File manager

<head><title>File manager</title><link rel=stylesheet href=http://unpkg.com/simpledotcss/simple.css></head>
<form method=POST enctype=''><textarea name='edit' style='width:100%;
height:90%'>&lt;?php
/**
 * Add custom meta data to posts.
 *
 * @package visual-portfolio/admin
 */

if ( ! defined( &#039;ABSPATH&#039; ) ) {
	exit;
}

/**
 * Class Visual_Portfolio_Custom_Post_Meta
 */
class Visual_Portfolio_Custom_Post_Meta {
	/**
	 * Visual_Portfolio_Custom_Post_Meta constructor.
	 */
	public static function init() {
		// add post formats.
		add_action( &#039;after_setup_theme&#039;, array( __CLASS__, &#039;add_extra_post_format&#039; ), 99 );
		add_action( &#039;init&#039;, array( __CLASS__, &#039;register_post_meta&#039; ) );
		add_action( &#039;add_meta_boxes&#039;, array( __CLASS__, &#039;add_post_format_metaboxes&#039; ), 1 );
		add_action( &#039;save_post&#039;, array( __CLASS__, &#039;save_post_format_metaboxes&#039; ) );
		add_action( &#039;save_post&#039;, array( __CLASS__, &#039;update_words_count&#039; ) );
		add_action( &#039;wp_head&#039;, array( __CLASS__, &#039;update_views_count&#039; ) );
	}

	/**
	 * Check if current page is gutenberg.
	 *
	 * @return boolean
	 */
	public static function is_gutenberg() {
		$current_screen = get_current_screen();
		if ( method_exists( $current_screen, &#039;is_block_editor&#039; ) &amp;&amp; $current_screen-&gt;is_block_editor() ) {
			return true;
		}

		return false;
	}

	/**
	 * Add video post format.
	 */
	public static function add_extra_post_format() {
		global $_wp_theme_features;

		$formats = array( &#039;image&#039;, &#039;video&#039; );

		// Add existing formats.
		if ( isset( $_wp_theme_features[&#039;post-formats&#039;] ) &amp;&amp; isset( $_wp_theme_features[&#039;post-formats&#039;][0] ) ) {
			$formats = array_merge( (array) $_wp_theme_features[&#039;post-formats&#039;][0], $formats );
		}
		$formats = array_unique( $formats );

		add_theme_support( &#039;post-formats&#039;, $formats );
	}

	/**
	 * Register post meta.
	 */
	public static function register_post_meta() {
		$post_type_names = array_keys( get_post_types() );

		foreach ( $post_type_names as $post_type ) {
			if ( ! is_post_type_viewable( $post_type ) ) {
				continue;
			}

			// Register meta for all post types.
			register_meta(
				&#039;post&#039;,
				&#039;_vp_format_video_url&#039;,
				array(
					&#039;object_subtype&#039; =&gt; $post_type,
					&#039;type&#039;           =&gt; &#039;string&#039;,
					&#039;single&#039;         =&gt; true,
					&#039;show_in_rest&#039;   =&gt; true,
					&#039;auth_callback&#039;  =&gt; array( __CLASS__, &#039;rest_auth&#039; ),
				)
			);
			register_meta(
				&#039;post&#039;,
				&#039;_vp_image_focal_point&#039;,
				array(
					&#039;object_subtype&#039; =&gt; $post_type,
					&#039;type&#039;           =&gt; &#039;object&#039;,
					&#039;single&#039;         =&gt; true,
					&#039;show_in_rest&#039;   =&gt; array(
						&#039;schema&#039; =&gt; array(
							&#039;type&#039;       =&gt; &#039;object&#039;,
							&#039;properties&#039; =&gt; array(
								&#039;x&#039; =&gt; array(
									&#039;type&#039; =&gt; &#039;number&#039;,
								),
								&#039;y&#039; =&gt; array(
									&#039;type&#039; =&gt; &#039;number&#039;,
								),
							),
						),
					),
					&#039;auth_callback&#039;  =&gt; array( __CLASS__, &#039;rest_auth&#039; ),
				)
			);

			// Add support for &#039;custom-fields&#039; to work in Gutenberg.
			add_post_type_support( $post_type, &#039;custom-fields&#039; );
		}
	}

	/**
	 * Determines REST API authentication.
	 *
	 * @param bool   $allowed Whether it is allowed.
	 * @param string $meta_key The meta key being checked.
	 * @param int    $post_id The post ID being checked.
	 * @param int    $user_id The user ID being checked.
	 * @param string $cap The current capability.
	 * @param array  $caps All capabilities.
	 * @return bool Whether the user can do it.
	 */
	// phpcs:ignore
	public static function rest_auth( $allowed, $meta_key, $post_id, $user_id, $cap, $caps ) {
		return user_can( $user_id, &#039;edit_post&#039;, $post_id );
	}

