#pragma once

#include <hex.hpp>

#include <functional>
#include <string>

#define IMGUI_DEFINE_MATH_OPERATORS
#include <imgui.h>
#include <imgui_internal.h>

#include <hex/helpers/fmt.hpp>

enum ImGuiCustomCol {
    ImGuiCustomCol_DescButton,
    ImGuiCustomCol_DescButtonHovered,
    ImGuiCustomCol_DescButtonActive,

    ImGuiCustomCol_ToolbarGray,
    ImGuiCustomCol_ToolbarRed,
    ImGuiCustomCol_ToolbarYellow,
    ImGuiCustomCol_ToolbarGreen,
    ImGuiCustomCol_ToolbarBlue,
    ImGuiCustomCol_ToolbarPurple,
    ImGuiCustomCol_ToolbarBrown,

    ImGuiCustomCol_Highlight,

    ImGuiCustomCol_COUNT
};

namespace ImGui {

    struct Texture {
        ImTextureID textureId = nullptr;
        int width = 0, height = 0;

        [[nodiscard]] constexpr bool valid() const noexcept {
            return this->textureId != nullptr;
        }

        [[nodiscard]] constexpr operator ImTextureID() {
            return this->textureId;
        }

        [[nodiscard]] auto size() const noexcept {
            return ImVec2(this->width, this->height);
        }

        [[nodiscard]] constexpr auto aspectRatio() const noexcept {
            if (this->height == 0) return 1.0F;

            return float(this->width) / float(this->height);
        }
    };

    int UpdateStringSizeCallback(ImGuiInputTextCallbackData *data);

    bool IconHyperlink(const char *icon, const char *label, const ImVec2 &size_arg = ImVec2(0, 0), ImGuiButtonFlags flags = 0);
    bool Hyperlink(const char *label, const ImVec2 &size_arg = ImVec2(0, 0), ImGuiButtonFlags flags = 0);
    bool BulletHyperlink(const char *label, const ImVec2 &size_arg = ImVec2(0, 0), ImGuiButtonFlags flags = 0);
    bool DescriptionButton(const char *label, const char *description, const ImVec2 &size_arg = ImVec2(0, 0), ImGuiButtonFlags flags = 0);

    void UnderlinedText(const char *label, ImColor color = ImGui::GetStyleColorVec4(ImGuiCol_Text), const ImVec2 &size_arg = ImVec2(0, 0));

    void TextSpinner(const char *label);

    void Header(const char *label, bool firstEntry = false);
    void HeaderColored(const char *label, ImColor color, bool firstEntry);

    void InfoTooltip(const char *text);

    bool TitleBarButton(const char *label, ImVec2 size_arg);
    bool ToolBarButton(const char *symbol, ImVec4 color);
    bool IconButton(const char *symbol, ImVec4 color, ImVec2 size_arg = ImVec2(0, 0));

    bool InputIntegerPrefix(const char* label, const char *prefix, void *value, ImGuiDataType type, ImGuiInputTextFlags flags = ImGuiInputTextFlags_None);
    bool InputHexadecimal(const char* label, u32 *value, ImGuiInputTextFlags flags = ImGuiInputTextFlags_None);
    bool InputHexadecimal(const char* label, u64 *value, ImGuiInputTextFlags flags = ImGuiInputTextFlags_None);

    inline bool HasSecondPassed() {
        return static_cast<ImU32>(ImGui::GetTime() * 100) % 100 <= static_cast<ImU32>(ImGui::GetIO().DeltaTime * 100);
    }

    Texture LoadImageFromPath(const char *path);
    Texture LoadImageFromMemory(const ImU8 *buffer, int size);
    void UnloadImage(Texture &texture);

    void OpenPopupInWindow(const char *window_name, const char *popup_name);

    struct ImHexCustomData {
        ImVec4 Colors[ImGuiCustomCol_COUNT];
    };

    ImU32 GetCustomColorU32(ImGuiCustomCol idx, float alpha_mul = 1.0F);
    ImVec4 GetCustomColorVec4(ImGuiCustomCol idx, float alpha_mul = 1.0F);

    void StyleCustomColorsDark();
    void StyleCustomColorsLight();
    void StyleCustomColorsClassic();

    void SmallProgressBar(float fraction, float yOffset = 0.0F);

    void TextFormatted(const std::string &fmt, auto &&...args) {
        ImGui::TextUnformatted(hex::format(fmt, std::forward<decltype(args)>(args)...).c_str());
    }

    void TextFormattedColored(ImColor color, const std::string &fmt, auto &&...args) {
        ImGui::TextColored(color, "%s", hex::format(fmt, std::forward<decltype(args)>(args)...).c_str());
    }

    void TextFormattedDisabled(const std::string &fmt, auto &&...args) {
        ImGui::TextDisabled("%s", hex::format(fmt, std::forward<decltype(args)>(args)...).c_str());
    }

    void TextFormattedWrapped(const std::string &fmt, auto &&...args) {
        ImGui::TextWrapped("%s", hex::format(fmt, std::forward<decltype(args)>(args)...).c_str());
    }

    void TextFormattedCentered(const std::string &fmt, auto &&...args) {
        auto text = hex::format(fmt, std::forward<decltype(args)>(args)...);
        auto availableSpace = ImGui::GetContentRegionAvail();
        auto textSize = ImGui::CalcTextSize(text.c_str(), nullptr, false, availableSpace.x * 0.75F);

        ImGui::SetCursorPos(((availableSpace - textSize) / 2.0F));

        ImGui::PushTextWrapPos(availableSpace.x * 0.75F);
        ImGui::TextFormattedWrapped("{}", text);
        ImGui::PopTextWrapPos();
    }

    bool InputText(const char* label, std::string &buffer, ImGuiInputTextFlags flags = ImGuiInputTextFlags_None);
    bool InputText(const char *label, std::u8string &buffer, ImGuiInputTextFlags flags = ImGuiInputTextFlags_None);
    bool InputTextMultiline(const char* label, std::string &buffer, const ImVec2& size = ImVec2(0, 0), ImGuiInputTextFlags flags = ImGuiInputTextFlags_None);

    bool InputScalarCallback(const char* label, ImGuiDataType data_type, void* p_data, const char* format, ImGuiInputTextFlags flags, ImGuiInputTextCallback callback, void* user_data);

    void HideTooltip();

    bool BitCheckbox(const char* label, bool* v);
}