// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later

#include <codecvt>
#include <locale>
#include <string>
#include <string_view>
#include <dlfcn.h>

#ifdef ARCHITECTURE_arm64
#include <adrenotools/driver.h>
#endif

#include <android/api-level.h>
#include <android/native_window_jni.h>
#include <common/fs/fs.h>
#include <core/file_sys/patch_manager.h>
#include <core/file_sys/savedata_factory.h>
#include <core/loader/nro.h>
#include <jni.h>

#include "common/detached_tasks.h"
#include "common/dynamic_library.h"
#include "common/fs/path_util.h"
#include "common/logging/backend.h"
#include "common/logging/log.h"
#include "common/microprofile.h"
#include "common/scm_rev.h"
#include "common/scope_exit.h"
#include "common/settings.h"
#include "common/string_util.h"
#include "core/core.h"
#include "core/cpu_manager.h"
#include "core/crypto/key_manager.h"
#include "core/file_sys/card_image.h"
#include "core/file_sys/content_archive.h"
#include "core/file_sys/submission_package.h"
#include "core/file_sys/vfs.h"
#include "core/file_sys/vfs_real.h"
#include "core/frontend/applets/cabinet.h"
#include "core/frontend/applets/controller.h"
#include "core/frontend/applets/error.h"
#include "core/frontend/applets/general_frontend.h"
#include "core/frontend/applets/mii_edit.h"
#include "core/frontend/applets/profile_select.h"
#include "core/frontend/applets/software_keyboard.h"
#include "core/frontend/applets/web_browser.h"
#include "core/hid/emulated_controller.h"
#include "core/hid/hid_core.h"
#include "core/hid/hid_types.h"
#include "core/hle/service/am/applet_ae.h"
#include "core/hle/service/am/applet_oe.h"
#include "core/hle/service/am/applets/applets.h"
#include "core/hle/service/filesystem/filesystem.h"
#include "core/loader/loader.h"
#include "frontend_common/config.h"
#include "jni/android_common/android_common.h"
#include "jni/id_cache.h"
#include "jni/native.h"
#include "video_core/renderer_base.h"

#define jconst [[maybe_unused]] const auto
#define jauto [[maybe_unused]] auto

static EmulationSession s_instance;

EmulationSession::EmulationSession() {
    m_vfs = std::make_shared<FileSys::RealVfsFilesystem>();
}

EmulationSession& EmulationSession::GetInstance() {
    return s_instance;
}

const Core::System& EmulationSession::System() const {
    return m_system;
}

Core::System& EmulationSession::System() {
    return m_system;
}

FileSys::ManualContentProvider* EmulationSession::GetContentProvider() {
    return m_manual_provider.get();
}

const EmuWindow_Android& EmulationSession::Window() const {
    return *m_window;
}

EmuWindow_Android& EmulationSession::Window() {
    return *m_window;
}

ANativeWindow* EmulationSession::NativeWindow() const {
    return m_native_window;
}

void EmulationSession::SetNativeWindow(ANativeWindow* native_window) {
    m_native_window = native_window;
}

int EmulationSession::InstallFileToNand(std::string filename, std::string file_extension) {
    jconst copy_func = [](const FileSys::VirtualFile& src, const FileSys::VirtualFile& dest,
                          std::size_t block_size) {
        if (src == nullptr || dest == nullptr) {
            return false;
        }
        if (!dest->Resize(src->GetSize())) {
            return false;
        }

        using namespace Common::Literals;
        [[maybe_unused]] std::vector<u8> buffer(1_MiB);

        for (std::size_t i = 0; i < src->GetSize(); i += buffer.size()) {
            jconst read = src->Read(buffer.data(), buffer.size(), i);
            dest->Write(buffer.data(), read, i);
        }
        return true;
    };

    enum InstallResult {
        Success = 0,
        SuccessFileOverwritten = 1,
        InstallError = 2,
        ErrorBaseGame = 3,
        ErrorFilenameExtension = 4,
    };

