<?php
/**
* @package mod_artsexylightbox_lite - Art Sexy Lightbox Lite
* @author Artetics.com
* @license GNU GPL v2 or later
* @copyright Artetics.com (c) 2017
* @version 1.9.2
**/

defined("_JEXEC") or die("Restricted access");

function generateThumbnail($imagePath,$convertImage,$previewWidth,$previewHeight,$cropStart,$watermark,$watermarkPosition){	
	$imagePathInfo = pathinfo($imagePath);

	if ($watermark && $convertImage) {
	  	$generatedThumbName = sprintf('%s_%s_%s.%s',
			md5('artsexythumb_' . $convertImage . '_' . $imagePath . '_' . $watermark . $watermarkPosition),
			$previewWidth,
			$previewHeight ,
			$imagePathInfo['extension']);
	}
	else if($watermark){
		$generatedThumbName = sprintf('%s_%s_%s.%s',
			md5('artsexythumb_' . $imagePath . '_' . $watermark . $watermarkPosition),
			$previewWidth,
			$previewHeight ,
			$imagePathInfo['extension']);
	}
	else if($cropStart && $convertImage == "crop"){
		$generatedThumbName = sprintf('%s_%s_%s.%s',
			md5('artsexythumb_' . $convertImage . '_' . str_replace(",","",$cropStart) . '_' . $imagePath),
			$previewWidth,
			$previewHeight,
			$imagePathInfo['extension']);
	}
	else{
		$generatedThumbName = sprintf('%s_%s_%s.%s',
			md5('artsexythumb_' . $convertImage . '_' . $imagePath),
			$previewWidth,
			$previewHeight,
			$imagePathInfo['extension']);
	}

	if (!file_exists(JPATH_SITE . ASLDS . 'images' . ASLDS . 'artsexylightbox_tmp')) {
		mkdir (JPATH_SITE . ASLDS . 'images' . ASLDS . 'artsexylightbox_tmp');
	}
	$thumbPath = JPATH_SITE . ASLDS . 'images' . ASLDS . 'artsexylightbox_tmp' . ASLDS . $generatedThumbName;
	
	//if generated thumb doesn't already exist, make a new one
	if (!@file_exists($thumbPath)) {
		$img = asido::image($imagePath, $thumbPath);

		if ($convertImage == 'crop' && $previewWidth && $previewHeight) {
			//$cropStart is x,y coordinates in pixels?
			if ($cropStart) {
				$cropStartArray = explode(',', $cropStart);
				Asido::crop($img, $cropStartArray[0], $cropStartArray[1], $previewWidth, $previewHeight);
			} else {
				Asido::crop($img, 0, 0, $previewWidth, $previewHeight);
			}
		}else if ($convertImage == 'crop_resize' && $previewWidth && $previewHeight) {
			$imgSize = getimagesize($imagePath);
			$imgWidth = $imgSize[0];
			$imgHeight = $imgSize[1];
			if ($imgWidth > $imgHeight) {
				$diff = ($imgWidth - $imgHeight)/2;
				Asido::crop($img, $diff, 0, ($imgWidth - 2*$diff), $imgHeight);
			} else if ($imgWidth < $imgHeight) {
				$diff = ($imgHeight - $imgWidth)/2;
				Asido::crop($img, 0, $diff, $imgWidth, ($imgHeight - 2*$diff));
			}
			Asido::resize($img, $previewWidth, $previewHeight, ASIDO_RESIZE_STRETCH);
		}else if (strstr($convertImage, 'rotate')) {
			$rotateAttrs = explode(':', $convertImage);
			if (!$rotateAttrs[1]) {
				$rotateAttrs[1] = 90;
			}
			Asido::rotate($img, $rotateAttrs[1]);
		}else if ($convertImage == 'grayscale') {
			Asido::greyScale($img);
		}else {
			if ($previewHeight && !$previewWidth) {
				Asido::height($img, $previewHeight);
			} else if ($previewWidth && !$previewHeight) {
				Asido::width($img, $previewWidth);
			} else if($previewHeight && $previewWidth){
				Asido::resize($img, $previewWidth, $previewHeight, ASIDO_RESIZE_STRETCH);
			}
		}

		if ($watermark) {
			switch($watermarkPosition) {
			  case 'topleft':
			  Asido::watermark($img, JPATH_SITE . ASLDS . str_replace('/', ASLDS, $watermark), ASIDO_WATERMARK_TOP_LEFT);
			  break;
			  
			  case 'topright':
			  Asido::watermark($img, JPATH_SITE . ASLDS . str_replace('/', ASLDS, $watermark), ASIDO_WATERMARK_TOP_RIGHT);
			  break;
			  
			  case 'bottomleft':
			  Asido::watermark($img, JPATH_SITE . ASLDS . str_replace('/', ASLDS, $watermark), ASIDO_WATERMARK_BOTTOM_LEFT);
			  break;
			  
			  case 'bottomright':
			  Asido::watermark($img, JPATH_SITE . ASLDS . str_replace('/', ASLDS, $watermark), ASIDO_WATERMARK_BOTTOM_RIGHT);
			  break;
			  
			  default:
			  Asido::watermark($img, JPATH_SITE . ASLDS . str_replace('/', ASLDS, $watermark), ASIDO_WATERMARK_TOP_LEFT);
			  break;
			}
		}

		$img->save(ASIDO_OVERWRITE_ENABLED);
	}
	$previewImagePath = JURI::root() . "images/artsexylightbox_tmp/$generatedThumbName";
	return $previewImagePath;
}

?>