@page "/login"
@using System.ComponentModel.DataAnnotations
@inject UserService Gebruikers

<PageTitle>Inloggen — ProostenKrant</PageTitle>

<section class="card auth-card">
    <h1 class="headline">Inloggen redactie</h1>
    <p class="muted">Kies je naam en voer het familiewachtwoord in.</p>

    @if (_fout is not null)
    {
        <p class="alert alert-error">@_fout</p>
    }

    <EditForm FormName="login" Method="post" Model="Input" OnValidSubmit="LoginUser" class="krant-form">
        <div class="form-group">
            <label for="username">Familielid</label>
            <InputSelect @bind-Value="Input.Username" id="username" class="form-control">
                <option value="">— Kies je naam —</option>
                @foreach (var gebruiker in _gebruikers)
                {
                    <option value="@gebruiker.Username">@gebruiker.DisplayName</option>
                }
            </InputSelect>
            <ValidationMessage For="() => Input.Username" />
        </div>
        <div class="form-group">
            <label for="password">Wachtwoord</label>
            <InputText type="password" @bind-Value="Input.Password" id="password" class="form-control" autocomplete="current-password" />
            <ValidationMessage For="() => Input.Password" />
        </div>
        <div class="form-actions">
            <button type="submit" class="btn btn-primary">Inloggen</button>
        </div>
    </EditForm>
</section>

@code {
    [CascadingParameter]
    private HttpContext HttpContext { get; set; } = default!;

    [SupplyParameterFromForm(FormName = "login")]
    private LoginInput Input { get; set; } = new();

    private List<User> _gebruikers = new();
    private string? _fout;

    protected override async Task OnInitializedAsync()
    {
        Input ??= new();
        _gebruikers = await Gebruikers.GetAllAsync();
    }

    private async Task LoginUser()
    {
        var gebruiker = _gebruikers.FirstOrDefault(g =>
            string.Equals(g.Username, Input.Username, StringComparison.OrdinalIgnoreCase));
        if (gebruiker is null || Input.Password != Krant.UniversalPassword)
        {
            _fout = "Ongeldige gebruikersnaam of wachtwoord.";
            return;
        }

        var principal = KrantAuth.EditorPrincipal(gebruiker);
        await HttpContext.SignInAsync(KrantAuth.Scheme, principal);
        Nav.NavigateTo("/dashboard", forceLoad: true);
    }

    private sealed class LoginInput
    {
        [Required(ErrorMessage = "Kies je naam.")]
        public string Username { get; set; } = "";

        [Required(ErrorMessage = "Voer het wachtwoord in.")]
        public string Password { get; set; } = "";
    }
}