@page "/account/login"
@using TrueCV.Web.Components.Layout
@layout MainLayout
@rendermode InteractiveServer

@using Microsoft.AspNetCore.Identity
@using TrueCV.Infrastructure.Identity

@inject SignInManager<ApplicationUser> SignInManager
@inject NavigationManager NavigationManager

<PageTitle>Login - TrueCV</PageTitle>

<div class="container py-5">
    <div class="row justify-content-center">
        <div class="col-md-5">
            <div class="card border-0 shadow">
                <div class="card-body p-5">
                    <div class="text-center mb-4">
                        <svg xmlns="http://www.w3.org/2000/svg" width="48" height="48" fill="currentColor" class="bi bi-patch-check-fill text-primary mb-3" viewBox="0 0 16 16">
                            <path d="M10.067.87a2.89 2.89 0 0 0-4.134 0l-.622.638-.89-.011a2.89 2.89 0 0 0-2.924 2.924l.01.89-.636.622a2.89 2.89 0 0 0 0 4.134l.637.622-.011.89a2.89 2.89 0 0 0 2.924 2.924l.89-.01.622.636a2.89 2.89 0 0 0 4.134 0l.622-.637.89.011a2.89 2.89 0 0 0 2.924-2.924l-.01-.89.636-.622a2.89 2.89 0 0 0 0-4.134l-.637-.622.011-.89a2.89 2.89 0 0 0-2.924-2.924l-.89.01-.622-.636zm.287 5.984-3 3a.5.5 0 0 1-.708 0l-1.5-1.5a.5.5 0 1 1 .708-.708L7 8.793l2.646-2.647a.5.5 0 0 1 .708.708z"/>
                        </svg>
                        <h3 class="fw-bold">Welcome Back</h3>
                        <p class="text-muted">Sign in to your TrueCV account</p>
                    </div>

                    @if (!string.IsNullOrEmpty(_errorMessage))
                    {
                        <div class="alert alert-danger alert-dismissible fade show" role="alert">
                            @_errorMessage
                            <button type="button" class="btn-close" @onclick="() => _errorMessage = null" aria-label="Close"></button>
                        </div>
                    }

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

                        <div class="mb-3">
                            <label for="email" class="form-label">Email address</label>
                            <InputText id="email" class="form-control form-control-lg" @bind-Value="_model.Email"
                                       placeholder="name@example.com" />
                            <ValidationMessage For="() => _model.Email" class="text-danger" />
                        </div>

                        <div class="mb-3">
                            <label for="password" class="form-label">Password</label>
                            <InputText id="password" type="password" class="form-control form-control-lg"
                                       @bind-Value="_model.Password" placeholder="Enter your password" />
                            <ValidationMessage For="() => _model.Password" class="text-danger" />
                        </div>

                        <div class="mb-3 form-check">
                            <InputCheckbox id="rememberMe" class="form-check-input" @bind-Value="_model.RememberMe" />
                            <label class="form-check-label" for="rememberMe">
                                Remember me
                            </label>
                        </div>

                        <div class="d-grid">
                            <button type="submit" class="btn btn-primary btn-lg" disabled="@_isLoading">
                                @if (_isLoading)
                                {
                                    <span class="spinner-border spinner-border-sm me-2" role="status" aria-hidden="true"></span>
                                    <span>Signing in...</span>
                                }
                                else
                                {
                                    <span>Sign In</span>
                                }
                            </button>
                        </div>
                    </EditForm>

                    <hr class="my-4" />

                    <div class="text-center">
                        <p class="mb-0">
                            Don't have an account?
                            <a href="/account/register" class="text-decoration-none fw-medium">Create one</a>
                        </p>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>

@code {
    private LoginModel _model = new();
    private bool _isLoading;
    private string? _errorMessage;

    [SupplyParameterFromQuery]
    public string? ReturnUrl { get; set; }

    private async Task HandleLogin()
    {
        _isLoading = true;
        _errorMessage = null;

        try
        {
            var result = await SignInManager.PasswordSignInAsync(
                _model.Email,
                _model.Password,
                _model.RememberMe,
                lockoutOnFailure: false);

            if (result.Succeeded)
            {
                var returnUrl = string.IsNullOrEmpty(ReturnUrl) ? "/dashboard" : ReturnUrl;
                NavigationManager.NavigateTo(returnUrl, forceLoad: true);
            }
            else if (result.IsLockedOut)
            {
                _errorMessage = "This account has been locked out. Please try again later.";
            }
            else if (result.IsNotAllowed)
            {
                _errorMessage = "This account is not allowed to sign in.";
            }
            else
            {
                _errorMessage = "Invalid email or password.";
            }
        }
        catch (Exception ex)
        {
            _errorMessage = $"An error occurred: {ex.Message}";
        }
        finally
        {
            _isLoading = false;
        }
    }

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

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

        public bool RememberMe { get; set; }
    }
}