<?php
// $ID:  $
/**
 * @file an attempt at supporting the ability to import views directly - from
 * the dump that views_export gives us.
 * 
 * This is my first go at HOOK_patterns, and I really don't understand what most
 * of the phases are for.
 * 
 * But it seems to work!
 * 
 * @author dman
 */

module_load_include('inc', 'views', 'includes/admin');
views_include('view');
  
function views_ui_patterns($op, $id = null, &$data = null) {

  switch($op) {
    // Return the valid tags that this component can prepare and process
    case 'tags':
      return array('views_import');
    break;

    case 'config':
    break;

    // Prepare data for processing
    case 'prepare':
      if ($data['filename']) {
        $data['view'] = file_get_contents($data['filename']);
      }
    break;

    // Pre validate actions
    case 'pre-validate':
    break;

    // Return the form_id('s) for each action
    case 'form_id':
      return 'views_ui_import_page';
    break;

    // Return a list of forms/actions this component can handle
    case 'actions':
      return array(
        'views_ui_import_page' => t('Views: Import a view from an exported view definition'),
      );
    break;

    // Validate the values for an action before running the pattern
    case 'validate':
      eval($data['view']);
      if (empty($view)) {
        watchdog('patterns', "Failed to run pattern to initialize a view ". print_r(get_defined_vars(), 1). print_r(debug_backtrace(), 1));
        return "Failed to find the view definition. ". $data['filename'];
      }
    break;

    // Prepare for valid processing of this type of component
    case 'build':
      include_once drupal_get_path('module', 'views') .'/includes/admin.inc';

      $values = array(
        'view' => $data['view'],
        'op' => 'Import',
        'submit' => 'Import',
      );
      $form_state = array('values' => $values);
      drupal_execute('views_ui_import_page', $form_state);
  
      // At this point the whole view is stored in the UI edit cache
      // - BUT NOT SAVED YET
      // I need to Really save the cached thing.
      // Get it back from cache - it may have appropriate validated bits in it that were missing earlier.
      eval($data['view']);

      // Bogus. views internals throws a trivial warning if there is no display set.
      // fudge that
      if (empty($view->display)) {
        $view->display = array();
      }

      // Woo, now we actually know the $view.
      // Could I have skipped the whole tedious import? probably.
      if (!empty($view)) {
        views_ui_cache_load($view->name);
        @$view->save();
        // DONE!
      }
      else {
        watchdog('patterns', "Failed to initialize view to save it" . print_r($values, 1));
      }

      return $data;
    break;

    // Build a patterns actions and parameters
    case 'params':
    break;

    case 'cleanup':
    break;

    case 'identifier':
    break;
  }
}