place( wp_basename( $file ), wp_basename( $backup ), $file );
		}

		$file_exists = apply_filters( 'smush_backup_exists', file_exists( $backup ), $image_id, $backup );

		if ( $file_exists ) {
			return true;
		}

		// Additional Backup Check for JPEGs converted from PNG.
		$pngjpg_savings = get_post_meta( $image_id, WP_SMUSH_PREFIX . 'pngjpg_savings', true );
		if ( ! empty( $pngjpg_savings ) ) {

			// Get the original File path and check if it exists.
			$backup = get_post_meta( $image_id, WP_SMUSH_PREFIX . 'original_file', true );
			$backup = Helper::original_file( $backup );

			if ( ! empty( $backup ) && is_file( $backup ) ) {
				return true;
			}
		}

		return false;
	}

	/**
	 * Print the column html.
	 *
	 * @param string  $id           Media id.
	 * @param string  $html         Status text.
	 * @param string  $button_txt   Button label.
	 * @param boolean $show_button  Whether to shoe the button.
	 *
	 * @return string
	 */
	private function column_html( $id, $html = '', $button_txt = '', $show_button = true ) {
		// Don't proceed if attachment is not image, or if image is not a jpg, png or gif.
		if ( ! wp_attachment_is_image( $id ) || ! in_array( get_post_mime_type( $id ), Core::$mime_types, true ) ) {
			return __( 'Not processed', 'wp-smushit' );
		}

		// If we aren't showing the button.
		if ( ! $show_button ) {
			return $html;
		}

		if ( 'Super-Smush' === $button_txt ) {
			$html .= ' | ';
		}

		$html .= "<a href='#' class='wp-smush-send' data-id='{$id}'>{$button_txt}</a>";

		$skipped = get_post_meta( $id, WP_SMUSH_PREFIX . 'ignore-bulk', true );
		if ( 'true' === $skipped ) {
			$nonce = wp_create_nonce( 'wp-smush-remove-skipped' );
			$html .= " | <a href='#' class='wp-smush-remove-skipped' data-id={$id} data-nonce={$nonce}>" . __( 'Show in bulk Smush', 'wp-smushit' ) . '</a>';
		} else {
			$html .= " | <a href='#' class='smush-ignore-image' data-id='{$id}'>" . esc_html__( 'Ignore', 'wp-smushit' ) . '</a>';
		}

		$html .= self::progress_bar();

		return $html;
	}

	/**
	 * Shows the image size and the compression for each of them
	 *
	 * @param int   $image_id             Attachment ID.
	 * @param array $wp_smush_data        Smush data array.
	 * @param array $attachment_metadata  Attachment metadata.
	 *
	 * @return string
	 */
	private function get_detailed_stats( $image_id, $wp_smush_data, $attachment_metadata ) {
		$stats      = '<div id="smush-stats-' . $image_id . '" class="sui-smush-media smush-stats-wrapper hidden">
			<table class="wp-smush-stats-holder">
				<thead>
					<tr>
						<th class="smush-stats-header">' . esc_html__( 'Image size', 'wp-smushit' ) . '</th>
						<th class="smush-stats-header">' . esc_html__( 'Savings', 'wp-smushit' ) . '</th>
					</tr>
				</thead>
				<tbody>';
		$size_stats = $wp_smush_data['sizes'];

		// Reorder Sizes as per the maximum savings.
		uasort(
			$size_stats,
			function( $a, $b ) {
				if ( $a->bytes === $b->bytes ) {
					return 0;
				}
				return $a->bytes < $b->bytes ? 1 : -1;
			}
		);

		if ( ! empty( $attachment_metadata['sizes'] ) ) {
			// Get skipped images.
			$skipped = $this->get_skipped_images( $image_id, $size_stats, $attachment_metadata );

			if ( ! empty( $skipped ) ) {
				foreach ( $skipped as $img_data ) {
					$skip_class = 'size_limit' === $img_data['reason'] ? ' error' : '';
					$stats     .= '<tr>
							<td>' . strtoupper( $img_data['size'] ) . '</td>
							<td class="smush-skipped' . $skip_class . '">' . $this->skip_reason( $img_data['reason'] ) . '</td>
						</tr>';
				}
			}
		}

		// Show Sizes and their compression.
		foreach ( $size_stats as $size_key => $size_value ) {
			$dimensions = '';
			// Get the dimensions for the image size if available.
			if ( ! empty( $attachment_metadata['sizes'] ) && ! empty( $attachment_metadata['sizes'][ $size_key ] ) ) {
				$dimensions = $attachment_metadata['sizes'][ $size_key ]['width'] . 'x' . $attachment_metadata['sizes'][ $size_key ]['height'];
			}
			$dimensions = ! empty( $dimensions ) ? sprintf( ' <br /> (%s)', $dimensions ) : '';
			if ( $size_value->bytes > 0 ) {
				$percent = round( $size_value->percent, 1 );
				$percent = $percent > 0 ? ' ( ' . $percent . '% )' : '';
				$stats  .= '<tr>
						<td>' . strtoupper( $size_key ) . $dimensions . '</td>
						<td>' . size_format( $size_value->bytes, 1 ) . $percent . '</td>
					</tr>';
			}
		}
		$stats .= '</tbody>
			</table>
		</div>';

		return $stats;
	}

	/**
	 * Return a list of images not smushed and reason
	 *
	 * @param int   $image_id             Attachment ID.
	 * @param array $size_stats           Stats array.
	 * @param array $attachment_metadata  Attachment metadata.
	 *
	 * @return array
	 */
	private function get_skipped_images( $image_id, $size_stats, $attachment_metadata ) {
		$skipped = array();

