chore: configure auth schemes and add refresh token revocation migration

src/FiscalOS.API/Http/HttpContextExtensions.cs

@@ -0,0 +1,34 @@
+using FiscalOS.Core.Identity;
+
+namespace FiscalOS.API.Http;
+
+internal static class HttpContextExtensions
+{
+  private const string RefreshTokenCookieName = "fiscalos_refresh_cookie";
+
+  public static Guid GetUserId(this HttpContext context)
+  {
+    var id = context.User.FindFirstValue(ClaimTypes.NameIdentifier) ?? string.Empty;
+    return Guid.TryParse(id, out var userId) ? userId : Guid.Empty;
+  }
+
+  public static void SetRefreshTokenCookie(this HttpContext context, RefreshToken token)
+  {
+    context.Response.Cookies.Append(
+      RefreshTokenCookieName,
+      token.Token,
+      new CookieOptions
+      {
+        HttpOnly = true,
+        Expires = token.ExpiresAt,
+        SameSite = SameSiteMode.Strict,
+        Secure = true
+      }
+    );
+  }
+
+  public static string GetRefreshTokenFromCookie(this HttpContext context)
+  {
+    return context.Request.Cookies[RefreshTokenCookieName] ?? string.Empty;
+  }
+}

src/FiscalOS.API/Refresh/Endpoint.cs

@@ -0,0 +1,60 @@
+namespace FiscalOS.API.Refresh;
+
+internal static class Endpoint
+{
+  private const string Route = "/refresh";
+
+  public static RouteHandlerBuilder MapRefreshEndpoint(this WebApplication app)
+  {
+    return app.MapPost(Route, HandleAsync);
+  }
+
+  private static async Task<IResult> HandleAsync(
+    HttpContext httpContext,
+    [FromServices] AppDbContext appDbContext,
+    [FromServices] TimeProvider timeProvider,
+    [FromServices] ITokenGenerator tokenGenerator
+  )
+  {
+    var requestUserId = httpContext.GetUserId();
+    var token = httpContext.GetRefreshTokenFromCookie();
+
+    var refreshToken = await appDbContext.RefreshTokens
+      .Include(t => t.User)
+      .SingleOrDefaultAsync(t => t.Token == token);
+
+    if (refreshToken is null || refreshToken.User is null)
+    {
+      return Results.BadRequest();
+    }
+
+    if (refreshToken.UserId != requestUserId)
+    {
+      await appDbContext.RefreshTokens
+        .Where(t => t.UserId == refreshToken.UserId)
+        .ExecuteUpdateAsync(t => t.SetProperty(t => t.Revoked, true));
+
+      await appDbContext.SaveChangesAsync();
+
+      return Results.Forbid();
+    }
+
+    var now = timeProvider.GetUtcNow();
+
+    if (refreshToken.Revoked || refreshToken.IsExpired(now))
+    {
+      return Results.BadRequest();
+    }
+
+    var accessToken = tokenGenerator.GenerateAccessToken(refreshToken.User);
+    var newRefreshToken = tokenGenerator.GenerateRefreshToken(refreshToken.User);
+
+    refreshToken.Revoke();
+    await appDbContext.RefreshTokens.AddAsync(newRefreshToken);
+    await appDbContext.SaveChangesAsync();
+
+    httpContext.SetRefreshTokenCookie(newRefreshToken);
+
+    return Results.Ok(Response.From(accessToken));
+  }
+}

src/FiscalOS.API/Refresh/Response.cs

@@ -0,0 +1,22 @@
+namespace FiscalOS.API.Refresh;
+
+internal sealed record Response
+{
+  public string AccessToken { get; init; }
+
+  [JsonConstructor]
+  private Response()
+  {
+    AccessToken = string.Empty;
+  }
+
+  private Response(string accessToken)
+  {
+    AccessToken = accessToken;
+  }
+
+  public static Response From(string accessToken)
+  {
+    return new(accessToken);
+  }
+}