<?php

/**

 * @file

 * Install, update and uninstall functions for the trigger module.

 */

/**

 * Implements hook_schema().

 */

function trigger_schema() {

  // The total index length (hook and aid) must be less than 333. Since the aid

  // field is 255 characters, the hook field can have a maximum length of 78.

  $schema['trigger_assignments'] = array(

    'description' => 'Maps trigger to hook and operation assignments from trigger.module.',

    'fields' => array(

      'hook' => array(

        'type' => 'varchar',

        'length' => 78,

        'not null' => TRUE,

        'default' => '',

        'description' => 'Primary Key: The name of the internal Drupal hook; for example, node_insert.',

      ),

      'aid' => array(

        'type' => 'varchar',

        'length' => 255,

        'not null' => TRUE,

        'default' => '',

        'description' => "Primary Key: Action's {actions}.aid.",

      ),

      'weight' => array(

        'type' => 'int',

        'not null' => TRUE,

        'default' => 0,

        'description' => 'The weight of the trigger assignment in relation to other triggers.',

      ),

    ),

    'primary key' => array('hook', 'aid'),

    'foreign keys' => array(

      'action' => array(

        'table' => 'actions',

        'columns' => array('aid' => 'aid'),

      ),

    ),

  );

  return $schema;

}

/**

 * Implements hook_install().

 */

function trigger_install() {

  // Do initial synchronization of actions in code and the database.

  actions_synchronize();

}

/**

 * Alter the "hook" field and drop the "op field" of {trigger_assignments}.

 *

 * Increase the length of the "hook" field to 78 characters and adds operation

 * names to the hook names, and drops the "op" field.

 */

function trigger_update_7000() {

  db_drop_primary_key('trigger_assignments');

  db_change_field('trigger_assignments', 'hook', 'hook', array('type' => 'varchar', 'length' => 78, 'not null' => TRUE, 'default' => '', 'description' => 'Primary Key: The name of the internal Drupal hook; for example, node_insert.'));

  $result = db_query("SELECT hook, op, aid FROM {trigger_assignments} WHERE op <> ''");

  foreach ($result as $record) {

    db_update('trigger_assignments')

      ->fields(array('hook' => $record->hook . '_' . $record->op))

      ->condition('hook', $record->hook)

      ->condition('op', $record->op)

      ->condition('aid', $record->aid)

      ->execute();

  }

  db_drop_field('trigger_assignments', 'op');

  db_add_primary_key('trigger_assignments', array('hook', 'aid'));

}

/**

 * @addtogroup updates-7.x-extra

 * @{

 */

/**

 * Increase the length of the "hook" field to 78 characters.

 *

 * This is a separate function for those who ran an older version of

 * trigger_update_7000() that did not do this.

 */

function trigger_update_7001() {

  db_drop_primary_key('trigger_assignments');

  db_change_field('trigger_assignments', 'hook', 'hook', array('type' => 'varchar', 'length' => 78, 'not null' => TRUE, 'default' => '', 'description' => 'Primary Key: The name of the internal Drupal hook; for example, node_insert.', ), array('primary key' => array('hook', 'aid')));

}

/**

 * Renames nodeapi to node.

 */

function trigger_update_7002() {

  $result = db_query("SELECT hook, aid FROM {trigger_assignments}");

  foreach($result as $record) {

    $new_hook = str_replace('nodeapi', 'node', $record->hook);

    db_update('trigger_assignments')

      ->fields(array('hook' => $new_hook))

      ->condition('hook', $record->hook)

      ->condition('aid', $record->aid)

      ->execute();

  }

}

/**

 * @} End of "addtogroup updates-7.x-extra".

 */