<?php
/*
 *
 *	This is the edited version of vtresize for RT-Themes 
 *	v2.0
 */ 


/*
 * Resize images dynamically using wp built in functions
 * Victor Teixeira
 *
 * php 5.2+
 *
 * Exemplo de uso:
 * 
 * <?php 
 * $thumb = get_post_thumbnail_id(); 
 * $image = rt_vt_resize( $thumb, '', 140, 110, true );
 * ?> 
 * @param int $attach_id
 * @param string $img_url
 * @param int $width
 * @param int $height
 * @param bool $crop
 * @return array
 */ 

	
function rt_vt_resize( $attach_id = null, $img_url = null, $width, $height, $crop = false, $v_crop = false ) {


	$file_path = "";
	$image_src = array();
 
	//correct bools
	$crop = $crop === "false" ? false : $crop;
	$v_crop = $v_crop === "false" ? false : $v_crop;
	$crop = $crop === "true" ? true : $crop;
	$v_crop = $v_crop === "true" ? true : $v_crop;
 
	//clean if thumbnail used instead of full image
	if ( $img_url ) $img_url = rt_clean_thumbnail_ext( $img_url );


	// this is an attachment, so we have the ID
	if ( $attach_id ) {
		$image_src = wp_get_attachment_image_src( $attach_id, 'full' );
		$file_path = get_attached_file( $attach_id );
	// this is not an attachment, let's use the image url
	} else if ( $img_url ) {

		//parse
		$file_path = parse_url( $img_url );
		$file_path = ABSPATH . $file_path['path'];

		/* alternative find paths
			$file_path = parse_url( $img_url );
			$uploads = wp_upload_dir();  
			$file_path = $uploads['basedir'] . str_replace("/wp-content/uploads","", $file_path['path']);
		*/
		
		$orig_size = file_exists($file_path) ? getimagesize( $file_path ) : false;

		
		$image_src[0] = $img_url;
		$image_src[1] = $orig_size[0];
		$image_src[2] = $orig_size[1];
		
		
		//let WP find image urls
		if(!$orig_size) { 
			
			$get_image_id_from_url = rt_get_attachment_id_from_src($img_url); 
			if($get_image_id_from_url){  
				$image_src = wp_get_attachment_image_src( $get_image_id_from_url, 'full' );
				$file_path = get_attached_file( $get_image_id_from_url );  
			}  
		}
	}

	$file_info = pathinfo( $file_path );
	$extension = isset($file_info['extension']) ? '.'. $file_info['extension'] : "";

	if( $extension !== ".gif" ){
			// the image path without the extension
			$no_ext_path = isset( $file_info['dirname'] ) && isset( $file_info['filename'] ) ? $file_info['dirname'].'/'.$file_info['filename'] : "";

			if( isset( $image_src[2] ) && $height <= $image_src[2] && $v_crop != false && $crop == false ){
				$cropped_img_path = $no_ext_path.'-vc-'.$width.'x'.$height.$extension; //cropped vertically
			}else{
				$cropped_img_path = $no_ext_path.'-'.$width.'x'.$height.$extension; //cropped normal
			}

			// checking if the file size is larger than the target size
			// if it is smaller or the same size, stop right here and return
			if ( isset($image_src[1]) && $image_src[1] > $width || isset($image_src[2]) && $image_src[2] > $height ) {

				// the file is larger, check if the resized version already exists (for $crop = true but will also work for $crop = false if the sizes match)
				if ( file_exists( $cropped_img_path ) && $crop != false) {

					$cropped_img_url = str_replace( basename( $image_src[0] ), basename( $cropped_img_path ), $image_src[0] );
					
					$vt_image = array (
						'url' => $cropped_img_url,
						'width' => $width,
						'height' => $height
					);
					
					return $vt_image;
				}

				// $crop = false
				if ( $crop == false && $v_crop == false ) {
					// calculate the size proportionaly
					$proportional_size = wp_constrain_dimensions( $image_src[1], $image_src[2], $width, $height );
					$resized_img_path = $no_ext_path.'-'.$proportional_size[0].'x'.$proportional_size[1].$extension;			

					// checking if the file already exists
					if ( file_exists( $resized_img_path ) ) {
					
						$resized_img_url = str_replace( basename( $image_src[0] ), basename( $resized_img_path ), $image_src[0] );

						$vt_image = array (
							'url' => $resized_img_url,
							'width' => $proportional_size[0],
							'height' => $proportional_size[1]
						);
						
						return $vt_image;
					}
				}


				// $v_crop = true
				if( $height <= $image_src[2] && $v_crop != false  && $crop == false ){

					// calculate the size proportionaly				
					if( $width > $image_src[1] ){
						$proportional_size = array($image_src[1],$height);
					}else{
						$proportional_size = array($width,$height);
					}			


					$resized_img_path = $no_ext_path.'-vc-'.$proportional_size[0].'x'.$proportional_size[1].$extension;			

					// checking if the file already exists
					if ( file_exists( $resized_img_path ) ) {
					
						$resized_img_url = str_replace( basename( $image_src[0] ), basename( $resized_img_path ), $image_src[0] );

						$vt_image = array (
							'url' => $resized_img_url,
							'width' => $proportional_size[0],
							'height' => $proportional_size[1]
						);
						
						return $vt_image;
					}
				}


				// no cache files - let's finally resize it

				$new_img_path = wp_get_image_editor( $file_path );
				if ( ! is_wp_error( $new_img_path ) ) { 

					/*
					*  resize & crop
					*/

				 	//crop images with the height value, and take x and y = 0 
					if( $height <= $image_src[2] && $v_crop != false  && $crop == false ){
						
						if( $width > $image_src[1] ){
							$resized = $new_img_path->crop( 0, 0, $image_src[1], $height ); 
							$v_crop_sfx = "vc-".$image_src[1] . "x" . $height;
						}else{
							$resized = $new_img_path->crop( 0, 0, $width, $height );
							$v_crop_sfx = "vc-".$width . "x" . $height;
						}
							
					}

					if( $v_crop == false ){
						$resized = $new_img_path->resize( $width, $height, $crop ); // regular resize
					}			

					//if no wp error save the new file
					if ( isset( $resized ) && ! is_wp_error( $resized ) ){
						
							if( $height <= $image_src[2] && $v_crop != false  && $crop == false ){
								$dest_file = $new_img_path->generate_filename($v_crop_sfx); //v_crop
							}else{
								$dest_file = $new_img_path->generate_filename();
							}

						$saved = $new_img_path->save( $dest_file );

						if ( ! is_wp_error( $saved ) ){
							$new_img_path = $saved["path"]; 
						}else{
							$new_img_path = $file_path; 
						}
					}else{
						$new_img_path = $file_path; 
					}
				}else{
					$new_img_path = $file_path; 
				}

				$new_img_size = getimagesize( $new_img_path );
				$new_img = str_replace( basename( $image_src[0] ), basename( $new_img_path ), $image_src[0] );

				// resized output
				$vt_image = array (
					'url' => $new_img,
					'width' => $new_img_size[0],
					'height' => $new_img_size[1]
				);
				
				return $vt_image;
			}
	}

	// default output - without resizing
	$vt_image = array (
		'url' => isset($image_src[0]) ? $image_src[0] : "" ,
		'width' => isset($image_src[0]) ? $image_src[1] : "" ,
		'height' => isset($image_src[0]) ? $image_src[2] : "" 
	);
	
	return $vt_image;
}
?>