#include "Memory.hpp";
#include "Maths.hpp";
#include "ObfuscateString.h"
#include <string>
#include <spdlog/spdlog.h>
#include <spdlog/sinks/rotating_file_sink.h>
#include <filesystem>


// Constants
const std::string PLUGIN_NAME = "WuchangFF";
const std::string PLUGIN_LOG = PLUGIN_NAME + ".log";
const std::string gameExecutable = "Project_Plague-Win64-Shipping.exe";

// Logger
std::shared_ptr<spdlog::logger> logger;

// Plugin states
static bool AOBScanDone = false;
static bool g_fix_enabled = false;
static bool g_aspect_ratio_axis_constrain_fix_enabled = false;
static bool g_DOF_fix_enabled = false;
static bool g_Vignetting_fix_enabled = false;
static bool g_Fog_fix_enabled = false;

// AOB Scan pointers
static uint8_t* HORPLUSaddress = nullptr;
static uint8_t* DOFaddress = nullptr;
static uint8_t* Vignettingaddress = nullptr;
static uint8_t* Fogaddress = nullptr;

// Prototypes 
static void HORPlusFixEnabled(bool fix_enabled);
static void DOFFixEnabled(bool fix_enabled);
static void VignettingFixEnabled(bool fix_enabled);
static void FogFixEnabled(bool fix_enabled);

extern "C" __declspec(dllexport) void SetFixEnabled(bool enabled)
{
    g_fix_enabled = enabled;
    if (g_fix_enabled && !AOBScanDone) {
        logger->info("--------------- AOB scan started ---------------");
        if (FOVaddress == nullptr) {            
            constexpr auto FOVStringObfuscated = make_obfuscated<0x4A>("EB ?? F3 0F ?? ?? ?? ?? ?? ?? F3 0F ?? ?? ?? 0F ?? ?? 8B");
            FOVaddress = Memory::AOBScan(gameExecutable, FOVStringObfuscated.decrypt(), PAGE_EXECUTE_READ);
            //"Project_Plague-Win64-Shipping.exe" + 3E1037A - EB 08                   - jmp "Project_Plague-Win64-Shipping.exe" + 3E10384
            //"Project_Plague-Win64-Shipping.exe" + 3E1037C - F3 0F 10 83 E0 02 00 00 - movss xmm0, [rbx + 000002E0]
            //"Project_Plague-Win64-Shipping.exe" + 3E10384 - F3 0F 11 47 30          - movss[rdi + 30], xmm0
            //"Project_Plague-Win64-Shipping.exe" + 3E10389 - 0F 57 C0                - xorps xmm0, xmm0
            //"Project_Plague-Win64-Shipping.exe" + 3E1038C - 8B 83 F0 02 00 00       - mov eax, [rbx + 000002F0]

            if (!FOVaddress)
                logger->warn("FOV signature not found. Maybe your game has been updated and is no more compatible with this plugin.");
            else {
                logger->info("FOV signature found at address: 0x{:X}.", reinterpret_cast<uintptr_t>(FOVaddress));
                FOVaddress += 0xa; // Offset for the target opcode
            }
        }

        if (Aspectaddress_1 == nullptr) {
            constexpr auto AspectStringObfuscated = make_obfuscated<0x4A>("C3 CC CC CC CC CC CC CC CC 48 89 ?? ?? ?? 57 48 ?? ?? ?? 0F ?? ?? 48 ?? ?? 48 ?? ?? 0F ?? ?? ?? 0F ?? ?? ?? F2 0F");
            Aspectaddress_1 = Memory::AOBScan(gameExecutable, AspectStringObfuscated.decrypt(), PAGE_EXECUTE_READ);
            //"Project_Plague-Win64-Shipping.exe" + 10A7443 - 89 41 44 - mov[rcx + 44], eax
            //"Project_Plague-Win64-Shipping.exe" + 10A7446 - 8B 42 48 - mov eax, [rdx + 48]
            //"Project_Plague-Win64-Shipping.exe" + 10A7449 - 89 41 48 - mov[rcx + 48], eax
            //"Project_Plague-Win64-Shipping.exe" + 10A744C - 8B 49 4C - mov ecx, [rcx + 4C]
            //"Project_Plague-Win64-Shipping.exe" + 10A744F - 33 4A 4C - xor ecx, [rdx + 4C]