    [[maybe_unused]] std::shared_ptr<FileSys::NSP> nsp;
    if (file_extension == "nsp") {
        nsp = std::make_shared<FileSys::NSP>(m_vfs->OpenFile(filename, FileSys::Mode::Read));
        if (nsp->IsExtractedType()) {
            return InstallError;
        }
    } else {
        return ErrorFilenameExtension;
    }

    if (!nsp) {
        return InstallError;
    }

    if (nsp->GetStatus() != Loader::ResultStatus::Success) {
        return InstallError;
    }

    jconst res = m_system.GetFileSystemController().GetUserNANDContents()->InstallEntry(*nsp, true,
                                                                                        copy_func);

    switch (res) {
    case FileSys::InstallResult::Success:
        return Success;
    case FileSys::InstallResult::OverwriteExisting:
        return SuccessFileOverwritten;
    case FileSys::InstallResult::ErrorBaseInstall:
        return ErrorBaseGame;
    default:
        return InstallError;
    }
}

void EmulationSession::InitializeGpuDriver(const std::string& hook_lib_dir,
                                           const std::string& custom_driver_dir,
                                           const std::string& custom_driver_name,
                                           const std::string& file_redirect_dir) {
#ifdef ARCHITECTURE_arm64
    void* handle{};
    const char* file_redirect_dir_{};
    int featureFlags{};

    // Enable driver file redirection when renderer debugging is enabled.
    if (Settings::values.renderer_debug && file_redirect_dir.size()) {
        featureFlags |= ADRENOTOOLS_DRIVER_FILE_REDIRECT;
        file_redirect_dir_ = file_redirect_dir.c_str();
    }

    // Try to load a custom driver.
    if (custom_driver_name.size()) {
        handle = adrenotools_open_libvulkan(
            RTLD_NOW, featureFlags | ADRENOTOOLS_DRIVER_CUSTOM, nullptr, hook_lib_dir.c_str(),
            custom_driver_dir.c_str(), custom_driver_name.c_str(), file_redirect_dir_, nullptr);
    }

    // Try to load the system driver.
    if (!handle) {
        handle = adrenotools_open_libvulkan(RTLD_NOW, featureFlags, nullptr, hook_lib_dir.c_str(),
                                            nullptr, nullptr, file_redirect_dir_, nullptr);
    }

    m_vulkan_library = std::make_shared<Common::DynamicLibrary>(handle);
#endif
}

bool EmulationSession::IsRunning() const {
    return m_is_running;
}

bool EmulationSession::IsPaused() const {
    return m_is_running && m_is_paused;
}

const Core::PerfStatsResults& EmulationSession::PerfStats() {
    m_perf_stats = m_system.GetAndResetPerfStats();
    return m_perf_stats;
}

void EmulationSession::SurfaceChanged() {
    if (!IsRunning()) {
        return;
    }
    m_window->OnSurfaceChanged(m_native_window);
}

void EmulationSession::ConfigureFilesystemProvider(const std::string& filepath) {
    const auto file = m_system.GetFilesystem()->OpenFile(filepath, FileSys::Mode::Read);
    if (!file) {
        return;
    }

    auto loader = Loader::GetLoader(m_system, file);
    if (!loader) {
        return;
    }

    const auto file_type = loader->GetFileType();
    if (file_type == Loader::FileType::Unknown || file_type == Loader::FileType::Error) {
        return;
    }

    u64 program_id = 0;
    const auto res2 = loader->ReadProgramId(program_id);
    if (res2 == Loader::ResultStatus::Success && file_type == Loader::FileType::NCA) {
        m_manual_provider->AddEntry(FileSys::TitleType::Application,
                                    FileSys::GetCRTypeFromNCAType(FileSys::NCA{file}.GetType()),
                                    program_id, file);
    } else if (res2 == Loader::ResultStatus::Success &&
               (file_type == Loader::FileType::XCI || file_type == Loader::FileType::NSP)) {
        const auto nsp = file_type == Loader::FileType::NSP
                             ? std::make_shared<FileSys::NSP>(file)
                             : FileSys::XCI{file}.GetSecurePartitionNSP();
        for (const auto& title : nsp->GetNCAs()) {
            for (const auto& entry : title.second) {
                m_manual_provider->AddEntry(entry.first.first, entry.first.second, title.first,
                                            entry.second->GetBaseFile());
            }
        }
    }
}

void EmulationSession::InitializeSystem(bool reload) {
    if (!reload) {
        // Initialize logging system
        Common::Log::Initialize();
        Common::Log::SetColorConsoleBackendEnabled(true);
        Common::Log::Start();
    }

    // Initialize filesystem.
    m_system.SetFilesystem(m_vfs);
    m_system.GetUserChannel().clear();
    m_manual_provider = std::make_unique<FileSys::ManualContentProvider>();
    m_system.SetContentProvider(std::make_unique<FileSys::ContentProviderUnion>());
    m_system.RegisterContentProvider(FileSys::ContentProviderUnionSlot::FrontendManual,
                                     m_manual_provider.get());
    m_system.GetFileSystemController().CreateFactories(*m_vfs);
}

Core::SystemResultStatus EmulationSession::InitializeEmulation(const std::string& filepath) {
    std::scoped_lock lock(m_mutex);

