<?php
/**
 * @file
 * The main module file for the module.
 */

/**
 * Implements hook_wysiwyg_plugin().
 */
function wysiwyg_ckeditor_ckfinder_bridge_wysiwyg_plugin($editor, $version) {

  if ($editor === 'ckeditor') {
    $ckfinder_path = libraries_get_path('ckfinder');
    $base_path = base_path();
    $settings = array(
      'filebrowserBrowseUrl'      => $base_path . $ckfinder_path
      . '/ckfinder.html',
      'filebrowserImageBrowseUrl' => $base_path . $ckfinder_path
      . '/ckfinder.html?Type=Images',
      'filebrowserUploadUrl'      => $base_path . $ckfinder_path
      . '/core/connector/php/connector.php?command=QuickUpload&type=Files',
      'filebrowserImageUploadUrl' => $base_path . $ckfinder_path
      . '/core/connector/php/connector.php?command=QuickUpload&type=Images',
    );

    return array(
      'ckfinder'     => array(
        'extensions' => array('ckfinder' => t('CKFinder')),
        'path'       => $ckfinder_path ,
        'filename'   => 'ckfinder.js',
        'url'        => 'http://ckfinder.com/',
        'load'       => FALSE,
        'internal'   => FALSE,
        'options'    => $settings,
      ),
    );
  }
}

/**
 * Implements hook_perm().
 */
function wysiwyg_ckeditor_ckfinder_bridge_permission() {
  $arr = array();
  if (libraries_get_path('ckfinder')) {
    $arr['allow CKFinder file uploads'] = array(
      'title' => t('allow CKFinder file uploads'),
      'description' => t('Allows the user to use CKFinder with CKEditor'),
    );
  }
  $arr['administer CKFinder'] = array(
    'title' => t('Administer CKFinder'),
    'description' => t('Allows the user to Administer CKFinder configurations'),
  );
  return $arr;
}

/**
 * Implements of hook_menu().
 */
function wysiwyg_ckeditor_ckfinder_bridge_menu() {
  $items['admin/config/content/ckfinder'] = array(
    'title' => 'CKFinder',
    'description' => 'Administer CKFinder configuration',
    'access arguments' => array('administer CKFinder'),
    'page callback' => 'wysiwyg_ckeditor_ckfinder_bridge_admin',
  );
  return $items;
}

/**
 * Administration form.
 *
 * Runs some basic checks before creating the administration form
 */
function wysiwyg_ckeditor_ckfinder_bridge_admin() {
  global $base_path;

  // Check that CKFinder is installed.
  $ckfinder_path = libraries_get_path('ckfinder');
  if (empty($ckfinder_path)) {
    drupal_set_message(check_plaint(t('The WYSIWYG/CKEDITOR/CKFINDER bridge module requires CKFinder to be installed in the libraries path. Please install it, then re-enable this module.')), 'error');
  }

  // Check that we have write permissions on the configuration file.
  $full_ckfinder_path = $_SERVER['DOCUMENT_ROOT'] . DIRECTORY_SEPARATOR . substr($base_path, 1) . $ckfinder_path;
  $conf_file_path     = $full_ckfinder_path . DIRECTORY_SEPARATOR . 'config.php';
  $conf_dir           = dirname($conf_file_path);
  if (!file_prepare_directory($conf_dir)) {
    drupal_set_message(t('The WYSIWYG/CKEDITOR/CKFINDER bridge module requires write permissions to the :dir directory', array(':dir' => $full_ckfinder_path)), 'error');
  }

  return drupal_get_form('wysiwyg_ckeditor_ckfinder_bridge_admin_form');

}

/**
 * Build the Admin form using Drupal form builder API.
 */
function wysiwyg_ckeditor_ckfinder_bridge_admin_form() {
  global $base_path;

  $items = array();

  $items['ckfinder_files_location'] = array(
    '#type' => 'textfield',
    '#title' => t('The location where CKFinder will save files - trailing / is required'),
    '#default_value' => variable_get('ckfinder_files_location', $base_path . 'sites/default/files/'),
    '#size' => 64,
    '#maxlength' => 255,
    '#attributes' => array(),
    '#description' => t("The location where CKFinder will save files - trailing / is required."),
    '#required' => TRUE,
  );

  $ckfinder_path = libraries_get_path('ckfinder');
  $default = $base_path . $ckfinder_path . '/ckfinder.html';
  $items['ckfinder_file_browswer'] = array(
    '#type' => 'textfield',
    '#title' => t('The location where CKFinder browser is located - trailing / is required.'),
    '#default_value' => variable_get('ckfinder_file_browswer', $default),
    '#size' => 64,
    '#maxlength' => 255,
    '#attributes' => array(),
    '#description' => t("The location where CKFinder browser is located - trailing / is required. Only change this if the default settings fail."),
    '#required' => TRUE,
  );

  $items['ckfinder_licence_name'] = array(
    '#type' => 'textfield',
    '#title' => t('CKFinder licence name'),
    '#default_value' => variable_get('ckfinder_licence_name', ''),
    '#size' => 64,
    '#maxlength' => 255,
    '#attributes' => array(),
    '#description' => t("The licence name without which CKFinder will run as a demo version."),
    '#required' => FALSE,
  );

  $items['ckfinder_licence_key'] = array(
    '#type' => 'textfield',
    '#title' => t('CKFinder licence key'),
    '#default_value' => variable_get('ckfinder_licence_key', ''),
    '#size' => 64,
    '#maxlength' => 255,
    '#attributes' => array(),
    '#description' => t("The licence key without which CKFinder will run as a demo version."),
    '#required' => FALSE,
  );

  $items['chmod_folders'] = array(
    '#type' => 'textfield',
    '#title' => t('chmod folders'),
    '#default_value' => variable_get('chmod_folders', '0777'),
    '#size' => 8,
    '#maxlength' => 8,
    '#attributes' => array(),
    '#description' => t("Folder permissions to be set. Set to 0 to disable this feature, or if using Windows."),
    '#required' => FALSE,
  );

  $items['chmod_files'] = array(
    '#type' => 'textfield',
    '#title' => t('chmod files'),
    '#default_value' => variable_get('chmod_files', '0755'),
    '#size' => 8,
    '#maxlength' => 8,
    '#attributes' => array(),
    '#description' => t("Folder permissions to be set. Set to 0 to disable this feature, or if using Windows."),
    '#required' => FALSE,
  );

  return system_settings_form($items);
}

/**
 * Validation of the settings form.
 *
 * Uses the form API validation hook
 */
function wysiwyg_ckeditor_ckfinder_bridge_admin_form_validate($form, &$form_state) {

  global $base_path;
  $directory = $_SERVER['DOCUMENT_ROOT'] . $form_state['values']['ckfinder_files_location'];

  if (!file_exists($directory) || !touch($directory)) {
    form_set_error('ckfinder_files_location', t('Unable to write to this file location'));
  }

}

/**
 * Standard hook help.
 */
function wysiwyg_ckeditor_ckfinder_bridge_help($path, $arg) {
  switch ($path) {
    case 'admin/help#wysiwyg_ckeditor_ckfinder_bridge':
      $output = '';
      $output .= '<h3>' . t('Description') . '</h3>';
      $output .= '<p>' . t("This module allows you to use CKFinder with the WYSIWYG version of CKEditor.
This module requires both the libraries and WYSIWYG modules. Please read the
installation instructions carefully.") . '<p>';
      $output .= t(
        'Please see !link',
        array('!link' => l(t('the module project page'), 'http://drupal.org/sandbox/jrsinclair/1348830'))
      );
      return $output;
    break;
  }
}