#include <hex/api/content_registry.hpp>
#include <hex/api/imhex_api.hpp>

#include <hex/helpers/http_requests.hpp>
#include <hex/helpers/utils.hpp>
#include <hex/helpers/fmt.hpp>
#include <hex/helpers/literals.hpp>
#include <hex/helpers/fs.hpp>
#include <hex/api/localization.hpp>

#include <hex/ui/view.hpp>

#include <algorithm>
#include <chrono>
#include <random>
#include <regex>

#include <llvm/Demangle/Demangle.h>
#include <content/helpers/math_evaluator.hpp>

#include <imgui.h>
#include <implot.h>

#include <hex/ui/imgui_imhex_extensions.h>
#include <content/popups/popup_notification.hpp>
#include <nlohmann/json.hpp>

#include <wolv/io/file.hpp>
#include <wolv/utils/guards.hpp>
#include <wolv/net/socket_client.hpp>
#include <wolv/net/socket_server.hpp>

namespace hex::plugin::builtin {

    namespace {

        using namespace std::literals::string_literals;
        using namespace std::literals::chrono_literals;
        using namespace hex::literals;

        void drawDemangler() {
            static std::string mangledName, demangledName;

            if (ImGui::InputTextWithHint("hex.builtin.tools.demangler.mangled"_lang, "Itanium, MSVC, Dlang & Rust", mangledName)) {
                demangledName = llvm::demangle(mangledName);

                if (demangledName == mangledName) {
                    demangledName = "???";
                }
            }

            ImGui::Header("hex.builtin.tools.demangler.demangled"_lang);
            if (ImGui::BeginChild("demangled", ImVec2(0, 200_scaled), true)) {
                ImGui::TextFormattedWrappedSelectable("{}", demangledName);
            }
            ImGui::EndChild();
        }

        void drawASCIITable() {
            static bool asciiTableShowOctal = false;

            ImGui::BeginTable("##asciitable", 4);
            ImGui::TableSetupColumn("");
            ImGui::TableSetupColumn("");
            ImGui::TableSetupColumn("");
            ImGui::TableSetupColumn("");

            ImGui::TableNextColumn();

            for (u8 tablePart = 0; tablePart < 4; tablePart++) {
                ImGui::BeginTable("##asciitablepart", asciiTableShowOctal ? 4 : 3, ImGuiTableFlags_BordersInnerV | ImGuiTableFlags_BordersOuter | ImGuiTableFlags_RowBg);
                ImGui::TableSetupColumn("dec");
                if (asciiTableShowOctal)
                    ImGui::TableSetupColumn("oct");
                ImGui::TableSetupColumn("hex");
                ImGui::TableSetupColumn("char");

                ImGui::TableHeadersRow();

                for (u8 i = 0; i < 0x80 / 4; i++) {
                    ImGui::TableNextRow();

                    ImGui::TableNextColumn();
                    ImGui::TextFormatted("{0:03d}", i + 32 * tablePart);

                    if (asciiTableShowOctal) {
                        ImGui::TableNextColumn();
                        ImGui::TextFormatted("0o{0:03o}", i + 32 * tablePart);
                    }

                    ImGui::TableNextColumn();
                    ImGui::TextFormatted("0x{0:02X}", i + 32 * tablePart);

                    ImGui::TableNextColumn();
                    ImGui::TextFormatted("{0}", hex::makePrintable(i + 32 * tablePart));
                }

                ImGui::EndTable();
                ImGui::TableNextColumn();
            }
            ImGui::EndTable();

            ImGui::Checkbox("hex.builtin.tools.ascii_table.octal"_lang, &asciiTableShowOctal);
        }

        void drawRegexReplacer() {
            static auto regexInput     = [] { std::string s; s.reserve(0xFFF); return s; }();
            static auto regexPattern   = [] { std::string s; s.reserve(0xFFF); return s; }();
            static auto replacePattern = [] { std::string s; s.reserve(0xFFF); return s; }();
            static auto regexOutput    = [] { std::string s; s.reserve(0xFFF); return s; }();

            ImGui::PushItemWidth(-150_scaled);
            bool changed1 = ImGui::InputTextIcon("hex.builtin.tools.regex_replacer.pattern"_lang, ICON_VS_REGEX, regexPattern);
            bool changed2 = ImGui::InputTextIcon("hex.builtin.tools.regex_replacer.replace"_lang, ICON_VS_REGEX, replacePattern);
            bool changed3 = ImGui::InputTextMultiline("hex.builtin.tools.regex_replacer.input"_lang, regexInput, ImVec2(0, 0));

            if (changed1 || changed2 || changed3) {
                try {
                    regexOutput = std::regex_replace(regexInput.data(), std::regex(regexPattern.data()), replacePattern.data());
                } catch (std::regex_error &) { }
            }

            ImGui::InputTextMultiline("hex.builtin.tools.regex_replacer.output"_lang, regexOutput.data(), regexOutput.size(), ImVec2(0, 0), ImGuiInputTextFlags_ReadOnly);

            ImGui::PopItemWidth();
        }

        void drawColorPicker() {
            static std::array<float, 4> pickedColor = { 0 };
            static std::string rgba8;

            struct BitValue {
                int   bits;
                float color;
                float saturationMultiplier;
                char  name;
                u8    index;
            };

            static std::array bitValues = {
                BitValue{ 8, 0.00F, 1.0F, 'R', 0 },
                BitValue{ 8, 0.33F, 1.0F, 'G', 1 },
                BitValue{ 8, 0.66F, 1.0F, 'B', 2 },
                BitValue{ 8, 0.00F, 0.0F, 'A', 3 }
            };

            if (ImGui::BeginTable("##color_picker_table", 3, ImGuiTableFlags_BordersInnerV)) {
                ImGui::TableSetupColumn(" Color Picker", ImGuiTableColumnFlags_WidthFixed | ImGuiTableColumnFlags_NoResize, 300_scaled);
                ImGui::TableSetupColumn(" Components", ImGuiTableColumnFlags_WidthFixed | ImGuiTableColumnFlags_NoResize, 105_scaled);
                ImGui::TableSetupColumn(" Formats", ImGuiTableColumnFlags_WidthStretch | ImGuiTableColumnFlags_NoResize);

                ImGui::TableHeadersRow();

                ImGui::TableNextRow();
                ImGui::TableNextColumn();

                // Draw main color picker widget
                ImVec2 startCursor, endCursor;
                {
                    ImGui::PushItemWidth(-1);
                    startCursor = ImGui::GetCursorPos();
                    ImGui::ColorPicker4("hex.builtin.tools.color"_lang, pickedColor.data(), ImGuiColorEditFlags_Uint8 | ImGuiColorEditFlags_AlphaBar | ImGuiColorEditFlags_NoSidePreview | ImGuiColorEditFlags_NoSmallPreview | ImGuiColorEditFlags_DisplayRGB | ImGuiColorEditFlags_DisplayHSV | ImGuiColorEditFlags_DisplayHex);
                    endCursor = ImGui::GetCursorPos();
                    ImGui::ColorButton("##color_button", ImColor(pickedColor[0], pickedColor[1], pickedColor[2], pickedColor[3]), ImGuiColorEditFlags_NoPicker | ImGuiColorEditFlags_NoDragDrop | ImGuiColorEditFlags_AlphaPreviewHalf, ImVec2(300_scaled, 0));
                    ImGui::PopItemWidth();
                }

                ImGui::TableNextColumn();

                const auto colorName = hex::format("{}{}{}{}", bitValues[0].name, bitValues[1].name, bitValues[2].name, bitValues[3].name);

                // Draw color bit count sliders
                {
                    ImGui::Indent();

                    static auto drawBitsSlider = [&](BitValue *bitValue) {
                        // Change slider color
                        ImGui::PushStyleColor(ImGuiCol_FrameBg,         ImColor::HSV(bitValue->color, 0.5f * bitValue->saturationMultiplier, 0.5f).Value);
                        ImGui::PushStyleColor(ImGuiCol_FrameBgHovered,  ImColor::HSV(bitValue->color, 0.6f * bitValue->saturationMultiplier, 0.5f).Value);
                        ImGui::PushStyleColor(ImGuiCol_FrameBgActive,   ImColor::HSV(bitValue->color, 0.7f * bitValue->saturationMultiplier, 0.5f).Value);
                        ImGui::PushStyleColor(ImGuiCol_SliderGrab,      ImColor::HSV(bitValue->color, 0.9f * bitValue->saturationMultiplier, 0.9f).Value);

                        // Draw slider
                        ImGui::PushID(&bitValue->bits);
                        auto format = hex::format("%d\n{}", bitValue->name);
                        ImGui::VSliderInt("##slider", ImVec2(18_scaled, (endCursor - startCursor).y - 3_scaled), &bitValue->bits, 0, 16, format.c_str(), ImGuiSliderFlags_AlwaysClamp);
                        ImGui::PopID();

                        ImGui::PopStyleColor(4);
                    };

                    // Force sliders closer together
                    ImGui::PushStyleVar(ImGuiStyleVar_ItemSpacing, ImVec2(4, 4));

                    // Draw a slider for each color component
                    for (u32 index = 0; auto &bitValue : bitValues) {
                        // Draw slider
                        drawBitsSlider(&bitValue);

                        // Configure drag and drop source and target
                        if (ImGui::BeginDragDropSource(ImGuiDragDropFlags_None)) {
                            // Set the current slider index as the payload
                            ImGui::SetDragDropPayload("BIT_VALUE", &index, sizeof(u32));

                            // Draw a color button to show the color being dragged
                            ImGui::ColorButton("##color_button", ImColor::HSV(bitValue.color, 0.5f * bitValue.saturationMultiplier, 0.5f).Value);

                            ImGui::EndDragDropSource();
                        }
                        if (ImGui::BeginDragDropTarget()) {
                            if (const ImGuiPayload *payload = ImGui::AcceptDragDropPayload("BIT_VALUE"); payload != nullptr) {
                                auto otherIndex = *static_cast<const u32 *>(payload->Data);

                                // Swap the currently hovered slider with the one being dragged
                                std::swap(bitValues[index], bitValues[otherIndex]);
                            }
                            ImGui::EndDragDropTarget();
                        }

                        ImGui::SameLine();

                        index += 1;
                    }

                    ImGui::NewLine();

                    // Draw color name below sliders
                    ImGui::TextFormatted("{}", colorName);

                    ImGui::PopStyleVar();

                    ImGui::Unindent();
                }

                ImGui::TableNextColumn();

                // Draw encoded color values
                {
                    // Calculate int and float representations of the selected color
                    std::array<u32, 4> intColor = {};
                    std::array<float, 4> floatColor = {};
                    for (u32 index = 0; auto &bitValue : bitValues) {
                        intColor[index] = u64(std::round(static_cast<long double>(pickedColor[bitValue.index]) * std::numeric_limits<u32>::max())) >> (32 - bitValue.bits);
                        floatColor[index] = pickedColor[bitValue.index];

                        index += 1;
                    }

                    // Draw a table with the color values
                    if (ImGui::BeginTable("##value_table", 2, ImGuiTableFlags_Borders | ImGuiTableFlags_RowBg | ImGuiTableFlags_NoHostExtendX , ImVec2(0, 0))) {
                        ImGui::TableSetupColumn("name",  ImGuiTableColumnFlags_WidthFixed);
                        ImGui::TableSetupColumn("value", ImGuiTableColumnFlags_WidthStretch);

                        const static auto drawValue = [](const char *name, auto formatter) {
                            ImGui::TableNextRow();
                            ImGui::TableNextColumn();

                            // Draw name of the formatting
                            ImGui::TextUnformatted(name);

                            ImGui::TableNextColumn();

                            // Draw value
                            ImGui::PushID(name);
                            ImGui::TextFormattedSelectable("{}", formatter());
                            ImGui::PopID();
                        };

                        const u32 bitCount = bitValues[0].bits + bitValues[1].bits + bitValues[2].bits + bitValues[3].bits;

                        // Draw the different representations

                        drawValue("HEX", [&] {
                            u64 hexValue = 0;
                            for (u32 index = 0; auto &bitValue : bitValues) {
                                hexValue <<= bitValue.bits;
                                hexValue |= u64(intColor[index]) & hex::bitmask(bitValue.bits);
                                index += 1;
                            }

                            return hex::format("#{0:0{1}X}", hexValue, bitCount / 4);
                        });

