<?php

/**
 * @file
 * Custom functionality for NCAC site.
 */

/**
 * Implementation of hook_init().
 */
function ncac_init() {
  // Add dialog specific js. Used for 'Book now' dialog.
  dialog_add_js();
}

/**
 * Implementation of hook_menu().
 *
 * @return array of menu items
 */
function ncac_menu() {
  $items = array();
  $items['book/%node/%ctools_js'] = array(
    'title' => 'Book this activity',
    'page callback' => 'ncac_dialog_node_view',
    'page arguments' => array(1, 2),
    'access arguments' => array('access content'),
    'type' => MENU_CALLBACK,
  );
  return $items;
}

/**
 * Implementation of hook_nodeapi().
 */
function ncac_nodeapi(&$node, $op) {
  // Remove add_to_cart and display_price portions of the node display when in dialog mode
  if (($op == 'view') && (isset($node->build_mode)) && ($node->build_mode === 'dialog')) {
    unset($node->content['add_to_cart']);
    unset($node->content['display_price']);
  }
}

/**
 * Implementation of hook_content_build_modes().
 *
 * @return
 * An array describing the build modes used by the module.
 * They are grouped by secondary tabs on CCK's 'Display fields' screens.
 */
function ncac_content_build_modes() {
  $modes = array();
  $modes['dialog'] = array(
    'title' => t('Dialog'),
    'build modes' => array(
      'dialog' => array(
        'title' => t('Dialog'),
        'views style' => FALSE,
      ),
    ),
  );
  return $modes;
}

/**
 * Implementation of hook_form_alter().
 */
function ncac_form_alter(&$form, $form_state, $form_id) {
  // Only do this for node forms
  if (isset($form['#id']) && ($form['#id'] == 'node-form') && arg(0) == 'node') {
    $node = $form['#node'];

    // If a path has already been set for this node, don't automatically tick
    // the 'Automatic alias' box. Keeps existing aliases from being changed.
    if (drupal_strlen($node->path) > 0) {
      $node->pathauto_perform_alias = FALSE;
    }
  }

  // Add item's date validation to add to cart and buy it now forms
  $forms = array('uc_product_add_to_cart_form', 'uc_catalog_buy_it_now_form');
  foreach ($forms as $id) {
    if (drupal_substr($form_id, 0, drupal_strlen($id)) == $id) {
      $form['#validate'][] = 'ncac_validate_form_addtocart';
    }
  }

  // Add validation to cart view
  if ($form_id == 'uc_cart_view_form') {
    $form['#validate'][] = 'ncac_validate_form_cart';
  }

  // Add validation to checkout and checkout review forms
  if ($form_id == 'uc_cart_checkout_form' || $form_id == 'uc_cart_checkout_review_form') {
    $form['#validate'][] = 'ncac_validate_form_checkout';

    // Collapse and slim down the uc_discounts field. It's HUGE by default!
    $form['panes']['uc_discounts']['#collapsed'] = TRUE;
    $form['panes']['uc_discounts']['uc-discounts-codes']['#rows'] = 1;
    $form['panes']['uc_discounts']['uc-discounts-codes']['#cols'] = 20;
  }

  // Rename submit button on request node add form
  if ($form_id == 'request_node_form') {
    $form['buttons']['submit']['#value'] = 'Submit request';
  }
}

/**
 * AJAX aware view of activity registration node. Uses ctools and dialog
 *
 * @param $node
 *   Node to be rendered
 * @param $ajax
 *   Is this an AJAX request?
 */
function ncac_dialog_node_view($node, $ajax = FALSE) {
  // Is this an AJAX request? If not just render the standard page view
  if (!$ajax) {
    return node_page_view($node);
  }

  // Set the build_mode so we know to get rid of the default uc_product
  // add_to_cart form using hook_nodeapi()
  $node->build_mode = 'dialog';

  ctools_include('ajax');

  // Start building the form that will work in the dialog
  $form_state = array(
    'ajax' => TRUE,
    'title' => $node->title,
    'args' => array($node),
  );

  $form_id = 'uc_product_add_to_cart_form_' . $node->nid;

  ctools_include('form');
  // This won't override settings already in.
  $form_state += array(
    're_render' => FALSE,
    'no_redirect' => !empty($form_state['ajax']),
  );

  $output = ctools_build_form($form_id, $form_state);
  if (!empty($form_state['ajax']) && empty($form_state['executed'])) {
    $title = empty($form_state['title']) ? '' : $form_state['title'];
    // If there are messages for the form, render them. Includes min qty/date
    // errors.
    if ($messages = theme('status_messages')) {
      $output = $messages . $output;
    }
    // Render the node view and add it to the output
    $node_view = node_view($node, FALSE, TRUE);
    $output = $output . $node_view;

    $commands = array();
    if (isset($form_state['js settings'])) {
      $commands[] = ctools_ajax_command_settings($form_state['js settings']);
    }
    // Add dialog display of the node to the ctools ajax renderer stack
    $commands[] = dialog_command_display($title, $output);
    $output = $commands;
  }

  if (empty($output)) {
    // On form submission display a message in the dialog, then redirect to the cart
    $output[] = dialog_command_display(t('Book this activity'), t('Activity added to your cart...'));
    $output[] = ctools_ajax_command_redirect('cart');
  }

  // Use ctools to make the ajax magic happen
  ctools_ajax_render($output);
}