    // Create the render window.
    m_window =
        std::make_unique<EmuWindow_Android>(&m_input_subsystem, m_native_window, m_vulkan_library);

    // Initialize system.
    jauto android_keyboard = std::make_unique<SoftwareKeyboard::AndroidKeyboard>();
    m_software_keyboard = android_keyboard.get();
    m_system.SetShuttingDown(false);
    m_system.ApplySettings();
    Settings::LogSettings();
    m_system.HIDCore().ReloadInputDevices();
    m_system.SetAppletFrontendSet({
        nullptr,                     // Amiibo Settings
        nullptr,                     // Controller Selector
        nullptr,                     // Error Display
        nullptr,                     // Mii Editor
        nullptr,                     // Parental Controls
        nullptr,                     // Photo Viewer
        nullptr,                     // Profile Selector
        std::move(android_keyboard), // Software Keyboard
        nullptr,                     // Web Browser
    });

    // Initialize filesystem.
    ConfigureFilesystemProvider(filepath);

    // Load the ROM.
    m_load_result = m_system.Load(EmulationSession::GetInstance().Window(), filepath);
    if (m_load_result != Core::SystemResultStatus::Success) {
        return m_load_result;
    }

    // Complete initialization.
    m_system.GPU().Start();
    m_system.GetCpuManager().OnGpuReady();
    m_system.RegisterExitCallback([&] { HaltEmulation(); });

    return Core::SystemResultStatus::Success;
}

void EmulationSession::ShutdownEmulation() {
    std::scoped_lock lock(m_mutex);

    m_is_running = false;

    // Unload user input.
    m_system.HIDCore().UnloadInputDevices();

    // Shutdown the main emulated process
    if (m_load_result == Core::SystemResultStatus::Success) {
        m_system.DetachDebugger();
        m_system.ShutdownMainProcess();
        m_detached_tasks.WaitForAllTasks();
        m_load_result = Core::SystemResultStatus::ErrorNotInitialized;
        m_window.reset();
        OnEmulationStopped(Core::SystemResultStatus::Success);
        return;
    }

    // Tear down the render window.
    m_window.reset();
}

void EmulationSession::PauseEmulation() {
    std::scoped_lock lock(m_mutex);
    m_system.Pause();
    m_is_paused = true;
}

void EmulationSession::UnPauseEmulation() {
    std::scoped_lock lock(m_mutex);
    m_system.Run();
    m_is_paused = false;
}

void EmulationSession::HaltEmulation() {
    std::scoped_lock lock(m_mutex);
    m_is_running = false;
    m_cv.notify_one();
}

void EmulationSession::RunEmulation() {
    {
        std::scoped_lock lock(m_mutex);
        m_is_running = true;
    }

    // Load the disk shader cache.
    if (Settings::values.use_disk_shader_cache.GetValue()) {
        LoadDiskCacheProgress(VideoCore::LoadCallbackStage::Prepare, 0, 0);
        m_system.Renderer().ReadRasterizer()->LoadDiskResources(
            m_system.GetApplicationProcessProgramID(), std::stop_token{}, LoadDiskCacheProgress);
        LoadDiskCacheProgress(VideoCore::LoadCallbackStage::Complete, 0, 0);
    }

    void(m_system.Run());

    if (m_system.DebuggerEnabled()) {
        m_system.InitializeDebugger();
    }

    while (true) {
        {
            [[maybe_unused]] std::unique_lock lock(m_mutex);
            if (m_cv.wait_for(lock, std::chrono::milliseconds(800),
                              [&]() { return !m_is_running; })) {
                // Emulation halted.
                break;
            }
        }
    }
}

bool EmulationSession::IsHandheldOnly() {
    jconst npad_style_set = m_system.HIDCore().GetSupportedStyleTag();

    if (npad_style_set.fullkey == 1) {
        return false;
    }

    if (npad_style_set.handheld == 0) {
        return false;
    }

    return !Settings::IsDockedMode();
}

void EmulationSession::SetDeviceType([[maybe_unused]] int index, int type) {
    jauto controller = m_system.HIDCore().GetEmulatedControllerByIndex(index);
    controller->SetNpadStyleIndex(static_cast<Core::HID::NpadStyleIndex>(type));
}

void EmulationSession::OnGamepadConnectEvent([[maybe_unused]] int index) {
    jauto controller = m_system.HIDCore().GetEmulatedControllerByIndex(index);

