@page "/login"
@layout AuthLayout
@using Microsoft.AspNetCore.Identity
@inject SignInManager<ApplicationUser> SignInManager
@inject NavigationManager Navigation

<PageTitle>Budgeteer — Sign In</PageTitle>

<h3 class="text-center mb-4">Sign In</h3>

<EditForm Model="Model" OnValidSubmit="HandleLogin" FormName="login">
    <DataAnnotationsValidator />

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

    <div class="mb-3">
        <label class="form-label">Email</label>
        <InputText @bind-Value="Model.Email" class="form-control" placeholder="you@example.com" />
        <ValidationMessage For="() => Model.Email" />
    </div>

    <div class="mb-3">
        <label class="form-label">Password</label>
        <InputText @bind-Value="Model.Password" type="password" class="form-control" />
        <ValidationMessage For="() => Model.Password" />
    </div>

    <button type="submit" class="btn btn-primary w-100">Sign In</button>
</EditForm>

<p class="text-center mt-3">
    Don't have an account? <a href="/register">Register</a>
</p>

@code {
    [SupplyParameterFromForm]
    private LoginModel Model { get; set; } = new();

    private string? errorMessage;

    private async Task HandleLogin()
    {
        errorMessage = null;

        var result = await SignInManager.PasswordSignInAsync(
            Model.Email, Model.Password, isPersistent: false, lockoutOnFailure: false);

        if (result.Succeeded)
        {
            Navigation.NavigateTo("/", forceLoad: true);
        }
        else
        {
            errorMessage = "Invalid email or password.";
        }
    }

    private sealed class LoginModel
    {
        [System.ComponentModel.DataAnnotations.Required(ErrorMessage = "Email is required")]
        [System.ComponentModel.DataAnnotations.EmailAddress]
        public string Email { get; set; } = string.Empty;

        [System.ComponentModel.DataAnnotations.Required(ErrorMessage = "Password is required")]
        public string Password { get; set; } = string.Empty;
    }
}