<?php
// $Id: location_addanother.module,v 1.6.2.1.2.4 2011-02-09 12:41:23 rooby Exp $

/**
 * @file
 * "Add location from node view" functionality.
 * Split from main location.module in version 3.
 */

/**
 * Implements hook_node_view().
 */
function location_addanother_node_view($node, $view_mode, $langcode) {
  if (variable_get('location_addanother_' . $node->type, 0) && count($node->locations) < variable_get('location_maxnum_' . $node->type, 0) && $view_mode == 'full' && node_access('update', $node)) {
    $addanother_form = drupal_get_form('location_addanother_form', $node);
    $node->content['location_addanother'] = array(
      '#type' => 'markup',
      '#markup' => drupal_render($addanother_form),
    );
  }
}

/**
 * Implements hook_form_FORM_ID_alter().
 * Alter the node_type_form form.
 */
function location_addanother_form_node_type_form_alter(&$form, &$form_state, $form_id) {
  $type = $form['#node_type']->type;

  $form['location_settings']['multiple']['location_addanother'] = array(
    '#type' => 'checkbox',
    '#title' => t('Add another location from node view page'),
    '#default_value' => variable_get('location_addanother_' . $type, 0),
    '#description' => t('Display the "Add another location" option on the node view page.'),
  );
}

/**
 * Form to display directly on a node view for "quick location add" functionality.
 */
function location_addanother_form($form, &$form_state, &$node) {
  $settings = variable_get('location_settings_node_' . $node->type, array());

  $form['location'] = array(
    '#type' => 'location_element',
    '#title' => t('Add another location'),
    '#default_value' => NULL,
    '#location_settings' => $settings['form']['fields'],
    '#collapsible' => TRUE,
    '#collapsed' => TRUE,
  );
  $form['location']['nid'] = array(
    '#type' => 'hidden', // @@@ See if we can get away with value-ing this.
    '#value' => $node->nid,
  );

  $form['actions'] = array('#type' => 'actions');
  $form['actions']['submit'] = array(
    '#type' => 'submit',
    '#value' => t('Add location'),
    '#weight' => 50,
  );
  return $form;
}

/**
 * Validation function for "add another location" form.
 */
function location_addanother_form_validate($form, &$form_state) {
  $location = $form_state['values']['location'];
  $node = node_load($location['nid']);
  unset($location['nid']);
  if (!(variable_get('location_addanother_' . $node->type, 0) && count($node->locations) < variable_get('location_maxnum_' . $node->type, 0) && node_access('update', $node))) {
    form_set_error('location', t("You don't have permission to add a location to this node, or the node has the maximum number of locations already."));
  }
}

/**
 * Submission function for "add another location" form.
 */
function location_addanother_form_submit($form, &$form_state) {
  $location = $form_state['values']['location'];
  $node = node_load($location['nid']);
  $locations = $node->locations;
  unset($location['nid']);
  $locations[] = $location;

  location_save_locations($locations, array('nid' => $node->nid, 'vid' => $node->vid));

  return 'node/' . $node->nid;
}

/**
 * Implements hook_node_type_delete().
 * Synchronize our settings.
 */
function hook_node_type_delete($info) {
  variable_del('location_addanother_' . $info->type);
}

/**
 * Implements hook_node_type_update().
 * Synchronize our settings.
 */
function hook_node_type_update($info) {
  if (!empty($info->old_type) && $info->old_type != $info->type) {
    $setting = variable_get('location_addanother_' . $info->old_type, 0);
    variable_del('location_addanother_' . $info->old_type);
    variable_set('location_addanother_' . $info->type, $setting);
  }
}