<?php

/**
 * Implementation of hook_schema().
 */
function wysiwyg_schema() {
  $schema['wysiwyg'] = array(
    'description' => 'Stores Wysiwyg profiles.',
    'fields' => array(
      'format' => array(
        'description' => 'The {filter_formats}.format of the text format.',
        'type' => 'int',
        // Primary keys are implicitly not null.
        'not null' => TRUE,
        'default' => 0,
      ),
      'editor' => array(
        'description' => 'Internal name of the editor attached to the text format.',
        'type' => 'varchar',
        'length' => 128,
        'not null' => TRUE,
        'default' => '',
      ),
      'settings' => array(
        'description' => 'Configuration settings for the editor.',
        'type' => 'text',
        'size' => 'normal',
      ),
    ),
    'primary key' => array('format'),
    'foreign keys' => array(
      'format' => array(
        'table' => 'filter_formats',
        'columns' => array('format' => 'format'),
      ),
    ),
  );
  $schema['wysiwyg_user'] = array(
    'description' => 'Stores user preferences for wysiwyg profiles.',
    'fields' => array(
      'uid' => array(
        'description' => 'The {users}.uid of the user.',
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0,
      ),
      'format' => array(
        'description' => 'The {filter_formats}.format of the text format.',
        'type' => 'int',
        'not null' => FALSE,
      ),
      'status' => array(
        'description' => 'Boolean indicating whether the format is enabled by default.',
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0,
        'size' => 'tiny',
      ),
    ),
    'indexes' => array(
      'uid' => array('uid'),
      'format' => array('format'),
    ),
    'foreign keys' => array(
      'uid' => array(
        'table' => 'users',
        'columns' => array('uid' => 'uid'),
      ),
      'format' => array(
        'table' => 'filter_formats',
        'columns' => array('format' => 'format'),
      ),
    ),
  );
  return $schema;
}

/**
 * Implementation of hook_install().
 */
function wysiwyg_install() {
  drupal_install_schema('wysiwyg');
}

/**
 * Implementation of hook_uninstall()
 */
function wysiwyg_uninstall() {
  drupal_uninstall_schema('wysiwyg');
}

/**
 * Implementation of hook_enable().
 */
function wysiwyg_enable() {
  // Disable conflicting, obsolete editor integration modules whenever this
  // module is enabled. This is crude, but the only way to ensure no conflicts.
  module_disable(array(
    'ckeditor',
    'editarea',
    'editonpro',
    'editor',
    'fckeditor',
    'freerte',
    'htmlarea',
    'htmlbox',
    'jwysiwyg',
    'markitup',
    'nicedit',
    'openwysiwyg',
    'pegoeditor',
    'quicktext',
    'tinymce',
    'tinymce_autoconf',
    'tinytinymce',
    'whizzywig',
    'widgeditor',
    'wymeditor',
    'xstandard',
    'yui_editor',
  ));
}

/**
 * Retrieve a list of input formats to associate profiles to.
 */
function _wysiwyg_install_get_formats() {
  $formats = array();
  $result = db_query("SELECT format, name FROM {filter_formats}");
  while ($format = db_fetch_object($result)) {
    // Build a list of all formats.
    $formats[$format->format] = $format->name;
    // Fetch filters.
    $result2 = db_query("SELECT module, delta FROM {filters} WHERE format = %d", $format->format);
    while ($filter = db_fetch_object($result2)) {
      // If PHP filter is enabled, remove this format.
      if ($filter->module == 'php') {
        unset($formats[$format->format]);
        break;
      }
    }
  }
  return $formats;
}

