<?php

/**
 * Sanitization API: Sanitization Class
 *
 * @todo https://github.com/zendframework/zend-escaper/blob/master/src/Escaper.php
 *
 * @package ItalyStrap
 * @since 2.0.0
 */

namespace ItalyStrap\Update;

if (! defined('ITALYSTRAP_PLUGIN') or ! ITALYSTRAP_PLUGIN) {
    die();
}

/**
 * Sanitization class
 */
class Sanitization
{
    /**
     * Filter the value of key
     *
     * @access private
     * @param  string $rules          Insert the filter name you want to use.
     *                                Use | to separate more filter.
     *
     * @param  string $instance_value The value you want to filter.
     * @return string                 Return the value filtered
     */
    public function sanitize($rules, $instance_value)
    {
        $rules = explode('|', $rules);

        if (empty($rules) || count($rules) < 1) {
            return $instance_value;
        }

        foreach ($rules as $rule) {
            $instance_value = $this->do_filter($rule, $instance_value);
        }

        return $instance_value;
    }

    /**
     * Filter the value of key
     *
     * List of functions for sanitizing data:
     * strip_tags
     * wp_strip_all_tags
     * esc_attr
     * esc_url
     * esc_textarea
     * sanitize_email
     * sanitize_file_name
     * sanitize_html_class
     * sanitize_key
     * sanitize_meta
     * sanitize_mime_type
     * sanitize_sql_orderby
     * sanitize_text_field
     * sanitize_title
     * sanitize_title_for_query
     * sanitize_title_with_dashes
     * sanitize_user
     * sanitize_option // sanitize_option ha bisogno di 2 valori eseguire test
     *
     * @access private
     * @param  string $rule         The filter name you want to use.
     * @param  string $instance_value The value you want to filter.
     * @return string                 Return the value filtered
     */
    private function do_filter($rule, $instance_value = '')
    {

        if (method_exists($this, $rule)) {
            return $this->$rule($instance_value);
        } elseif (function_exists($rule)) {
            return call_user_func($rule, $instance_value);
        } else {
            return sanitize_text_field($instance_value);
        }
    }

    /**
     * Sanitize taxonomy_multiple_select and return an array with taxonomies ID
     *
     * @param  array|string $instance_value The value to sanitize
     * @return array                        The sanitized array
     */
    public function sanitize_taxonomy_multiple_select($instance_value)
    {

        if (! $instance_value) {
            return $instance_value;
        }

        $array = array_map('esc_attr', (array) $instance_value);
        $array = array_map('absint', $array);
        $count = count($array);
        if (1 === $count && 0 === $array[0]) {
            return [];
        }
        return $array;
    }

    /**
     * Sanitize taxonomy_multiple_select and return an array with taxonomies ID
     *
     * @param  array|string $instance_value The value to sanitize
     * @return array                        The sanitized array
     */
    public function sanitize_select_multiple($instance_value)
    {

        if (! $instance_value) {
            return $instance_value;
        }

        $array = array_map('esc_attr', (array) $instance_value);
        $count = count($array);
        if (1 === $count && 0 === $array[0]) {
            return [];
        }
        return $array;
    }
}