<?php
// $Id$

/*
 * hook_theme
 */
function uc_buyingclub_cart_theme() {
  return array(
    'uc_buyingclub_cart_review_table' => array(
      'arguments' => array('show_subtotal' => TRUE),
    ),
  );
}

/*
 * hook_form_alter
 */
function uc_buyingclub_cart_form_alter(&$form, &$form_state, $form_id) {

  // make units show up in cart
  if ($form_id == 'uc_cart_view_form') {
    $form['items']['#columns']['unit'] = array(
      'cell' => t('Unit'),
      'weight' => 4,
      'enabled' => true,
    );
    $form['items']['#columns']['qty']['weight'] = 5;
    $form['items']['#columns']['total']['weight'] = 6;
    $i = 0;
    foreach ($form['#parameters'][2] as $item) {
      $n = node_load($item->nid);
      $form['items'][$i]['unit']['#value'] = $n->field_unit[0]['value'];
      $i = $i + 1;
    }
  }
}

function uc_buyingclub_cart_checkout_pane_alter(&$panes) {
  
  foreach ($panes as &$pane) {
    // make units show up in cart summary on checkout
    if ($pane['id'] == 'cart') {
      $pane['callback'] = 'uc_buyingclub_cart_checkout_pane_cart';
    }
  }
}

function uc_buyingclub_cart_checkout_pane_cart($op) {
  switch ($op) {
    case 'view':
      // change the first table users see
      $contents['cart_review_table'] = array(
        '#value' => theme('uc_buyingclub_cart_review_table'),
        '#weight' => variable_get('uc_pane_cart_field_cart_weight', 2),
      );
      return array('contents' => $contents, 'next-button' => FALSE);

    case 'review':
      // change the second, review table users see
      $items = uc_cart_get_contents();
      $output = '<table>';
      $context = array(
        'revision' => 'themed',
        'type' => 'cart_item',
        'subject' => array(),
      );
      foreach ($items as $item) {
        $desc = check_plain($item->title) . uc_product_get_description($item);
        $node = node_load($item->nid);

        $price_info = array(
          'price' => $item->price,
          'qty' => $item->qty,
        );
        $context['subject'] = array(
          'cart' => $items,
          'cart_item' => $item,
          'node' => $node,
        );
        $output .= '<tr valign="top"><td>'. $item->qty .'&times;</td><td width="100%">'. $desc
                  .'</td><td nowrap="nowrap">'. $node->field_unit[0]['value'] .'</td><td nowrap="nowrap">'. uc_price($price_info, $context) .'</td></tr>';
      }
      $output .= '</table>';
      $review[] = $output;
      return $review;
  }
}

function theme_uc_buyingclub_cart_review_table($show_subtotal = TRUE) {
  $subtotal = 0;

  // Set up table header.
  $header = array(
    array('data' => t('Qty'), 'class' => 'qty'),
    array('data' => t('Products'), 'class' => 'products'),
    array('data' => t('Unit'), 'class' => 'unit'),
    array('data' => t('Price'), 'class' => 'price'),
  );

  $context = array();

  // Set up table rows.
  $contents = uc_cart_get_contents();
  foreach ($contents as $item) {
    $node = node_load($item->nid);

    $price_info = array(
      'price' => $item->price,
      'qty' => $item->qty,
    );

    $context['revision'] = 'altered';
    $context['type'] = 'cart_item';
    $context['subject'] = array(
      'cart' => $contents,
      'cart_item' => $item,
      'node' => $node,
    );

    $total = uc_price($price_info, $context);
    $subtotal += $total;

    $description = check_plain($item->title) . uc_product_get_description($item);

    // Remove node from context to prevent the price from being altered.
    $context['revision'] = 'themed-original';
    $context['type'] = 'amount';
    unset($context['subject']);
    $rows[] = array(
      array('data' => t('@qty&times;', array('@qty' => $item->qty)), 'class' => 'qty'),
      array('data' => $description, 'class' => 'products'),
      array('data' => $node->field_unit[0]['value'], 'class' => 'unit'),
      array('data' => uc_price($total, $context), 'class' => 'price'),
    );
  }

  // Add the subtotal as the final row.
  if ($show_subtotal) {
    $context = array(
      'revision' => 'themed-original',
      'type' => 'amount',
    );
    $rows[] = array(
      'data' => array(array('data' => '<span id="subtotal-title">' . t('Subtotal:') . '</span> ' . uc_price($subtotal, $context), 'colspan' => 3, 'class' => 'subtotal')),
      'class' => 'subtotal',
    );
  }

  return theme('table', $header, $rows, array('class' => 'cart-review'));
}