<?php

class APLCallback
{//class used just for all the preg_replace_callback function calls

  function postPDFCallback()
  {
    if ($this->post_type == "page")
    {
      $postID = "pg_" . $this->post_id;
    }
    else
    {
      $postID = "po_" . $this->post_id;
    }
    return get_bloginfo('wpurl') . '/wp-content/plugins/kalins-pdf-creation-station/kalins_pdf_create.php?singlepost=' . $postID;
  }

  function postExcerptCallback($matches)
  {


    $pageContent = strip_tags($this->page->post_content);
//return "blah" .$exLength;
    if ($this->page->post_excerpt == "")
    {//if there's no excerpt applied to the post, extract one
//$postCallback->pageContent = strip_tags($page->post_content);
//$str = preg_replace_callback('#\[ *post_excerpt *(length=[\'|\"]([^\'\"]*)[\'|\"])? *\]#', array(&$postCallback, 'postExcerptCallback'), $str);
      if (isset($matches[2]))
      {
        $exLength = intval($matches[2]);
      }
      else
      {
        $exLength = 250;
      }

//return "blah";

      if (strlen($pageContent) > $exLength)
      {
        return strip_shortcodes(substr($pageContent, 0, $exLength)) . "..."; //clean up and return excerpt
      }
      else
      {
        return strip_shortcodes($pageContent);
      }
    }
    else
    {//if there is a post excerpt just use it and don't generate our own
      /* if(isset($matches[2])){//uncomment this if/else statement if you want the manual excerpt to be trimmed to the passed in length
        $exLength = intval($matches[2]);
        return substr($this->page->post_excerpt, 0, $exLength);
        }else{
        return $this->page->post_excerpt;
        } */
      return $this->page->post_excerpt;
    }
  }

  function postDateCallback($matches)
  {
    if (isset($matches[2]))
    {//geez, regex's are awesome. the [2] grabs the second internal portion of the regex, the actual shortcode param value, the () within the ()
      return mysql2date($matches[2], $this->curDate, $translate = true); //translate the wordpress formatted date into whatever date formatting the user passed in
    }
    else
    {
      return mysql2date("m-d-Y", $this->curDate, $translate = true); //otherwise do a simple day-month-year format
    }
  }

  function postCountCallback($matches)
  {
    if (isset($matches[4]))
    {
      $increment = $matches[4];
    }
    else
    {
      $increment = 1; //default is to increment by 1 each loop
    }

    if (isset($matches[2]))
    {
      return $this->itemCount * $increment + $matches[2];
    }
    else
    {
      return $this->itemCount * $increment + 1; //default is to start at 1
    }
  }

  function postMetaCallback($matches)
  {
    $arr = get_post_meta($this->page->ID, $matches[2]);
    return $arr[0];
  }

  function postCategoriesCallback($matches)
  {
    $catString = "";

    $categories = get_the_category($this->page->ID);
    $last_item = end($categories);

    if (isset($matches[2]))
    {
      $delimeter = $matches[2];
    }
    else
    {
      $delimeter = ', ';
    }

    if (isset($matches[4]) && strtolower($matches[4]) == 'false')
    {
      $links = false;
    }
    else
    {
      $links = true;
    }

    foreach ($categories as $category)
    {
      if ($links)
      {
        $catString = $catString . '<a href="' . get_category_link($category->cat_ID) . '" >' . $category->cat_name . '</a>';
      }
      else
      {
        $catString = $catString . $category->cat_name;
      }
      if ($category != $last_item)
      {
        $catString = $catString . $delimeter;
      }
    }

    return $catString;
  }

  function postTagsCallback($matches)
  {

    $catString = "";
    $categories = get_the_tags($this->page->ID);

    if (!$categories)
    {
      return "";
    }

    $last_item = end($categories);

    if (isset($matches[2]))
    {
      $delimeter = $matches[2];
    }
    else
    {
      $delimeter = ', ';
    }

    if (isset($matches[4]) && strtolower($matches[4]) == 'false')
    {
      $links = false;
    }
    else
    {
      $links = true;
    }

    foreach ($categories as $category)
    {
      if ($links)
      {
        $catString = $catString . '<a href="' . get_tag_link($category->term_id) . '" >' . $category->name . '</a>';
      }
      else
      {
        $catString = $catString . $category->name;
      }

      if ($category != $last_item)
      {
        $catString = $catString . $delimeter;
      }
    }

    return $catString;
  }

  function commentCallback($matches)
  {

    /*
      global $post;
      $post = $this->page;//set global post object just for comments
      query_posts('p=' .$this->page->ID);//for some reason this is also necessary so other plugins have access to values normally inside The Loop
     */

    if (defined("KALINS_PDF_COMMENT_CALLBACK"))
    {
      return call_user_func(KALINS_PDF_COMMENT_CALLBACK);
    }

    $comments = get_comments('status=approve&post_id=' . $this->page->ID);
    $commentString = $matches[2];

    foreach ($comments as $comment)
    {
      if ($comment->comment_author_url == "")
      {
        $authorString = $comment->comment_author;
      }
      else
      {
        $authorString = '<a href="' . $comment->comment_author_url . '" >' . $comment->comment_author . "</a>";
      }
      $commentString = $commentString . '<p>' . $authorString . "- " . $comment->comment_author_email . " - " . get_comment_date(null, $comment->comment_ID) . " @ " . get_comment_date(get_option('time_format'), $comment->comment_ID) . "<br />" . $comment->comment_content . "</p>";
    }

    return $commentString . $matches[4];
  }

  function postParentCallback($matches)
  {
    $parentID = $this->page->post_parent;

    if ($parentID == 0)
    {
      return "";
    }

    if ($matches[2] == "false")
    {
      return get_the_title($parentID);
    }
    else
    {
      return '<a href="' . get_permalink($parentID) . '" >' . get_the_title($parentID) . '</a>';
    }
  }

  function functionCallback($matches)
  {//call a user defined function through shortcode
    if (!defined("KALINS_ALLOW_PHP") || KALINS_ALLOW_PHP !== true)
    {
      return ' Error: add define("KALINS_ALLOW_PHP", true); to your wp-config.php for php_function to work. ';
    }

    if (!$matches[2])
    {
      return ' Error: injected PHP function must have a name. Add a name parameter to your php_function shortcode. ';
    }

    /*
      global $post;
      $post = $this->page;
      query_posts('p=' .$this->page->ID);//set global post object and post data so custom function has access to it
     */

    if ($matches[4])
    {
      return call_user_func($matches[2], $this->page, $matches[4]);
    }
    else
    {
      return call_user_func($matches[2], $this->page);
    }
  }

}

?>