<?php
// $Id$

/**
 * @file
 * directoryimage plugin.
 */

function jcarousel_block_image_exists($nid) {
  return _jcarousel_block_directoryimage_load($nid);
}

function _jcarousel_block_preprocess_images(&$variables) {
  $variables['imagefield_type'] = 'directoryimage';
  $node = $variables['node'];

  $files = _jcarousel_block_directoryimage_load($node->nid);

  $directory = variable_get('jcarousel_block_directoryimage_directory', '/pictures/$nid');
  $thumb_prefix = variable_get('jcarousel_block_directoryimage_prefix', 'thumb_');

  $directory = str_replace('$nid', $node->nid, $directory);
  $root = file_directory_path();
  $path = base_path() . $root . $directory;

  foreach ($files as $file) {
    $thumb_filepath = $path .'/'. $thumb_prefix . $file;
    $image_filepath = $path .'/'. $file;

    if (is_file($thumb_filepath)) {
      // has thumbnail
      list($width, $height, $type, $image_attributes) = @getimagesize($thumb_filepath);
    }
    else{
      // no thumbnail, use original
      list($width, $height, $type, $image_attributes) = @getimagesize($image_filepath);
    }

    $formatted_image = array();
    $formatted_image['path'] = $image_filepath;
    $formatted_image['thumb_path'] = $thumb_filepath;
    $formatted_image['rel'] = $variables['image_rel'];
    $formatted_image['width'] = $width;
    $formatted_image['height'] = $height;
    $formatted_image['alt'] = '';
    $variables['images'][] = $formatted_image;
  }
}

function _jcarousel_block_directoryimage_load($nid, $show_error = false) {
  $files = array();

  $directory = variable_get('jcarousel_block_directoryimage_directory', '/pictures/$nid');
  $thumb_prefix = variable_get('jcarousel_block_directoryimage_prefix', 'thumb_');

  $directory = str_replace('$nid', $nid, $directory);
  $root = file_directory_path();
  $path = $root . $directory;
  if(!is_dir($path)) {
    if ($show_error) {
      drupal_set_message(t('Error in opening directory: %path', array('%path' => $path)), 'error');
    }
    return $files;
  }

  $handle = opendir($path);

  if ($handle = opendir($path)) {
    while (false !== ($file = readdir($handle))) {
      // need ignore more files here. TODO
      if ($file != "." && $file != ".." && $file != "Thumbs.db" && substr($file, 0, strlen($thumb_prefix)) != $thumb_prefix) {
        $files[] = $file;
      }
    }
    closedir($handle);
  }
  return $files;
}