@page "/login"

@attribute [AllowAnonymous]

@using Microsoft.AspNetCore.Authorization
@using OrdersManagement.Models
@using Syncfusion.Blazor.Inputs
@using Syncfusion.Blazor.Buttons
@using Syncfusion.Blazor.Cards
@inject UserService UserService
@inject NavigationManager NavigationManager

<div class="h-100 d-flex justify-content-center align-items-start">
    <SfCard CssClass="text-center shadow" style="max-width: 500px;">
        <CardHeader>
            <h3 class="text-primary">Logowanie</h3>
        </CardHeader>
        <CardContent>
            @if (!string.IsNullOrEmpty(TempPassword))
            {
                <div class="alert alert-info mb-3">
                    Twoje tymczasowe hasło to: <strong>@TempPassword</strong>. Użyj go do pierwszego logowania.
                </div>
            }

            <EditForm Model="@LoginModel" FormName="LoginForm" OnValidSubmit="@HandleLogin">
                <DataAnnotationsValidator/>
                <ValidationSummary class="text-danger mb-3"/>

                <div class="form-group mb-3">
                    <label for="login" class="d-block text-start">Login</label>
                    <SfTextBox ID="login" @bind-Value="LoginModel.Login" Placeholder="Wprowadź login" CssClass="e-outline"/>
                    <ValidationMessage For="@(() => LoginModel.Login)" ClassName="text-danger"/>
                </div>

                <div class="form-group mb-3">
                    <label for="password" class="d-block text-start">Hasło</label>
                    <SfTextBox ID="password" Type="InputType.Password" @bind-Value="LoginModel.Password"
                               Placeholder="Wprowadź hasło" CssClass="e-outline"/>
                    <ValidationMessage For="@(() => LoginModel.Password)" ClassName="text-danger"/>
                </div>

                <div class="form-group mt-3">
                    <SfButton CssClass="e-primary" IsPrimary="true" Type="submit">Zaloguj</SfButton>
                </div>

                @if (!string.IsNullOrEmpty(ErrorMessage))
                {
                    <div class="alert alert-danger mt-3">@ErrorMessage</div>
                }
            </EditForm>

            @if (ShowChangePassword)
            {
                <hr class="my-4"/>
                <h5 class="text-success mb-3">Zmień hasło</h5>
                <EditForm Model="@ChangePasswordModel" FormName="ChangePasswordForm" OnValidSubmit="@HandleChangePassword">
                    <DataAnnotationsValidator/>
                    <ValidationSummary class="text-danger mb-3"/>

                    <div class="form-group mb-3">
                        <label for="newPassword" class="d-block text-start">Nowe hasło</label>
                        <SfTextBox ID="newPassword" Type="InputType.Password" @bind-Value="ChangePasswordModel.NewPassword"
                                   Placeholder="Wprowadź nowe hasło" CssClass="e-outline"/>
                        <ValidationMessage For="@(() => ChangePasswordModel.NewPassword)" ClassName="text-danger"/>
                    </div>

                    <div class="form-group mb-3">
                        <label for="confirmPassword" class="d-block text-start">Potwierdź hasło</label>
                        <SfTextBox ID="confirmPassword" Type="InputType.Password" @bind-Value="ChangePasswordModel.ConfirmPassword"
                                   Placeholder="Potwierdź nowe hasło" CssClass="e-outline"/>
                        <ValidationMessage For="@(() => ChangePasswordModel.ConfirmPassword)" ClassName="text-danger"/>
                    </div>

                    <div class="form-group mt-3">
                        <SfButton CssClass="e-success" IsPrimary="true" Type="submit">Zmień hasło</SfButton>
                    </div>
                </EditForm>
            }
        </CardContent>
        <CardFooter>
            <small class="text-muted">Orders Management System © @(DateTime.Now.Year)</small>
        </CardFooter>
    </SfCard>
</div>

@code {
    private LoginModel LoginModel { get; set; } = new();
    private ChangePasswordModel ChangePasswordModel { get; set; } = new();
    private bool ShowChangePassword { get; set; }
    private string TempPassword { get; set; }
    private string ErrorMessage { get; set; }

    protected override void OnInitialized()
    {
        TempPassword = NavigationManager.Uri.Split('?').Length > 1 ? Uri.UnescapeDataString(NavigationManager.Uri.Split('=')[1]) : null;
    }

    private async Task HandleLogin()
    {
        try
        {
            Console.WriteLine($"Próba logowania dla: {LoginModel.Login}");
            var user = await UserService.AuthenticateUserAsync(LoginModel.Login, LoginModel.Password);
            
            if (user != null)
            {
                Console.WriteLine($"Użytkownik {user.Login} znaleziony.");
                if (user.IsTemporaryPassword)
                {
                    ShowChangePassword = true;
                    StateHasChanged();
                }
                else
                {
                    NavigationManager.NavigateTo("/ScheduleOrders");
                }
            }
            else
            {
                ErrorMessage = "Nieprawidłowy login lub hasło";
                Console.WriteLine(ErrorMessage);
                StateHasChanged();
            }
        }
        catch (Exception ex)
        {
            ErrorMessage = $"Błąd logowania: {ex.Message}";
            Console.WriteLine(ErrorMessage);
            StateHasChanged();
        }
    }

    private async Task HandleChangePassword()
    {
        try
        {
            if (ChangePasswordModel.NewPassword == ChangePasswordModel.ConfirmPassword)
            {
                var user = await UserService.GetUserByUsernameAsync(LoginModel.Login);
                if (user != null)
                {
                    user.PasswordHash = BCrypt.Net.BCrypt.HashPassword(ChangePasswordModel.NewPassword);
                    user.IsTemporaryPassword = false;
                    await UserService.UpdateUserAsync(user);
                    ShowChangePassword = false;
                    LoginModel = new LoginModel();
                    StateHasChanged();
                    NavigationManager.NavigateTo("/login");
                }
            }
            else
            {
                ErrorMessage = "Hasła nie są zgodne";
                StateHasChanged();
            }
        }
        catch (Exception ex)
        {
            ErrorMessage = $"Błąd zmiany hasła: {ex.Message}";
            StateHasChanged();
        }
    }

}