15 files changed, 322 insertions, 20 deletions

diff --git a/src/core/CMakeLists.txt b/src/core/CMakeLists.txt
index 32cc2f392..c1cc62a45 100644
--- a/src/core/CMakeLists.txt
+++ b/src/core/CMakeLists.txt
@@ -1,4 +1,6 @@
 add_library(core STATIC
+    announce_multiplayer_session.cpp
+    announce_multiplayer_session.h
     arm/arm_interface.h
     arm/arm_interface.cpp
     arm/cpu_interrupt_handler.cpp
@@ -714,6 +716,11 @@ add_library(core STATIC
     hle/service/vi/vi_u.h
     hle/service/wlan/wlan.cpp
     hle/service/wlan/wlan.h
+    internal_network/network.cpp
+    internal_network/network.h
+    internal_network/network_interface.cpp
+    internal_network/network_interface.h
+    internal_network/sockets.h
     loader/deconstructed_rom_directory.cpp
     loader/deconstructed_rom_directory.h
     loader/elf.cpp
@@ -741,11 +748,6 @@ add_library(core STATIC
     memory/dmnt_cheat_vm.h
     memory.cpp
     memory.h
-    network/network.cpp
-    network/network.h
-    network/network_interface.cpp
-    network/network_interface.h
-    network/sockets.h
     perf_stats.cpp
     perf_stats.h
     reporter.cpp
@@ -780,7 +782,7 @@ endif()
 
 create_target_directory_groups(core)
 
