<?php
// $Id: announcements.install,v 1.1.4.6 2009/10/18 17:33:11 nancyw Exp $

/**
 * @file
 * Announcements module install file.
 */

/**
 * Implementation of hook_schema().
 *
 * Inserts the announcement module's schema in the SQL database.
 */
function announcements_schema() {
  $schema['announcements'] = array(
    'module' => 'announcements',
    'description' => t('Extra node data.'),
    'fields' => array(
      'nid' => array(
        'description' => t('Node identifier.'),
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'disp-width' => '10',
        ),
      'abstract' => array(
        'description' => t('Short summary of the announcement.'),
        'type' => 'text',
        'not null' => FALSE,
        ),
      'publish_date' => array(
        'description' => t('Date announcement becomes effective.'),
        'type' => 'int',
        'unsigned' => FALSE,
        'not null' => TRUE,
        'default' => 0,
        'disp-width' => '10',
        ),
      'expiration_date' => array(
        'description' => t('Date announcement no longer effective.'),
        'type' => 'int',
        'unsigned' => FALSE,
        'not null' => TRUE,
        'default' => 0,
        'disp-width' => '10',
        ),
      ),
    'primary key' => array('nid'),
    );
  return $schema;
}

/**
 * Implementation of hook_install().
 *
 * Installs the announcement module.
 */
function announcements_install() {
  $ret = drupal_install_schema('announcements');

  if (!$ret[0]['success']) {
    drupal_set_message(t('Table installation for the Announcements module was unsuccessful.'), 'error');
  }
}

/**
 * Implementation of hook_uninstall().
 *
 * Remove the variables, nodes and schema corresponding to the FAQ module.
 */
function announcements_uninstall() {
  drupal_uninstall_schema('announcements');
  
  // Remove the node type.
  node_type_delete('announcements');
  
  // Remove the blocks.
  db_query("DELETE FROM {blocks} WHERE module='announcements'");
  
  // Remove the variables.
  variable_del('announcements_allow_expire');
  variable_del('announcements_block_max_list_count');
  variable_del('announcements_display_classification');
  variable_del('announcements_display');
  variable_del('announcements_edit_link');
  variable_del('announcements_interval');
  variable_del('announcements_per_page');
}

/**
 * Implementation of hook_uninstall().
 *
 * Increase the size of the abstract.
 */
function announcements_update_6001() {
  $ret = array();
  db_change_field($ret, 'announcements', 'abstract', 'abstract', array('type' => 'varchar', 'length' => 2048, 'not null' => FALSE, 'default' => ''));
  return $ret;
}

/**
 * Implementation of hook_update_N().
 * Change abstract to text.
 */
function announcements_update_6002() {
  $ret = array();
  db_change_field($ret, 'announcements', 'abstract', 'abstract', array('type' => 'text', 'not null' => TRUE));
  return $ret;
}