<?php
use Joomla\CMS\Factory;

/**
 * Kunena Component
 * @package         Kunena.Framework
 * @subpackage      Image
 *
 * @copyright       Copyright (C) 2008 - 2022 Kunena Team. All rights reserved.
 * @license         https://www.gnu.org/copyleft/gpl.html GNU/GPL
 * @link            https://www.kunena.org
 **/
defined('_JEXEC') or die;

/**
 * Helper class for image manipulation.
 * @since Kunena
 */
class KunenaImageHelper
{
	/**
	 * Create new re-sized version of the original image.
	 *
	 * @param   string $file      Incoming file
	 * @param   string $folder    Folder for the new image.
	 * @param   string $filename  Filename for the new image.
	 * @param   int    $maxWidth  Maximum width for the image.
	 * @param   int    $maxHeight Maximum height for the image.
	 * @param   int    $quality   Quality for the file (1-100).
	 * @param   int    $scale     See available KunenaImage constants.
	 * @param   int    $crop      Define if you want crop the image.
	 *
	 * @return boolean    True on success.
	 * @since Kunena
	 */
	public static function version($file, $folder, $filename, $maxWidth = 800, $maxHeight = 800, $quality = 70, $scale = KunenaImage::SCALE_INSIDE, $crop = 0)
	{
		// Create target directory if it does not exist.
		if (!KunenaFolder::exists($folder) && !KunenaFolder::create($folder))
		{
			return false;
		}

		// Make sure that index.html exists in the folder.
		KunenaFolder::createIndex($folder);

		try
		{
			$info = KunenaImage::getImageFileProperties($file);
		} 
		catch (Exception $e)
		{
			KunenaError::error($e->getMessage());
			return false;
		}

		if ($info->width > $maxWidth || $info->height > $maxHeight)
		{
			// Make sure that quality is in allowed range.
			if ($quality < 1 || $quality > 100)
			{
				$quality = 70;
			}

			// Calculate quality for PNG.
			if ($info->type == IMAGETYPE_PNG)
			{
				$quality = intval(($quality - 1) / 10);
			}

			$options = array('quality' => $quality);

			
			try 
			{
				// Resize image and copy it to temporary file.
				$image = new KunenaImage($file);

				if ($crop && $info->width > $info->height)
				{
					$image = $image->resize($info->width * $maxHeight / $info->height, $maxHeight, false, $scale);
					$image = $image->crop($maxWidth, $maxHeight);
				}
				elseif ($crop && $info->width < $info->height)
				{
					$image = $image->resize($maxWidth, $info->height * $maxWidth / $info->width, false, $scale);
					$image = $image->crop($maxWidth, $maxHeight);
				}
				else
				{
					$image = $image->resize($maxWidth, $maxHeight, false, $scale);
				}

				$temp = KunenaPath::tmpdir() . '/kunena_' . md5(rand());
				$image->toFile($temp, $info->type, $options);
				unset($image);
			}
			catch (Exception $e)
			{
				KunenaError::error($e->getMessage());
				return false;
			}

			// Move new file to its proper location.
			if (!KunenaFile::move($temp, "{$folder}/{$filename}"))
			{
				unlink($temp);

				return false;
			}
		}
		else
		{
			// Copy original file to the new location.
			if (!KunenaFile::copy($file, "{$folder}/{$filename}"))
			{
				return false;
			}
		}

		return true;
	}
}