    // Ensure that player1 is configured correctly and handheld disconnected
    if (controller->GetNpadIdType() == Core::HID::NpadIdType::Player1) {
        jauto handheld = m_system.HIDCore().GetEmulatedController(Core::HID::NpadIdType::Handheld);

        if (controller->GetNpadStyleIndex() == Core::HID::NpadStyleIndex::Handheld) {
            handheld->SetNpadStyleIndex(Core::HID::NpadStyleIndex::ProController);
            controller->SetNpadStyleIndex(Core::HID::NpadStyleIndex::ProController);
            handheld->Disconnect();
        }
    }

    // Ensure that handheld is configured correctly and player 1 disconnected
    if (controller->GetNpadIdType() == Core::HID::NpadIdType::Handheld) {
        jauto player1 = m_system.HIDCore().GetEmulatedController(Core::HID::NpadIdType::Player1);

        if (controller->GetNpadStyleIndex() != Core::HID::NpadStyleIndex::Handheld) {
            player1->SetNpadStyleIndex(Core::HID::NpadStyleIndex::Handheld);
            controller->SetNpadStyleIndex(Core::HID::NpadStyleIndex::Handheld);
            player1->Disconnect();
        }
    }

    if (!controller->IsConnected()) {
        controller->Connect();
    }
}

void EmulationSession::OnGamepadDisconnectEvent([[maybe_unused]] int index) {
    jauto controller = m_system.HIDCore().GetEmulatedControllerByIndex(index);
    controller->Disconnect();
}

SoftwareKeyboard::AndroidKeyboard* EmulationSession::SoftwareKeyboard() {
    return m_software_keyboard;
}

void EmulationSession::LoadDiskCacheProgress(VideoCore::LoadCallbackStage stage, int progress,
                                             int max) {
    JNIEnv* env = IDCache::GetEnvForThread();
    env->CallStaticVoidMethod(IDCache::GetDiskCacheProgressClass(),
                              IDCache::GetDiskCacheLoadProgress(), static_cast<jint>(stage),
                              static_cast<jint>(progress), static_cast<jint>(max));
}

void EmulationSession::OnEmulationStarted() {
    JNIEnv* env = IDCache::GetEnvForThread();
    env->CallStaticVoidMethod(IDCache::GetNativeLibraryClass(), IDCache::GetOnEmulationStarted());
}

void EmulationSession::OnEmulationStopped(Core::SystemResultStatus result) {
    JNIEnv* env = IDCache::GetEnvForThread();
    env->CallStaticVoidMethod(IDCache::GetNativeLibraryClass(), IDCache::GetOnEmulationStopped(),
                              static_cast<jint>(result));
}

u64 EmulationSession::GetProgramId(JNIEnv* env, jstring jprogramId) {
    auto program_id_string = GetJString(env, jprogramId);
    try {
        return std::stoull(program_id_string);
    } catch (...) {
        return 0;
    }
}

static Core::SystemResultStatus RunEmulation(const std::string& filepath) {
    MicroProfileOnThreadCreate("EmuThread");
    SCOPE_EXIT({ MicroProfileShutdown(); });

    LOG_INFO(Frontend, "starting");

    if (filepath.empty()) {
        LOG_CRITICAL(Frontend, "failed to load: filepath empty!");
        return Core::SystemResultStatus::ErrorLoader;
    }

    SCOPE_EXIT({ EmulationSession::GetInstance().ShutdownEmulation(); });

    jconst result = EmulationSession::GetInstance().InitializeEmulation(filepath);
    if (result != Core::SystemResultStatus::Success) {
        return result;
    }

    EmulationSession::GetInstance().RunEmulation();

    return Core::SystemResultStatus::Success;
}

extern "C" {

void Java_org_yuzu_yuzu_1emu_NativeLibrary_surfaceChanged(JNIEnv* env, jobject instance,
                                                          [[maybe_unused]] jobject surf) {
    EmulationSession::GetInstance().SetNativeWindow(ANativeWindow_fromSurface(env, surf));
    EmulationSession::GetInstance().SurfaceChanged();
}

void Java_org_yuzu_yuzu_1emu_NativeLibrary_surfaceDestroyed(JNIEnv* env, jobject instance) {
    ANativeWindow_release(EmulationSession::GetInstance().NativeWindow());
    EmulationSession::GetInstance().SetNativeWindow(nullptr);
    EmulationSession::GetInstance().SurfaceChanged();
}

void Java_org_yuzu_yuzu_1emu_NativeLibrary_setAppDirectory(JNIEnv* env, jobject instance,
                                                           [[maybe_unused]] jstring j_directory) {
    Common::FS::SetAppDirectory(GetJString(env, j_directory));
}