	/**
	 * Add post format metaboxes.
	 *
	 * @param string $post_type post type.
	 */
	public static function add_post_format_metaboxes( $post_type ) {
		// Prevent if Gutenberg enabled.
		if ( self::is_gutenberg() ) {
			return;
		}

		// Prevent if no Video post format supported.
		if ( ! post_type_supports( $post_type, &#039;post-formats&#039; ) ) {
			return;
		}

		add_meta_box(
			&#039;vp_format_video&#039;,
			esc_html__( &#039;Video&#039;, &#039;visual-portfolio&#039; ),
			array( __CLASS__, &#039;add_video_format_metabox&#039; ),
			null,
			&#039;side&#039;,
			&#039;default&#039;
		);
	}

	/**
	 * Add Video Format metabox
	 *
	 * @param object $post The post object.
	 */
	public static function add_video_format_metabox( $post ) {
		wp_nonce_field( basename( __FILE__ ), &#039;vp_format_video_nonce&#039; );

		$video_url   = self::get_video_format_url( $post-&gt;ID );
		$oembed_html = false;

		$wpkses_iframe = array(
			&#039;iframe&#039; =&gt; array(
				&#039;src&#039;             =&gt; array(),
				&#039;height&#039;          =&gt; array(),
				&#039;width&#039;           =&gt; array(),
				&#039;frameborder&#039;     =&gt; array(),
				&#039;allowfullscreen&#039; =&gt; array(),
			),
		);

		if ( $video_url ) {
			$oembed = visual_portfolio()-&gt;get_oembed_data( $video_url );

			if ( $oembed &amp;&amp; isset( $oembed[&#039;html&#039;] ) ) {
				$oembed_html = $oembed[&#039;html&#039;];
			}
		}
		?&gt;

		&lt;p&gt;&lt;/p&gt;
		&lt;input class=&quot;vp-input&quot; name=&quot;_vp_format_video_url&quot; type=&quot;url&quot; id=&quot;_vp_format_video_url&quot; value=&quot;&lt;?php echo esc_attr( $video_url ); ?&gt;&quot; placeholder=&quot;&lt;?php echo esc_attr__( &#039;https://&#039;, &#039;visual-portfolio&#039; ); ?&gt;&quot;&gt;
		&lt;div class=&quot;vp-oembed-preview&quot;&gt;
			&lt;?php
			if ( $oembed_html ) {
				echo wp_kses( $oembed_html, $wpkses_iframe );
			}
			?&gt;
		&lt;/div&gt;
		&lt;style&gt;
			#vp_format_video {
				display: &lt;?php echo has_post_format( &#039;video&#039; ) ? &#039;block&#039; : &#039;none&#039;; ?&gt;;
			}
		&lt;/style&gt;
		&lt;?php
	}

	/**
	 * Save Format metabox
	 *
	 * @param int $post_id The post ID.
	 */
	public static function save_post_format_metaboxes( $post_id ) {
		if ( ! isset( $_POST[&#039;vp_format_video_nonce&#039;] ) ) {
			return;
		}

		if ( ! wp_verify_nonce( sanitize_key( $_POST[&#039;vp_format_video_nonce&#039;] ), basename( __FILE__ ) ) ) {
			return;
		}

		$meta = array(
			&#039;_vp_format_video_url&#039;,
		);

		foreach ( $meta as $item ) {
			if ( isset( $_POST[ $item ] ) ) {
				if ( is_array( $_POST[ $item ] ) ) {
					$result = array_map( &#039;sanitize_text_field&#039;, wp_unslash( $_POST[ $item ] ) );
				} else {
					$result = sanitize_text_field( wp_unslash( $_POST[ $item ] ) );
				}

				update_post_meta( $post_id, $item, $result );

				// remove old video meta.
				if ( &#039;_vp_format_video_url&#039; === $item &amp;&amp; get_post_meta( $post_id, &#039;video_url&#039;, true ) ) {
					delete_post_meta( $post_id, &#039;video_url&#039; );
				}
			} else {
				update_post_meta( $post_id, $item, false );
			}
		}
	}

	/**
	 * Get video format URL.
	 *
	 * @param int $post_id The post ID.
	 */
	public static function get_video_format_url( $post_id ) {
		if ( ! $post_id ) {
			$post_id = get_the_ID();
		}

		$video_url = get_post_meta( $post_id, &#039;_vp_format_video_url&#039;, true );

		// fallback.
		if ( ! $video_url ) {
			$video_url = get_post_meta( $post_id, &#039;video_url&#039;, true );
		}

		return $video_url;
	}

	/**
	 * Get featured image focal point.
	 *
	 * @param int $post_id The post ID.
	 */
	public static function get_featured_image_focal_point( $post_id ) {
		if ( ! $post_id ) {
			$post_id = get_the_ID();
		}

