<?php
/* Creator : Ageng / 11 Maret 2022 */
CLASS Image {
	public static function resize($name, $width = 200, $height = false, $copy_to = false, $type = false) {
		$class_image = new Image();
		$size = $class_image->setSize($name, $width, $height, $type);
		if(!empty($size['w']) && !empty($size['h'])) {
			$src_logo = $size['src_img'];
			$thumb_w = $size['w'];
			$thumb_h = $size['h'];
			
			$old_x = $size['old_x'];
			$old_y = $size['old_y'];
			$process_img = imagecreatetruecolor($thumb_w, $thumb_h);
			// ==== SET jika image Transparent =======
			imagealphablending($process_img, false);
			imagesavealpha($process_img,true);
			$transparent = imagecolorallocatealpha($process_img, 255, 255, 255, 127);
			imagefilledrectangle($process_img, 0, 0, $thumb_w, $thumb_h, $transparent);
			// ==========================
			imagecopyresampled($process_img, $src_logo, 0, 0, 0, 0, $thumb_w, $thumb_h, $old_x, $old_y);
			
			$class_image->process_image($size['type'], $process_img, $copy_to);
			
			imagedestroy($src_logo);
			imagedestroy($process_img);
		}else{
			echo json_encode(array("status" => 406, "content" => "Please check image!"));die;
		}
	}
	
	public static function crop($name, $width = 200, $height = false, $copy_to = false, $type = false) {
		$class_image = new Image();
		$size = $class_image->setSize($name, $width, $height, $type);
		if(!empty($size['w']) && !empty($size['h'])) {
			$src_logo = $size['src_img'];
			$thumb_w = $size['w'];
			$thumb_h = $size['h'];
			
			$old_x = $size['old_x'];
			$old_y = $size['old_y'];
			$logo_img = imagecreatetruecolor($thumb_w, $thumb_h);
			// ==== SET jika image Transparent =======
			imagealphablending($logo_img, false);
			imagesavealpha($logo_img,true);
			$transparent = imagecolorallocatealpha($logo_img, 255, 255, 255, 127);
			imagefilledrectangle($logo_img, 0, 0, $thumb_w, $thumb_h, $transparent);
			// ==========================
			imagecopyresampled($logo_img, $src_logo, 0, 0, 0, 0, $thumb_w, $thumb_h, $old_x, $old_y);
			
			$new_w = $thumb_w;
			$new_h = $thumb_h;
			$offset_crop = $class_image->setCrop($width, $height, $new_w, $new_h);
			$x1 = $offset_crop['x'];
			$y1 = $offset_crop['y'];
			$process_img = ImageCreateTrueColor($width, $height);
			imagealphablending($process_img, false);
			imagesavealpha($process_img,true);
			$transparent = imagecolorallocatealpha($process_img, 255, 255, 255, 127);
			imagefilledrectangle($process_img, 0, 0, $width , $height, $transparent);
			imagecopyresampled($process_img, $logo_img,0 ,0 ,$x1, $y1, $width, $height, $width, $height);
			
			$class_image->process_image($size['type'], $process_img, $copy_to);
			
			imagedestroy($src_logo);
			imagedestroy($logo_img);
			imagedestroy($process_img);
		}else{
			echo json_encode(array("status" => 406, "content" => "Please check image!"));die;
		}
	}
	
	function process_image($type, $process_img, $copy_to = false) {
		$filepath_cache = dirname(__DIR__) . "/Assets/img/cache/".substr(strrchr($_SERVER['REQUEST_URI'], '/'), 1);
		if ( preg_match('/jpg|jpeg/', $type) ) {
			if($copy_to) {
				imagejpeg($process_img, $copy_to); 
			}else{
				header("Content-type: {$type}"); 
				imagejpeg($process_img); 
				imagejpeg($process_img, $filepath_cache); 
			}
		}
		if ( preg_match('/png/', $type) ) {
			 if($copy_to) {
				imagepng($process_img, $copy_to); 
			 }else{
				header("Content-type: {$type}"); 
				imagepng($process_img);  
				imagepng($process_img, $filepath_cache); 
			 }
		}
		if ( preg_match('/gif/', $type) ) {
			 if($copy_to) {
				imagegif($process_img, $copy_to); 
			 }else{
				header('Content-type: image/gif'); 
				imagegif($process_img);  
				imagegif($process_img, $filepath_cache);  
			 }
		}
	}
	
   function setCrop($width, $height, $new_width, $new_height) {
		$selisih_w = 0;
		$selisih_h = 0;
		if($new_width > $width) {
			$selisih_w = ($new_width - $width) / 2;
			$selisih_h = 0;
		}elseif($new_height > $height) {
			$selisih_w = 0;
			$selisih_h = ($new_height - $height) / 2;
		}
		return array("x" => $selisih_w, "y" => $selisih_h);
	}

	function setSize($name, $w = 150, $h = false, $type = false){
		$type = "jpg";
		if ( preg_match('/jpg|jpeg/', (($type) ? $type : $name)) ) {
			 $src_img = imagecreatefromjpeg($name);
			 $type = "image/jpeg";
		}

		if ( preg_match('/png/', (($type) ? $type : $name)) ) {
			 $src_img = imagecreatefrompng($name);
			 $type = "image/png";
		}
		
		if ( preg_match('/gif/', (($type) ? $type : $name)) ) {
			 $src_img = imagecreatefromgif($name);
			  $type = "image/gif";
		}
		$new_w = ($w > $h) ? $w : $h;
		$new_h = ($h) ? (($w > $h) ? $w : $h) : $new_w; 
		$old_x = imageSX($src_img);
		$old_y = imageSY($src_img);

		$thumb_w = $new_w;
		$thumb_h = $old_y * ($new_h / $old_x);
		if($old_x > $old_y) {
			$thumb_w = $new_w;
			$thumb_h = $old_y * ($new_h / $old_x);
			
		}elseif($old_x < $old_y) {
			$thumb_w = $old_x * ($new_w / $old_y);
			$thumb_h = $new_h;
		}else {
			$thumb_w = $new_w;
			$thumb_h = $new_h;
		}
		
		$selisih = 0;
		if($thumb_h < $h) {
			$selisih = $h - $thumb_h;
		}elseif($thumb_w < $w) {
			$selisih = $w - $thumb_w;
		} 
		$thumb_h = $thumb_h + $selisih;
		$thumb_w = $thumb_w + $selisih;
			
		return array("src_img" => $src_img, "w" => $thumb_w, "h" => $thumb_h, "old_x" => $old_x, "old_y" => $old_y, "type" => $type);
	}
}