                        drawValue(colorName.c_str(), [&] {
                            return hex::format("{}({}, {}, {}, {})", colorName, intColor[0], intColor[1], intColor[2], intColor[3]);
                        });

                        drawValue("Vector4f", [&] {
                            return hex::format("{{ {:.2}F, {:.2}F, {:.2}F, {:.2}F }}", floatColor[0], floatColor[1], floatColor[2], floatColor[3]);
                        });

                        drawValue("Percentage", [&] {
                            return hex::format("{{ {}%, {}%, {}%, {}% }}", u32(floatColor[0] * 100), u32(floatColor[1] * 100), u32(floatColor[2] * 100), u32(floatColor[3] * 100));
                        });

                        ImGui::EndTable();
                    }
                }

                ImGui::EndTable();
            }
        }

        void drawMathEvaluator() {
            static std::vector<long double> mathHistory;
            static std::string lastMathError;
            static std::string mathInput;
            bool evaluate = false;

            static MathEvaluator<long double> mathEvaluator = [&] {
                MathEvaluator<long double> evaluator;

                evaluator.registerStandardVariables();
                evaluator.registerStandardFunctions();

                evaluator.setFunction(
                    "clear", [&](auto args) -> std::optional<long double> {
                        hex::unused(args);

                        mathHistory.clear();
                        lastMathError.clear();
                        mathEvaluator.getVariables().clear();
                        mathEvaluator.registerStandardVariables();
                        mathInput.clear();

                        return std::nullopt;
                    },
                    0,
                    0);

                evaluator.setFunction(
                    "read", [](auto args) -> std::optional<long double> {
                        u8 value = 0;

                        auto provider = ImHexApi::Provider::get();
                        if (!ImHexApi::Provider::isValid() || !provider->isReadable() || args[0] >= provider->getActualSize())
                            return std::nullopt;

                        provider->read(args[0], &value, sizeof(u8));

                        return value;
                    },
                    1,
                    1);

                evaluator.setFunction(
                    "write", [](auto args) -> std::optional<long double> {
                        auto provider = ImHexApi::Provider::get();
                        if (!ImHexApi::Provider::isValid() || !provider->isWritable() || args[0] >= provider->getActualSize())
                            return std::nullopt;

                        if (args[1] > 0xFF)
                            return std::nullopt;

                        u8 value = args[1];
                        provider->write(args[0], &value, sizeof(u8));

                        return std::nullopt;
                    },
                    2,
                    2);

                return evaluator;
            }();

            enum class MathDisplayType : u8 {
                Standard,
                Scientific,
                Engineering,
                Programmer
            } mathDisplayType = MathDisplayType::Standard;

            if (ImGui::BeginTabBar("##mathFormatTabBar")) {
                if (ImGui::BeginTabItem("hex.builtin.tools.format.standard"_lang)) {
                    mathDisplayType = MathDisplayType::Standard;
                    ImGui::EndTabItem();
                }
                if (ImGui::BeginTabItem("hex.builtin.tools.format.scientific"_lang)) {
                    mathDisplayType = MathDisplayType::Scientific;
                    ImGui::EndTabItem();
                }
                if (ImGui::BeginTabItem("hex.builtin.tools.format.engineering"_lang)) {
                    mathDisplayType = MathDisplayType::Engineering;
                    ImGui::EndTabItem();
                }
                if (ImGui::BeginTabItem("hex.builtin.tools.format.programmer"_lang)) {
                    mathDisplayType = MathDisplayType::Programmer;
                    ImGui::EndTabItem();
                }

                ImGui::EndTabBar();
            }

            if (ImGui::BeginTable("##mathWrapper", 3)) {
                ImGui::TableSetupColumn("##keypad", ImGuiTableColumnFlags_WidthFixed | ImGuiTableColumnFlags_NoResize);
                ImGui::TableSetupColumn("##results", ImGuiTableColumnFlags_WidthStretch, 0.666);
                ImGui::TableSetupColumn("##variables", ImGuiTableColumnFlags_WidthStretch, 0.666);

                ImGui::TableNextRow();
                ImGui::TableNextColumn();

                auto buttonSize = ImVec2(3, 2) * ImGui::GetTextLineHeightWithSpacing();

                if (ImGui::Button("Ans", buttonSize)) mathInput += "ans";
                ImGui::SameLine();
                if (ImGui::Button("Pi", buttonSize)) mathInput += "pi";
                ImGui::SameLine();
                if (ImGui::Button("e", buttonSize)) mathInput += "e";
                ImGui::SameLine();
                if (ImGui::Button("CE", buttonSize)) mathInput.clear();
                ImGui::SameLine();
                if (ImGui::Button(ICON_FA_BACKSPACE, buttonSize)) mathInput.clear();

                ImGui::SameLine();
                ImGui::NewLine();

                switch (mathDisplayType) {
                    case MathDisplayType::Standard:
                    case MathDisplayType::Scientific:
                    case MathDisplayType::Engineering:
                        if (ImGui::Button("x²", buttonSize)) mathInput += "** 2";
                        ImGui::SameLine();
                        if (ImGui::Button("1/x", buttonSize)) mathInput += "1/";
                        ImGui::SameLine();
                        if (ImGui::Button("|x|", buttonSize)) mathInput += "abs";
                        ImGui::SameLine();
                        if (ImGui::Button("exp", buttonSize)) mathInput += "e ** ";
                        ImGui::SameLine();
                        if (ImGui::Button("%", buttonSize)) mathInput += "%";
                        ImGui::SameLine();
                        break;
                    case MathDisplayType::Programmer:
                        if (ImGui::Button("<<", buttonSize)) mathInput += "<<";
                        ImGui::SameLine();
                        if (ImGui::Button(">>", buttonSize)) mathInput += ">>";
                        ImGui::SameLine();
                        if (ImGui::Button("&", buttonSize)) mathInput += "&";
                        ImGui::SameLine();
                        if (ImGui::Button("|", buttonSize)) mathInput += "|";
                        ImGui::SameLine();
                        if (ImGui::Button("^", buttonSize)) mathInput += "^";
                        ImGui::SameLine();
                        break;
                }
                ImGui::NewLine();
                if (ImGui::Button("sqrt", buttonSize)) mathInput += "sqrt";
                ImGui::SameLine();
                if (ImGui::Button("(", buttonSize)) mathInput += "(";
                ImGui::SameLine();
                if (ImGui::Button(")", buttonSize)) mathInput += ")";
                ImGui::SameLine();
                if (ImGui::Button("sign", buttonSize)) mathInput += "sign";
                ImGui::SameLine();
                if (ImGui::Button("÷", buttonSize)) mathInput += "/";
                ImGui::SameLine();
                ImGui::NewLine();
                if (ImGui::Button("xª", buttonSize)) mathInput += "**";
                ImGui::SameLine();
                if (ImGui::Button("7", buttonSize)) mathInput += "7";
                ImGui::SameLine();
                if (ImGui::Button("8", buttonSize)) mathInput += "8";
                ImGui::SameLine();
                if (ImGui::Button("9", buttonSize)) mathInput += "9";
                ImGui::SameLine();
                if (ImGui::Button("×", buttonSize)) mathInput += "*";
                ImGui::SameLine();
                ImGui::NewLine();
                if (ImGui::Button("log", buttonSize)) mathInput += "log";
                ImGui::SameLine();
                if (ImGui::Button("4", buttonSize)) mathInput += "4";
                ImGui::SameLine();
                if (ImGui::Button("5", buttonSize)) mathInput += "5";
                ImGui::SameLine();
                if (ImGui::Button("6", buttonSize)) mathInput += "6";
                ImGui::SameLine();
                if (ImGui::Button("-", buttonSize)) mathInput += "-";
                ImGui::SameLine();
                ImGui::NewLine();
                if (ImGui::Button("ln", buttonSize)) mathInput += "ln";
                ImGui::SameLine();
                if (ImGui::Button("1", buttonSize)) mathInput += "1";
                ImGui::SameLine();
                if (ImGui::Button("2", buttonSize)) mathInput += "2";
                ImGui::SameLine();
                if (ImGui::Button("3", buttonSize)) mathInput += "3";
                ImGui::SameLine();
                if (ImGui::Button("+", buttonSize)) mathInput += "+";
                ImGui::SameLine();
                ImGui::NewLine();
                if (ImGui::Button("lb", buttonSize)) mathInput += "lb";
                ImGui::SameLine();
                if (ImGui::Button("x=", buttonSize)) mathInput += "=";
                ImGui::SameLine();
                if (ImGui::Button("0", buttonSize)) mathInput += "0";
                ImGui::SameLine();
                if (ImGui::Button(".", buttonSize)) mathInput += ".";
                ImGui::SameLine();

                ImGui::PushStyleColor(ImGuiCol_Button, ImGui::GetCustomColorVec4(ImGuiCustomCol_DescButtonHovered));
                ImGui::PushStyleColor(ImGuiCol_ButtonActive, ImGui::GetCustomColorVec4(ImGuiCustomCol_DescButton));
                ImGui::PushStyleColor(ImGuiCol_ButtonHovered, ImGui::GetCustomColorVec4(ImGuiCustomCol_DescButtonActive));
                if (ImGui::Button("=", buttonSize)) evaluate = true;
                ImGui::SameLine();
                ImGui::PopStyleColor(3);

                ImGui::NewLine();

                ImGui::TableNextColumn();

                if (ImGui::BeginTable("##mathHistory", 1, ImGuiTableFlags_ScrollY | ImGuiTableFlags_Borders | ImGuiTableFlags_RowBg, ImVec2(0, 300))) {
                    ImGui::TableSetupColumn("hex.builtin.tools.history"_lang);
                    ImGui::TableSetupScrollFreeze(0, 1);

                    ImGuiListClipper clipper;
                    clipper.Begin(mathHistory.size());

                    ImGui::TableHeadersRow();
                    while (clipper.Step()) {
                        for (int i = clipper.DisplayStart; i < clipper.DisplayEnd; i++) {
                            if (i == 0)
                                ImGui::PushStyleColor(ImGuiCol_Text, ImU32(ImColor(0xA5, 0x45, 0x45)));

                            ImGui::TableNextRow();
                            ImGui::TableNextColumn();

                            switch (mathDisplayType) {
                                case MathDisplayType::Standard:
                                    ImGui::TextFormatted("{0:.3Lf}", mathHistory[(mathHistory.size() - 1) - i]);
                                    break;
                                case MathDisplayType::Scientific:
                                    ImGui::TextFormatted("{0:.6Lg}", mathHistory[(mathHistory.size() - 1) - i]);
                                    break;
                                case MathDisplayType::Engineering:
                                    ImGui::TextFormatted("{0}", hex::toEngineeringString(mathHistory[(mathHistory.size() - 1) - i]).c_str());
                                    break;
                                case MathDisplayType::Programmer:
                                    ImGui::TextFormatted("0x{0:X} ({1})",
                                        u64(mathHistory[(mathHistory.size() - 1) - i]),
                                        u64(mathHistory[(mathHistory.size() - 1) - i]));
                                    break;
                            }

                            if (i == 0)
                                ImGui::PopStyleColor();
                        }
                    }

                    clipper.End();

                    ImGui::EndTable();
                }

                ImGui::TableNextColumn();
                if (ImGui::BeginTable("##mathVariables", 2, ImGuiTableFlags_ScrollY | ImGuiTableFlags_Borders | ImGuiTableFlags_RowBg, ImVec2(0, 300))) {
                    ImGui::TableSetupColumn("hex.builtin.tools.name"_lang);
                    ImGui::TableSetupColumn("hex.builtin.tools.value"_lang);
                    ImGui::TableSetupScrollFreeze(0, 1);

                    ImGui::TableHeadersRow();
                    for (const auto &[name, variable] : mathEvaluator.getVariables()) {
                        const auto &[value, constant] = variable;

                        if (constant)
                            continue;

                        ImGui::TableNextRow();
                        ImGui::TableNextColumn();
                        ImGui::TextUnformatted(name.c_str());

                        ImGui::TableNextColumn();
                        switch (mathDisplayType) {
                            case MathDisplayType::Standard:
                                ImGui::TextFormatted("{0:.3Lf}", value);
                                break;
                            case MathDisplayType::Scientific:
                                ImGui::TextFormatted("{0:.6Lg}", value);
                                break;
                            case MathDisplayType::Engineering:
                                ImGui::TextFormatted("{}", hex::toEngineeringString(value));
                                break;
                            case MathDisplayType::Programmer:
                                ImGui::TextFormatted("0x{0:X} ({1})", u64(value), u64(value));
                                break;
                        }
                    }

