using System.Collections;
using System.Collections.Generic;
using TMPro;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.SceneManagement;
using System.Text.RegularExpressions;
using System.Net.Sockets;



public class NetworkJoinFunction : MonoBehaviour
    
{
    [SerializeField] private Button enterButton;
    [SerializeField] private TMP_Text inputText;

    [SerializeField] private TMP_Text infoText;
    // Start is called before the first frame update
    public void Start()
    {
        enterButton.onClick.AddListener(() =>
        {
            //check if there ip entered is valid
            //for any reason the keyboard of blackwhale studios creates zero width whitespaces, this must be cleared!
            //https://en.wikipedia.org/wiki/Zero-width_space
            if (IsValidIPv4(inputText.text.Replace("\u200B", "")))
            {
                setNetworkData(inputText.text);
                SceneManager.LoadScene("ClassRoom");                
            }
            else
            {
                infoText.text = "Die Eingabe scheint keine valide IPv4-Adresse zu sein.\n Bitte �berpr�fe deine Eingabe und achte drauf, die Zieladresse wie folgt anzugeben \n 127.0.0.1";
            }
        });
    }
    public bool IsValidIPv4(string ipAddress)
    {
        //the pattern that a valid ipv4 must match
        string pattern = @"^(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$";
        Regex regex = new Regex(pattern);

        return regex.IsMatch(ipAddress);
    }

    //just make the current client a client (no server/host etc.)
    public void setNetworkData(string hostadress)
    {
        PlayerPrefs.SetString("hostadress", hostadress.Replace("\u200B", ""));
        PlayerPrefs.SetString("status", "client");
        PlayerPrefs.Save();
    }

    
}