FrontOffice/src/FrontOffice.Main/Utilities/AuthService.cs

using Blazored.LocalStorage;
using Microsoft.AspNetCore.Components;
using MudBlazor;

namespace FrontOffice.Main.Utilities;

public class AuthService
{
    private readonly ILocalStorageService _localStorage;
    private readonly NavigationManager _navigation;
    private readonly ISnackbar _snackbar;

    private const string TokenStorageKey = "auth:token";

    public AuthService(ILocalStorageService localStorage, NavigationManager navigation, ISnackbar snackbar)
    {
        _localStorage = localStorage;
        _navigation = navigation;
        _snackbar = snackbar;
    }

    public async Task<bool> IsAuthenticatedAsync()
    {
        var token = await _localStorage.GetItemAsync<string>(TokenStorageKey);
        return !string.IsNullOrWhiteSpace(token);
    }

    public async Task<string?> GetTokenAsync()
    {
        return await _localStorage.GetItemAsync<string>(TokenStorageKey);
    }

    public async Task LogoutAsync()
    {
        await _localStorage.RemoveItemAsync(TokenStorageKey);
        await _localStorage.RemoveItemAsync("auth:phone-number");
        await _localStorage.RemoveItemAsync("auth:redirect");
        await _localStorage.RemoveItemAsync("referral:code");

        _snackbar.Add("با موفقیت از حساب کاربری خارج شدید.", Severity.Success);
        _navigation.NavigateTo(RouteConstants.Main.MainPage);
    }

    public async Task RequireAuthenticationAsync()
    {
        var isAuthenticated = await IsAuthenticatedAsync();
        if (!isAuthenticated)
        {
            _snackbar.Add("لطفاً ابتدا وارد حساب کاربری شوید.", Severity.Warning);
            _navigation.NavigateTo(RouteConstants.Main.MainPage);
        }
    }
}