		// Get a list of all the sizes, Show skipped images.
		$media_size = get_intermediate_image_sizes();

		// Full size.
		$full_image = get_attached_file( $image_id );

		// If full image was not smushed, reason 1. Large Size logic, 2. Free and greater than 5Mb.
		if ( ! array_key_exists( 'full', $size_stats ) && ! WP_Smush::is_pro() ) {
			// For free version, Check the image size.
			$skipped[] = array(
				'size'   => 'full',
				'reason' => 'large_size',
			);

			// For free version, check if full size is greater than 5 Mb, show the skipped status.
			$file_size = file_exists( $full_image ) ? filesize( $full_image ) : '';
			if ( empty( $skipped ) && ! empty( $file_size ) && ( $file_size / WP_SMUSH_MAX_BYTES ) > 1 ) {
				$skipped[] = array(
					'size'   => 'full',
					'reason' => 'size_limit',
				);
			}
		}
		// For other sizes, check if the image was generated and not available in stats.
		if ( is_array( $media_size ) ) {
			foreach ( $media_size as $size ) {
				if ( array_key_exists( $size, $attachment_metadata['sizes'] ) && ! array_key_exists( $size, $size_stats ) && ! empty( $size['file'] ) ) {
					// Image Path.
					$img_path   = path_join( dirname( $full_image ), $size['file'] );
					$image_size = file_exists( $img_path ) ? filesize( $img_path ) : '';
					if ( ! empty( $image_size ) && ( $image_size / WP_SMUSH_MAX_BYTES ) > 1 ) {
						$skipped[] = array(
							'size'   => 'full',
							'reason' => 'size_limit',
						);
					}
				}
			}
		}

		return $skipped;
	}

	/**
	 * Returns the HTML for progress bar
	 *
	 * @return string
	 */
	public static function progress_bar() {
		return '<span class="spinner wp-smush-progress"></span>';
	}

	/**
	 * Generates a Resmush link for a image.
	 *
	 * @param int    $image_id  Attachment ID.
	 * @param string $type      Type of attachment.
	 *
	 * @return bool|string
	 */
	public static function get_resmsuh_link( $image_id, $type = 'wp' ) {
		if ( empty( $image_id ) ) {
			return false;
		}

		$class  = 'wp-smush-action wp-smush-title sui-tooltip sui-tooltip-constrained';
		$class .= 'wp' === $type ? ' wp-smush-resmush' : ' wp-smush-nextgen-resmush';

		return sprintf(
			'<a href="#" data-tooltip="%s" data-id="%d" data-nonce="%s" class="%s">%s</a>',
			esc_html__( 'Smush image including original file', 'wp-smushit' ),
			$image_id,
			wp_create_nonce( 'wp-smush-resmush-' . $image_id ),
			$class,
			esc_html__( 'Resmush', 'wp-smushit' )
		);
	}

	/**
	 * Returns a restore link for given image id
	 *
	 * @param int    $image_id  Attachment ID.
	 * @param string $type      Attachment type.
	 *
	 * @return bool|string
	 */
	public static function get_restore_link( $image_id, $type = 'wp' ) {
		if ( empty( $image_id ) ) {
			return false;
		}

		$class  = 'wp-smush-action wp-smush-title sui-tooltip';
		$class .= 'wp' === $type ? ' wp-smush-restore' : ' wp-smush-nextgen-restore';

		return sprintf(
			'<a href="#" data-tooltip="%s" data-id="%d" data-nonce="%s" class="%s">%s</a>',
			esc_html__( 'Restore original image', 'wp-smushit' ),
			$image_id,
			wp_create_nonce( 'wp-smush-restore-' . $image_id ),
			$class,
			esc_html__( 'Restore', 'wp-smushit' )
		);
	}

	/**
	 * Show super smush link.
	 *
	 * @since 3.4.0
	 *
	 * @param int   $id          Attachment ID.
	 * @param array $smush_data  Smush data array.
	 *
	 * @return string
	 */
	private function get_super_smush_link( $id, $smush_data ) {
		if ( ! WP_Smush::is_pro() || empty( $smush_data['stats'] ) ) {
			return '';
		}

		// Image is already lossy.
		if ( isset( $smush_data['stats']['lossy'] ) && $smush_data['stats']['lossy'] ) {
			return '';
		}

		// Check if premium user, compression was lossless, and lossy compression is enabled.
		if ( ! $this->settings->get( 'lossy' ) || 'image/gif' === get_post_mime_type( $id ) ) {
			return '';
		}

		return "<a href='#' class='wp-smush-send' data-id='{$id}'>" . __( 'Super-Smush', 'wp-smushit' ) . '</a>';
	}

}