<?php
/**
 * Class: Helper responsible for PHP functionalities improvement.
 *
 * Helper class used for validating data.
 *
 * @package wsal
 */

declare(strict_types=1);

namespace WSAL\Helpers;

// Exit if accessed directly.
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

if ( ! class_exists( '\WSAL\Helpers\PHP_Helper' ) ) {
	/**
	 * Ease some of the PHP functionalities.
	 */
	class PHP_Helper {

		/**
		 * Use this method if you need to split string by comma, remove spaces (leading and trailing), remove empty elements from the array and.
		 *
		 * @param string $string - The string to split.
		 *
		 * @return array
		 *
		 * @since 4.4.2.1
		 */
		public static function string_to_array( string $string ): array {
			if ( empty( $string ) ) {
				return array();
			}

			$split_string = explode( ',', $string );

			// Remove the whitespaces.
			$split_string = array_map( 'trim', $split_string );

			// Removes empty elements.
			$split_string = array_filter( $split_string );

			if ( ! is_array( $split_string ) ) {
				return array();
			}

			return $split_string;
		}

		/**
		 * Filters request data.
		 *
		 * @return array Filtered request data.
		 *
		 * @since 4.5.0
		 */
		public static function get_filtered_request_data(): array {
			$result = array();

			$get_data = filter_input_array( INPUT_GET );
			if ( is_array( $get_data ) ) {
				$result = array_merge( $result, $get_data );
			}

			$post_data = filter_input_array( INPUT_POST );
			if ( is_array( $post_data ) ) {
				$result = array_merge( $result, $post_data );
			}

			return $result;
		}

		/**
		 * A wrapper for JSON encoding that fixes potential issues.
		 *
		 * @param mixed $data The data to encode.
		 * @return string JSON string.
		 */
		public static function json_encode( $data ) {
			return @json_encode( $data ); // phpcs:ignore
		}

		/**
		 * A wrapper for JSON encoding that fixes potential issues.
		 *
		 * @param string $data - The JSON string to decode.
		 * @return mixed Decoded data.
		 */
		public static function json_decode( $data ) {
			return @json_decode( $data ); // phpcs:ignore
		}
	}
}