int Java_org_yuzu_yuzu_1emu_NativeLibrary_installFileToNand(JNIEnv* env, jobject instance,
                                                            jstring j_file,
                                                            jstring j_file_extension) {
    return EmulationSession::GetInstance().InstallFileToNand(GetJString(env, j_file),
                                                             GetJString(env, j_file_extension));
}

jboolean Java_org_yuzu_yuzu_1emu_NativeLibrary_doesUpdateMatchProgram(JNIEnv* env, jobject jobj,
                                                                      jstring jprogramId,
                                                                      jstring jupdatePath) {
    u64 program_id = EmulationSession::GetProgramId(env, jprogramId);
    std::string updatePath = GetJString(env, jupdatePath);
    std::shared_ptr<FileSys::NSP> nsp = std::make_shared<FileSys::NSP>(
        EmulationSession::GetInstance().System().GetFilesystem()->OpenFile(updatePath,
                                                                           FileSys::Mode::Read));
    for (const auto& item : nsp->GetNCAs()) {
        for (const auto& nca_details : item.second) {
            if (nca_details.second->GetName().ends_with(".cnmt.nca")) {
                auto update_id = nca_details.second->GetTitleId() & ~0xFFFULL;
                if (update_id == program_id) {
                    return true;
                }
            }
        }
    }
    return false;
}

void JNICALL Java_org_yuzu_yuzu_1emu_NativeLibrary_initializeGpuDriver(JNIEnv* env, jclass clazz,
                                                                       jstring hook_lib_dir,
                                                                       jstring custom_driver_dir,
                                                                       jstring custom_driver_name,
                                                                       jstring file_redirect_dir) {
    EmulationSession::GetInstance().InitializeGpuDriver(
        GetJString(env, hook_lib_dir), GetJString(env, custom_driver_dir),
        GetJString(env, custom_driver_name), GetJString(env, file_redirect_dir));
}

[[maybe_unused]] static bool CheckKgslPresent() {
    constexpr auto KgslPath{"/dev/kgsl-3d0"};

    return access(KgslPath, F_OK) == 0;
}

[[maybe_unused]] bool SupportsCustomDriver() {
    return android_get_device_api_level() >= 28 && CheckKgslPresent();
}

jboolean JNICALL Java_org_yuzu_yuzu_1emu_utils_GpuDriverHelper_supportsCustomDriverLoading(
    JNIEnv* env, jobject instance) {
#ifdef ARCHITECTURE_arm64
    // If the KGSL device exists custom drivers can be loaded using adrenotools
    return SupportsCustomDriver();
#else
    return false;
#endif
}

jboolean Java_org_yuzu_yuzu_1emu_NativeLibrary_reloadKeys(JNIEnv* env, jclass clazz) {
    Core::Crypto::KeyManager::Instance().ReloadKeys();
    return static_cast<jboolean>(Core::Crypto::KeyManager::Instance().AreKeysLoaded());
}

void Java_org_yuzu_yuzu_1emu_NativeLibrary_unpauseEmulation(JNIEnv* env, jclass clazz) {
    EmulationSession::GetInstance().UnPauseEmulation();
}

void Java_org_yuzu_yuzu_1emu_NativeLibrary_pauseEmulation(JNIEnv* env, jclass clazz) {
    EmulationSession::GetInstance().PauseEmulation();
}

void Java_org_yuzu_yuzu_1emu_NativeLibrary_stopEmulation(JNIEnv* env, jclass clazz) {
    EmulationSession::GetInstance().HaltEmulation();
}

jboolean Java_org_yuzu_yuzu_1emu_NativeLibrary_isRunning(JNIEnv* env, jclass clazz) {
    return static_cast<jboolean>(EmulationSession::GetInstance().IsRunning());
}

jboolean Java_org_yuzu_yuzu_1emu_NativeLibrary_isPaused(JNIEnv* env, jclass clazz) {
    return static_cast<jboolean>(EmulationSession::GetInstance().IsPaused());
}

jboolean Java_org_yuzu_yuzu_1emu_NativeLibrary_isHandheldOnly(JNIEnv* env, jclass clazz) {
    return EmulationSession::GetInstance().IsHandheldOnly();
}

jboolean Java_org_yuzu_yuzu_1emu_NativeLibrary_setDeviceType(JNIEnv* env, jclass clazz,
                                                             jint j_device, jint j_type) {
    if (EmulationSession::GetInstance().IsRunning()) {
        EmulationSession::GetInstance().SetDeviceType(j_device, j_type);
    }
    return static_cast<jboolean>(true);
}