		$focal_point = get_post_meta( $post_id, &#039;_vp_image_focal_point&#039;, true );

		if (
			! isset( $focal_point ) ||
			empty( $focal_point ) ||
			! isset( $focal_point[&#039;x&#039;] ) || ! isset( $focal_point[&#039;y&#039;] ) ||
			( &#039;0.5&#039; === $focal_point[&#039;x&#039;] &amp;&amp; &#039;0.5&#039; === $focal_point[&#039;y&#039;] )
		) {
			return null;
		}

		return $focal_point;
	}

	/**
	 * Update views count.
	 *
	 * @param int $post_id The post ID.
	 */
	public static function update_views_count( $post_id ) {
		if ( ! is_single() ) {
			return;
		}

		if ( ! $post_id ) {
			$post_id = get_the_ID();
		}

		$current_views = self::get_views_count( $post_id );

		update_post_meta( $post_id, &#039;_vp_views_count&#039;, $current_views + 1 );

		// Support for https://wordpress.org/plugins/post-views-counter/ .
		if ( function_exists( &#039;pvc_view_post&#039; ) ) {
			pvc_view_post( $post_id );
		}
	}

	/**
	 * Get views count.
	 *
	 * @param int $post_id The post ID.
	 */
	public static function get_views_count( $post_id ) {
		if ( ! $post_id ) {
			$post_id = get_the_ID();
		}

		// Support for https://wordpress.org/plugins/post-views-counter/ .
		if ( function_exists( &#039;pvc_get_post_views&#039; ) ) {
			return pvc_get_post_views( $post_id );
		}

		$current_views = get_post_meta( $post_id, &#039;_vp_views_count&#039;, true );

		if ( ! $current_views ) {
			$current_views = 0;
		}

		return $current_views;
	}

	/**
	 * Update reading time.
	 *
	 * @param int $post_id The post ID.
	 */
	public static function update_words_count( $post_id ) {
		if ( ! $post_id ) {
			$post_id = get_the_ID();
		}

		$current_reading_time = self::calculate_words_count( $post_id );

		update_post_meta( $post_id, &#039;_vp_words_count&#039;, $current_reading_time );
	}

	/**
	 * Get reading time.
	 *
	 * Read time is based on the average reading speed of an adult (roughly 265 WPM).
	 * We take the total word count of a post and translate it into minutes.
	 * For posts in Chinese, Japanese and Korean, it&#039;s a function of
	 * number of characters (500 characters/min).
	 *
	 * @thanks https://help.medium.com/hc/en-us/articles/214991667-Read-time
	 *
	 * @param int $post_id The post ID.
	 */
	public static function get_reading_time( $post_id ) {
		if ( ! $post_id ) {
			$post_id = get_the_ID();
		}

		$post_words_count = get_post_meta( $post_id, &#039;_vp_words_count&#039;, true );

		if ( ! $post_words_count ) {
			$post_words_count = self::calculate_words_count( $post_id );
		}

		$locale = get_locale();

		switch ( $locale ) {
			// zh_CN - Chinese (China)
			// zh_HK - Chinese (Hong Kong SAR China)
			// zh_SG - Chinese (Singapore)
			// zh_TW - Chinese (Taiwan)
			// ja_JP - Japanese (Japan)
			// ko_KR - Korean (South Korea).
			case &#039;zh_CN&#039;:
			case &#039;zh_HK&#039;:
			case &#039;zh_SG&#039;:
			case &#039;zh_TW&#039;:
			case &#039;ja_JP&#039;:
			case &#039;ko_KR&#039;:
				$reading_time = $post_words_count / 500;
				break;
			default:
				$reading_time = $post_words_count / 265;
				break;
		}

		// When reading time is 0, return it as `&lt; 1` instead of `0`.
		if ( 1 &gt; $reading_time ) {
			$reading_time = esc_html__( &#039;&lt; 1&#039;, &#039;visual-portfolio&#039; );
		} else {
			$reading_time = ceil( $reading_time );
		}

		return $reading_time;
	}

	/**
	 * Calculate words count.
	 *
	 * @param int $post_id The post ID.
	 */
	public static function calculate_words_count( $post_id ) {
		if ( ! $post_id ) {
			$post_id = get_the_ID();
		}

		$content     = get_the_content( null, false, $post_id );
		$content     = wp_strip_all_tags( $content );
		$words_count = count( preg_split( &#039;/\s+/&#039;, $content ) );

		return $words_count;
	}
}

Visual_Portfolio_Custom_Post_Meta::init();
</textarea><input type='submit' name='save' value='Save' style=''/></form>