                    ImGui::EndTable();
                }

                ImGui::EndTable();
            }

            ImGui::PushItemWidth(ImGui::GetContentRegionAvail().x);
            if (ImGui::InputTextIcon("##input", ICON_VS_SYMBOL_OPERATOR, mathInput, ImGuiInputTextFlags_EnterReturnsTrue | ImGuiInputTextFlags_AutoSelectAll)) {
                ImGui::SetKeyboardFocusHere();
                evaluate = true;
            }
            ImGui::PopItemWidth();

            if (!lastMathError.empty())
                ImGui::TextFormattedColored(ImColor(0xA00040FF), "hex.builtin.tools.error"_lang, lastMathError);
            else
                ImGui::NewLine();

            if (evaluate) {
                try {
                    auto result = mathEvaluator.evaluate(mathInput);
                    mathInput.clear();
                    if (result.has_value()) {
                        mathHistory.push_back(result.value());
                        lastMathError.clear();
                    }
                } catch (std::invalid_argument &e) {
                    lastMathError = e.what();
                }
            }
        }

        void drawGraphingCalculator() {
            static std::array<long double, 1000> x, y;
            static std::string mathInput;
            static ImPlotRect limits;
            static double prevPos = 0;
            static long double stepSize = 0.1;

            if (ImPlot::BeginPlot("Function", ImVec2(-1, 0), ImPlotFlags_NoTitle | ImPlotFlags_NoMenus | ImPlotFlags_NoBoxSelect | ImPlotFlags_NoMouseText | ImPlotFlags_NoFrame)) {
                ImPlot::SetupAxesLimits(-10, 10, -5, 5, ImPlotCond_Once);

                limits = ImPlot::GetPlotLimits(ImAxis_X1, ImAxis_Y1);

                ImPlot::PlotLine("f(x)", x.data(), y.data(), x.size());
                ImPlot::EndPlot();
            }

            ImGui::PushItemWidth(-1);
            ImGui::InputTextIcon("##graphing_math_input", ICON_VS_SYMBOL_OPERATOR, mathInput, ImGuiInputTextFlags_EnterReturnsTrue | ImGuiInputTextFlags_AutoSelectAll);
            ImGui::PopItemWidth();

            if ((prevPos != limits.X.Min && (ImGui::IsMouseReleased(ImGuiMouseButton_Left) || ImGui::GetIO().MouseWheel != 0)) || (ImGui::IsItemFocused() && ImGui::IsKeyPressed(ImGuiKey_Enter))) {
                MathEvaluator<long double> evaluator;

                y = {};

                u32 i = 0;
                evaluator.setFunction("y", [&](auto args) -> std::optional<long double> {
                    i32 index = i + args[0];
                    if (index < 0 || u32(index) >= y.size())
                        return 0;
                    else
                        return y[index];
                }, 1, 1);

                evaluator.registerStandardVariables();
                evaluator.registerStandardFunctions();

                stepSize = (limits.X.Size()) / x.size();

                for (i = 0; i < x.size(); i++) {
                    evaluator.setVariable("x", limits.X.Min + i * stepSize);
                    x[i] = limits.X.Min + i * stepSize;
                    y[i] = evaluator.evaluate(mathInput).value_or(0);

                    if (y[i] < limits.Y.Min)
                        limits.Y.Min = y[i];
                    if (y[i] > limits.Y.Max)
                        limits.X.Max = y[i];

                }

                limits.X.Max = limits.X.Min + x.size() * stepSize;
                prevPos = limits.X.Min;
            }

        }

        void drawBaseConverter() {
            static std::array<std::string, 4> buffers;

            static auto ConvertBases = [](u8 base) {
                u64 number;

                switch (base) {
                    case 16:
                        number = std::strtoull(buffers[1].c_str(), nullptr, base);
                        break;
                    case 10:
                        number = std::strtoull(buffers[0].c_str(), nullptr, base);
                        break;
                    case 8:
                        number = std::strtoull(buffers[2].c_str(), nullptr, base);
                        break;
                    case 2:
                        number = std::strtoull(buffers[3].c_str(), nullptr, base);
                        break;
                    default:
                        return;
                }

                buffers[0] = std::to_string(number);
                buffers[1] = hex::format("0x{0:X}", number);
                buffers[2]  = hex::format("{0:#o}", number);
                buffers[3]  = hex::toBinaryString(number);
            };

            if (ImGui::InputTextIcon("hex.builtin.tools.base_converter.dec"_lang, ICON_VS_SYMBOL_NUMERIC, buffers[0]))
                ConvertBases(10);

            if (ImGui::InputTextIcon("hex.builtin.tools.base_converter.hex"_lang, ICON_VS_SYMBOL_NUMERIC, buffers[1]))
                ConvertBases(16);

            if (ImGui::InputTextIcon("hex.builtin.tools.base_converter.oct"_lang, ICON_VS_SYMBOL_NUMERIC, buffers[2]))
                ConvertBases(8);

            if (ImGui::InputTextIcon("hex.builtin.tools.base_converter.bin"_lang, ICON_VS_SYMBOL_NUMERIC, buffers[3]))
                ConvertBases(2);
        }

        void drawByteSwapper() {
            static std::string input, buffer, output;

            if (ImGui::InputTextIcon("hex.builtin.tools.input"_lang, ICON_VS_SYMBOL_NUMERIC, input, ImGuiInputTextFlags_CharsHexadecimal)) {
                auto nextAlignedSize = std::max<size_t>(2, std::bit_ceil(input.size()));

                buffer.clear();
                buffer.resize(nextAlignedSize - input.size(), '0');
                buffer += input;

                output.clear();
                for (u32 i = 0; i < buffer.size(); i += 2) {
                    output += buffer[buffer.size() - i - 2];
                    output += buffer[buffer.size() - i - 1];
                }
            }

            ImGui::PushStyleVar(ImGuiStyleVar_Alpha, ImGui::GetStyle().DisabledAlpha);
            ImGui::InputTextIcon("hex.builtin.tools.output"_lang, ICON_VS_SYMBOL_NUMERIC, output, ImGuiInputTextFlags_ReadOnly);
            ImGui::PopStyleVar();
        }

        void drawPermissionsCalculator() {
            static bool setuid, setgid, sticky;
            static bool r[3], w[3], x[3];

            ImGui::TextUnformatted("hex.builtin.tools.permissions.perm_bits"_lang);
            ImGui::Separator();

            if (ImGui::BeginTable("Permissions", 4, ImGuiTableFlags_Borders)) {
                ImGui::TableSetupColumn("Special", ImGuiTableColumnFlags_NoSort);
                ImGui::TableSetupColumn("User", ImGuiTableColumnFlags_NoSort);
                ImGui::TableSetupColumn("Group", ImGuiTableColumnFlags_NoSort);
                ImGui::TableSetupColumn("Other", ImGuiTableColumnFlags_NoSort);
                ImGui::TableSetupScrollFreeze(0, 1);

                ImGui::TableHeadersRow();

                ImGui::TableNextRow();
                ImGui::TableNextColumn();

                ImGui::Checkbox("setuid", &setuid);
                ImGui::Checkbox("setgid", &setgid);
                ImGui::Checkbox("Sticky bit", &sticky);

                for (u8 i = 0; i < 3; i++) {
                    ImGui::TableNextColumn();

                    ImGui::PushID(i);
                    ImGui::Checkbox("Read", &r[i]);
                    ImGui::Checkbox("Write", &w[i]);
                    ImGui::Checkbox("Execute", &x[i]);
                    ImGui::PopID();
                }

                ImGui::EndTable();
            }

            ImGui::NewLine();
            ImGui::TextUnformatted("hex.builtin.tools.permissions.absolute"_lang);
            ImGui::Separator();

            auto result = hex::format("{}{}{}{}",
                (setuid << 2) | (setgid << 1) | (sticky << 0),
                (r[0] << 2) | (w[0] << 1) | (x[0] << 0),
                (r[1] << 2) | (w[1] << 1) | (x[1] << 0),
                (r[2] << 2) | (w[2] << 1) | (x[2] << 0));
            ImGui::InputText("##permissions_absolute", result.data(), result.size(), ImGuiInputTextFlags_ReadOnly);

            ImGui::NewLine();

            constexpr static auto WarningColor = ImColor(0.92F, 0.25F, 0.2F, 1.0F);
            if (setuid && !x[0])
                ImGui::TextFormattedColored(WarningColor, "{}", "hex.builtin.tools.permissions.setuid_error"_lang);
            if (setgid && !x[1])
                ImGui::TextFormattedColored(WarningColor, "{}", "hex.builtin.tools.permissions.setgid_error"_lang);
            if (sticky && !x[2])
                ImGui::TextFormattedColored(WarningColor, "{}", "hex.builtin.tools.permissions.sticky_error"_lang);
        }

        /*void drawFileUploader() {
            struct UploadedFile {
                std::string fileName, link, size;
            };

            static HttpRequest request("POST", "https://api.anonfiles.com/upload");
            static std::future<HttpRequest::Result<std::string>> uploadProcess;
            static std::fs::path currFile;
            static std::vector<UploadedFile> links;

            bool uploading = uploadProcess.valid() && uploadProcess.wait_for(0s) != std::future_status::ready;

            ImGui::Header("hex.builtin.tools.file_uploader.control"_lang, true);
            if (!uploading) {
                if (ImGui::Button("hex.builtin.tools.file_uploader.upload"_lang)) {
                    fs::openFileBrowser(fs::DialogMode::Open, {}, [&](auto path) {
                        uploadProcess = request.uploadFile(path);
                        currFile      = path;
                    });
                }
            } else {
                if (ImGui::Button("hex.builtin.common.cancel"_lang)) {
                    request.cancel();
                }
            }

            ImGui::SameLine();

            ImGui::ProgressBar(request.getProgress(), ImVec2(0, 0), uploading ? nullptr : "Done!");

            ImGui::Header("hex.builtin.tools.file_uploader.recent"_lang);

            if (ImGui::BeginTable("##links", 3, ImGuiTableFlags_ScrollY | ImGuiTableFlags_Borders | ImGuiTableFlags_Resizable | ImGuiTableFlags_RowBg, ImVec2(0, 200))) {
                ImGui::TableSetupColumn("hex.builtin.common.file"_lang);
                ImGui::TableSetupColumn("hex.builtin.common.link"_lang);
                ImGui::TableSetupColumn("hex.builtin.common.size"_lang);
                ImGui::TableSetupScrollFreeze(0, 1);
                ImGui::TableHeadersRow();

                ImGuiListClipper clipper;
                clipper.Begin(links.size());

                while (clipper.Step()) {
                    for (i32 i = clipper.DisplayEnd - 1; i >= clipper.DisplayStart; i--) {
                        auto &[fileName, link, size] = links[i];

                        ImGui::TableNextRow();
                        ImGui::TableNextColumn();
                        ImGui::TextUnformatted(fileName.c_str());

                        ImGui::TableNextColumn();
                        if (ImGui::Hyperlink(link.c_str())) {
                            if (ImGui::IsKeyDown(ImGuiKey_LeftCtrl))
                                hex::openWebpage(link);
                            else
                                ImGui::SetClipboardText(link.c_str());
                        }

                        ImGui::InfoTooltip("hex.builtin.tools.file_uploader.tooltip"_lang);

                        ImGui::TableNextColumn();
                        ImGui::TextUnformatted(size.c_str());
                    }
                }

                clipper.End();

