<?php

/**
 * Implementation of hook_install().
 */
function form_builder_install() {
  drupal_install_schema('form_builder');
}

/**
 * Implementation of hook_uninstall().
 */
function form_builder_uninstall() {
  drupal_uninstall_schema('form_builder');
  $result = db_query("SELECT name FROM {variable} WHERE name LIKE 'form_builder_%'");
  while ($row = db_fetch_object($result)) {
    variable_del($row->name);
  }
}

/**
 * Implementation of hook_requirements().
 */
function form_builder_requirements($phase) {
  $requirements = array();
  $t = get_t();
  if ($phase == 'runtime') {
    $form_builder_types = module_invoke_all('form_builder_types');
    if (empty($form_builder_types)) {
      $requirements['form_builder_types']['title'] = $t('Form builder');
      $requirements['form_builder_types']['severity'] = REQUIREMENT_ERROR;
      $requirements['form_builder_types']['description'] = t('Form builder module is installed but no modules implement support for it. You may want to disable Form builder module until it is needed.');
    }
  }

  return $requirements;
}

/**
 * Implementation of hook_schema().
 */
function form_builder_schema() {
  $schema = array();

  $schema['form_builder_cache'] = array(
    'fields' => array(
      'sid' => array(
        'type' => 'varchar',
        'length' => '64',
        'not null' => FALSE,
        ),
      'form_id' => array(
        'type' => 'varchar',
        'length' => '128',
        'not null' => FALSE,
      ),
      'type' => array(
          'type' => 'varchar',
          'length' => '32',
          'not null' => FALSE,
      ),
      'updated' => array(
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0,
        'disp-width' => '10',
      ),
      'data' => array(
        'type' => 'blob',
        'not null' => FALSE,
        'size' => 'big',
      ),
    ),
    'indexes' => array(
       'sid_obj_name' => array('sid', 'type', 'form_id'),
       'updated' => array('updated'),
    ),
  );

  return $schema;
}

/**
 * Change the {form_builder_cache} table to use a 'longblob' data column.
 */
function form_builder_update_6000() {
  $ret = array();
  $spec = array(
    'type' => 'blob',
    'not null' => FALSE,
    'size' => 'big',
  );
  db_change_field($ret, 'form_builder_cache', 'data', 'data', $spec);
  return $ret;
}

/**
 * Change the {form_builder_cache} table to use a longer form_id column.
 */
function form_builder_update_6001() {
  $ret = array();
  $spec = array(
    'type' => 'varchar',
    'length' => '128',
    'not null' => FALSE,
  );
  db_change_field($ret, 'form_builder_cache', 'form_id', 'form_id', $spec);
  return $ret;
}