From 9cb68c31e1c25ce9c300c9d2369c998ac2c590ec Mon Sep 17 00:00:00 2001
From: Billy Laws <blaws05@gmail.com>
Date: Thu, 2 Jun 2022 00:03:26 +0100
Subject: [PATCH] Stub nfp IUser::AttachAvailabilityChangeEvent

---
 app/src/main/cpp/skyline/services/nfp/IUser.cpp | 17 +++++++++++++----
 app/src/main/cpp/skyline/services/nfp/IUser.h   | 13 +++++++++++--
 2 files changed, 24 insertions(+), 6 deletions(-)

diff --git a/app/src/main/cpp/skyline/services/nfp/IUser.cpp b/app/src/main/cpp/skyline/services/nfp/IUser.cpp
index d33d435b..0e24b2b3 100644
--- a/app/src/main/cpp/skyline/services/nfp/IUser.cpp
+++ b/app/src/main/cpp/skyline/services/nfp/IUser.cpp
@@ -1,14 +1,15 @@
 // SPDX-License-Identifier: MPL-2.0
 // Copyright © 2020 Skyline Team and Contributors (https://github.com/skyline-emu/)
 
-#include "IUser.h"
+#include <kernel/types/KProcess.h>
 #include "IUserManager.h"
+#include "IUser.h"
 
 namespace skyline::service::nfp {
-    IUser::IUser(const DeviceState &state, ServiceManager &manager) : BaseService(state, manager) {}
+    IUser::IUser(const DeviceState &state, ServiceManager &manager) : BaseService(state, manager), attachAvailabilityChangeEvent(std::make_shared<type::KEvent>(state, false)) {}
 
     Result IUser::Initialize(type::KSession &session, ipc::IpcRequest &request, ipc::IpcResponse &response) {
-        state = State::Initialized;
+        nfpState = State::Initialized;
         return {};
     }
 
@@ -18,7 +19,15 @@ namespace skyline::service::nfp {
     }
 
     Result IUser::GetState(type::KSession &session, ipc::IpcRequest &request, ipc::IpcResponse &response) {
-        response.Push(state);
+        response.Push(nfpState);
+        return {};
+    }
+
+    Result IUser::AttachAvailabilityChangeEvent(type::KSession &session, ipc::IpcRequest &request, ipc::IpcResponse &response) {
+        auto handle{state.process->InsertItem(attachAvailabilityChangeEvent)};
+        Logger::Debug("Attach Availability Change Event Handle: 0x{:X}", handle);
+        response.copyHandles.push_back(handle);
+
         return {};
     }
 }
diff --git a/app/src/main/cpp/skyline/services/nfp/IUser.h b/app/src/main/cpp/skyline/services/nfp/IUser.h
index d67a277c..ac99e0f3 100644
--- a/app/src/main/cpp/skyline/services/nfp/IUser.h
+++ b/app/src/main/cpp/skyline/services/nfp/IUser.h
@@ -3,6 +3,7 @@
 
 #pragma once
 
+#include <kernel/types/KEvent.h>
 #include <services/base_service.h>
 
 namespace skyline::service::nfp {
@@ -12,10 +13,12 @@ namespace skyline::service::nfp {
      */
     class IUser : public BaseService {
       private:
+        std::shared_ptr<type::KEvent> attachAvailabilityChangeEvent; //!< Signalled on NFC device availability changes
+
         enum class State : u32 {
             NotInitialized = 0,
             Initialized = 1
-        } state{State::NotInitialized};
+        } nfpState{State::NotInitialized};
 
       public:
         IUser(const DeviceState &state, ServiceManager &manager);
@@ -32,10 +35,16 @@ namespace skyline::service::nfp {
          */
         Result GetState(type::KSession &session, ipc::IpcRequest &request, ipc::IpcResponse &response);
 
+        /*
+         * @url https://switchbrew.org/wiki/NFC_services#AttachAvailabilityChangeEvent
+         */
+        Result AttachAvailabilityChangeEvent(type::KSession &session, ipc::IpcRequest &request, ipc::IpcResponse &response);
+
         SERVICE_DECL(
             SFUNC(0x0, IUser, Initialize),
             SFUNC(0x2, IUser, ListDevices),
-            SFUNC(0x13, IUser, GetState)
+            SFUNC(0x13, IUser, GetState),
+            SFUNC(0x17, IUser, AttachAvailabilityChangeEvent)
         )
     };
 }