            if (!Aspectaddress_1)
                logger->warn("Aspect ratio #1 signature not found. Maybe your game has been updated and is no more compatible with this plugin.");
            else {
                logger->info("Aspect ratio #1 signature found at address: 0x{:X}.", reinterpret_cast<uintptr_t>(Aspectaddress_1));
                Aspectaddress_1 += 0x62;
            }
        }

        if (Aspectaddress_2 == nullptr) {
            constexpr auto AspectStringObfuscated = make_obfuscated<0x4A>("C3 CC CC CC CC CC 48 89 ?? ?? ?? 57 48 ?? ?? ?? 0F ?? ?? 48 ?? ?? 48 ?? ?? 0F ?? ?? ?? 0F ?? ?? ?? F2 0F");
            Aspectaddress_2 = Memory::AOBScan(gameExecutable, AspectStringObfuscated.decrypt(), PAGE_EXECUTE_READ);
            //"Project_Plague-Win64-Shipping.exe" + 1914483 - 89 41 44 - mov[rcx + 44], eax
            //"Project_Plague-Win64-Shipping.exe" + 1914486 - 8B 42 48 - mov eax, [rdx + 48]
            //"Project_Plague-Win64-Shipping.exe" + 1914489 - 89 41 48 - mov[rcx + 48], eax
            //"Project_Plague-Win64-Shipping.exe" + 191448C - 8B 49 4C - mov ecx, [rcx + 4C]
            //"Project_Plague-Win64-Shipping.exe" + 191448F - 33 4A 4C - xor ecx, [rdx + 4C]

            if (!Aspectaddress_2)
                logger->warn("Aspect ratio #2 signature not found. Maybe your game has been updated and is no more compatible with this plugin.");
            else {
                logger->info("Aspect ratio #2 signature found at address: 0x{:X}.", reinterpret_cast<uintptr_t>(Aspectaddress_2));
                Aspectaddress_2 += 0x5F;
            }
        }

        if (DOFaddress == nullptr) {
            constexpr auto DOFStringObfuscated = make_obfuscated<0x4A>("48 ?? ?? 8B ?? ?? E8 ?? ?? ?? ?? 48 ?? ?? 48 6B ?? ?? 48 8D");
            DOFaddress = Memory::AOBScan(gameExecutable, DOFStringObfuscated.decrypt(), PAGE_EXECUTE_READ);
            //"Project_Plague-Win64-Shipping.exe" + 2BD06A4 - 48 8B 05 1D 15 9D 05 - mov rax, ["Project_Plague-Win64-Shipping.exe" + 85A1BC8]
            //"Project_Plague-Win64-Shipping.exe" + 2BD06AB - 48 8B CB             - mov rcx, rbx
            //"Project_Plague-Win64-Shipping.exe" + 2BD06AE - 8B 78 04             - mov edi, [rax + 04]
            //"Project_Plague-Win64-Shipping.exe" + 2BD06B1 - E8 AA 5F 8A 01       - call "Project_Plague-Win64-Shipping.exe" + 4476660
            //"Project_Plague-Win64-Shipping.exe" + 2BD06B6 - 48 63 C8             - movsxd  rcx, eax

            if (!DOFaddress)
                logger->warn("DOF signature not found. Maybe your game has been updated and is no more compatible with this plugin.");
            else {
                logger->info("DOF signature found at address: 0x{:X}.", reinterpret_cast<uintptr_t>(DOFaddress));
                DOFaddress += 0x3;
            }
        }

