<?php

/*
*  rest_api_init
*  Custom /resize route
*
*  @since 3.0
*/

add_action( 'rest_api_init', function () {
   $my_namespace = 'instant-images';
   $my_endpoint = '/resize';
   register_rest_route( $my_namespace, $my_endpoint, 
      array(
         'methods' => 'POST',
         'callback' => 'instant_images_resize_image',
      )
   );
});



/*
*  resize_image
*  Resize Image and run thru media uploader
*
*  @param $request      $_POST
*  @return $response    json
*  @since 3.0
*/

function instant_images_resize_image( WP_REST_Request $request ) {
   
	if (is_user_logged_in() && current_user_can( apply_filters('instant_images_user_role', 'edit_theme_options') )){
   	   	
		error_reporting(E_ALL|E_STRICT);
		
		require_once( ABSPATH . 'wp-admin/includes/file.php' ); // download_url()
		require_once( ABSPATH . 'wp-admin/includes/image.php' ); // wp_read_image_metadata()			
		
		// WP Options
		$options = get_option( 'instant_img_settings' );
      $download_w = isset($options['unsplash_download_w']) ? $options['unsplash_download_w'] : 1600; // width
      $download_h = isset($options['unsplash_download_h']) ? $options['unsplash_download_h'] : 1200; // height			
            
      // Get JSON Data
      $body = json_decode($request->get_body(), true); // Get contents of request body
      $data = json_decode($body['data']); // Get contents of data  
      
      if($body && $data){
         
         $path = sanitize_text_field($data->path); // Path on server
         $name = sanitize_text_field($data->filename); // name
         $filename = $path . $name; // full filename
         $filetype = wp_check_filetype( basename( $filename ), null );
         $title = sanitize_text_field($data->title); // Title
         $alt = sanitize_text_field($data->alt); // Alt text
         $caption = sanitize_text_field($data->caption); // Caption text
         $custom_filename = sanitize_title($data->custom_filename); // Custom filename
         
         $name = (!empty($custom_filename)) ? $custom_filename .'.jpg' : $name;
   
   		// Resize image to max size (set in Settings)
         $image = wp_get_image_editor( $filename );
         if ( ! is_wp_error( $image ) ) {
            $image->resize( $download_w, $download_h, false );
            $image->save( $filename );
         }      
   
   		// Get upload directory
         $wp_upload_dir = wp_upload_dir(); // ['path'] ['basedir']      
         
         // Copy file from uploads/instant-images to a media library directory.
         $new_filename = $wp_upload_dir['path'] .'/'. $name;
         $copy_file = @copy($filename , $new_filename);
         
         if(!$copy_file){
   	      
   	      // Error         
            $response = array( 
         		'success' => false,
         		'msg' => __('Unable to copy image to the media library. Please check your server permissions.', 'instant-images')
      		);
   	      
         } else {           
         
   	      // Build attachment array
   	      $attachment = array(
   		     'guid'=> $wp_upload_dir['url'] . basename( $new_filename ), 
   		     'post_mime_type' => $filetype['type'],
   		     'post_title' => $title,
   		     'post_excerpt' => $caption,
   		     'post_content' => '',
   		     'post_status' => 'inherit'
   	      );	            
   	      
   	      $image_id = wp_insert_attachment($attachment, $new_filename, 0); // Insert as attachment
   	      
            update_post_meta( $image_id, '_wp_attachment_image_alt', $alt ); // Add alt text
   
   	      $attach_data = wp_generate_attachment_metadata( $image_id, $new_filename ); // Generate metadata
   	      wp_update_attachment_metadata( $image_id, $attach_data ); // Add metadata
   	          
   	      
   	      // Response   
   	      if(file_exists($new_filename)){ // If image was uploaded temporary image
   	         
   	         // Success
   	         $response = array(
   	      		'success' => true,
   	      		'msg' => __('Image successfully uploaded to your media library!', 'instant-images'),
   	      		'id' => $image_id,
   	      		'url' => wp_get_attachment_url( $image_id )
   	   		);
   	   		
   	      }else{ 
   		      
   		      // Error         
   	         $response = array( 
   	      		'success' => false,
   	      		'msg' => __('There was an error sending the image to your media library. Please check your server permissions and confirm the upload_max_filesize setting (php.ini) is large enough for the downloaded image (8mb minimum is recommended).', 'instant-images'),
   	      		'id' => '',
   	      		'url' => ''
   	   		);	   		
   	      }
         }      
         
         // Delete temporary image
         if(file_exists($filename)){      
            unlink($filename);
         }         
         
         wp_send_json($response); // Send response as JSON
         
      } else {
         
         $response = array(
      		'success' => false,
      		'msg' => __('There was an error resizing the image, please try again.', 'instant-images'),
      		'id' => '',
      		'url' => ''
   		);         
         wp_send_json($response); // Send response as JSON
         
      }
		
   }
}