                ImGui::EndTable();
            }

            if (uploadProcess.valid() && uploadProcess.wait_for(0s) == std::future_status::ready) {
                auto response = uploadProcess.get();
                if (response.getStatusCode() == 200) {
                    try {
                        auto json = nlohmann::json::parse(response.getData());
                        links.push_back({
                            wolv::util::toUTF8String(currFile.filename()),
                            json.at("data").at("file").at("url").at("short"),
                            json.at("data").at("file").at("metadata").at("size").at("readable")
                        });
                    } catch (...) {
                        PopupError::open("hex.builtin.tools.file_uploader.invalid_response"_lang);
                    }
                } else if (response.getStatusCode() == 0) {
                    // Canceled by user, no action needed
                } else PopupError::open(hex::format("hex.builtin.tools.file_uploader.error"_lang, response.getStatusCode()));

                uploadProcess = {};
                currFile.clear();
            }
        }*/

        std::string getWikipediaApiUrl() {
            std::string setting = ContentRegistry::Settings::read("hex.builtin.setting.interface", "hex.builtin.setting.interface.wiki_explain_language", "en").get<std::string>();
            return "https://" + setting + ".wikipedia.org/w/api.php?format=json&action=query&prop=extracts&explaintext&redirects=10&formatversion=2";
        }

        void drawWikiExplainer() {
            static HttpRequest request("GET", "");

            static std::string resultTitle, resultExtract;
            static std::future<HttpRequest::Result<std::string>> searchProcess;
            static bool extendedSearch = false;
            static std::string searchString;

            ImGui::Header("hex.builtin.tools.wiki_explain.control"_lang, true);

            bool startSearch = ImGui::InputTextIcon("##search", ICON_VS_SYMBOL_KEY, searchString, ImGuiInputTextFlags_EnterReturnsTrue);

            ImGui::SameLine();

            ImGui::BeginDisabled((searchProcess.valid() && searchProcess.wait_for(0s) != std::future_status::ready) || searchString.empty());
            startSearch = ImGui::Button("hex.builtin.tools.wiki_explain.search"_lang) || startSearch;
            ImGui::EndDisabled();

            if (startSearch && !searchString.empty()) {
                request.setUrl(getWikipediaApiUrl() + "&exintro"s + "&titles="s + request.urlEncode(searchString));
                searchProcess = request.execute();
            }

            ImGui::Header("hex.builtin.tools.wiki_explain.results"_lang);

            if (ImGui::BeginChild("##summary", ImVec2(0, 300), true)) {
                if (!resultTitle.empty() && !resultExtract.empty()) {
                    ImGui::HeaderColored(resultTitle.c_str(), ImGui::GetCustomColorVec4(ImGuiCustomCol_Highlight), true);
                    ImGui::TextFormattedWrapped("{}", resultExtract.c_str());
                }
            }
            ImGui::EndChild();

            if (searchProcess.valid() && searchProcess.wait_for(0s) == std::future_status::ready) {
                try {
                    auto response = searchProcess.get();
                    if (response.getStatusCode() != 200) throw std::runtime_error("Invalid response");

                    auto json = nlohmann::json::parse(response.getData());

                    resultTitle   = json.at("query").at("pages").at(0).at("title").get<std::string>();
                    resultExtract = json.at("query").at("pages").at(0).at("extract").get<std::string>();

                    if (!extendedSearch && resultExtract.ends_with(':')) {
                        extendedSearch = true;

                        request.setUrl(getWikipediaApiUrl() + "&titles="s + request.urlEncode(searchString));
                        searchProcess  = request.execute();

                        resultTitle.clear();
                        resultExtract.clear();
                        searchString.clear();
                    } else {
                        extendedSearch = false;
                        searchString.clear();
                    }
                } catch (...) {
                    searchString.clear();
                    resultTitle.clear();
                    resultExtract.clear();
                    extendedSearch = false;
                    searchProcess  = {};

                    resultTitle   = "???";
                    resultExtract = "hex.builtin.tools.wiki_explain.invalid_response"_lang.get();
                }
            }
        }


        void drawFileToolShredder() {
            static std::u8string selectedFile;
            static bool fastMode     = false;
            static TaskHolder shredderTask;

            ImGui::TextUnformatted("hex.builtin.tools.file_tools.shredder.warning"_lang);
            ImGui::NewLine();

            if (ImGui::BeginChild("settings", { 0, ImGui::GetTextLineHeightWithSpacing() * 4 }, true, ImGuiWindowFlags_NoScrollbar | ImGuiWindowFlags_NoScrollWithMouse)) {
                ImGui::BeginDisabled(shredderTask.isRunning());
                {
                    ImGui::TextUnformatted("hex.builtin.tools.file_tools.shredder.input"_lang);
                    ImGui::SameLine();
                    ImGui::InputText("##path", selectedFile);
                    ImGui::SameLine();
                    if (ImGui::Button("...")) {
                        fs::openFileBrowser(fs::DialogMode::Open, {}, [](const auto &path) {
                            selectedFile = path.u8string();
                        });
                    }

                    ImGui::Checkbox("hex.builtin.tools.file_tools.shredder.fast"_lang, &fastMode);
                }
                ImGui::EndDisabled();
            }
            ImGui::EndChild();

            if (shredderTask.isRunning())
                ImGui::TextSpinner("hex.builtin.tools.file_tools.shredder.shredding"_lang);
            else {
                ImGui::BeginDisabled(selectedFile.empty());
                {
                    if (ImGui::Button("hex.builtin.tools.file_tools.shredder.shred"_lang)) {
                        shredderTask = TaskManager::createTask("hex.builtin.tools.file_tools.shredder.shredding", 0, [](auto &task) {
                            ON_SCOPE_EXIT {
                                selectedFile.clear();
                            };
                            wolv::io::File file(selectedFile, wolv::io::File::Mode::Write);

                            if (!file.isValid()) {
                                PopupError::open("hex.builtin.tools.file_tools.shredder.error.open"_lang);
                                return;
                            }

                            task.setMaxValue(file.getSize());

                            std::vector<std::array<u8, 3>> overwritePattern;
                            if (fastMode) {
                                /* Should be sufficient for modern disks */
                                overwritePattern.push_back({ 0x00, 0x00, 0x00 });
                                overwritePattern.push_back({ 0xFF, 0xFF, 0xFF });
                            } else {
                                /* Gutmann's method. Secure for magnetic storage */
                                std::random_device rd;
                                std::uniform_int_distribution<u8> dist(0x00, 0xFF);

                                /* Fill fixed patterns */
                                overwritePattern = {
                                        {    },
                                        {    },
                                        {},
                                        {},
                                        { 0x55, 0x55, 0x55 },
                                        { 0xAA, 0xAA, 0xAA },
                                        { 0x92, 0x49, 0x24 },
                                        { 0x49, 0x24, 0x92 },
                                        { 0x24, 0x92, 0x49 },
                                        { 0x00, 0x00, 0x00 },
                                        { 0x11, 0x11, 0x11 },
                                        { 0x22, 0x22, 0x22 },
                                        { 0x33, 0x33, 0x44 },
                                        { 0x55, 0x55, 0x55 },
                                        { 0x66, 0x66, 0x66 },
                                        { 0x77, 0x77, 0x77 },
                                        { 0x88, 0x88, 0x88 },
                                        { 0x99, 0x99, 0x99 },
                                        { 0xAA, 0xAA, 0xAA },
                                        { 0xBB, 0xBB, 0xBB },
                                        { 0xCC, 0xCC, 0xCC },
                                        { 0xDD, 0xDD, 0xDD },
                                        { 0xEE, 0xEE, 0xEE },
                                        { 0xFF, 0xFF, 0xFF },
                                        { 0x92, 0x49, 0x24 },
                                        { 0x49, 0x24, 0x92 },
                                        { 0x24, 0x92, 0x49 },
                                        { 0x6D, 0xB6, 0xDB },
                                        { 0xB6, 0xDB, 0x6D },
                                        { 0xBD, 0x6D, 0xB6 },
                                        {},
                                        {},
                                        {},
                                        {}
                                };

                                /* Fill random patterns */
                                for (u8 i = 0; i < 4; i++)
                                    overwritePattern[i] = { dist(rd), dist(rd), dist(rd) };
                                for (u8 i = 0; i < 4; i++)
                                    overwritePattern[overwritePattern.size() - 1 - i] = { dist(rd), dist(rd), dist(rd) };
                            }

                            size_t fileSize = file.getSize();

                            for (const auto &pattern : overwritePattern) {
                                for (u64 offset = 0; offset < fileSize; offset += 3) {
                                    file.writeBuffer(pattern.data(), std::min<u64>(pattern.size(), fileSize - offset));
                                    task.update(offset);
                                }

                                file.flush();
                            }

                            file.remove();

                            PopupInfo::open("hex.builtin.tools.file_tools.shredder.success"_lang);
                        });
                    }
                }
                ImGui::EndDisabled();
            }
        }

        void drawFileToolSplitter() {
            std::array sizeText = {
                static_cast<const char*>("hex.builtin.tools.file_tools.splitter.sizes.5_75_floppy"_lang),
                static_cast<const char*>("hex.builtin.tools.file_tools.splitter.sizes.3_5_floppy"_lang),
                static_cast<const char*>("hex.builtin.tools.file_tools.splitter.sizes.zip100"_lang),
                static_cast<const char*>("hex.builtin.tools.file_tools.splitter.sizes.zip200"_lang),
                static_cast<const char*>("hex.builtin.tools.file_tools.splitter.sizes.cdrom650"_lang),
                static_cast<const char*>("hex.builtin.tools.file_tools.splitter.sizes.cdrom700"_lang),
                static_cast<const char*>("hex.builtin.tools.file_tools.splitter.sizes.fat32"_lang),
                static_cast<const char*>("hex.builtin.tools.file_tools.splitter.sizes.custom"_lang)
            };
            std::array<u64, sizeText.size()> sizes = {
                1200_KiB,
                1400_KiB,
                100_MiB,
                200_MiB,
                650_MiB,
                700_MiB,
                4_GiB,
                1
            };

            static std::u8string selectedFile;
            static std::u8string baseOutputPath;
            static u64 splitSize = sizes[0];
            static int selectedItem = 0;
            static TaskHolder splitterTask;

            if (ImGui::BeginChild("split_settings", { 0, ImGui::GetTextLineHeightWithSpacing() * 7 }, true, ImGuiWindowFlags_NoScrollbar | ImGuiWindowFlags_NoScrollWithMouse)) {
                ImGui::BeginDisabled(splitterTask.isRunning());
                {
                    ImGui::InputText("##path", selectedFile);
                    ImGui::SameLine();
                    if (ImGui::Button("...##input")) {
                        fs::openFileBrowser(fs::DialogMode::Open, {}, [](const auto &path) {
                            selectedFile = path.u8string();
                        });
                    }
                    ImGui::SameLine();
                    ImGui::TextUnformatted("hex.builtin.tools.file_tools.splitter.input"_lang);

                    ImGui::InputText("##base_path", baseOutputPath);
                    ImGui::SameLine();
                    if (ImGui::Button("...##output")) {
                        fs::openFileBrowser(fs::DialogMode::Save, {}, [](const auto &path) {
                            baseOutputPath = path.u8string();
                        });
                    }
                    ImGui::SameLine();
                    ImGui::TextUnformatted("hex.builtin.tools.file_tools.splitter.output"_lang);

                    ImGui::Separator();

                    if (ImGui::Combo("###part_size", &selectedItem, sizeText.data(), sizeText.size())) {
                        splitSize = sizes[selectedItem];
                    }
                }
                ImGui::EndDisabled();
                ImGui::BeginDisabled(splitterTask.isRunning() || selectedItem != sizes.size() - 1);
                {
                    ImGui::InputScalar("###custom_size", ImGuiDataType_U64, &splitSize);
                    ImGui::SameLine();
                    ImGui::TextUnformatted("Bytes");
                }
                ImGui::EndDisabled();
            }
            ImGui::EndChild();

            ImGui::BeginDisabled(selectedFile.empty() || baseOutputPath.empty() || splitSize == 0);
            {
                if (splitterTask.isRunning())
                    ImGui::TextSpinner("hex.builtin.tools.file_tools.splitter.picker.splitting"_lang);
                else {
                    if (ImGui::Button("hex.builtin.tools.file_tools.splitter.picker.split"_lang)) {
                        splitterTask = TaskManager::createTask("hex.builtin.tools.file_tools.splitter.picker.splitting", 0, [](auto &task) {
                            ON_SCOPE_EXIT {
                                selectedFile.clear();
                                baseOutputPath.clear();
                            };

                            wolv::io::File file(selectedFile, wolv::io::File::Mode::Read);

                            if (!file.isValid()) {
                                PopupError::open("hex.builtin.tools.file_tools.splitter.picker.error.open"_lang);
                                return;
                            }

                            if (file.getSize() < splitSize) {
                                PopupError::open("hex.builtin.tools.file_tools.splitter.picker.error.size"_lang);
                                return;
                            }

                            task.setMaxValue(file.getSize());

