<?php

namespace PrestoPlayer\Support;

class DynamicData
{
  /**
   * Get values to replace.
   *
   * @return array
   */
  public static function getValues()
  {
    $current_user = wp_get_current_user();

    return apply_filters('presto-player/dynamic-data', [
      '{user.user_login}' => $current_user->user_login ?? '',
      '{user.user_nicename}' => $current_user->user_nicename ?? '',
      '{user.user_email}' => $current_user->user_email ?? '',
      '{user.user_url}' => $current_user->user_url ?? '',
      '{user.user_registered}' => $current_user->user_registered ?? '',
      '{user.display_name}' => $current_user->display_name ?? '',
      '{site.url}' => get_home_url(),
      '{site.name}' => get_bloginfo(),
      '{ip_address}' => self::getIP()
    ]);
  }

  /**
   * Replace dynamic data with actual data.
   *
   * @param  array $items Array of items with ['text'].
   * @return array
   */
  public static function replaceItems($items, $key)
  {
    foreach ($items as $k => $item) {
      $items[$k][$key] = self::replaceText($item[$key]);
    }

    return $items;
  }

  /**
   * Replace value in string with dynamic data.
   *
   * @param string $text String with dynamic data.
   * @return string
   */
  public static function replaceText($text)
  {
    return wp_kses_post(strtr($text, self::getValues()));
  }

  /**
   * Get the person's IP.
   *
   * @return string
   */
  public static function getIP()
  {
    foreach (array('HTTP_CF_CONNECTING_IP', 'HTTP_CLIENT_IP', 'HTTP_X_FORWARDED_FOR', 'HTTP_X_FORWARDED', 'HTTP_X_CLUSTER_CLIENT_IP', 'HTTP_FORWARDED_FOR', 'HTTP_FORWARDED', 'REMOTE_ADDR') as $key) {
      if (array_key_exists($key, $_SERVER) === true) {
        foreach (explode(',', $_SERVER[$key]) as $ip) {
          $ip = trim($ip); // just to be safe

          if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE) !== false) {
            return $ip;
          }
        }
      }
    }
  }
}