<?php
/**
 * Created by PhpStorm.
 * User: alex
 * Date: 1/11/19
 * Time: 10:59 AM
 */

class Brizy_Admin_Svg_Main {

	const SVG_MIME = 'image/svg+xml';

	/**
	 * @return Brizy_Admin_Fonts_Main
	 */
	public static function _init() {
		static $instance;
		if ( ! $instance ) {
			$instance = new self();
		}

		return $instance;
	}

	public static function isSvgEnabled() {
		try {
			return Brizy_Editor_Storage_Common::instance()->get( 'svg-upload', true );
		} catch ( \Exception $e ) {
			return true;
		}
	}

	/**
	 * BrizyPro_Admin_Popups constructor.
	 */
	public function __construct() {
		if ( self::isSvgEnabled() ) {
			$this->enableSvgUpload();
		}
	}

	public function enableSvgUpload() {
		add_filter( 'upload_mimes', array( $this, 'addSvgMimeType' ) );
		add_filter( 'wp_check_filetype_and_ext', array( $this, 'wp_check_filetype_and_ext' ), 10, 4 );
		add_filter( 'wp_prepare_attachment_for_js', [ $this, 'wp_prepare_attachment_for_js' ], 10, 3 );
		add_filter( 'wp_handle_upload_prefilter', array( $this, 'wp_handle_upload_prefilter' ) );
		add_filter( 'wp_handle_sideload_prefilter', array( $this, 'wp_handle_upload_prefilter' ) );
	}

	public function disableSvgUpload() {
		remove_filter( 'upload_mimes', array( $this, 'addSvgMimeType' ) );
		remove_filter( 'wp_check_filetype_and_ext', array( $this, 'wp_check_filetype_and_ext' ), 10, 4 );
		remove_filter( 'wp_prepare_attachment_for_js', [ $this, 'wp_prepare_attachment_for_js' ], 10, 3 );
		remove_filter( 'wp_handle_upload_prefilter', array( $this, 'wp_handle_upload_prefilter' ) );
		remove_filter( 'wp_handle_sideload_prefilter', array( $this, 'wp_handle_upload_prefilter' ) );
	}

	public function addSvgMimeType( $mime_types ) {

		$mime_types['svg'] = self::SVG_MIME;

		return $mime_types;
	}

	public function wp_handle_upload_prefilter( $file ) {
		if ( self::SVG_MIME !== $file['type'] ) {
			return $file;
		}
		$dirtySVG  = file_get_contents( $file['tmp_name'] );
		$sanitizer = new \enshrined\svgSanitize\Sanitizer();
		$cleanSVG  = $sanitizer->sanitize( $dirtySVG );
		if ( $cleanSVG ) {
			file_put_contents( $file['tmp_name'], $cleanSVG );
		} else {
			$file['error'] = __( "Sorry, this SVG file can't be sanitized.", 'brizy' );
		}

		return $file;
	}

	/**
	 * @param $data
	 * @param $file
	 * @param $filename
	 * @param $mimes
	 * @param $real_mime
	 *
	 * @return array
	 */
	public function wp_check_filetype_and_ext( $data, $file, $filename, $mimes ) {

		if ( ! $data['ext'] ) {

			$wp_filetype = wp_check_filetype( $filename, $mimes );
			$ext         = $wp_filetype['ext'];
			$type        = $wp_filetype['type'];
			if ( $ext === 'svg' ) {
				return array( 'ext' => $ext, 'type' => $type, 'proper_filename' => false );
			}
		}

		return $data;
	}

	/**
	 * @param $attachment_data
	 * @param $attachment
	 * @param $meta
	 *
	 * @return mixed
	 */
	public function wp_prepare_attachment_for_js( $attachment_data, $attachment, $meta ) {

		if ( 'image' !== $attachment_data['type'] || 'svg+xml' !== $attachment_data['subtype'] ) {
			return $attachment_data;
		}
		if ( ! class_exists( 'SimpleXMLElement' ) ) {
			return $attachment_data;
		}
		$svg = file_get_contents( get_attached_file( $attachment->ID ) );
		if ( ! $svg ) {
			return $attachment_data;
		}
		try {
			$svg    = new \SimpleXMLElement( $svg );
			$width  = (int) $svg['width'];
			$height = (int) $svg['height'];
		} catch ( \Exception $e ) {
			return $attachment_data;
		}
		$src         = $url = $attachment_data['url'];
		$orientation = $height > $width ? 'portrait' : 'landscape';
		// Media Gallery
		$attachment_data['image']         = compact( 'src', 'width', 'height' );
		$attachment_data['thumb']         = compact( 'src', 'width', 'height' );
		$attachment_data['sizes']['full'] = compact( 'url', 'height', 'width', 'orientation' );

		return $attachment_data;
	}

}