jboolean Java_org_yuzu_yuzu_1emu_NativeLibrary_onGamePadConnectEvent(JNIEnv* env, jclass clazz,
                                                                     jint j_device) {
    if (EmulationSession::GetInstance().IsRunning()) {
        EmulationSession::GetInstance().OnGamepadConnectEvent(j_device);
    }
    return static_cast<jboolean>(true);
}

jboolean Java_org_yuzu_yuzu_1emu_NativeLibrary_onGamePadDisconnectEvent(JNIEnv* env, jclass clazz,
                                                                        jint j_device) {
    if (EmulationSession::GetInstance().IsRunning()) {
        EmulationSession::GetInstance().OnGamepadDisconnectEvent(j_device);
    }
    return static_cast<jboolean>(true);
}
jboolean Java_org_yuzu_yuzu_1emu_NativeLibrary_onGamePadButtonEvent(JNIEnv* env, jclass clazz,
                                                                    jint j_device, jint j_button,
                                                                    jint action) {
    if (EmulationSession::GetInstance().IsRunning()) {
        // Ensure gamepad is connected
        EmulationSession::GetInstance().OnGamepadConnectEvent(j_device);
        EmulationSession::GetInstance().Window().OnGamepadButtonEvent(j_device, j_button,
                                                                      action != 0);
    }
    return static_cast<jboolean>(true);
}

jboolean Java_org_yuzu_yuzu_1emu_NativeLibrary_onGamePadJoystickEvent(JNIEnv* env, jclass clazz,
                                                                      jint j_device, jint stick_id,
                                                                      jfloat x, jfloat y) {
    if (EmulationSession::GetInstance().IsRunning()) {
        EmulationSession::GetInstance().Window().OnGamepadJoystickEvent(j_device, stick_id, x, y);
    }
    return static_cast<jboolean>(true);
}

jboolean Java_org_yuzu_yuzu_1emu_NativeLibrary_onGamePadMotionEvent(
    JNIEnv* env, jclass clazz, jint j_device, jlong delta_timestamp, jfloat gyro_x, jfloat gyro_y,
    jfloat gyro_z, jfloat accel_x, jfloat accel_y, jfloat accel_z) {
    if (EmulationSession::GetInstance().IsRunning()) {
        EmulationSession::GetInstance().Window().OnGamepadMotionEvent(
            j_device, delta_timestamp, gyro_x, gyro_y, gyro_z, accel_x, accel_y, accel_z);
    }
    return static_cast<jboolean>(true);
}

jboolean Java_org_yuzu_yuzu_1emu_NativeLibrary_onReadNfcTag(JNIEnv* env, jclass clazz,
                                                            jbyteArray j_data) {
    jboolean isCopy{false};
    std::span<u8> data(reinterpret_cast<u8*>(env->GetByteArrayElements(j_data, &isCopy)),
                       static_cast<size_t>(env->GetArrayLength(j_data)));

    if (EmulationSession::GetInstance().IsRunning()) {
        EmulationSession::GetInstance().Window().OnReadNfcTag(data);
    }
    return static_cast<jboolean>(true);
}

jboolean Java_org_yuzu_yuzu_1emu_NativeLibrary_onRemoveNfcTag(JNIEnv* env, jclass clazz) {
    if (EmulationSession::GetInstance().IsRunning()) {
        EmulationSession::GetInstance().Window().OnRemoveNfcTag();
    }
    return static_cast<jboolean>(true);
}

void Java_org_yuzu_yuzu_1emu_NativeLibrary_onTouchPressed(JNIEnv* env, jclass clazz, jint id,
                                                          jfloat x, jfloat y) {
    if (EmulationSession::GetInstance().IsRunning()) {
        EmulationSession::GetInstance().Window().OnTouchPressed(id, x, y);
    }
}

void Java_org_yuzu_yuzu_1emu_NativeLibrary_onTouchMoved(JNIEnv* env, jclass clazz, jint id,
                                                        jfloat x, jfloat y) {
    if (EmulationSession::GetInstance().IsRunning()) {
        EmulationSession::GetInstance().Window().OnTouchMoved(id, x, y);
    }
}

void Java_org_yuzu_yuzu_1emu_NativeLibrary_onTouchReleased(JNIEnv* env, jclass clazz, jint id) {
    if (EmulationSession::GetInstance().IsRunning()) {
        EmulationSession::GetInstance().Window().OnTouchReleased(id);
    }
}

void Java_org_yuzu_yuzu_1emu_NativeLibrary_initializeSystem(JNIEnv* env, jclass clazz,
                                                            jboolean reload) {
    // Initialize the emulated system.
    if (!reload) {
        EmulationSession::GetInstance().System().Initialize();
    }
    EmulationSession::GetInstance().InitializeSystem(reload);
}

jdoubleArray Java_org_yuzu_yuzu_1emu_NativeLibrary_getPerfStats(JNIEnv* env, jclass clazz) {
    jdoubleArray j_stats = env->NewDoubleArray(4);

    if (EmulationSession::GetInstance().IsRunning()) {
        jconst results = EmulationSession::GetInstance().PerfStats();

