<?php
/**
 * Helper class to provide a functor as callback.
 */
class DataViewsBulkOperationsHelper {
  var $table_name;
  function __construct($table_name) {
    $this->table_name = $table_name;
  }
  function load($oid) {
    $handler = data_get_handler($this->table_name);
    if (!$handler) return NULL;
    $table = data_get_table($this->table_name);
    if (!$table) return NULL;
    $schema = $table->get('table_schema');
    $objects = $handler->load(array($schema['primary key'][0] => $oid));
    return (object)$objects[0];
  }
};

/**
 * Implementation of hook_views_bulk_operations_object_info().
 */
function data_vbo_views_bulk_operations_object_info() {
  $object_info = array();
  foreach (data_get_all_tables() as $table_name => $table) {
    $schema = $table->get('table_schema');
    $object_info[$table_name] = array(
      'type' => 'data',
      'base_table' => $table_name,
      'load' => array(new DataViewsBulkOperationsHelper($table_name), 'load'),
      'oid' => $schema['primary key'][0], // TODO handle more than one PK in VBO
      'title' => $schema['primary key'][0], // TODO find a more suitable title
    );
  }
  return $object_info;
}

/**
 * Implementation of hook_action_info().
 */
function data_vbo_action_info() {
  return array(
    'data_delete_action' => array(
      'type' => 'data',
      'description' => t('Delete data record'),
      'configurable' => FALSE,
      'behavior' => array('deletes_node_property'),
    ),
  );
}

function data_delete_action($datum, $context) {
  if (!isset($context['object_info'])) return;
  $object_info = $context['object_info'];
  $handler = data_get_handler($object_info['base_table']);
  if (!$handler) return;
  $handler->delete(array($object_info['oid'] => $datum->{$object_info['oid']})); 
}