _e( 'Shipping Price', 'wp-e-commerce' ); ?></th>
						</tr>
					</thead>
					<tbody class="table-rate">
						<tr class="js-warning">
							<td colspan="2">
								<small><?php echo sprintf( __( 'To remove a rate layer, simply leave the values on that row blank. By the way, <a href="%s">enable JavaScript</a> for a better user experience.', 'wp-e-commerce'), 'http://www.google.com/support/bin/answer.py?answer=23852' ); ?></small>
							</td>
						</tr>
						<?php if ( ! empty( $layers ) ): ?>
							<?php
								foreach( $layers as $key => $shipping ){
									$this->output_row( $key, $shipping );
								}
							?>
						<?php else: ?>
							<?php $this->output_row(); ?>
						<?php endif ?>
					</tbody>
				</table>
			</td>
		</tr>
		<?php
		return ob_get_clean();
	}

/**
	 * Saves shipping module settings.
	 *
	 * @return boolean Always returns true.
	 */
	function submit_form() {
		if ( empty( $_POST['wpsc_shipping_weightrate_shipping'] ) || empty( $_POST['wpsc_shipping_weightrate_layer'] ) ) {
			return false;
		}

$new_layers = array();
		$layers     = (array) $_POST['wpsc_shipping_weightrate_layer'];
		$shippings  = (array) $_POST['wpsc_shipping_weightrate_shipping'];

if ( !empty( $shippings ) ) {
			foreach ( $shippings as $key => $price ) {

if ( empty( $price ) || trim( $layers[ $key ] ) == '' ) {
					continue;
				}

$new_layers[ sanitize_text_field( $layers[ $key ] ) ] = sanitize_text_field( $price );
			}
		}

krsort( $new_layers );
		update_option( 'weight_rate_layers', $new_layers );
		return true;
	}

/**
	 * returns shipping quotes using this shipping module.
	 *
	 * @return array collection of rates applicable.
	 */
	function getQuote() {

global $wpsc_cart;

$weight = wpsc_cart_weight_total();
		if (is_object($wpsc_cart)) {
			$cart_total = $wpsc_cart->calculate_subtotal(true);
		}

$layers = get_option('weight_rate_layers');

if ($layers != '') {
			krsort($layers);
			foreach ($layers as $key => $shipping) {
				if ($weight >= (float)$key) {
					if (stristr($shipping, '%')) {
						// Shipping should be a % of the cart total
						$shipping = str_replace('%', '', $shipping);
						$shipping_amount = $cart_total * ( $shipping / 100 );
						return array( __( "Weight Rate", 'wp-e-commerce' ) => (float)$shipping_amount );
					} else {
						return array( __( "Weight Rate", 'wp-e-commerce' ) => $shipping );
					}
				}
			}
			$shipping = array_shift($layers);
			if (stristr($shipping, '%')) {
				$shipping = str_replace('%', '', $shipping);
				$shipping_amount = $cart_total * ( $shipping / 100 );
			} else {
				$shipping_amount = $shipping;
			}
			return array( __( "Weight Rate", 'wp-e-commerce' ) => (float) $shipping_amount );
		}
	}

/**
	 * Calculates shipping price for an individual cart item.
	 *
	 * @param  object $cart_item (reference)
	 * @return float             Price of shipping for the item.
	 */
	function get_item_shipping( &$cart_item ) {

global $wpsc_cart;

$quantity = $cart_item->quantity;
		$product_id = $cart_item->product_id;

$uses_billing_address = false;
		foreach ($cart_item->category_id_list as $category_id) {
			$uses_billing_address = (bool)wpsc_get_categorymeta($category_id, 'uses_billing_address');
			if ($uses_billing_address === true) {
				break; /// just one true value is sufficient
			}
		}

if (is_numeric($product_id) && (get_option('do_not_use_shipping') != 1)) {
			if ($uses_billing_address == true) {
				$country_code = $wpsc_cart->selected_country;
			} else {
				$country_code = $wpsc_cart->delivery_country;
			}
			if ($cart_item->uses_shipping == true) {
				//if the item has shipping
				$additional_shipping = '';
				if (isset($cart_item->meta[0]['shipping'])) {
					$shipping_values = $cart_item->meta[0]['shipping'];
				}
				if (isset($shipping_values['local']) && $country_code == get_option('base_country')) {
					$additional_shipping = $shipping_values['local'];
				} else {
					if (isset($shipping_values['international'])) {
						$additional_shipping = $shipping_values['international'];
					}
				}
				$shipping = $quantity * $additional_shipping;
			} else {
				//if the item does not have shipping
				$shipping = 0;
			}
		} else {
			//if the item is invalid or all items do not have shipping
			$shipping = 0;
		}
		return $shipping;
	}
}

$weightrate = new weightrate();
$wpsc_shipping_modules[$weightrate->getInternalName()] = $weightrate;

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