using Microsoft.AspNetCore.Authentication;
using Microsoft.AspNetCore.Components;
using Microsoft.AspNetCore.Identity;

namespace BudgetApp.Components.Pages;

public partial class Login
{
    [SupplyParameterFromForm] private LoginModel Model { get; set; } = new();

    private string? _errorMessage;
    private List<AuthenticationScheme> _externalProviders = [];
    private string _antiforgeryToken = string.Empty;

    [CascadingParameter] private HttpContext? HttpContext { get; set; }

    protected override async Task OnInitializedAsync()
    {
        var schemes = await SchemeProvider.GetAllSchemesAsync();
        _externalProviders = schemes
            .Where(s => !string.IsNullOrEmpty(s.DisplayName)
                        && s.Name != IdentityConstants.ApplicationScheme
                        && s.Name != IdentityConstants.ExternalScheme
                        && s.Name != IdentityConstants.TwoFactorUserIdScheme
                        && s.Name != IdentityConstants.TwoFactorRememberMeScheme)
            .ToList();

        if (HttpContext is not null)
        {
            var tokens = HttpContext.RequestServices
                .GetRequiredService<Microsoft.AspNetCore.Antiforgery.IAntiforgery>()
                .GetAndStoreTokens(HttpContext);
            _antiforgeryToken = tokens.RequestToken ?? string.Empty;
        }
    }

    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 static MarkupString GetProviderIcon(string provider) => provider switch
    {
        "Google" => new MarkupString(
            "<svg xmlns=\"http://www.w3.org/2000/svg\" width=\"18\" height=\"18\" viewBox=\"0 0 24 24\"><path fill=\"#4285F4\" d=\"M22.56 12.25c0-.78-.07-1.53-.2-2.25H12v4.26h5.92a5.06 5.06 0 0 1-2.2 3.32v2.77h3.57c2.08-1.92 3.27-4.74 3.27-8.1z\"/><path fill=\"#34A853\" d=\"M12 23c2.97 0 5.46-.98 7.28-2.66l-3.57-2.77c-.98.66-2.23 1.06-3.71 1.06-2.86 0-5.29-1.93-6.16-4.53H2.18v2.84C3.99 20.53 7.7 23 12 23z\"/><path fill=\"#FBBC05\" d=\"M5.84 14.09c-.22-.66-.35-1.36-.35-2.09s.13-1.43.35-2.09V7.07H2.18C1.43 8.55 1 10.22 1 12s.43 3.45 1.18 4.93l2.85-2.22.81-.62z\"/><path fill=\"#EA4335\" d=\"M12 5.38c1.62 0 3.06.56 4.21 1.64l3.15-3.15C17.45 2.09 14.97 1 12 1 7.7 1 3.99 3.47 2.18 7.07l3.66 2.84c.87-2.6 3.3-4.53 6.16-4.53z\"/></svg>"),
        "Microsoft" => new MarkupString(
            "<svg xmlns=\"http://www.w3.org/2000/svg\" width=\"18\" height=\"18\" viewBox=\"0 0 23 23\"><rect fill=\"#f25022\" x=\"1\" y=\"1\" width=\"10\" height=\"10\"/><rect fill=\"#00a4ef\" x=\"1\" y=\"12\" width=\"10\" height=\"10\"/><rect fill=\"#7fba00\" x=\"12\" y=\"1\" width=\"10\" height=\"10\"/><rect fill=\"#ffb900\" x=\"12\" y=\"12\" width=\"10\" height=\"10\"/></svg>"),
        "Facebook" => new MarkupString(
            "<svg xmlns=\"http://www.w3.org/2000/svg\" width=\"18\" height=\"18\" viewBox=\"0 0 24 24\"><path fill=\"#1877F2\" d=\"M24 12.073C24 5.405 18.627 0 12 0S0 5.405 0 12.073C0 18.1 4.388 23.094 10.125 24v-8.437H7.078v-3.49h3.047V9.413c0-3.007 1.792-4.669 4.533-4.669 1.312 0 2.686.235 2.686.235v2.953H15.83c-1.491 0-1.956.925-1.956 1.874v2.25h3.328l-.532 3.49h-2.796V24C19.612 23.094 24 18.1 24 12.073z\"/></svg>"),
        _ => new MarkupString("")
    };

    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;
    }
}