<?php
// $Id$

// Updates happen in random order, whether or not the module is enabled,
// so include critical code here just to be sure.
include_once('./'. drupal_get_path('module', 'content') .'/content.module');

/**
 * Implementation of hook_install().
 */
function text_install() {
  content_notify('install', 'text');
}

/**
 * Implementation of hook_uninstall().
 */
function text_uninstall() {
  content_notify('uninstall', 'text');
}

/**
 * Implementation of hook_enable().
 *
 * Notify content module when this module is enabled.
 */
function text_enable() {
  content_notify('enable', 'text');
}

/**
 * Implementation of hook_disable().
 *
 * Notify content module when this module is disabled.
 */
function text_disable() {
  content_notify('disable', 'text');
}

function text_update_last_removed() {
  return 5;
}

/**
 * Rename widgets to match hook_elements values.
 *
 * The change in field_types will keep content_update_6000() from correctly updating
 * the module names in the field and instance tables, so do it here.
 *
 */
function text_update_6000() {
  $ret = array();
  $result = db_query("SELECT * FROM {". content_instance_tablename() ."} WHERE widget_type = 'text'");
  while ($field_instance = db_fetch_array($result)) {
    $widget_settings = unserialize($field_instance['widget_settings']);
    $new_widget_type = ($widget_settings['rows'] > 1) ? 'text_textarea' : 'text_textfield';
    $ret[] = update_sql("UPDATE {". content_instance_tablename() ."} SET widget_module = 'text', widget_type = '". $new_widget_type ."' WHERE field_name = '{$field_instance['field_name']}' AND type_name = '{$field_instance['type_name']}'");
  }
  content_associate_fields('text');
  return $ret;
}

/**
 * Set all columns to accept NULL values and set empty string values in the
 * database to NULL.
 *
 * Leaving it up to module developers to handle conversion of numbers to
 * NULL values, since there are times when zeros are valid data and times
 * when they should be NULL.
 *
 */
function text_update_6001() {
  $ret = array();

  // Get the latest cache values and schema.
  content_clear_type_cache(TRUE, TRUE);

  include_once('./'. drupal_get_path('module', 'content') .'/content.install');
  $types = content_types_install();
  foreach ($types as $type_name => $fields) {
    foreach ($fields as $field) {
      switch ($field['type']) {
        case 'text':
          $db_info = content_database_info($field);
          $table = $db_info['table'];
          foreach ($db_info['columns'] as $column => $attributes) {
            $attributes['not null'] = FALSE;
            $column = $attributes['column'];
            db_change_field($ret, $table, $column, $column, $attributes);
            // TODO : errors on text/blob columns : no default value allowed (!)
            db_field_set_no_default($ret, $table, $column);
            if ($attributes['type'] == 'varchar' || $attributes['type'] == 'text') {
              $ret[] = update_sql("UPDATE {". $table ."} SET ". $column ." = NULL WHERE ". $column ." = ''");
            }
            else {
              // TODO : replace format = 0 with format = NULL ?? Is this right ?
              $ret[] = update_sql("UPDATE {". $table ."} SET ". $column ." = NULL WHERE ". $column ." = 0");
            }
          }
          break;
      }
    }
  }
  return $ret;
}