        if (Vignettingaddress == nullptr) {
            constexpr auto VignettingStringObfuscated = make_obfuscated<0x4A>("8B ?? 83 ?? ?? 7D ?? 89 B3 ?? ?? ?? ?? EB");
            Vignettingaddress = Memory::AOBScan(gameExecutable, VignettingStringObfuscated.decrypt(), PAGE_EXECUTE_READ);
            //"Project_Plague-Win64-Shipping.exe" + 4474088 - C7 83 B0 1F 00 00 00 00 80 3F - mov[rbx + 00001FB0], 3F800000
            //"Project_Plague-Win64-Shipping.exe" + 4474092 - 48 8B 05 87 FE 1F 04          - mov rax, ["Project_Plague-Win64-Shipping.exe" + 8673F20]
            //"Project_Plague-Win64-Shipping.exe" + 4474099 - 8B 08                         - mov ecx, [rax]
            //"Project_Plague-Win64-Shipping.exe" + 447409B - 83 F9 02                      - cmp ecx, 02
            //"Project_Plague-Win64-Shipping.exe" + 447409E - 7D 08                         - jnl "Project_Plague-Win64-Shipping.exe" + 44740A8

            if (!Vignettingaddress)
                logger->warn("Vignetting signature not found. Maybe your game has been updated and is no more compatible with this plugin.");
            else {
                logger->info("Vignetting signature found at address: 0x{:X}.", reinterpret_cast<uintptr_t>(Vignettingaddress));
            }
        }

        if (Fogaddress == nullptr) {
            constexpr auto FogStringObfuscated = make_obfuscated<0x4A>("75 ?? B3 ?? EB ?? 32 ?? 48 8B ?? ?? ?? 48 ?? ?? 74 ?? E8 ?? ?? ?? ?? 0F ?? ?? 48 8B");
            Fogaddress = Memory::AOBScan(gameExecutable, FogStringObfuscated.decrypt(), PAGE_EXECUTE_READ);
            //"Project_Plague-Win64-Shipping.exe" + 28E27FD - 48 8B 05 54 9A C6 05 - mov rax, ["Project_Plague-Win64-Shipping.exe" + 854C258]
            //"Project_Plague-Win64-Shipping.exe" + 28E2804 - 83 78 04 01          - cmp dword ptr[rax + 04], 01
            //"Project_Plague-Win64-Shipping.exe" + 28E2808 - 75 04                - jne "Project_Plague-Win64-Shipping.exe" + 28E280E
            //"Project_Plague-Win64-Shipping.exe" + 28E280A - B3 01                - mov bl, 01
            //"Project_Plague-Win64-Shipping.exe" + 28E280C - EB 02                - jmp "Project_Plague-Win64-Shipping.exe" + 28E2810

            if (!Fogaddress)
                logger->warn("Fog signature not found. Maybe your game has been updated and is no more compatible with this plugin.");
            else {
                logger->info("Fog signature found at address: 0x{:X}.", reinterpret_cast<uintptr_t>(Fogaddress));
            }            
        }

        if (HORPLUSaddress && DOFaddress && Vignettingaddress && Fogaddress) {
            logger->info("All AOB signatures found. Ready to patch...");
            AOBScanDone = true;
        }

        logger->info("--------------- AOB scan finished ---------------");
    }
    if (g_fix_enabled) {
        if (HORPLUSaddress) HORPlusFixEnabled(g_aspect_ratio_axis_constrain_fix_enabled);
        if (DOFaddress) DOFFixEnabled(g_DOF_fix_enabled);
        if (Vignettingaddress) VignettingFixEnabled(g_Vignetting_fix_enabled);
        if (Fogaddress) FogFixEnabled(g_Fog_fix_enabled);
    }
    else {
        if (HORPLUSaddress) HORPlusFixEnabled(false);
        if (DOFaddress) DOFFixEnabled(false);
        if (Vignettingaddress) VignettingFixEnabled(false);
        if (Fogaddress) FogFixEnabled(false);
        logger->info("All fixes disabled.");
    }
}