/**
 * Associate Wysiwyg profiles with input formats.
 *
 * Since there was no association yet, we can only assume that there is one
 * profile only, and that profile must be duplicated and assigned to all input
 * formats (except PHP code format).  Also, input formats already have
 * titles/names, so Wysiwyg profiles do not need an own.
 *
 * Because input formats are already granted to certain user roles only, we can
 * remove our custom Wysiwyg profile permissions.  A 1:1 relationship between
 * input formats and permissions makes plugin_count obsolete, too.
 *
 * Since the resulting table is completely different, a new schema is installed.
 */
function wysiwyg_update_6001() {
  $ret = array();
  if (db_table_exists('wysiwyg')) {
    return $ret;
  }
  // Install new schema.
  db_create_table($ret, 'wysiwyg', array(
    'fields' => array(
      'format' => array('type' => 'int', 'not null' => TRUE, 'default' => 0),
      'editor' => array('type' => 'varchar', 'length' => 128, 'not null' => TRUE, 'default' => ''),
      'settings' => array('type' => 'text', 'size' => 'normal'),
    ),
    'primary key' => array('format'),
  ));

  // Fetch all input formats.
  $formats = _wysiwyg_install_get_formats();

  // Fetch all profiles.
  $result = db_query("SELECT name, settings FROM {wysiwyg_profile}");
  while ($profile = db_fetch_object($result)) {
    $profile->settings = unserialize($profile->settings);
    // Extract editor name from profile settings.
    $profile->editor = $profile->settings['editor'];
    // Clean-up.
    unset($profile->settings['editor']);
    unset($profile->settings['old_name']);
    unset($profile->settings['name']);
    unset($profile->settings['rids']);
    // Sorry.  There Can Be Only One. ;)
    break;
  }

  if ($profile) {
    // Rebuild profiles and associate with input formats.
    foreach ($formats as $format => $name) {
      // Insert profiles.
      // We can't use update_sql() here because of curly braces in serialized
      // array.
      db_query("INSERT INTO {wysiwyg} (format, editor, settings) VALUES (%d, '%s', '%s')", $format, $profile->editor, serialize($profile->settings));
      $ret[] = array(
        'success' => TRUE,
        'query' => strtr('Wysiwyg profile %profile converted and associated with input format %format.', array('%profile' => check_plain($profile->name), '%format' => check_plain($name))),
      );
    }
  }

  // Drop obsolete tables {wysiwyg_profile} and {wysiwyg_role}.
  db_drop_table($ret, 'wysiwyg_profile');
  db_drop_table($ret, 'wysiwyg_role');

  return $ret;
}

/**
 * Clear JS/CSS caches to ensure that clients load fresh copies.
 */
function wysiwyg_update_6200() {
  $ret = array();
  // Change query-strings on css/js files to enforce reload for all users.
  _drupal_flush_css_js();

  drupal_clear_css_cache();
  drupal_clear_js_cache();

  // Rebuild the menu to remove old admin/settings/wysiwyg/profile item.
  menu_rebuild();

  // Flush content caches.
  cache_clear_all();

  $ret[] = array(
    'success' => TRUE,
    'query' => 'Caches have been flushed.',
  );
  return $ret;
}

/**
 * Create the {wysiwyg_user} table.
 */
function wysiwyg_update_6201() {
  $ret = array();
  if (!db_table_exists('wysiwyg_user')) {
    db_create_table($ret, 'wysiwyg_user', array(
      'description' => 'Stores user preferences for wysiwyg profiles.',
      'fields' => array(
        'uid' => array(
          'description' => 'The {users}.uid of the user.',
          'type' => 'int',
          'unsigned' => TRUE,
          'not null' => TRUE,
          'default' => 0,
        ),
        'format' => array(
          'description' => 'The {filter_formats}.format of the text format.',
          'type' => 'int',
          'not null' => FALSE,
        ),
        'status' => array(
          'description' => 'Boolean indicating whether the format is enabled by default.',
          'type' => 'int',
          'unsigned' => TRUE,
          'not null' => TRUE,
          'default' => 0,
          'size' => 'tiny',
        ),
      ),
      'indexes' => array(
        'uid' => array('uid'),
        'format' => array('format'),
      ),
      'foreign keys' => array(
        'uid' => array(
          'table' => 'users',
          'columns' => array('uid' => 'uid'),
        ),
        'format' => array(
          'table' => 'filter_formats',
          'columns' => array('format' => 'format'),
        ),
      ),
    ));
  }
  return $ret;
}