-target_link_libraries(core PUBLIC common PRIVATE audio_core video_core)
+target_link_libraries(core PUBLIC common PRIVATE audio_core network video_core)
 target_link_libraries(core PUBLIC Boost::boost PRIVATE fmt::fmt nlohmann_json::nlohmann_json mbedtls Opus::Opus)
 if (MINGW)
     target_link_libraries(core PRIVATE ${MSWSOCK_LIBRARY})
diff --git a/src/core/announce_multiplayer_session.cpp b/src/core/announce_multiplayer_session.cpp
new file mode 100644
index 000000000..d73a488cf
--- /dev/null
+++ b/src/core/announce_multiplayer_session.cpp
@@ -0,0 +1,164 @@
+// SPDX-FileCopyrightText: Copyright 2017 Citra Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <chrono>
+#include <future>
+#include <vector>
+#include "announce_multiplayer_session.h"
+#include "common/announce_multiplayer_room.h"
+#include "common/assert.h"
+#include "common/settings.h"
+#include "network/network.h"
+
+#ifdef ENABLE_WEB_SERVICE
+#include "web_service/announce_room_json.h"
+#endif
+
+namespace Core {
+
+// Time between room is announced to web_service
+static constexpr std::chrono::seconds announce_time_interval(15);
+
+AnnounceMultiplayerSession::AnnounceMultiplayerSession(Network::RoomNetwork& room_network_)
+    : room_network{room_network_} {
+#ifdef ENABLE_WEB_SERVICE
+    backend = std::make_unique<WebService::RoomJson>(Settings::values.web_api_url.GetValue(),
+                                                     Settings::values.yuzu_username.GetValue(),
+                                                     Settings::values.yuzu_token.GetValue());
+#else
+    backend = std::make_unique<AnnounceMultiplayerRoom::NullBackend>();
+#endif
+}
+
+WebService::WebResult AnnounceMultiplayerSession::Register() {
+    std::shared_ptr<Network::Room> room = room_network.GetRoom().lock();
+    if (!room) {
+        return WebService::WebResult{WebService::WebResult::Code::LibError,
+                                     "Network is not initialized", ""};
+    }
+    if (room->GetState() != Network::Room::State::Open) {
+        return WebService::WebResult{WebService::WebResult::Code::LibError, "Room is not open", ""};
+    }
+    UpdateBackendData(room);
+    WebService::WebResult result = backend->Register();
+    if (result.result_code != WebService::WebResult::Code::Success) {
+        return result;
+    }
+    LOG_INFO(WebService, "Room has been registered");
+    room->SetVerifyUID(result.returned_data);
+    registered = true;
+    return WebService::WebResult{WebService::WebResult::Code::Success, "", ""};
+}
+
+void AnnounceMultiplayerSession::Start() {
+    if (announce_multiplayer_thread) {
+        Stop();
+    }
+    shutdown_event.Reset();
+    announce_multiplayer_thread =
+        std::make_unique<std::thread>(&AnnounceMultiplayerSession::AnnounceMultiplayerLoop, this);
+}
+
+void AnnounceMultiplayerSession::Stop() {
+    if (announce_multiplayer_thread) {
+        shutdown_event.Set();
+        announce_multiplayer_thread->join();
+        announce_multiplayer_thread.reset();
+        backend->Delete();
+        registered = false;
+    }
+}
+
+AnnounceMultiplayerSession::CallbackHandle AnnounceMultiplayerSession::BindErrorCallback(
+    std::function<void(const WebService::WebResult&)> function) {
+    std::lock_guard lock(callback_mutex);
+    auto handle = std::make_shared<std::function<void(const WebService::WebResult&)>>(function);
+    error_callbacks.insert(handle);
+    return handle;
+}
+
+void AnnounceMultiplayerSession::UnbindErrorCallback(CallbackHandle handle) {
+    std::lock_guard lock(callback_mutex);
+    error_callbacks.erase(handle);
+}
+
+AnnounceMultiplayerSession::~AnnounceMultiplayerSession() {
+    Stop();
+}
+
+void AnnounceMultiplayerSession::UpdateBackendData(std::shared_ptr<Network::Room> room) {
+    Network::RoomInformation room_information = room->GetRoomInformation();
+    std::vector<AnnounceMultiplayerRoom::Member> memberlist = room->GetRoomMemberList();
+    backend->SetRoomInformation(room_information.name, room_information.description,
+                                room_information.port, room_information.member_slots,
+                                Network::network_version, room->HasPassword(),
+                                room_information.preferred_game);
+    backend->ClearPlayers();
+    for (const auto& member : memberlist) {
+        backend->AddPlayer(member);
+    }
+}
+
+void AnnounceMultiplayerSession::AnnounceMultiplayerLoop() {
+    // Invokes all current bound error callbacks.
+    const auto ErrorCallback = [this](WebService::WebResult result) {
+        std::lock_guard<std::mutex> lock(callback_mutex);
+        for (auto callback : error_callbacks) {
+            (*callback)(result);
+        }
+    };
+
+    if (!registered) {
+        WebService::WebResult result = Register();
+        if (result.result_code != WebService::WebResult::Code::Success) {
+            ErrorCallback(result);
+            return;
+        }
+    }
+
+    auto update_time = std::chrono::steady_clock::now();
+    std::future<WebService::WebResult> future;
+    while (!shutdown_event.WaitUntil(update_time)) {
+        update_time += announce_time_interval;
+        std::shared_ptr<Network::Room> room = room_network.GetRoom().lock();