// Setters for Reshade addon call
extern "C" __declspec(dllexport) void SetARAxisConstrainFixEnabled(bool enabled, bool init)
{
    g_aspect_ratio_axis_constrain_fix_enabled = enabled;
    if (!init) HORPlusFixEnabled(g_aspect_ratio_axis_constrain_fix_enabled);
}

extern "C" __declspec(dllexport) void SetDOFFixEnabled(bool enabled, bool init)
{
    g_DOF_fix_enabled = enabled;
    if (!init) DOFFixEnabled(g_DOF_fix_enabled);
}

extern "C" __declspec(dllexport) void SetVignettingFixEnabled(bool enabled, bool init)
{
    g_Vignetting_fix_enabled = enabled;
    if (!init) VignettingFixEnabled(g_Vignetting_fix_enabled);
}

extern "C" __declspec(dllexport) void SetFogFixEnabled(bool enabled, bool init)
{
    g_Fog_fix_enabled = enabled;
    if (!init) FogFixEnabled(g_Fog_fix_enabled);
}

// Memory patch fixes
static void HORPlusFixEnabled(bool fix_enabled) {
    if (g_fix_enabled && fix_enabled && HORPLUSaddress) {
        Memory::PatchBytes(HORPLUSaddress, "\x31\xD2\x90\x90\x90\x90\x90\x90", 8); // xor edx,edx AspectRatioAxisConstraint=AspectRatio_MaintainYFOV
        logger->info("HOR+ fix enabled");
    }
    if (!fix_enabled && HORPLUSaddress) {
        Memory::RestoreBytes(HORPLUSaddress);
        logger->info("HOR+ fix disabled");
    }
}

static void DOFFixEnabled(bool fix_enabled) {
    if (g_fix_enabled && fix_enabled && DOFaddress) {
        Memory::PatchBytes(DOFaddress, "\x31\xFF\x90", 3); // xor edi,edi r.DepthOfFieldQuality = 0
        logger->info("Depth of field fix enabled");
    }
    if (!fix_enabled && DOFaddress) {
        Memory::RestoreBytes(DOFaddress);
        logger->info("Depth of field fix disabled");
    }
}

static void VignettingFixEnabled(bool fix_enabled) {
    if (g_fix_enabled && fix_enabled && Vignettingaddress) {
        Memory::PatchBytes(Vignettingaddress, "\x31\xC9", 2); // xor ecx,ecx r.Tonemapper.Quality=0
        logger->info("Vignetting fix enabled");
    }
    if (!fix_enabled && Vignettingaddress) {
        Memory::RestoreBytes(Vignettingaddress);
        logger->info("Vignetting fix disabled");
    }
}

static void FogFixEnabled(bool fix_enabled) {
    if (g_fix_enabled && fix_enabled && Fogaddress) {
        Memory::PatchBytes(Fogaddress, "\xEB", 1); // jmp "Project_Plague-Win64-Shipping.exe"+28E280E
        logger->info("Fog fix enabled");
    }
    if (!fix_enabled && Fogaddress) {
        Memory::RestoreBytes(Fogaddress);
        logger->info("Fog fix disabled");
    }
}

static void InitializeLogger()
{
    try
    {
        std::filesystem::path log_path = std::filesystem::absolute(PLUGIN_LOG);
        if (std::filesystem::exists(log_path))
            std::filesystem::remove(log_path);
        logger = std::make_shared<spdlog::logger>("Wuchang Fallen Feathers", std::make_shared<spdlog::sinks::rotating_file_sink_st>(PLUGIN_LOG, 10 * 1024 * 1024, 1));
        logger->flush_on(spdlog::level::debug); // Flush automatically
    }
    catch (const spdlog::spdlog_ex& ex)
    {
        std::string plugin_error_message = "Could not open " + PLUGIN_LOG;
        MessageBoxA(nullptr, plugin_error_message.c_str(), "Logger Error", MB_ICONERROR | MB_OK);
    }
}

// Standard dll entry
BOOL APIENTRY DllMain(HMODULE hModule, DWORD reason, LPVOID)
{
    if (reason == DLL_PROCESS_ATTACH)
    {
        InitializeLogger();
        logger->info("Plugin {} loaded.", PLUGIN_NAME);
    }
    else if (reason == DLL_PROCESS_DETACH)
    {
        logger->info("Plugin {} unloaded.", PLUGIN_NAME);
        spdlog::drop_all();
    }
    return TRUE;
}