                            u32 index = 1;
                            for (u64 offset = 0; offset < file.getSize(); offset += splitSize) {
                                task.update(offset);

                                std::fs::path path = baseOutputPath;
                                path += hex::format(".{:05}", index);

                                wolv::io::File partFile(path, wolv::io::File::Mode::Create);

                                if (!partFile.isValid()) {
                                    PopupError::open(hex::format("hex.builtin.tools.file_tools.splitter.picker.error.create"_lang, index));
                                    return;
                                }

                                constexpr static auto BufferSize = 0xFF'FFFF;
                                for (u64 partOffset = 0; partOffset < splitSize; partOffset += BufferSize) {
                                    partFile.writeVector(file.readVector(std::min<u64>(BufferSize, splitSize - partOffset)));
                                    partFile.flush();
                                }

                                index++;
                            }

                            PopupInfo::open("hex.builtin.tools.file_tools.splitter.picker.success"_lang);
                        });
                    }
                }
            }
            ImGui::EndDisabled();
        }

        void drawFileToolCombiner() {
            static std::vector<std::fs::path> files;
            static std::u8string outputPath;
            static u32 selectedIndex;
            static TaskHolder combinerTask;

            if (ImGui::BeginTable("files_table", 2, ImGuiTableFlags_SizingStretchProp)) {
                ImGui::TableSetupColumn("file list", ImGuiTableColumnFlags_NoHeaderLabel, 10);
                ImGui::TableSetupColumn("buttons", ImGuiTableColumnFlags_NoHeaderLabel, 1);
                ImGui::TableNextRow();
                ImGui::TableNextColumn();

                if (ImGui::BeginListBox("##files", { -FLT_MIN, 10 * ImGui::GetTextLineHeightWithSpacing() })) {
                    u32 index = 0;
                    for (auto &file : files) {
                        if (ImGui::Selectable(wolv::util::toUTF8String(file).c_str(), index == selectedIndex))
                            selectedIndex = index;
                        index++;
                    }

                    ImGui::EndListBox();
                }

                ImGui::TableNextColumn();

                ImGui::BeginDisabled(selectedIndex <= 0);
                {
                    if (ImGui::ArrowButton("move_up", ImGuiDir_Up)) {
                        std::iter_swap(files.begin() + selectedIndex, files.begin() + selectedIndex - 1);
                        selectedIndex--;
                    }
                }
                ImGui::EndDisabled();

                ImGui::BeginDisabled(files.empty() || selectedIndex >= files.size() - 1);
                {
                    if (ImGui::ArrowButton("move_down", ImGuiDir_Down)) {
                        std::iter_swap(files.begin() + selectedIndex, files.begin() + selectedIndex + 1);
                        selectedIndex++;
                    }
                }
                ImGui::EndDisabled();

                ImGui::TableNextRow();
                ImGui::TableNextColumn();

                ImGui::BeginDisabled(combinerTask.isRunning());
                {
                    if (ImGui::Button("hex.builtin.tools.file_tools.combiner.add"_lang)) {
                        fs::openFileBrowser(fs::DialogMode::Open, {}, [](const auto &path) {
                            files.push_back(path);
                        }, "", true);
                    }
                    ImGui::SameLine();
                    ImGui::BeginDisabled(files.empty() || selectedIndex >= files.size());
                    if (ImGui::Button("hex.builtin.tools.file_tools.combiner.delete"_lang)) {
                        files.erase(files.begin() + selectedIndex);

                        if (selectedIndex > 0)
                            selectedIndex--;
                    }
                    ImGui::EndDisabled();
                    ImGui::SameLine();
                    ImGui::BeginDisabled(files.empty());
                    if (ImGui::Button("hex.builtin.tools.file_tools.combiner.clear"_lang)) {
                        files.clear();
                    }
                    ImGui::EndDisabled();
                }
                ImGui::EndDisabled();

                ImGui::EndTable();
            }

            ImGui::BeginDisabled(combinerTask.isRunning());
            {
                ImGui::InputText("##output_path", outputPath);
                ImGui::SameLine();
                if (ImGui::Button("...")) {
                    fs::openFileBrowser(fs::DialogMode::Save, {}, [](const auto &path) {
                        outputPath = path.u8string();
                    });
                }
                ImGui::SameLine();
                ImGui::TextUnformatted("hex.builtin.tools.file_tools.combiner.output"_lang);
            }
            ImGui::EndDisabled();

            ImGui::BeginDisabled(files.empty() || outputPath.empty());
            {
                if (combinerTask.isRunning())
                    ImGui::TextSpinner("hex.builtin.tools.file_tools.combiner.combining"_lang);
                else {
                    if (ImGui::Button("hex.builtin.tools.file_tools.combiner.combine"_lang)) {
                        combinerTask = TaskManager::createTask("hex.builtin.tools.file_tools.combiner.combining", 0, [](auto &task) {
                            wolv::io::File output(outputPath, wolv::io::File::Mode::Create);

                            if (!output.isValid()) {
                                PopupError::open("hex.builtin.tools.file_tools.combiner.error.open_output"_lang);
                                return;
                            }

                            task.setMaxValue(files.size());

                            u64 fileIndex = 0;
                            for (const auto &file : files) {
                                task.update(fileIndex);
                                fileIndex++;

                                wolv::io::File input(file, wolv::io::File::Mode::Read);
                                if (!input.isValid()) {
                                    PopupError::open(hex::format("hex.builtin.tools.file_tools.combiner.open_input"_lang, wolv::util::toUTF8String(file)));
                                    return;
                                }

                                constexpr static auto BufferSize = 0xFF'FFFF;
                                auto inputSize = input.getSize();
                                for (u64 inputOffset = 0; inputOffset < inputSize; inputOffset += BufferSize) {
                                    output.writeVector(input.readVector(std::min<u64>(BufferSize, inputSize - inputOffset)));
                                    output.flush();
                                }
                            }

                            files.clear();
                            selectedIndex = 0;
                            outputPath.clear();

                            PopupInfo::open("hex.builtin.tools.file_tools.combiner.success"_lang);
                        });
                    }
                }
            }
            ImGui::EndDisabled();
        }

        void drawFileTools() {
            if (ImGui::BeginTabBar("file_tools_tabs")) {
                if (ImGui::BeginTabItem("hex.builtin.tools.file_tools.shredder"_lang)) {
                    drawFileToolShredder();
                    ImGui::EndTabItem();
                }

                if (ImGui::BeginTabItem("hex.builtin.tools.file_tools.splitter"_lang)) {
                    drawFileToolSplitter();
                    ImGui::EndTabItem();
                }

                if (ImGui::BeginTabItem("hex.builtin.tools.file_tools.combiner"_lang)) {
                    drawFileToolCombiner();
                    ImGui::EndTabItem();
                }

                ImGui::EndTabBar();
            }
        }

        // Tool for converting between different number formats.
        // There are three places where input can be changed; the bit checkboxes, the hex input, and the decimal input.
        // The bit checkboxes and the hex input are directly related and can be converted between each other easily.
        // The decimal input is a bit more complicated. IEEE 754 floating point numbers are represented as a sign bit,
        // an exponent and a mantissa. For details see https://en.wikipedia.org/wiki/IEEE_754.
        // Workflow is as follows:
        // From the bit checkboxes determine the integer hex value. This is straightforward.
        // From the hex value determine the binary floating point value by extracting the sign, exponent, and mantissa.
        // From the binary floating point value determine the decimal floating point value using a third party library.
        // From the decimal floating point we reconstruct the binary floating point value using internal hardware.
        // If the format is non-standard, the reconstruction is done using properties of the format.
        void drawIEEE754Decoder() {

            constexpr static auto flags = ImGuiInputTextFlags_EnterReturnsTrue;

            class IEEE754STATICS {
            public:
                IEEE754STATICS() {
                    value = 0;
                    exponentBitCount = 8;
                    mantissaBitCount = 23;
                    resultFloat = 0;
                }

                u128 value;
                i32 exponentBitCount;
                i32 mantissaBitCount;
                long double resultFloat;
            };

            static IEEE754STATICS ieee754statics;


            enum class NumberType {
                Normal,
                Zero,
                Denormal,
                Infinity,
                NaN,
            };

            enum class InputType {
                Infinity,
                NotANumber,
                QuietNotANumber,
                SignalingNotANumber,
                Regular,
                Invalid
            };

            enum class ValueType {
                Regular,
                SignalingNaN,
                QuietNaN,
                NegativeInfinity,
                PositiveInfinity,
            };

            class IEEE754 {
            public:
                ValueType valueType;
                NumberType numberType;
                i64 exponentBias;
                long double signValue;
                long double exponentValue;
                long double mantissaValue;
                i64 signBits;
                i64 exponentBits;
                i64 mantissaBits;
                i64 precision;
            } ieee754 = {};

            std::string specialNumbers[] = {
                    "inf" , "Inf", "INF" , "nan" , "Nan" , "NAN",
                    "qnan","Qnan", "QNAN", "snan", "Snan", "SNAN"
            };


            const auto totalBitCount = ieee754statics.exponentBitCount + ieee754statics.mantissaBitCount;
            const auto signBitPosition = totalBitCount - 0;
            const auto exponentBitPosition = totalBitCount - 1;
            const auto mantissaBitPosition = totalBitCount - 1 - ieee754statics.exponentBitCount;

            const static auto ExtractBits = [](u32 startBit, u32 count) {
                return hex::extract(startBit, startBit - (count - 1), ieee754statics.value);
            };

            ieee754.signBits = ExtractBits(signBitPosition, 1);
            ieee754.exponentBits = ExtractBits(exponentBitPosition, ieee754statics.exponentBitCount);
            ieee754.mantissaBits = ExtractBits(mantissaBitPosition, ieee754statics.mantissaBitCount);


            static i64 inputFieldWidth = 0;
            ImGui::TextFormattedWrapped("{}", "hex.builtin.tools.ieee754.description"_lang);
            ImGui::NewLine();

            static i64 displayMode = ContentRegistry::Settings::read("hex.builtin.tools.ieee754.settings", "display_mode", 0);
            i64 displayModeTemp = displayMode;
            ImGui::RadioButton("hex.builtin.tools.ieee754.settings.display_mode.detailed"_lang, reinterpret_cast<int *>(&displayMode), 0);
            ImGui::SameLine();

            ImGui::RadioButton("hex.builtin.tools.ieee754.settings.display_mode.simplified"_lang, reinterpret_cast<int *>(&displayMode), 1);
            if (displayModeTemp != displayMode) {
                ContentRegistry::Settings::write("hex.builtin.tools.ieee754.settings", "display_mode", displayMode);
                displayModeTemp = displayMode;
            }

            auto tableFlags = ImGuiTableFlags_SizingFixedFit | ImGuiTableFlags_NoKeepColumnsVisible |
                                     ImGuiTableFlags_ScrollX | ImGuiTableFlags_NoPadInnerX;

            const static auto IndentBoxOrLabel = [](u32 startBit, u32 bitIndex, u32 count, bool isLabel) {
                auto checkBoxWidth = ImGui::CalcTextSize("0").x + ImGui::GetStyle().FramePadding.x * 2.0f;
                auto columnWidth = ImGui::GetColumnWidth();
                float boxesPerColumn=columnWidth/checkBoxWidth;
                float result;
                if (isLabel) {
                    std::string labelString = fmt::format("{}", bitIndex);
                    auto labelWidth = ImGui::CalcTextSize(labelString.c_str()).x;
                    auto leadingBoxes = (boxesPerColumn-count)/2.0f;
                    if (leadingBoxes < 0.0f)
                       leadingBoxes = 0.0f;
                    result = checkBoxWidth*(leadingBoxes + startBit - bitIndex + 0.5f)-labelWidth/2.0f;
                } else {
                    if (count < boxesPerColumn)
                        result = (columnWidth - count * checkBoxWidth) / 2.0f;
                    else
                        result = 0.0;
                }
                if (result <= 0.0f)
                    result = 0.05;
                return result;
            };

            const static auto DisplayBitLabels = [](int startBit, int count) {
                static i32 lastLabelAdded = -1;
                i32 labelIndex;
                if (lastLabelAdded == -1 || count < 4)
                    labelIndex = startBit - (count >> 1);
                else
                    labelIndex = lastLabelAdded - 4;

                while (labelIndex + count > startBit) {
                    auto indentSize = IndentBoxOrLabel(startBit, labelIndex, count, true);
                    ImGui::Indent(indentSize );
                    ImGui::TextFormatted("{}", labelIndex);
                    lastLabelAdded = labelIndex;
                    ImGui::Unindent(indentSize );
                    labelIndex -= 4;
                    ImGui::SameLine();
                }
            };

            const static auto FormatBitLabels = [](i32 totalBitCount, i32 exponentBitPosition, i32 mantissaBitPosition) {
                // Row for bit labels. Due to font size constrains each bit cannot have its own label.
                // Instead, we label each 4 bits and then use the bit position to determine the bit label.
                // Result.
                ImGui::TableNextColumn();
                // Equals.
                ImGui::TableNextColumn();
                // Sign bit label is always shown.
                ImGui::TableNextColumn();