+        if (!room) {
+            break;
+        }
+        if (room->GetState() != Network::Room::State::Open) {
+            break;
+        }
+        UpdateBackendData(room);
+        WebService::WebResult result = backend->Update();
+        if (result.result_code != WebService::WebResult::Code::Success) {
+            ErrorCallback(result);
+        }
+        if (result.result_string == "404") {
+            registered = false;
+            // Needs to register the room again
+            WebService::WebResult register_result = Register();
+            if (register_result.result_code != WebService::WebResult::Code::Success) {
+                ErrorCallback(register_result);
+            }
+        }
+    }
+}
+
+AnnounceMultiplayerRoom::RoomList AnnounceMultiplayerSession::GetRoomList() {
+    return backend->GetRoomList();
+}
+
+bool AnnounceMultiplayerSession::IsRunning() const {
+    return announce_multiplayer_thread != nullptr;
+}
+
+void AnnounceMultiplayerSession::UpdateCredentials() {
+    ASSERT_MSG(!IsRunning(), "Credentials can only be updated when session is not running");
+
+#ifdef ENABLE_WEB_SERVICE
+    backend = std::make_unique<WebService::RoomJson>(Settings::values.web_api_url.GetValue(),
+                                                     Settings::values.yuzu_username.GetValue(),
+                                                     Settings::values.yuzu_token.GetValue());
+#endif
+}
+
+} // namespace Core
diff --git a/src/core/announce_multiplayer_session.h b/src/core/announce_multiplayer_session.h
new file mode 100644
index 000000000..db790f7d2
--- /dev/null
+++ b/src/core/announce_multiplayer_session.h
@@ -0,0 +1,98 @@
+// SPDX-FileCopyrightText: Copyright 2017 Citra Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <atomic>
+#include <functional>
+#include <memory>
+#include <mutex>
+#include <set>
+#include <thread>
+#include "common/announce_multiplayer_room.h"
+#include "common/common_types.h"
+#include "common/thread.h"
+
+namespace Network {
+class Room;
+class RoomNetwork;
+} // namespace Network
+
+namespace Core {
+
+/**
+ * Instruments AnnounceMultiplayerRoom::Backend.
+ * Creates a thread that regularly updates the room information and submits them
+ * An async get of room information is also possible
+ */
+class AnnounceMultiplayerSession {
+public:
+    using CallbackHandle = std::shared_ptr<std::function<void(const WebService::WebResult&)>>;
+    AnnounceMultiplayerSession(Network::RoomNetwork& room_network_);
+    ~AnnounceMultiplayerSession();
+
+    /**
+     * Allows to bind a function that will get called if the announce encounters an error
+     * @param function The function that gets called
+     * @return A handle that can be used the unbind the function
+     */
+    CallbackHandle BindErrorCallback(std::function<void(const WebService::WebResult&)> function);
+
+    /**
+     * Unbind a function from the error callbacks
+     * @param handle The handle for the function that should get unbind
+     */
+    void UnbindErrorCallback(CallbackHandle handle);
+
+    /**
+     * Registers a room to web services
+     * @return The result of the registration attempt.
+     */
+    WebService::WebResult Register();
+
+    /**
+     * Starts the announce of a room to web services
+     */
+    void Start();
+
+    /**
+     * Stops the announce to web services
+     */
+    void Stop();
+
+    /**
+     *  Returns a list of all room information the backend got
+     * @param func A function that gets executed when the async get finished, e.g. a signal
+     * @return a list of rooms received from the web service
+     */
+    AnnounceMultiplayerRoom::RoomList GetRoomList();
+
+    /**
+     * Whether the announce session is still running
+     */
+    bool IsRunning() const;
+
+    /**
+     * Recreates the backend, updating the credentials.
+     * This can only be used when the announce session is not running.
+     */
+    void UpdateCredentials();
+
+private:
+    void UpdateBackendData(std::shared_ptr<Network::Room> room);
+    void AnnounceMultiplayerLoop();
+
+    Common::Event shutdown_event;
+    std::mutex callback_mutex;
+    std::set<CallbackHandle> error_callbacks;
+    std::unique_ptr<std::thread> announce_multiplayer_thread;
+
+    /// Backend interface that logs fields
+    std::unique_ptr<AnnounceMultiplayerRoom::Backend> backend;
+
+    std::atomic_bool registered = false; ///< Whether the room has been registered
+
+    Network::RoomNetwork& room_network;
+};
+
+} // namespace Core
diff --git a/src/core/core.cpp b/src/core/core.cpp
index 0ede0d85c..95791a07f 100644
--- a/src/core/core.cpp
+++ b/src/core/core.cpp
@@ -43,14 +43,15 @@
 #include "core/hle/service/service.h"
 #include "core/hle/service/sm/sm.h"
 #include "core/hle/service/time/time_manager.h"
+#include "core/internal_network/network.h"
 #include "core/loader/loader.h"
 #include "core/memory.h"
 #include "core/memory/cheat_engine.h"
-#include "core/network/network.h"
 #include "core/perf_stats.h"
 #include "core/reporter.h"
 #include "core/telemetry_session.h"
 #include "core/tools/freezer.h"
+#include "network/network.h"
 #include "video_core/renderer_base.h"
 #include "video_core/video_core.h"
 
