<?php

/**
 * @file
 * This file contains all install related hooks.
 */

/**
 * Implements hook_requirements().
 */
function islandora_requirements($phase) {
  $requirements = array();

  // Ensure translations don't break at install time.
  $t = get_t();

  if (!class_exists('XSLTProcessor', FALSE)) {
    $requirements['islandora_xsltprocessor']['title'] = $t('Islandora XSLTProcessor Prerequisite');
    $requirements['islandora_xsltprocessor']['value'] = $t('Not installed');
    $link = l($t('PHP XSL extension'), 'http://us2.php.net/manual/en/book.xsl.php', array('attributes' => array('target' => '_blank')));
    $requirements['islandora_xsltprocessor']['description'] = $t('The !xsllink is required. Check your installed PHP extensions and php.ini file.', array('!xsllink' => $link));
    $requirements['islandora_xsltprocessor']['severity'] = REQUIREMENT_ERROR;
  }

  return $requirements;
}

/**
 * Implements hook_install().
 *
 * @see islandora_islandora_required_objects()
 */
function islandora_install() {
  module_load_include('inc', 'islandora', 'includes/solution_packs');
  islandora_install_solution_pack('islandora');
}

/**
 * Implements hook_uninstall().
 *
 * @see islandora_islandora_required_objects()
 */
function islandora_uninstall() {
  module_load_include('inc', 'islandora', 'includes/solution_packs');
  islandora_install_solution_pack('islandora', 'uninstall');
  // Add new variables to clean up.
  $variables = array(
    'islandora_ds_replace_exclude_enforced',
    'islandora_defer_derivatives_on_ingest',
    'islandora_base_url',
    'islandora_repository_pid',
    'islandora_use_datastream_cache_headers',
    'islandora_show_print_option',
    'islandora_render_drupal_breadcrumbs',
    'islandora_namespace_restriction_enforced',
    'islandora_pids_allowed',
    'islandora_risearch_use_itql_for_walking',
  );
  array_walk($variables, 'variable_del');
}

/**
 * Implements hook_schema().
 */
function islandora_schema() {
  $schema['islandora_authtokens'] = array(
    'description' => 'The hub for all islandora authentication tokens',
    'fields' => array(
      'id' => array(
        'description' => 'key',
        'type' => 'serial',
        'unsigned' => TRUE,
        'not null' => TRUE,
      ),
      'token' => array(
        'description' => 'a unique identifier for this token',
        'type' => 'varchar',
        'length' => 64,
      ),
      'remaining_uses' => array(
        'description' => 'How many uses until this should be removed',
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
      ),
      'uid' => array(
        'description' => 'the user id that requested this token',
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
      ),
      'time' => array(
        'description' => 'when this token was created',
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
      ),
      'pid' => array(
        'description' => 'the pid of the object this token unlocks',
        'type' => 'varchar',
        'length' => 128,
        'not null' => TRUE,
      ),
      'dsid' => array(
        'description' => 'the datasteram id of the object this token unlocks',
        'type' => 'varchar',
        'length' => 32,
        'not null' => TRUE,
      ),
    ),
    'unique keys' => array(
      'id' => array('id'),
    ),
    'primary key' => array('id'),
  );
  return $schema;
}

/**
 * Implements hook_update_N().
 *
 * Add the required table for handling authentication tokens.
 * This is the first instance that has this table.
 */
function islandora_update_7001(&$sandbox) {
  drupal_install_schema('islandora');
  $t = get_t();
  return $t("Islandora database updates complete");
}