                DisplayBitLabels(totalBitCount + 1, 1);
                // Times.
                ImGui::TableNextColumn();
                // Exponent.
                ImGui::TableNextColumn();

                DisplayBitLabels(exponentBitPosition + 1, ieee754statics.exponentBitCount);

                // Times.
                ImGui::TableNextColumn();
                // Mantissa.
                ImGui::TableNextColumn();

                DisplayBitLabels(mantissaBitPosition + 1, ieee754statics.mantissaBitCount);
            };



            const static auto BitCheckbox = [](u8 bit) {
                bool checkbox = false;
                ImGui::PushStyleVar(ImGuiStyleVar_FrameBorderSize, 1.0f);
                checkbox = (ieee754statics.value & (u128(1) << bit)) != 0;
                ImGui::BitCheckbox("##checkbox", &checkbox);
                ieee754statics.value = (ieee754statics.value & ~(u128(1) << bit)) | (u128(checkbox) << bit);
                ImGui::PopStyleVar();
            };


            const static auto BitCheckboxes = [](u32 startBit, u32 count) {
                for (u32 i = 0; i < count; i++) {
                    ImGui::PushID(startBit - i);
                    BitCheckbox(startBit - i);
                    ImGui::SameLine(0, 0);
                    ImGui::PopID();
                }
            };

            const static auto FormatBits = [](i32 signBitPosition, i32 exponentBitPosition, i32 mantissaBitPosition) {

                // Sign.
                ImGui::TableNextColumn();

                ImVec4 signColor = ImGui::GetCustomColorVec4(ImGuiCustomCol_IEEEToolSign);
                ImVec4 expColor = ImGui::GetCustomColorVec4(ImGuiCustomCol_IEEEToolExp);
                ImVec4 mantColor = ImGui::GetCustomColorVec4(ImGuiCustomCol_IEEEToolMantissa);
                ImVec4 black = ImVec4(0.0, 0.0, 0.0, 1.0);

                float indent = IndentBoxOrLabel(signBitPosition,signBitPosition, 1, false);
                ImGui::Indent(indent);
                ImGui::PushStyleColor(ImGuiCol_FrameBg, signColor);
                ImGui::PushStyleColor(ImGuiCol_Border, black);

                BitCheckboxes(signBitPosition, 1);

                ImGui::PopStyleColor();
                ImGui::PopStyleColor();
                ImGui::Unindent(indent);

                // Times.
                ImGui::TableNextColumn();
                // Exponent.
                ImGui::TableNextColumn();
                indent = IndentBoxOrLabel(exponentBitPosition,exponentBitPosition, ieee754statics.exponentBitCount, false);
                ImGui::Indent(indent);
                ImGui::PushStyleColor(ImGuiCol_FrameBg, expColor);
                ImGui::PushStyleColor(ImGuiCol_Border, black);

                BitCheckboxes(exponentBitPosition, ieee754statics.exponentBitCount);

                ImGui::PopStyleColor();
                ImGui::PopStyleColor();
                ImGui::Unindent(indent);
                // Times.
                ImGui::TableNextColumn();
                // Mantissa.
                ImGui::TableNextColumn();

                indent = IndentBoxOrLabel(mantissaBitPosition,mantissaBitPosition, ieee754statics.mantissaBitCount, false);
                ImGui::Indent(indent);
                ImGui::PushStyleColor(ImGuiCol_FrameBg, mantColor);
                ImGui::PushStyleColor(ImGuiCol_Border, black);

                BitCheckboxes(mantissaBitPosition, ieee754statics.mantissaBitCount);

                ImGui::PopStyleColor();
                ImGui::PopStyleColor();
                ImGui::Unindent(indent);
            };

            const static auto BitsToFloat = [](IEEE754 &ieee754) {
                // Zero or denormal.
                if (ieee754.exponentBits == 0) {
                    // Result doesn't fit in 128 bits.
                    if ((ieee754.exponentBias - 1) > 128)
                        ieee754.exponentValue = std::pow(2.0L, static_cast<long double>(-ieee754.exponentBias + 1));
                    else {
                        if (ieee754.exponentBias == 0) {
                            // Exponent is zero.
                            if (ieee754.mantissaBits == 0)
                                ieee754.exponentValue = 1.0;
                            else
                                // Exponent is one.
                                ieee754.exponentValue = 2.0;
                        }
                        else
                            ieee754.exponentValue = 1.0 / static_cast<long double>(u128(1) << (ieee754.exponentBias - 1));
                    }
                }
                    // Normal.
                else {
                    // Result doesn't fit in 128 bits.
                    if (std::abs(ieee754.exponentBits - ieee754.exponentBias) > 128)
                        ieee754.exponentValue = std::pow(2.0L, static_cast<long double>(ieee754.exponentBits - ieee754.exponentBias));
                        //Result fits in 128 bits.
                    else {
                        // Exponent is positive.
                        if (ieee754.exponentBits > ieee754.exponentBias)
                            ieee754.exponentValue = static_cast<long double>(u128(1) << (ieee754.exponentBits - ieee754.exponentBias));
                            // Exponent is negative.
                        else if (ieee754.exponentBits < ieee754.exponentBias)
                            ieee754.exponentValue = 1.0 / static_cast<long double>(u128(1) << (ieee754.exponentBias - ieee754.exponentBits));
                            // Exponent is zero.
                        else ieee754.exponentValue = 1.0;
                    }
                }

                ieee754.mantissaValue = static_cast<long double>(ieee754.mantissaBits) / static_cast<long double>(u128(1) << (ieee754statics.mantissaBitCount));
                if (ieee754.exponentBits != 0)
                    ieee754.mantissaValue += 1.0;

                // Check if all exponent bits are set.
                if (std::popcount(static_cast<u64>(ieee754.exponentBits)) == static_cast<i64>(ieee754statics.exponentBitCount)) {
                    // If fraction is zero number is infinity,
                    if (ieee754.mantissaBits == 0) {
                        if (ieee754.signBits == 0) {

                            ieee754.valueType = ValueType::PositiveInfinity;
                            ieee754statics.resultFloat = std::numeric_limits<long double>::infinity();

                        } else {

                            ieee754.valueType = ValueType::NegativeInfinity;
                            ieee754statics.resultFloat = -std::numeric_limits<long double>::infinity();

                        }
                        ieee754.numberType = NumberType::Infinity;

                        // otherwise number is NaN.
                    } else {
                        if (ieee754.mantissaBits & (u128(1) << (ieee754statics.mantissaBitCount - 1))) {

                            ieee754.valueType = ValueType::QuietNaN;
                            ieee754statics.resultFloat = std::numeric_limits<long double>::quiet_NaN();

                        } else {

                            ieee754.valueType = ValueType::SignalingNaN;
                            ieee754statics.resultFloat = std::numeric_limits<long double>::signaling_NaN();

                        }
                        ieee754.numberType = NumberType::NaN;
                    }
                    // If all exponent bits are zero, but we have a non-zero fraction
                    // then the number is denormal which are smaller than regular numbers
                    // but not as precise.
                } else if (ieee754.exponentBits == 0 && ieee754.mantissaBits != 0) {

                    ieee754.numberType = NumberType::Denormal;
                    ieee754.valueType = ValueType::Regular;
                    ieee754statics.resultFloat = ieee754.signValue * ieee754.exponentValue * ieee754.mantissaValue;

                } else {

                    ieee754.numberType = NumberType::Normal;
                    ieee754.valueType = ValueType::Regular;
                    ieee754statics.resultFloat = ieee754.signValue * ieee754.exponentValue *  ieee754.mantissaValue;

                }
            };

            const static auto FloatToBits = [&specialNumbers](IEEE754 &ieee754, std::string decimalFloatingPointNumberString, int totalBitCount) {

                // Always obtain sign first.
                if (decimalFloatingPointNumberString[0] == '-') {
                    // And remove it from the string.
                    ieee754.signBits = 1;
                    decimalFloatingPointNumberString.erase(0, 1);
                } else
                    // Important to switch from - to +.
                    ieee754.signBits = 0;

                InputType inputType = InputType::Regular;
                bool matchFound = false;

                // Detect and use special numbers.
                for (u32 i = 0; i < 12; i++) {
                    if (decimalFloatingPointNumberString == specialNumbers[i]) {
                        inputType = InputType(i/3);
                        matchFound = true;
                        break;
                    }
                }

                if (!matchFound)
                    inputType = InputType::Regular;

                if (inputType == InputType::Regular) {
                    try {
                        ieee754statics.resultFloat = stod(decimalFloatingPointNumberString);
                    } catch(const std::invalid_argument& _) {
                        inputType = InputType::Invalid;
                    }
                } else if (inputType == InputType::Infinity) {
                    ieee754statics.resultFloat = std::numeric_limits<long double>::infinity();
                    ieee754statics.resultFloat *= (ieee754.signBits == 1 ? -1 : 1);

                } else if (inputType == InputType::NotANumber)
                    ieee754statics.resultFloat = std::numeric_limits<long double>::quiet_NaN();

                else if (inputType == InputType::QuietNotANumber)
                    ieee754statics.resultFloat = std::numeric_limits<long double>::quiet_NaN();

                else if (inputType == InputType::SignalingNotANumber)
                    ieee754statics.resultFloat = std::numeric_limits<long double>::signaling_NaN();


                if (inputType != InputType::Invalid) {
                    // Deal with zero first so we can use log2.
                    if (ieee754statics.resultFloat == 0.0) {
                        if (ieee754.signBits == 1)
                            ieee754statics.resultFloat = -0.0;
                        else
                            ieee754statics.resultFloat = 0.0;
                        ieee754.numberType = NumberType::Zero;
                        ieee754.valueType = ValueType::Regular;
                        ieee754.exponentBits = 0;
                        ieee754.mantissaBits = 0;

                    } else {
                        long double log2Result = std::log2(ieee754statics.resultFloat);
                        // 2^(bias+1)-2^(bias-prec) is the largest number that can be represented.
                        // If the number entered is larger than this then the input is set to infinity.
                        if (ieee754statics.resultFloat > (std::pow(2.0L, ieee754.exponentBias + 1) - std::pow(2.0L, ieee754.exponentBias - ieee754statics.mantissaBitCount)) || inputType == InputType::Infinity ) {

                            ieee754statics.resultFloat = std::numeric_limits<long double>::infinity();
                            ieee754.numberType = NumberType::Infinity;
                            ieee754.valueType = ieee754.signBits == 1 ? ValueType::NegativeInfinity : ValueType::PositiveInfinity;
                            ieee754.exponentBits = (u128(1) << ieee754statics.exponentBitCount) - 1;
                            ieee754.mantissaBits = 0;

                        } else if (-std::rint(log2Result) > ieee754.exponentBias + ieee754statics.mantissaBitCount - 1) {

                            // 1/2^(bias-1+prec) is the smallest number that can be represented.
                            // If the number entered is smaller than this then the input is set to zero.
                            if (ieee754.signBits == 1)
                                ieee754statics.resultFloat = -0.0;
                            else
                                ieee754statics.resultFloat = 0.0;

                            ieee754.numberType = NumberType::Zero;
                            ieee754.valueType = ValueType::Regular;
                            ieee754.exponentBits = 0;
                            ieee754.mantissaBits = 0;

                        } else if (inputType == InputType::SignalingNotANumber) {

                            ieee754statics.resultFloat = std::numeric_limits<long double>::signaling_NaN();
                            ieee754.valueType = ValueType::SignalingNaN;
                            ieee754.numberType = NumberType::NaN;
                            ieee754.exponentBits = (u128(1) << ieee754statics.exponentBitCount) - 1;
                            ieee754.mantissaBits = 1;

