using System.Windows;
using Microsoft.EntityFrameworkCore;
using SimpleWiki.Data;
using SimpleWiki.Models;
using SimpleWiki.Services;

namespace SimpleWiki.Views;

public partial class RegisterWindow : Window
{
    public RegisterWindow()
    {
        InitializeComponent();
    }

    private void RegisterButton_Click(object sender, RoutedEventArgs e)
    {
        var fullNameError = InputValidator.ValidateFullName(FullNameTextBox.Text);
        var emailError = InputValidator.ValidateEmail(EmailTextBox.Text);
        var passwordError = InputValidator.ValidatePassword(PasswordBox.Password);
        var errors = InputValidator.JoinErrors(fullNameError, emailError, passwordError);

        if (!string.IsNullOrWhiteSpace(errors))
        {
            MessageBox.Show(errors, "Ошибка валидации", MessageBoxButton.OK, MessageBoxImage.Warning);
            return;
        }

        using var db = new AppDbContext();
        var email = EmailTextBox.Text.Trim().ToLowerInvariant();
        var exists = db.Users.AsNoTracking().Any(x => x.Email.ToLower() == email);

        if (exists)
        {
            MessageBox.Show("Пользователь с таким email уже существует.", "Ошибка", MessageBoxButton.OK, MessageBoxImage.Error);
            return;
        }

        var user = new User
        {
            FullName = FullNameTextBox.Text.Trim(),
            Email = email,
            PasswordHash = PasswordHasher.HashPassword(PasswordBox.Password),
            Role = IsAdminCheckBox.IsChecked == true ? Roles.Admin : Roles.User,
            CreatedAt = DateTime.UtcNow
        };

        db.Users.Add(user);
        db.SaveChanges();

        MessageBox.Show("Аккаунт создан. Теперь можно войти.", "Успех", MessageBoxButton.OK, MessageBoxImage.Information);
        new LoginWindow().Show();
        Close();
    }

    private void BackButton_Click(object sender, RoutedEventArgs e)
    {
        new LoginWindow().Show();
        Close();
    }
}