@@ -130,7 +131,7 @@ FileSys::VirtualFile GetGameFileFromPath(const FileSys::VirtualFilesystem& vfs,
 
 struct System::Impl {
     explicit Impl(System& system)
-        : kernel{system}, fs_controller{system}, memory{system}, hid_core{},
+        : kernel{system}, fs_controller{system}, memory{system}, hid_core{}, room_network{},
           cpu_manager{system}, reporter{system}, applet_manager{system}, time_manager{system} {}
 
     SystemResultStatus Run() {
@@ -315,6 +316,17 @@ struct System::Impl {
         GetAndResetPerfStats();
         perf_stats->BeginSystemFrame();
 
+        std::string name = "Unknown Game";
+        if (app_loader->ReadTitle(name) != Loader::ResultStatus::Success) {
+            LOG_ERROR(Core, "Failed to read title for ROM (Error {})", load_result);
+        }
+        if (auto room_member = room_network.GetRoomMember().lock()) {
+            Network::GameInfo game_info;
+            game_info.name = name;
+            game_info.id = program_id;
+            room_member->SendGameInfo(game_info);
+        }
+
         status = SystemResultStatus::Success;
         return status;
     }
@@ -362,6 +374,11 @@ struct System::Impl {
         memory.Reset();
         applet_manager.ClearAll();
 
+        if (auto room_member = room_network.GetRoomMember().lock()) {
+            Network::GameInfo game_info{};
+            room_member->SendGameInfo(game_info);
+        }
+
         LOG_DEBUG(Core, "Shutdown OK");
     }
 
@@ -434,6 +451,8 @@ struct System::Impl {
     std::unique_ptr<AudioCore::AudioCore> audio_core;
     Core::Memory::Memory memory;
     Core::HID::HIDCore hid_core;
+    Network::RoomNetwork room_network;
+
     CpuManager cpu_manager;
     std::atomic_bool is_powered_on{};
     bool exit_lock = false;
@@ -879,6 +898,14 @@ const Core::Debugger& System::GetDebugger() const {
     return *impl->debugger;
 }
 
+Network::RoomNetwork& System::GetRoomNetwork() {
+    return impl->room_network;
+}
+
+const Network::RoomNetwork& System::GetRoomNetwork() const {
+    return impl->room_network;
+}
+
 void System::RegisterExecuteProgramCallback(ExecuteProgramCallback&& callback) {
     impl->execute_program_callback = std::move(callback);
 }
diff --git a/src/core/core.h b/src/core/core.h
index a49d1214b..13122dd61 100644
--- a/src/core/core.h
+++ b/src/core/core.h
@@ -97,6 +97,10 @@ namespace Core::HID {
 class HIDCore;
 }
 
+namespace Network {
+class RoomNetwork;
+}
+
 namespace Core {
 
 class ARM_Interface;
@@ -379,6 +383,12 @@ public:
     [[nodiscard]] Core::Debugger& GetDebugger();
     [[nodiscard]] const Core::Debugger& GetDebugger() const;
 
+    /// Gets a mutable reference to the Room Network.
+    [[nodiscard]] Network::RoomNetwork& GetRoomNetwork();
+
+    /// Gets an immutable reference to the Room Network.
+    [[nodiscard]] const Network::RoomNetwork& GetRoomNetwork() const;
+
     void SetExitLock(bool locked);
     [[nodiscard]] bool GetExitLock() const;
 
diff --git a/src/core/hle/service/nifm/nifm.cpp b/src/core/hle/service/nifm/nifm.cpp
index 7055ea93e..2889973e4 100644
--- a/src/core/hle/service/nifm/nifm.cpp
+++ b/src/core/hle/service/nifm/nifm.cpp
@@ -18,8 +18,8 @@ namespace {
 
 } // Anonymous namespace
 
-#include "core/network/network.h"
-#include "core/network/network_interface.h"
+#include "core/internal_network/network.h"
+#include "core/internal_network/network_interface.h"
 
 namespace Service::NIFM {
 
diff --git a/src/core/hle/service/sockets/bsd.cpp b/src/core/hle/service/sockets/bsd.cpp
index 3e9dc4a13..c7194731e 100644
--- a/src/core/hle/service/sockets/bsd.cpp
+++ b/src/core/hle/service/sockets/bsd.cpp
@@ -13,8 +13,8 @@
 #include "core/hle/kernel/k_thread.h"
 #include "core/hle/service/sockets/bsd.h"
 #include "core/hle/service/sockets/sockets_translate.h"
-#include "core/network/network.h"
-#include "core/network/sockets.h"
+#include "core/internal_network/network.h"
+#include "core/internal_network/sockets.h"
 