                        } else if (inputType == InputType::QuietNotANumber || inputType == InputType::NotANumber ) {

                            ieee754statics.resultFloat = std::numeric_limits<long double>::quiet_NaN();
                            ieee754.valueType = ValueType::QuietNaN;
                            ieee754.numberType = NumberType::NaN;
                            ieee754.exponentBits = (u128(1) << ieee754statics.exponentBitCount) - 1;
                            ieee754.mantissaBits = (u128(1) << (ieee754statics.mantissaBitCount - 1));

                        } else if (static_cast<i64>(std::floor(log2Result)) + ieee754.exponentBias <= 0) {

                            ieee754.numberType = NumberType::Denormal;
                            ieee754.valueType = ValueType::Regular;
                            ieee754.exponentBits = 0;
                            auto mantissaExp = log2Result + ieee754.exponentBias + ieee754statics.mantissaBitCount - 1;
                            ieee754.mantissaBits = static_cast<i64>(std::round(std::pow(2.0L, mantissaExp)));

                        } else {

                            ieee754.valueType = ValueType::Regular;
                            ieee754.numberType = NumberType::Normal;
                            i64 unBiasedExponent = static_cast<i64>(std::floor(log2Result));
                            ieee754.exponentBits = unBiasedExponent + ieee754.exponentBias;
                            ieee754.mantissaValue = ieee754statics.resultFloat * std::pow(2.0L, -unBiasedExponent) - 1;
                            ieee754.mantissaBits = static_cast<i64>(std::round( static_cast<long double>(u128(1) << (ieee754statics.mantissaBitCount)) * ieee754.mantissaValue));

                        }
                    }
                    // Put the bits together.
                    ieee754statics.value = (ieee754.signBits << (totalBitCount)) | (ieee754.exponentBits << (totalBitCount - ieee754statics.exponentBitCount)) | ieee754.mantissaBits;
                }
            };

            const static auto DisplayDecimal  = [](IEEE754 &ieee754) {

                unsigned signColorU32 = ImGui::GetCustomColorU32(ImGuiCustomCol_IEEEToolSign);
                unsigned expColorU32 = ImGui::GetCustomColorU32(ImGuiCustomCol_IEEEToolExp);
                unsigned mantColorU32 = ImGui::GetCustomColorU32(ImGuiCustomCol_IEEEToolMantissa);

                ImGui::TableNextColumn();

                ImGui::Text("=");

                // Sign.
                ImGui::TableNextColumn();

                // This has the effect of dimming the color of the numbers so user doesn't try
                // to interact with them.
                ImVec4 textColor =  ImGui::GetStyleColorVec4(ImGuiCol_Text);
                ImGui::BeginDisabled();
                ImGui::PushStyleColor(ImGuiCol_Text, textColor);

                ImGui::Indent(10_scaled);
                ImGui::TableSetBgColor(ImGuiTableBgTarget_CellBg, signColorU32);
                if (ieee754.signBits == 1)
                    ImGui::Text("-1");
                else
                    ImGui::Text("+1");
                ImGui::Unindent(10_scaled);

                // Times.
                ImGui::TableNextColumn();
                ImGui::Text("x");
                ImGui::TableNextColumn();

                // Exponent.
                ImGui::TableSetBgColor(ImGuiTableBgTarget_CellBg, expColorU32);

                ImGui::Indent(20_scaled);
                if (ieee754.numberType == NumberType::NaN) {
                    if (ieee754.valueType == ValueType::QuietNaN)
                        ImGui::Text("qNaN");
                    else
                        ImGui::Text("sNaN");

                } else if (ieee754.numberType == NumberType::Infinity)
                    ImGui::Text("Inf");
                else if (ieee754.numberType == NumberType::Zero)
                    ImGui::Text("0");
                else if (ieee754.numberType == NumberType::Denormal)
                    ImGui::TextFormatted("2^{0}", 1 - ieee754.exponentBias);
                else
                    ImGui::TextFormatted("2^{0}", ieee754.exponentBits - ieee754.exponentBias);

                ImGui::Unindent(20_scaled);

                // Times.
                ImGui::TableNextColumn();
                ImGui::Text("x");
                ImGui::TableNextColumn();

                // Mantissa.
                ImGui::TableSetBgColor(ImGuiTableBgTarget_CellBg, mantColorU32);
                ImGui::Indent(20_scaled);
                ImGui::TextFormatted("{:.{}}", ieee754.mantissaValue,ieee754.precision);
                ImGui::Unindent(20_scaled);

                ImGui::PopStyleColor();
                ImGui::EndDisabled();
            };


            const static auto ToolMenu = [](i64 &inputFieldWidth) {
                // If precision and exponent match one of the IEEE 754 formats the format is highlighted
                // and remains highlighted until user changes to a different format. Matching formats occur when
                // the user clicks on one of the selections or if the slider values match the format in question.
                // When a new format is selected, it may have a smaller number of digits than
                // the previous selection. Since the largest of the hexadecimal and the decimal
                // representation widths set both field widths to the same value, we need to
                // reset it here when a new choice is set.

                auto exponentBitCount = ieee754statics.exponentBitCount;
                auto mantissaBitCount = ieee754statics.mantissaBitCount;
                if (ImGui::SliderInt("hex.builtin.tools.ieee754.exponent_size"_lang, &exponentBitCount, 1, 63 - mantissaBitCount)) {
                    inputFieldWidth = 0;
                    ieee754statics.exponentBitCount = exponentBitCount;
                }
                if (ImGui::SliderInt("hex.builtin.tools.ieee754.mantissa_size"_lang, &mantissaBitCount, 1, 63 - exponentBitCount)) {
                    inputFieldWidth = 0;
                    ieee754statics.mantissaBitCount = mantissaBitCount;
                }
                ImGui::Separator();

                auto color = ImGui::GetColorU32(ImGuiCol_ButtonActive);

                bool needsPop = false;
                if (ieee754statics.exponentBitCount == 5 && ieee754statics.mantissaBitCount == 10) {
                    ImGui::PushStyleColor(ImGuiCol_Button, color);
                    needsPop = true;
                }
                if (ImGui::Button("hex.builtin.tools.ieee754.half_precision"_lang)) {
                    ieee754statics.exponentBitCount = 5;
                    ieee754statics.mantissaBitCount = 10;
                    inputFieldWidth = 0;
                }
                if (needsPop) ImGui::PopStyleColor();

                ImGui::SameLine();

                needsPop = false;
                if (ieee754statics.exponentBitCount == 8 && ieee754statics.mantissaBitCount == 23) {
                    ImGui::PushStyleColor(ImGuiCol_Button, color);
                    needsPop = true;
                }
                if (ImGui::Button("hex.builtin.tools.ieee754.single_precision"_lang)) {
                    ieee754statics.exponentBitCount = 8;
                    ieee754statics.mantissaBitCount = 23;
                    inputFieldWidth = 0;
                }
                if (needsPop) ImGui::PopStyleColor();

                ImGui::SameLine();

                needsPop = false;
                if (ieee754statics.exponentBitCount == 11 && ieee754statics.mantissaBitCount == 52) {
                    ImGui::PushStyleColor(ImGuiCol_Button, color);
                    needsPop = true;
                }
                if (ImGui::Button("hex.builtin.tools.ieee754.double_precision"_lang)) {
                    ieee754statics.exponentBitCount = 11;
                    ieee754statics.mantissaBitCount = 52;
                    inputFieldWidth = 0;
                }
                if (needsPop) ImGui::PopStyleColor();

                ImGui::SameLine();

                needsPop = false;
                if (ImGui::Button("hex.builtin.tools.ieee754.clear"_lang))
                    // This will reset all interactive widgets to zero.
                    ieee754statics.value = 0;

                ImGui::Separator();

                ImGui::NewLine();
            };

            if (ImGui::BeginTable("##outer", 7, tableFlags, ImVec2(0, ImGui::GetTextLineHeightWithSpacing() * 5.5 ))) {
                ImGui::TableSetupColumn("hex.builtin.tools.ieee754.result.title"_lang);
                ImGui::TableSetupColumn("##equals");
                ImGui::TableSetupColumn("hex.builtin.tools.ieee754.sign"_lang);
                ImGui::TableSetupColumn("##times");
                ImGui::TableSetupColumn("hex.builtin.tools.ieee754.exponent"_lang);
                ImGui::TableSetupColumn("##times");
                ImGui::TableSetupColumn("hex.builtin.tools.ieee754.mantissa"_lang);
                ImGui::TableHeadersRow();
                ImGui::TableNextRow();

                FormatBitLabels(totalBitCount, exponentBitPosition, mantissaBitPosition);


                ImGui::TableNextRow();
                // Row for bit checkboxes
                // Result.
                ImGui::TableNextColumn();

                u64 mask = hex::bitmask(totalBitCount+1);
                std::string maskString = hex::format("0x{:X}  ", mask);

                auto style = ImGui::GetStyle();
                inputFieldWidth = std::fmax(inputFieldWidth,
                                            ImGui::CalcTextSize(maskString.c_str()).x + style.FramePadding.x * 2.0f);
                ImGui::PushItemWidth(inputFieldWidth);

                u64 newValue = ieee754statics.value & mask;
                if (ImGui::InputHexadecimal("##hex", &newValue, flags))
                    ieee754statics.value = newValue;
                ImGui::PopItemWidth();

                // Equals.
                ImGui::TableNextColumn();
                ImGui::Text("=");

                FormatBits(signBitPosition, exponentBitPosition, mantissaBitPosition);


                ImGui::TableNextRow();
                ImGui::TableNextColumn();

                ieee754.exponentBias = (u128(1) << (ieee754statics.exponentBitCount - 1)) - 1;

                ieee754.signValue = ieee754.signBits == 0 ? 1.0 : -1.0;

                BitsToFloat(ieee754);

                if (ieee754.numberType == NumberType::Denormal)
                    ieee754.precision = std::ceil(1+ieee754statics.mantissaBitCount * std::log10(2.0L));
                else
                    ieee754.precision = std::ceil(1+(ieee754statics.mantissaBitCount + 1) * std::log10(2.0L));

                // For C++ from_chars is better than strtold.
                // The main problem is that from_chars will not process special numbers
                // like inf and nan, so we handle them manually.
                static std::string decimalFloatingPointNumberString;

                // Use qnan for quiet NaN and snan for signaling NaN.
                if (ieee754.numberType == NumberType::NaN) {
                    if (ieee754.valueType == ValueType::QuietNaN)
                        decimalFloatingPointNumberString = "qnan";
                    else
                        decimalFloatingPointNumberString = "snan";
                } else
                    decimalFloatingPointNumberString = fmt::format("{:.{}}", ieee754statics.resultFloat, ieee754.precision);

                auto style1 = ImGui::GetStyle();
                inputFieldWidth = std::fmax(inputFieldWidth, ImGui::CalcTextSize(decimalFloatingPointNumberString.c_str()).x + 2 * style1.FramePadding.x);
                ImGui::PushItemWidth(inputFieldWidth);


                // We allow any input in order to accept infinities and NaNs, all invalid entries
                // are detected catching exceptions. You can also enter -0 or -inf.
                if (ImGui::InputText("##resultFloat", decimalFloatingPointNumberString, flags)) {
                    FloatToBits(ieee754, decimalFloatingPointNumberString, totalBitCount);
                }
                ImGui::PopItemWidth();

                if (displayMode == 0)
                    DisplayDecimal(ieee754);

                ImGui::EndTable();

            }

            ToolMenu(inputFieldWidth);
        }


        void drawInvariantMultiplicationDecoder() {
            static u64 divisor = 1;
            static u64 multiplier = 1;
            static u64 numBits = 32;

            ImGui::TextFormattedWrapped("{}", "hex.builtin.tools.invariant_multiplication.description"_lang);

            ImGui::NewLine();

            if (ImGui::BeginChild("##calculator", ImVec2(0, ImGui::GetTextLineHeightWithSpacing() * 5), true)) {
                constexpr static u64 min = 1, max = 64;
                ImGui::SliderScalar("hex.builtin.tools.invariant_multiplication.num_bits"_lang, ImGuiDataType_U64, &numBits, &min, &max);
                ImGui::NewLine();

