<?php
/**
 * @file
 * Install file for W.NG
 */

/**
 * Helper for entity exportability.
 *
 * May not use entity_exportable_schema_fields() directly.
 *
 * @see entity_exportable_schema_fields()
 */
function _wing_exportable_schema_fields($entity) {
  $t = get_t();
  $arg = array('@entity' => $entity);
  $ret = array(
    'machine_name' => array(
      'description' => $t('The machine name of the @entity.', $arg),
      'type' => 'varchar',
      'length' => 255,
      'not null' => TRUE,
      'default' => '',
    ),
    'title' => array(
      'description' => $t('The human name of the @entity.', $arg),
      'type' => 'varchar',
      'length' => 255,
      'not null' => TRUE,
      'default' => '',
    ),
    'created' => array(
      'description' => $t('The Unix timestamp when the @entity was created.', $arg),
      'type' => 'int',
      'not null' => TRUE,
      'default' => 0,
    ),
    'changed' => array(
      'description' => t('The Unix timestamp when the @entity was most recently saved.', $arg),
      'type' => 'int',
      'not null' => TRUE,
      'default' => 0,
    ),
    'status' => array(
      'description' => $t('The exportable status of the @entity.', $arg),
      'type' => 'int',
      'not null' => TRUE,
      // Set the default to ENTITY_CUSTOM without using the constant as it is
      // not safe to use it at this point.
      'default' => 0x01,
      'size' => 'tiny',
    ),
    'module' => array(
      'description' => $t('The name of the providing module if the @entity has been defined in code.', $arg),
      'type' => 'varchar',
      'length' => 255,
      'not null' => FALSE,
    ),
  );

  return $ret;
}


function Zwing_field_schema($field) {
  $schema = array(
    'columns' => array(
      'rid' => array(
        'description' => 'The id of the role performing the transition.',
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
      ),
      'sid' => array(
        'description' => 'The id of the state at the end of the transition.',
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
      ),
    ),
    'indexes' => array(
      'target_id' => array('rid', 'sid'),
    ),
    'foreign keys' => array(
      'role' => array(
        'table' => 'role',
        'columns' => array('rid' => 'rid'),
      ),
      'next_state' => array(
        'table' => 'wing_state',
        'columns' => array('sid' => 'sid'),
      ),
    ),
  );

  return $schema;
}

/**
 * Implements hook_schema().
 *
 * - wing_state
 * - wing_workflow
 */
function Zwing_schema() {
  $schema = array(
    'wing_state' => array(
      'description' => 'The base table for Wing State entities',
      'fields' => array(
        'sid' => array(
          'type' => 'serial',
          'unsigned' => TRUE,
          'not null' => TRUE,
          ),
        'workflow' => array(
          'description' => 'The {wing_workflow}.machine_name of this state.',
          'type' => 'varchar',
          'length' => 32,
          'not null' => TRUE,
          'default' => '',
        ),
      ) + _wing_exportable_schema_fields('wing_state'),
      'primary key' => array('sid'),
      'indexes' => array(
        'workflow' => array('workflow'),
      ),
      'unique keys' => array('machine_name' => array('machine_name')),
      'foreign keys' => array(
        'workflow' => array(
          'table' => 'wing_workflow',
          'columns' => array('workflow' => 'wid'),
        ),
      ),
    ),

    'wing_workflow' => array(
      'description' => 'The base table for Wing Workflow entities',
      'fields' => array(
        'wid' => array(
          'type' => 'serial',
          'unsigned' => TRUE,
          'not null' => TRUE,
        ),
      ) + _wing_exportable_schema_fields('wing_workflow'),
      'primary key' => array('wid'),
      'unique keys' => array('machine_name' => array('machine_name')),
    ),
  );

  return $schema;
}

/**
 * Implements hook_uninstall().
 *
 * @see entity_test_uninstall() {
 */
function Zwing_uninstall() {
  // FIXME: provide correct values.
  $wing_state_types = array();

  foreach ($wing_state_types as $name => $type) {
    field_attach_delete_bundle('entity_test', $name);
  }
}