 namespace Service::Sockets {
 
diff --git a/src/core/hle/service/sockets/bsd.h b/src/core/hle/service/sockets/bsd.h
index fed740d87..9ea36428d 100644
--- a/src/core/hle/service/sockets/bsd.h
+++ b/src/core/hle/service/sockets/bsd.h
@@ -16,7 +16,7 @@ class System;
 
 namespace Network {
 class Socket;
-}
+} // namespace Network
 
 namespace Service::Sockets {
 
diff --git a/src/core/hle/service/sockets/sockets_translate.cpp b/src/core/hle/service/sockets/sockets_translate.cpp
index 9c0936d97..2db10ec81 100644
--- a/src/core/hle/service/sockets/sockets_translate.cpp
+++ b/src/core/hle/service/sockets/sockets_translate.cpp
@@ -7,7 +7,7 @@
 #include "common/common_types.h"
 #include "core/hle/service/sockets/sockets.h"
 #include "core/hle/service/sockets/sockets_translate.h"
-#include "core/network/network.h"
+#include "core/internal_network/network.h"
 
 namespace Service::Sockets {
 
diff --git a/src/core/hle/service/sockets/sockets_translate.h b/src/core/hle/service/sockets/sockets_translate.h
index 5e9809add..c93291d3e 100644
--- a/src/core/hle/service/sockets/sockets_translate.h
+++ b/src/core/hle/service/sockets/sockets_translate.h
@@ -7,7 +7,7 @@
 
 #include "common/common_types.h"
 #include "core/hle/service/sockets/sockets.h"
-#include "core/network/network.h"
+#include "core/internal_network/network.h"
 
 namespace Service::Sockets {
 
diff --git a/src/core/network/network.cpp b/src/core/internal_network/network.cpp
index fdafbea92..36c43cc8f 100644
--- a/src/core/network/network.cpp
+++ b/src/core/internal_network/network.cpp
@@ -29,9 +29,9 @@
 #include "common/common_types.h"
 #include "common/logging/log.h"
 #include "common/settings.h"
-#include "core/network/network.h"
-#include "core/network/network_interface.h"
-#include "core/network/sockets.h"
+#include "core/internal_network/network.h"
+#include "core/internal_network/network_interface.h"
+#include "core/internal_network/sockets.h"
 
 namespace Network {
 
diff --git a/src/core/network/network.h b/src/core/internal_network/network.h
index 10e5ef10d..10e5ef10d 100644
--- a/src/core/network/network.h
+++ b/src/core/internal_network/network.h
diff --git a/src/core/network/network_interface.cpp b/src/core/internal_network/network_interface.cpp
index 15ecc6abf..0f0a66160 100644
--- a/src/core/network/network_interface.cpp
+++ b/src/core/internal_network/network_interface.cpp
@@ -11,7 +11,7 @@
 #include "common/logging/log.h"
 #include "common/settings.h"
 #include "common/string_util.h"
-#include "core/network/network_interface.h"
+#include "core/internal_network/network_interface.h"
 
 #ifdef _WIN32
 #include <iphlpapi.h>
diff --git a/src/core/network/network_interface.h b/src/core/internal_network/network_interface.h
index 9b98b6b42..9b98b6b42 100644
--- a/src/core/network/network_interface.h
+++ b/src/core/internal_network/network_interface.h
diff --git a/src/core/network/sockets.h b/src/core/internal_network/sockets.h
index f889159f5..77e27e928 100644
--- a/src/core/network/sockets.h
+++ b/src/core/internal_network/sockets.h
@@ -3,6 +3,7 @@
 
 #pragma once
 
+#include <map>
 #include <memory>
 #include <utility>
 
@@ -12,7 +13,7 @@
 #endif
 
 #include "common/common_types.h"
-#include "core/network/network.h"
+#include "core/internal_network/network.h"
 
 // TODO: C++20 Replace std::vector usages with std::span