using System;
using System.Text.RegularExpressions;
using _Hub.Scripts.Network;
using TMPro;
using UnityEngine;
using UnityEngine.UI;

namespace _Hub.Scripts.UI
{
    public class LoginUI : MonoBehaviour
    {
        #region Variables

        private const int _maxUsernameLength = 15;
        private const int _maxPasswordLength = 15;
        [SerializeField] private Button loginButton;
        [SerializeField] private TMP_InputField usernameInputField;
        [SerializeField] private TMP_InputField passwordInputField;
        private string _username = String.Empty;
        private string _password = String.Empty;

        #endregion

        #region Unity

        private void Awake()
        {
            loginButton.onClick.AddListener(OnLoginClick);
            usernameInputField.onValueChanged.AddListener(UpdateUsername);
            passwordInputField.onValueChanged.AddListener(UpdatePassword);
        }

        private void OnLoginClick()
        {
        }

        private void UpdateUsername(string username)
        {
            _username = username;
            Debug.Log("Username:" + username);
            ValidateAndUpdateUI();
        }

        private void UpdatePassword(string password)
        {
            _password = password;
            Debug.Log("Password:" + password);
            ValidateAndUpdateUI();
        }

        private void ValidateAndUpdateUI()
        {
            var usernameRegex = Regex.Match(_username, "^[a-zA-Z0-9]+$");
            var interactable = (!string.IsNullOrWhiteSpace(_username) && !string.IsNullOrWhiteSpace(_password) &&
                                (_maxUsernameLength >= _username.Length && _maxPasswordLength >= _password.Length) &&
                                usernameRegex.Success);
            EnableLoginButton(interactable);
        }

        private void EnableLoginButton(bool interactable)
        {
            loginButton.interactable = interactable;
        }

        #endregion
    }
}