<?php

require_once (__DIR__.'/lib.php');

/**
 * Resizes all images allocated in a directory.
 *
 * @param string $srcDir The source directory
 * @param string $dstDir The destination directory
 * @param integer $maxHeight The maximum height of resized image in pixels
 * @param integer $maxWidth The maximum width of resized image in pixels
 * @param boolean $rewrite Wether to rewrite the destination file if it exits
 **/
class Resize extends Vn\Lib\Method
{
	const PARAMS = [
		 'srcDir'
		,'dstDir'
		,'maxHeight'
		,'maxWidth'
		,'rewrite'
		,'crop'
		,'symbolic'
	];

	function run ()
	{

		$options = getopt ('', $params);

		if (!$this->checkParams ($options, self::PARAMS))
			$this->usage ();

		$srcDir = $options['srcDir'];
		$dstDir = $options['dstDir'];
		$maxHeight = $options['maxHeight'];
		$maxWidth = $options['maxWidth'];
		$rewrite = isset ($options['rewrite']);
		$crop = isset ($options['crop']);
		$symbolic = isset ($options['symbolic']);

		set_time_limit (0);

		$count = 0;
		$dir = opendir ($srcDir);

		if ($dir)
		while ($fileName = readdir ($dir))
		if (!in_array ($fileName, ['.', '..']))
		{
			$srcFile = "$srcDir/$fileName";
			$dstFile = "$dstDir/". substr ($fileName, 0, -4).'.png';
			
			if (!file_exists ($dstFile) || $rewrite)
			try
			{
				$symbolicSrc = ($symbolic) ? $srcFile : NULL;
			
				$image = Image::create ($srcFile);
				Image::resizeSave ($image, $dstFile, $maxHeight, $maxWidth, $crop, $symbolicSrc);
				imagedestroy ($image);
				$count++;
			}
			catch (\Exception $e) {}
		}
		
		echo "$count files resized.\n";
	}
}