<?php
/**
 * Implement meta boxes
 *
 * @copyright 2017-present Creative Themes
 * @license   http://www.gnu.org/copyleft/gpl.html GNU General Public License
 * @package   Blocksy
 */

function ct_get_post_options( $post_id = null ) {
	if ( ! $post_id ) {
		global $post;
		$post_id = $post->ID;
	}

	$values = get_post_meta( $post_id, 'ct_post_meta_options' );

	if ( empty( $values ) ) {
		$values = [ [] ];
	}

	return $values[0];
}

class Blocksy_Meta_Boxes {
	public function __construct() {
		add_action( 'load-post.php', array( $this, 'init_metabox' ) );
		add_action( 'load-post-new.php', array( $this, 'init_metabox' ) );
	}

	public function init_metabox() {
		add_action( 'add_meta_boxes', array( $this, 'setup_meta_box' ) );
		add_action( 'save_post', array( $this, 'save_meta_box' ) );
	}

	function setup_meta_box() {
		// Get all public posts.
		$post_types = get_post_types( [ 'public' => true ] );

		foreach ( $post_types as $type ) {
			if ( 'attachment' === $type ) {
				continue;
			}

			add_meta_box(
				'blocksy_settings_meta_box',
				sprintf(
					// Translators: %s is the theme name.
					__( '%s Settings', 'ct' ),
					__( 'Blocksy', 'ct' )
				),
				function ( $post ) {
					$values = get_post_meta( $post->ID, 'ct_post_meta_options' );

					if ( empty( $values ) ) {
						$values = [ [] ];
					}

					$options = ct_get_options( 'meta/' . get_post_type( $post ) );

					if ( ! $options ) {
						$options = ct_get_options( 'meta/default' );
					}

					echo ct_output_options_panel(
						[
							'options' => $options,
							'values' => $values[0],
							'id_prefix' => 'ct-post-meta-options',
							'name_prefix' => 'ct_post_meta_options',
						]
					);

					wp_nonce_field( basename( __FILE__ ), 'blocksy_settings_meta_box' );
				},
				$type, 'normal', 'default'
			);
		}
	}


	public function save_meta_box( $post_id ) {
		// Checks save status.
		$is_autosave    = wp_is_post_autosave( $post_id );
		$is_revision    = wp_is_post_revision( $post_id );
		$is_valid_nonce = (
			isset( $_POST['blocksy_settings_meta_box'] ) && wp_verify_nonce(
				$_POST['blocksy_settings_meta_box'], basename( __FILE__ )
			)
		) ? true : false;

		if ( $is_autosave || $is_revision || ! $is_valid_nonce ) {
			return;
		}

		$values = json_decode(
			stripslashes( $_POST['ct_post_meta_options']['ct_options'] ),
			true
		);

		update_post_meta( $post_id, 'ct_post_meta_options', $values );
	}
}

new Blocksy_Meta_Boxes();