Services/UserService.cs


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using Microsoft.AspNetCore.Authentication;
using Microsoft.AspNetCore.Authentication.Cookies;
using System.Runtime.InteropServices;
using System.Security.Claims;
using System.Security.Principal;

namespace HyperBooru.Services;

public interface IUserService {
    public bool ShowNsfw { get; set; }

    public event EventHandler<bool> ShowNsfwChanged;

    public bool Login(string username, string password);
    public void Logout();
}

public class UserService : IUserService {
    public bool ShowNsfw {
        get => showNsfw;
        set {
            showNsfw = value;
            ShowNsfwChanged?.Invoke(this, value);
        }
    }

    public event EventHandler<bool> ShowNsfwChanged;

    private bool showNsfw = false;

    private IGlobalUserService   globalUserService;
    private IHttpContextAccessor httpContextAccessor;

    public UserService(
        IGlobalUserService globalUserService,
        IHttpContextAccessor httpContextAccessor) {

        this.globalUserService   = globalUserService;
        this.httpContextAccessor = httpContextAccessor;
    }

    public bool Login(string username, string password) {
        var claims = new Claim[] {
        };

        var claimsIdentity = new ClaimsIdentity(
            claims,
            CookieAuthenticationDefaults.AuthenticationScheme);

        var claimsPrincipal = new ClaimsPrincipal(claimsIdentity);

        if(httpContextAccessor.HttpContext is null)
            return false;

        httpContextAccessor.HttpContext.SignInAsync(claimsPrincipal)
            .GetAwaiter()
            .GetResult();

        return true;
    }

    public void Logout() {
        httpContextAccessor.HttpContext?.SignOutAsync()
            .GetAwaiter()
            .GetResult();
    }
}