<?php

/**
 * @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) {

  // Load the content type's location settings to see if addanother is enabled.
  $settings = variable_get('location_settings_node_' . $node->type, array());
  $is_enabled = isset($settings['multiple']['location_addanother']) ? $settings['multiple']['location_addanother'] : 0;

  // If addanother is enabled,
  // and the number of locations is less then the maximum
  // and we're in the full view_mode,
  // and the user has access to edit the node,
  if ($is_enabled &&
    count($node->locations) < $settings['multiple']['max'] &&
    $view_mode == 'full' &&
    node_access('update', $node)
  ) {
    // then display the addanother form.
    $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) {

  // Load the content type's location settings to see if addanother is enabled.
  $settings = variable_get('location_settings_node_' . $form['#node_type']->type, array());
  $is_enabled = isset($settings['multiple']['location_addanother']) ? $settings['multiple']['location_addanother'] : 0;

  $form['location_settings']['multiple']['location_addanother'] = array(
    '#type' => 'checkbox',
    '#title' => t('Add another location from node view page'),
    '#default_value' => $is_enabled,
    '#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) {

  // Load the content type's location settings to set the form's default settings.
  $settings = variable_get('location_settings_node_' . $node->type, array());
  // Store the node in form_state so it doesn't have to get loaded more than once.
  $form_state['#node'] = $node;

  $form['location'] = array(
    '#type' => 'location_element',
    '#title' => t('Add another location'),
    '#default_value' => NULL,
    '#location_settings' => $settings,
    '#collapsible' => TRUE,
    '#collapsed' => TRUE,
  );

  $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) {
  // Load the stored node from form_state.
  $node = $form_state['#node'];
  // Load the content type's location settings to see if addanother is enabled.
  $settings = variable_get('location_settings_node_' . $node->type, array());
  $is_enabled = isset($settings['multiple']['location_addanother']) ? $settings['multiple']['location_addanother'] : FALSE;

  // If addanother isn't enabled for this node type,
  // or there's too many locations,
  // or the user doesn't have access to add a location,
  if (!$is_enabled ||
    count($node->locations) >= variable_get('location_maxnum_' . $node->type, 0) ||
    !node_access('update', $node)
  ) {
    // then give a useful error.
    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 location_addanother_node_type_delete($info) {
  variable_del('location_addanother_' . $info->type);
}

/**
 * Implements hook_node_type_update().
 *
 * Synchronize our settings.
 */
function location_addanother_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);
  }
}