        // Converting the structure into an array makes it easier to pass it to the frontend
        double stats[4] = {results.system_fps, results.average_game_fps, results.frametime,
                           results.emulation_speed};

        env->SetDoubleArrayRegion(j_stats, 0, 4, stats);
    }

    return j_stats;
}

jstring Java_org_yuzu_yuzu_1emu_NativeLibrary_getCpuBackend(JNIEnv* env, jclass clazz) {
    if (Settings::IsNceEnabled()) {
        return ToJString(env, "NCE");
    }

    return ToJString(env, "JIT");
}

void Java_org_yuzu_yuzu_1emu_NativeLibrary_applySettings(JNIEnv* env, jobject jobj) {
    EmulationSession::GetInstance().System().ApplySettings();
}

void Java_org_yuzu_yuzu_1emu_NativeLibrary_logSettings(JNIEnv* env, jobject jobj) {
    Settings::LogSettings();
}

void Java_org_yuzu_yuzu_1emu_NativeLibrary_run__Ljava_lang_String_2(JNIEnv* env, jclass clazz,
                                                                    jstring j_path) {
    const std::string path = GetJString(env, j_path);

    const Core::SystemResultStatus result{RunEmulation(path)};
    if (result != Core::SystemResultStatus::Success) {
        env->CallStaticVoidMethod(IDCache::GetNativeLibraryClass(),
                                  IDCache::GetExitEmulationActivity(), static_cast<int>(result));
    }
}

void Java_org_yuzu_yuzu_1emu_NativeLibrary_logDeviceInfo(JNIEnv* env, jclass clazz) {
    LOG_INFO(Frontend, "yuzu Version: {}-{}", Common::g_scm_branch, Common::g_scm_desc);
    LOG_INFO(Frontend, "Host OS: Android API level {}", android_get_device_api_level());
}

void Java_org_yuzu_yuzu_1emu_NativeLibrary_submitInlineKeyboardText(JNIEnv* env, jclass clazz,
                                                                    jstring j_text) {
    const std::u16string input = Common::UTF8ToUTF16(GetJString(env, j_text));
    EmulationSession::GetInstance().SoftwareKeyboard()->SubmitInlineKeyboardText(input);
}

void Java_org_yuzu_yuzu_1emu_NativeLibrary_submitInlineKeyboardInput(JNIEnv* env, jclass clazz,
                                                                     jint j_key_code) {
    EmulationSession::GetInstance().SoftwareKeyboard()->SubmitInlineKeyboardInput(j_key_code);
}

void Java_org_yuzu_yuzu_1emu_NativeLibrary_initializeEmptyUserDirectory(JNIEnv* env,
                                                                        jobject instance) {
    const auto nand_dir = Common::FS::GetYuzuPath(Common::FS::YuzuPath::NANDDir);
    auto vfs_nand_dir = EmulationSession::GetInstance().System().GetFilesystem()->OpenDirectory(
        Common::FS::PathToUTF8String(nand_dir), FileSys::Mode::Read);

    const auto user_id = EmulationSession::GetInstance().System().GetProfileManager().GetUser(
        static_cast<std::size_t>(0));
    ASSERT(user_id);

    const auto user_save_data_path = FileSys::SaveDataFactory::GetFullPath(
        EmulationSession::GetInstance().System(), vfs_nand_dir, FileSys::SaveDataSpaceId::NandUser,
        FileSys::SaveDataType::SaveData, 1, user_id->AsU128(), 0);

    const auto full_path = Common::FS::ConcatPathSafe(nand_dir, user_save_data_path);
    if (!Common::FS::CreateParentDirs(full_path)) {
        LOG_WARNING(Frontend, "Failed to create full path of the default user's save directory");
    }
}

jstring Java_org_yuzu_yuzu_1emu_NativeLibrary_getAppletLaunchPath(JNIEnv* env, jclass clazz,
                                                                  jlong jid) {
    auto bis_system =
        EmulationSession::GetInstance().System().GetFileSystemController().GetSystemNANDContents();
    if (!bis_system) {
        return ToJString(env, "");
    }

    auto applet_nca =
        bis_system->GetEntry(static_cast<u64>(jid), FileSys::ContentRecordType::Program);
    if (!applet_nca) {
        return ToJString(env, "");
    }

