<?php

include '../php/classes/page.php';
include 'functions/func_xml.php';

$page = new Page();
$page->init_user();

# make sure the user is logged in before he has access to the
# admin section
if(!$page->user()->check_role('admin'))
  header('Location: login.php?message=1');

$page->attr('title','Administrate FTI: News');
// to make jquery be loaded first
$page->useJSFile('jquery.min.js');
$page->addJSFile('admin.js');
$page->useCSSFile('admin.css');

$page->content('admin/news.php');
$page->layout('admin_layout.php');
$page->menu('admin/menu.php');

# get news posts
$news = xml_get_from_file($FILES['news']);
$newsItems = $news->xpath('newsitem');
$page->data('news',array_reverse($newsItems));

if(isset($_REQUEST['do']))
{
  if($_REQUEST['do'] == 'add' || $_REQUEST['do'] == 'edit')
  {
    $page->addJSFile('admin/textboxbuttons.js');
    // this may be changed below, if the news post is not found
    $page->content('admin/news.add.edit.php');
    
    if($_GET['do'] == 'edit')
    {
      $newsItem = FindNewsItem($newsItems,$_GET['id']);
      
      if(!is_null($newsItem))
      {
        $page->data('newsitem',$newsItem);
        $page->data('editing',true);
      }
      else
      {
        $page->addError('News post does not exist. Please try again.');
        $page->content('admin/news.php');
      }
    }
  }
  else if($_REQUEST['do'] == 'delete')
  {
    $newsItem = FindNewsItem($newsItems,$_GET['id']);
    
    if(!is_null($newsItem))
    {
      $page->content('admin/news.delete.php');
      $page->data('newsitem',$newsItem);
    }
    else
      $page->addError('News post does not exist.  Please try again.');
  }
  else if($_REQUEST['do'] == 'reallyadd')
  {
    $newItem = $news->addChild('newsitem');
    $newItem->addChild('title',stripslashes($_POST['title']));
    $newItem->addChild('text',"<![CDATA[".stripslashes($_POST['text'])."]]>");
        
    if(!empty($_POST['title']) && !empty($_POST['text']))
    {
      $nextId = GetNextId($newsItems);
      $newItem->addAttribute('id',$nextId);
    
      if(file_put_contents($FILES['news'],xml_fix_cdata($news->asXML())))
      {
        $page->addMessage('News item added.');
        $page->data('news',array_reverse($news->xpath('newsitem')));
      }
      else
      {
        $page->addError('Could not add news item.  Please try again later.');
        $page->data('newsitem',$newItem);
        $page->content('admin/news.add.edit.php');
      }
    }
    else
    {
      $page->addError('Please enter a title and text.');
      $page->data('newsitem',$newItem);
      $page->content('admin/news.add.edit.php');
    }
  }
  else if($_REQUEST['do'] == 'reallyedit')
  {
    $newsItemIdx = FindNewsItem($newsItems,$_POST['id'],true);
    $page->data('editing',true);
    
    if(!is_null($newsItemIdx))
    {
      $news->newsitem[$newsItemIdx]->title = stripslashes($_POST['title']);
      $news->newsitem[$newsItemIdx]->text  = "<![CDATA[".stripslashes($_POST['text'])."]]>";
      
      if(!empty($_POST['title']) && !empty($_POST['text']))
      {        
        if(file_put_contents($FILES['news'],xml_fix_cdata($news->asXML())))
          $page->addMessage('News item saved.');
        else
        {
          $page->addError('Could not save news item.  Please try again later.');
          $page->data('newsitem',$news->newsitem[$newsItemIdx]);
          $page->content('admin/news.add.edit.php');
        }
      }
      else
      {
        $page->addError('Please enter a title and text.');
        $page->data('newsitem',$news->newsitem[$newsItemIdx]);
        $page->content('admin/news.add.edit.php');
      }
    }
    else
      $page->addError('News item does not exit.  Please try again.');
  }
  else if($_REQUEST['do'] == 'reallydelete')
  {
    $newsItemIdx = FindNewsItem($newsItems,$_POST['id'],true);
    if(!is_null($newsItemIdx))
    {
      unset($news->newsitem[$newsItemIdx]);
      
      if(file_put_contents($FILES['news'],xml_fix_cdata($news->asXML())))
      {
        $page->addMessage('News item deleted.');
        $page->data('news',array_reverse($news->xpath('newsitem')));
      }
      else
      {
        $page->addError('Could not delete news item.  Please try again later.');
        $page->data('newsitem',$news->newsitem[$newsItemIdx]);
        $page->content('admin/news.delete.php');
      }
    }
    else
      $page->addError('News item does not exist.  Please try again.');
  }
}

$page->process();

################################################################# FindNewsItem #
function FindNewsItem($items, $itemId, $returnIdx = false)
{
  for($c = 0; $c < count($items); $c++)
  {
    if((int)$items[$c]['id'] === (int)$itemId)
      if($returnIdx)
        return $c;
      else
        return $items[$c];
  }
  
  return NULL;
}

#################################################################### GetNextId #
function GetNextId($items)
{
  $largestId = 1;
  for($c = 0; $c < count($items); $c++)
  {
    if($largestId < (int)$items[$c]['id'])
      $largestId = (int)$items[$c]['id'];
  }
  
  return $largestId + 1;
}

?>