<?php
  /**
   * Copyright (c) 2013 Georg Ehrke georg@ownCloud.com
   * This file is licensed under the Affero General Public License version 3 or
   * later.
   * See the COPYING-README file.
   */
  namespace OC\Preview;
  
  class TXT extends Provider {
  
  	public function getMimeType() {
  		return '/text\/plain/';
  	}
  
  	/**
  	 * @param string $path
  	 * @param int $maxX
  	 * @param int $maxY
  	 * @param boolean $scalingup
  	 * @param \OC\Files\View $fileview
  	 * @return bool|\OC_Image
  	 */
  	public function getThumbnail($path, $maxX, $maxY, $scalingup, $fileview) {
  
  		$content = $fileview->fopen($path, 'r');
  		$content = stream_get_contents($content);
  
  		//don't create previews of empty text files
  		if(trim($content) === '') {
  			return false;
  		}
  
  		$lines = preg_split("/\r
  |
  |\r/", $content);
  
  		$fontSize = 5; //5px
  		$lineSize = ceil($fontSize * 1.25);
  
  		$image = imagecreate($maxX, $maxY);
  		imagecolorallocate($image, 255, 255, 255);
  		$textColor = imagecolorallocate($image, 0, 0, 0);

  		$fontFile  = __DIR__;
  		$fontFile .= '/../../../core';
  		$fontFile .= '/fonts/OpenSans-Regular.ttf';

  		$canUseTTF = function_exists('imagettftext');

  		foreach($lines as $index => $line) {
  			$index = $index + 1;
  
  			$x = (int) 1;

  			$y = (int) ($index * $lineSize);

  			if ($canUseTTF === true) {
  				imagettftext($image, $fontSize, 0, $x, $y, $textColor, $fontFile, $line);
  			} else {
  				$y -= $fontSize;
  				imagestring($image, 1, $x, $y, $line, $textColor);
  			}

  
  			if(($index * $lineSize) >= $maxY) {
  				break;
  			}
  		}
  
  		$image = new \OC_Image($image);
  
  		return $image->valid() ? $image : false;
  	}
  }
  
  \OC\Preview::registerProvider('OC\Preview\TXT');
  
  class MarkDown extends TXT {
  
  	public function getMimeType() {
  		return '/text\/(x-)?markdown/';
  	}
  
  }
  
  \OC\Preview::registerProvider('OC\Preview\MarkDown');