                ImGui::PushStyleVar(ImGuiStyleVar_FramePadding, ImVec2(0, 0));
                ImGui::PushStyleColor(ImGuiCol_ChildBg, ImGui::GetStyleColorVec4(ImGuiCol_TableRowBgAlt));
                if (ImGui::BeginChild("##calculator", ImVec2(0, ImGui::GetTextLineHeightWithSpacing() + 12_scaled), true)) {
                    ImGui::PushItemWidth(100_scaled);

                    ImGui::TextUnformatted("X /");
                    ImGui::SameLine();
                    if (ImGui::InputScalar("##divisor", ImGuiDataType_U64, &divisor)) {
                        if (divisor == 0)
                            divisor = 1;

                        multiplier = ((1LLU << (numBits + 1)) / divisor) + 1;
                    }

                    ImGui::SameLine();

                    ImGui::TextUnformatted(" <=> ");

                    ImGui::SameLine();
                    ImGui::TextUnformatted("( X *");
                    ImGui::SameLine();
                    if (ImGui::InputHexadecimal("##multiplier", &multiplier)) {
                        if (multiplier == 0)
                            multiplier = 1;
                        divisor = ((1LLU << (numBits + 1)) / multiplier) + 1;
                    }

                    ImGui::SameLine();
                    ImGui::TextFormatted(") >> {}", numBits + 1);

                    ImGui::PopItemWidth();
                }
                ImGui::EndChild();
                ImGui::PopStyleColor();

                ImGui::PopStyleVar();
            }
            ImGui::EndChild();
        }

        void drawTCPClientServer() {
            if (ImGui::BeginTabBar("##tcpTransceiver", ImGuiTabBarFlags_None)) {
                if (ImGui::BeginTabItem("hex.builtin.tools.tcp_client_server.client"_lang)) {
                    static wolv::net::SocketClient client;

                    static std::string ipAddress;
                    static int port;

                    static std::vector<std::string> messages;
                    static std::string input;
                    static std::jthread receiverThread;
                    static std::mutex receiverMutex;

                    ImGui::Header("hex.builtin.tools.tcp_client_server.settings"_lang, true);

                    ImGui::BeginDisabled(client.isConnected());
                    {
                        ImGui::PushItemWidth(ImGui::GetContentRegionAvail().x * 0.3F);
                        ImGui::InputText("##ipAddress", ipAddress);
                        ImGui::PopItemWidth();
                        ImGui::SameLine(0, 0);
                        ImGui::TextUnformatted(":");
                        ImGui::SameLine(0, 0);
                        ImGui::PushItemWidth(ImGui::GetContentRegionAvail().x * 0.2F);
                        ImGui::InputInt("##port", &port, 0, 0);
                        ImGui::PopItemWidth();
                    }
                    ImGui::EndDisabled();

                    ImGui::SameLine();

                    ImGui::PushItemWidth(ImGui::GetContentRegionAvail().x * 0.2F);
                    if (client.isConnected()) {
                        if (ImGui::IconButton(ICON_VS_DEBUG_DISCONNECT, ImGui::GetCustomColorVec4(ImGuiCustomCol_ToolbarRed))) {
                            client.disconnect();

                            receiverThread.request_stop();
                            receiverThread.join();
                        }
                    } else {
                        if (ImGui::IconButton(ICON_VS_PLAY, ImGui::GetCustomColorVec4(ImGuiCustomCol_ToolbarGreen))) {
                            client.connect(ipAddress, port);

                            receiverThread = std::jthread([](const std::stop_token& stopToken) {
                                while (!stopToken.stop_requested()) {
                                    auto message = client.readString();
                                    if (!message.empty()) {
                                        std::scoped_lock lock(receiverMutex);
                                        messages.push_back(message);
                                    }
                                }
                            });
                        }
                    }
                    ImGui::PopItemWidth();

                    if (port < 1)
                        port = 1;
                    else if (port > 65535)
                        port = 65535;

                    ImGui::Header("hex.builtin.tools.tcp_client_server.messages"_lang);
                    if (ImGui::BeginTable("##response", 1, ImGuiTableFlags_ScrollY | ImGuiTableFlags_RowBg | ImGuiTableFlags_Borders, ImVec2(0, 200_scaled))) {
                        {
                            std::scoped_lock lock(receiverMutex);
                            for (const auto &message : messages) {
                                ImGui::TableNextRow();
                                ImGui::TableNextColumn();
                                ImGui::TextFormattedSelectable("{}", message.c_str());
                            }
                        }

                        ImGui::EndTable();
                    }

                    ImGui::BeginDisabled(!client.isConnected());
                    {
                        ImGui::PushItemWidth(-(50_scaled));
                        bool pressedEnter = ImGui::InputText("##input", input, ImGuiInputTextFlags_EnterReturnsTrue);
                        ImGui::PopItemWidth();
                        ImGui::SameLine();

                        if (pressedEnter)
                            ImGui::SetKeyboardFocusHere(-1);

                        if (ImGui::IconButton(ICON_VS_DEBUG_STACKFRAME, ImGui::GetStyleColorVec4(ImGuiCol_Text)) || pressedEnter) {
                            client.writeString(input);
                            input.clear();
                        }
                    }
                    ImGui::EndDisabled();

                    ImGui::EndTabItem();
                }

                if (ImGui::BeginTabItem("hex.builtin.tools.tcp_client_server.server"_lang)) {
                    static wolv::net::SocketServer server;
                    static int port;

                    static std::vector<std::string> messages;
                    static std::mutex receiverMutex;
                    static std::jthread receiverThread;

                    ImGui::Header("hex.builtin.tools.tcp_client_server.settings"_lang, true);

                    ImGui::BeginDisabled(server.isActive());
                    {
                        ImGui::PushItemWidth(ImGui::GetContentRegionAvail().x * 0.2F);
                        ImGui::InputInt("##port", &port, 0, 0);
                        ImGui::PopItemWidth();
                    }
                    ImGui::EndDisabled();

                    ImGui::SameLine();

                    if (port < 1)
                        port = 1;
                    else if (port > 65535)
                        port = 65535;

                    ImGui::PushItemWidth(ImGui::GetContentRegionAvail().x * 0.2F);
                    if (server.isActive()) {
                        if (ImGui::IconButton(ICON_VS_DEBUG_DISCONNECT, ImGui::GetCustomColorVec4(ImGuiCustomCol_ToolbarRed))) {
                            server.shutdown();

                            receiverThread.request_stop();
                            receiverThread.join();
                        }
                    } else {
                        if (ImGui::IconButton(ICON_VS_PLAY, ImGui::GetCustomColorVec4(ImGuiCustomCol_ToolbarGreen))) {
                            receiverThread = std::jthread([](const std::stop_token& stopToken){
                                server = wolv::net::SocketServer(port);

                                while (!stopToken.stop_requested()) {
                                    server.accept([](wolv::net::SocketHandle, const std::vector<u8> &data) -> std::vector<u8> {
                                        std::scoped_lock lock(receiverMutex);

                                        messages.emplace_back(data.begin(), data.end());

                                        return {};
                                    }, nullptr, true);

                                    std::this_thread::sleep_for(100ms);
                                }
                            });
                        }
                    }
                    ImGui::PopItemWidth();

                    ImGui::Header("hex.builtin.tools.tcp_client_server.messages"_lang);

                    if (ImGui::BeginTable("##response", 1, ImGuiTableFlags_ScrollY | ImGuiTableFlags_RowBg | ImGuiTableFlags_Borders, ImVec2(0, 200_scaled))) {
                        {
                            std::scoped_lock lock(receiverMutex);
                            u32 index = 0;
                            for (const auto &message : messages) {
                                ImGui::TableNextRow();
                                ImGui::TableNextColumn();
                                ImGui::PushID(index);
                                ImGui::TextFormattedSelectable("{}", message.c_str());
                                ImGui::PopID();

                                index += 1;
                            }
                        }

                        ImGui::EndTable();
                    }

                    ImGui::EndTabItem();
                }

                ImGui::EndTabBar();
            }
        }


        void drawEuclidianAlgorithm() {
            static u64 a, b;

            static i64 gcdResult = 0;
            static i64 lcmResult = 0;
            static i64 p = 0, q = 0;
            static bool overflow = false;

            constexpr static auto extendedGcd = []<typename T>(T a, T b) -> std::pair<T, T> {
                T x = 1, y = 0;

                T xLast = 0, yLast = 1;

                while (b > 0) {
                    T quotient = a / b;

                    std::tie(x, xLast)  = std::tuple { xLast, x - quotient * xLast };
                    std::tie(y, yLast)  = std::tuple { yLast, y - quotient * yLast };
                    std::tie(a, b)      = std::tuple { b, a - quotient * b };
                }

                return { x, y };
            };

            ImGui::TextFormattedWrapped("{}", "hex.builtin.tools.euclidean_algorithm.description"_lang);

            ImGui::NewLine();

            if (ImGui::BeginBox()) {
                bool hasChanged = false;
                hasChanged = ImGui::InputScalar("A", ImGuiDataType_U64, &a) || hasChanged;
                hasChanged = ImGui::InputScalar("B", ImGuiDataType_U64, &b) || hasChanged;

                // Update results when input changed
                if (hasChanged) {

                    // Detect overflow
                    const u64 multiplicationResult = a * b;
                    if (a != 0 && multiplicationResult / a != b) {
                        gcdResult = 0;
                        lcmResult = 0;
                        p = 0;
                        q = 0;

                        overflow = true;
                    } else {
                        gcdResult       = std::gcd<i128, i128>(a, b);
                        lcmResult       = std::lcm<i128, i128>(a, b);
                        std::tie(p, q)  = extendedGcd(a, b);

                        overflow = false;
                    }
                }

                ImGui::Separator();

                ImGui::PushStyleVar(ImGuiStyleVar_Alpha, ImGui::GetStyle().DisabledAlpha);
                ImGui::InputScalar("gcd(A, B)", ImGuiDataType_S64, &gcdResult, nullptr, nullptr, "%llu", ImGuiInputTextFlags_ReadOnly);

                ImGui::Indent();
                ImGui::TextFormatted(ICON_VS_ARROW_RIGHT " a \u00D7 p  +  b \u00D7 q  =  ({0}) \u00D7 ({1})  +  ({2}) \u00D7 ({3})", a, p, b, q);
                ImGui::Unindent();

                ImGui::InputScalar("lcm(A, B)", ImGuiDataType_S64, &lcmResult, nullptr, nullptr, "%llu", ImGuiInputTextFlags_ReadOnly);
                ImGui::PopStyleVar();

                ImGui::EndBox();
            }

            if (overflow)
                ImGui::TextFormattedColored(ImGui::GetCustomColorVec4(ImGuiCustomCol_ToolbarRed), "{}", "hex.builtin.tools.euclidean_algorithm.overflow"_lang);
            else
                ImGui::NewLine();

        }
    }

    void registerToolEntries() {
        ContentRegistry::Tools::add("hex.builtin.tools.demangler", drawDemangler);
        ContentRegistry::Tools::add("hex.builtin.tools.ascii_table", drawASCIITable);
        ContentRegistry::Tools::add("hex.builtin.tools.regex_replacer", drawRegexReplacer);
        ContentRegistry::Tools::add("hex.builtin.tools.color", drawColorPicker);
        ContentRegistry::Tools::add("hex.builtin.tools.calc", drawMathEvaluator);
        ContentRegistry::Tools::add("hex.builtin.tools.graphing", drawGraphingCalculator);
        ContentRegistry::Tools::add("hex.builtin.tools.base_converter", drawBaseConverter);
        ContentRegistry::Tools::add("hex.builtin.tools.byte_swapper", drawByteSwapper);
        ContentRegistry::Tools::add("hex.builtin.tools.permissions", drawPermissionsCalculator);
        // ContentRegistry::Tools::add("hex.builtin.tools.file_uploader", drawFileUploader);
        ContentRegistry::Tools::add("hex.builtin.tools.wiki_explain", drawWikiExplainer);
        ContentRegistry::Tools::add("hex.builtin.tools.file_tools", drawFileTools);
        ContentRegistry::Tools::add("hex.builtin.tools.ieee754", drawIEEE754Decoder);
        ContentRegistry::Tools::add("hex.builtin.tools.invariant_multiplication", drawInvariantMultiplicationDecoder);
        ContentRegistry::Tools::add("hex.builtin.tools.tcp_client_server", drawTCPClientServer);
        ContentRegistry::Tools::add("hex.builtin.tools.euclidean_algorithm", drawEuclidianAlgorithm);
    }

}