    return ToJString(env, applet_nca->GetFullPath());
}

void Java_org_yuzu_yuzu_1emu_NativeLibrary_setCurrentAppletId(JNIEnv* env, jclass clazz,
                                                              jint jappletId) {
    EmulationSession::GetInstance().System().GetAppletManager().SetCurrentAppletId(
        static_cast<Service::AM::Applets::AppletId>(jappletId));
}

void Java_org_yuzu_yuzu_1emu_NativeLibrary_setCabinetMode(JNIEnv* env, jclass clazz,
                                                          jint jcabinetMode) {
    EmulationSession::GetInstance().System().GetAppletManager().SetCabinetMode(
        static_cast<Service::NFP::CabinetMode>(jcabinetMode));
}

jboolean Java_org_yuzu_yuzu_1emu_NativeLibrary_isFirmwareAvailable(JNIEnv* env, jclass clazz) {
    auto bis_system =
        EmulationSession::GetInstance().System().GetFileSystemController().GetSystemNANDContents();
    if (!bis_system) {
        return false;
    }

    // Query an applet to see if it's available
    auto applet_nca =
        bis_system->GetEntry(0x010000000000100Dull, FileSys::ContentRecordType::Program);
    if (!applet_nca) {
        return false;
    }
    return true;
}

jobjectArray Java_org_yuzu_yuzu_1emu_NativeLibrary_getAddonsForFile(JNIEnv* env, jobject jobj,
                                                                    jstring jpath,
                                                                    jstring jprogramId) {
    const auto path = GetJString(env, jpath);
    const auto vFile =
        Core::GetGameFileFromPath(EmulationSession::GetInstance().System().GetFilesystem(), path);
    if (vFile == nullptr) {
        return nullptr;
    }

    auto& system = EmulationSession::GetInstance().System();
    auto program_id = EmulationSession::GetProgramId(env, jprogramId);
    const FileSys::PatchManager pm{program_id, system.GetFileSystemController(),
                                   system.GetContentProvider()};
    const auto loader = Loader::GetLoader(system, vFile);

    FileSys::VirtualFile update_raw;
    loader->ReadUpdateRaw(update_raw);

    auto addons = pm.GetPatchVersionNames(update_raw);
    auto jemptyString = ToJString(env, "");
    auto jemptyStringPair = env->NewObject(IDCache::GetPairClass(), IDCache::GetPairConstructor(),
                                           jemptyString, jemptyString);
    jobjectArray jaddonsArray =
        env->NewObjectArray(addons.size(), IDCache::GetPairClass(), jemptyStringPair);
    int i = 0;
    for (const auto& addon : addons) {
        jobject jaddon = env->NewObject(IDCache::GetPairClass(), IDCache::GetPairConstructor(),
                                        ToJString(env, addon.first), ToJString(env, addon.second));
        env->SetObjectArrayElement(jaddonsArray, i, jaddon);
        ++i;
    }
    return jaddonsArray;
}

jstring Java_org_yuzu_yuzu_1emu_NativeLibrary_getSavePath(JNIEnv* env, jobject jobj,
                                                          jstring jprogramId) {
    auto program_id = EmulationSession::GetProgramId(env, jprogramId);

    auto& system = EmulationSession::GetInstance().System();

    Service::Account::ProfileManager manager;
    // TODO: Pass in a selected user once we get the relevant UI working
    const auto user_id = manager.GetUser(static_cast<std::size_t>(0));
    ASSERT(user_id);

    const auto nandDir = Common::FS::GetYuzuPath(Common::FS::YuzuPath::NANDDir);
    auto vfsNandDir = system.GetFilesystem()->OpenDirectory(Common::FS::PathToUTF8String(nandDir),
                                                            FileSys::Mode::Read);

    const auto user_save_data_path = FileSys::SaveDataFactory::GetFullPath(
        system, vfsNandDir, FileSys::SaveDataSpaceId::NandUser, FileSys::SaveDataType::SaveData,
        program_id, user_id->AsU128(), 0);
    return ToJString(env, user_save_data_path);
}

void Java_org_yuzu_yuzu_1emu_NativeLibrary_addFileToFilesystemProvider(JNIEnv* env, jobject jobj,
                                                                       jstring jpath) {
    EmulationSession::GetInstance().ConfigureFilesystemProvider(GetJString(env, jpath));
}

void Java_org_yuzu_yuzu_1emu_NativeLibrary_clearFilesystemProvider(JNIEnv* env, jobject jobj) {
    EmulationSession::GetInstance().GetContentProvider()->ClearAllEntries();
}

} // extern "C"
