<?php

/**
 * @file
 * Installs, updates, and uninstalls IMCE.
 */

/**
 * Implements hook_install().
 */
function imce_install() {
  module_load_include('inc', 'imce', 'inc/imce.core.profiles');
  imce_install_profiles();
  drupal_set_message(st('!module has been installed.', array('!module' => l(st('IMCE'), 'admin/config/media/imce'))));
}

/**
 * Implements hook_uninstall().
 */
function imce_uninstall() {
  variable_del('imce_profiles');
  variable_del('imce_roles_profiles');
  variable_del('imce_settings_textarea');
  variable_del('imce_settings_absurls');
  variable_del('imce_settings_replace');
  variable_del('imce_settings_thumb_method');
  variable_del('imce_settings_disable_private');
  variable_del('imce_custom_content');
  variable_del('imce_custom_process');
  variable_del('imce_custom_init');
  variable_del('imce_custom_scan');
  variable_del('imce_custom_response');
}

/**
 * Updates from 6.x to 7.x.
 */
function imce_update_7000() {
  // Update role-profile assignments
  $roles_profiles = variable_get('imce_roles_profiles', array());
  if (!empty($roles_profiles)) {
    $scheme = variable_get('file_default_scheme', 'public');
    foreach ($roles_profiles as $rid => &$role) {
      $role[$scheme . '_pid'] = $role['pid'];
      unset($role['pid']);
    }
    variable_set('imce_roles_profiles', $roles_profiles);
  }
  // Update textarea ids
  $ids = str_replace(' ', '', variable_get('imce_settings_textarea', ''));
  if ($ids != '') {
    $ids = explode(',', $ids);
    foreach ($ids as &$id) {
      $id .= '*';
    }
    variable_set('imce_settings_textarea', implode(', ', $ids));
  }
}

/**
 * Migrates imce files from {files} to {file_managed}.
 * Removes {imce_files} in favor of {file_usage}.
 */
function imce_update_7001(&$sandbox) {
  if (!db_table_exists('imce_files') || !db_table_exists('files')) {
    return;
  }
  // Initiate progress
  if (!isset($sandbox['progress'])) {
    $sandbox['progress'] = 0;
    $sandbox['last_fid_processed'] = 0;
    $sandbox['max'] = db_query("SELECT COUNT(*) FROM {imce_files} i INNER JOIN {files} f ON i.fid = f.fid")->fetchField();
  }
  // Prepare variables
  $limit = 250;
  $basedir = variable_get('file_directory_path', conf_path() . '/files') . '/';
  $baselen = strlen($basedir);
  $scheme = file_default_scheme() . '://';
  $result = db_query_range('SELECT f.* FROM {imce_files} i INNER JOIN {files} f ON i.fid = f.fid WHERE i.fid > :fid ORDER BY i.fid', 0, $limit, array(':fid' => $sandbox['last_fid_processed']))->fetchAll();
  // Migrate imce files from {files} to {file_managed}
  foreach ($result as $file) {
    $relpath = substr($file->filepath, 0, $baselen) == $basedir ? substr($file->filepath, $baselen) : $file->filepath;
    $file->uri = file_stream_wrapper_uri_normalize($scheme . $relpath);
    unset($file->filepath);
    if (!db_query("SELECT 1 FROM {file_managed} WHERE fid = :fid", array(':fid' => $file->fid))->fetchField()) {
      // Check duplicate uri
      if ($fid = db_query("SELECT fid FROM {file_managed} WHERE uri = :uri", array(':uri' => $file->uri))->fetchField()) {
        $file->fid = $fid;
      }
      else {
        drupal_write_record('file_managed', $file);
      }
    }
    file_usage_add($file, 'imce', 'file', $file->fid);
    $sandbox['progress']++;
    $sandbox['last_fid_processed'] = $file->fid;
  }
  // Drop {imce_files} if the progress is complete.
  $sandbox['#finished'] = empty($sandbox['max']) ? 1 : $sandbox['progress'] / $sandbox['max'];
  if ($sandbox['#finished'] >= 1) {
    db_drop_table('imce_files');
    return t('Migrated IMCE files.');
  }
}