<?php

/**
 * @file
 * Install, update and uninstall functions for the forum_access module.
 *
 */

/**
 * Implements hook_install().
 */
function forum_access_install() {
  db_update('system')
    ->fields(array('weight' => 2))
    ->condition('name', 'forum_access')
    ->execute();

  if ($vid = variable_get('forum_nav_vocabulary', FALSE)) {
    $result = db_query("SELECT t.tid FROM {taxonomy_term_data} t LEFT JOIN {forum_access} fa ON t.tid = fa.tid WHERE fa.tid IS NULL AND t.vid = :vid", array(
      ':vid' => $vid
    ));
    $grant_create_by_rid = array(
      DRUPAL_ANONYMOUS_RID => 0,
      DRUPAL_AUTHENTICATED_RID => 1,
    );
    foreach ($result as $td) {
      foreach ($grant_create_by_rid as $rid => $grant_create) {
        db_insert('forum_access')
          ->fields(array(
            'tid'          => $td->tid,
            'rid'          => $rid,
            'grant_view'   => 1,
            'grant_update' => 0,
            'grant_delete' => 0,
            'grant_create' => $grant_create,
            'priority'     => 0,
          ))
          ->execute();
      }
    }
  }
}

/**
 * Implements hook_schema().
 */
function forum_access_schema() {
  $schema['forum_access'] = array(
    'description'     => 'The Forum Access control table.',
    'fields'          => array(
      'tid'           => array(
        'description' => 'The {taxonomy_term_data}.tid to which this {forum_access} entry applies.',
        'type'        => 'int',
        'not null'    => TRUE,
        'default'     => 0),
      'rid'           => array(
        'description' => 'The {role}.rid to which this {forum_access} entry applies.',
        'type'        => 'int',
        'not null'    => TRUE,
        'default'     => 0),
      'grant_view'    => array(
        'description' => 'Whether to grant "view" permission.',
        'type'        => 'int',
        'size'        => 'tiny',
        'unsigned'    => TRUE,
        'not null'    => TRUE,
        'default'     => 0),
      'grant_update'  => array(
        'description' => 'Whether to grant "update" permission.',
        'type'        => 'int',
        'size'        => 'tiny',
        'unsigned'    => TRUE,
        'not null'    => TRUE,
        'default'     => 0),
      'grant_delete'  => array(
        'description' => 'Whether to grant "delete" permission.',
        'type'        => 'int',
        'size'        => 'tiny',
        'unsigned'    => TRUE,
        'not null'    => TRUE,
        'default'     => 0),
      'grant_create'  => array(
        'description' => 'Whether to grant "create" permission.',
        'type'        => 'int',
        'size'        => 'tiny',
        'unsigned'    => TRUE,
        'not null'    => TRUE,
        'default'     => 0),
      'priority'  => array(
        'description' => 'The priority of this grant.',
        'type'        => 'int',
        'size'        => 'small',
        'not null'    => TRUE,
        'default'     => 0)),
    'indexes'         => array(
      'tid'           => array('tid'),
      'rid'           => array('rid')),
    'foreign keys'    => array(
      'tid'           => array('taxonomy_term_data' => 'tid'),
      'rid'           => array('role' => 'rid')),
  );
  return $schema;
}

/**
 * Implements hook_enable().
 */
function forum_access_enable() {
  variable_del('forum_access_rids'); // clear cache
  _forum_access_update_table();
}

/**
 * Adds missing default records to the {forum_acces} table.
 */
function _forum_access_update_table() {
  $tids = db_query("SELECT td.tid FROM {taxonomy_term_data} td LEFT JOIN {forum_access} fa ON td.tid = fa.tid WHERE td.vid = :vid AND fa.tid IS NULL", array(
    'vid' => _forum_access_get_vid(),
  ))->fetchCol();
  foreach ($tids as $tid) {
    $record = array(
      'tid' => $tid,
      'rid' => DRUPAL_ANONYMOUS_RID,
      'grant_view' => 1,
    );
    drupal_write_record('forum_access', $record);
    $record['rid'] = DRUPAL_AUTHENTICATED_RID;
    $record['grant_create'] = 1;
    drupal_write_record('forum_access', $record);
  }
}

/**
 * Implements hook_disable().
 */
function forum_access_disable() {
  forum_access_enabled(FALSE);
}

/*
 * Implements hook_uninstall().
 */
function forum_access_uninstall() {
  variable_del('forum_access_allowed_comment_edit_administration_elements');
  variable_del('forum_access_allowed_comment_links_for_create');
  variable_del('forum_access_allowed_comment_links_for_udpate');
  variable_del('forum_access_allowed_comment_links_for_delete');
  variable_del('forum_access_allowed_node_edit_elements');
  variable_del('forum_access_allowed_node_edit_options');
  variable_del('forum_access_batch_threshold');
  variable_del('forum_access_default_template_tid');
  variable_del('forum_access_new_template_tid');
  variable_del('forum_access_provide_moderators_template_variable');
  variable_del('forum_access_rids');
  variable_del('forum_access_update_limit');
}

function forum_access_update_last_removed() {
  return 6105;
}

/**
 * Change our {acl} table records from 'name' to 'number' (D6 legacy).
 */
function forum_access_update_6106() {
  db_update('acl')->expression('number', 'name')->condition('module', 'forum_access')->isNotNull('name')->execute();
  db_update('acl')->fields(array('name' => NULL))->condition('module', 'forum_access')->isNotNull('name')->execute();
}

/**
 * Remove the D6 Forum Moderator role which is not needed anymore.
 */
function forum_access_update_7001() {
  // We don't need the Forum Moderator temporary role anymore.
  if ($moderator_rid = (int) variable_get('forum_access_moderator_rid', NULL)) {
    user_role_delete($moderator_rid);
    variable_del('forum_access_moderator_rid');
  }
}

/**
 * Remove the obsolete 'forum_access_D5_legacy_mode' variable.
 */
function forum_access_update_7002() {
  variable_del('forum_access_D5_legacy_mode');
}