registration.cs

using UnityEngine;
using UnityEngine.UI;
using TMPro;
using System.Text.RegularExpressions;

public class registration : MonoBehaviour
{
    [Header("Register")]
    public TMP_InputField nameField;
    public TMP_InputField passwordField;

    [SerializeField] private TMP_Text registerMessage;

    [SerializeField] private Button submitButton;

    private void Start()
    {
        registerMessage.text = "";
        nameField.onValueChanged.AddListener(delegate { VerifyInputs(); });
        passwordField.onValueChanged.AddListener(delegate { VerifyInputs(); });
    }

    public async void OnRegisterPressed()
    {
        // called by the register button
        VerifyInputs();
        try
        {
            (bool result, int errorCode, string message) = await SQLManager.RegisterUser(nameField.text, passwordField.text);

            if (result)
            {
                registerMessage.text = "Successfully registered!";
            }
            else
            {
                switch (errorCode)
                {
                    case 3:
                        // Username already exists
                        registerMessage.text = "Username already exists. Please choose another username.";
                        break;
                    case 22:
                        // Database insertion error
                        registerMessage.text = "Could not create account. Please try again later.";
                        break;
                    default:
                        // Generic error
                        registerMessage.text = $"Registration failed: {message}";
                        break;
                }
            }
        }
        catch
        {
            registerMessage.text = "An unexpected error occured, please try again";
        }
    }

    public void VerifyInputs()
    {
        submitButton.interactable = nameField.text.Length > 3 && VerifyPassword(passwordField.text);
    }

    private bool VerifyPassword(string password)
    {
        if (string.IsNullOrEmpty(password))
        {
            return false;
        }

        // Regex pattern to check password criteria
        string pattern = @"^(?=.*[A-Z])(?=.*[a-z])(?=.*\d)(?=.*[^A-Za-z\d]).{8,}$";
        return Regex.IsMatch(password, pattern);
    }
}