<?php

namespace AdPresso\Infrastructure;

use AdPresso\Constants;

defined( 'ABSPATH' ) || exit;

/**
 * Handles reading and writing of meta fields.
 */
class MetaHandler {
	private int $post_id;

	/**
	 * Constructor for MetaHandler.
	 *
	 * @param int $post_id
	 */
	public function __construct( int $post_id ) {
		$this->post_id = $post_id;
	}

	/**
	 * Get post meta field.
	 *
	 * @param string $key
	 * @param        $default
	 * @param bool   $single
	 *
	 * @return mixed|null
	 */
	public function get( string $key, $default = null, bool $single = true ): mixed {
		$value = get_post_meta( $this->post_id, Constants::META_PREFIX . $key, $single );
		return $value !== '' ? $value : $default;
	}

	/**
	 * Set post meta field. Key is prefixed with Constants::META_PREFIX to match get().
	 *
	 * @param string $key
	 * @param        $value
	 *
	 * @return void
	 */
	public function set( string $key, $value ): void {
		update_post_meta( $this->post_id, Constants::META_PREFIX . $key, $value );
	}

	/**
	 * Delete post meta field by key. Key is prefixed with Constants::META_PREFIX to match get().
	 *
	 * @param string $key Meta key.
	 *
	 * @return void
	 */
	public function delete( string $key ): void {
		delete_post_meta( $this->post_id, Constants::META_PREFIX . $key );
	}
}