#include <hex/views/view.hpp>

#include <imgui.h>

#include <functional>
#include <string>
#include <vector>

#include <hex/helpers/shared_data.hpp>

namespace hex {

    View::View(std::string unlocalizedName) : m_unlocalizedViewName(unlocalizedName) { }

    void View::drawMenu() { }

    bool View::isAvailable() const {
        return ImHexApi::Provider::isValid() && ImHexApi::Provider::get()->isAvailable();
    }

    std::vector<std::function<void()>>& View::getDeferedCalls() {
        return SharedData::deferredCalls;
    }

    void View::drawCommonInterfaces() {
        ImGui::SetNextWindowSizeConstraints(scaled(ImVec2(400, 100)), scaled(ImVec2(600, 300)));
        if (ImGui::BeginPopupModal("hex.common.info"_lang, nullptr, ImGuiWindowFlags_AlwaysAutoResize)) {
            ImGui::TextWrapped("%s", SharedData::popupMessage.c_str());
            ImGui::NewLine();
            ImGui::Separator();
            if (ImGui::Button("hex.common.okay"_lang) || ImGui::IsKeyDown(ImGuiKey_Escape))
                ImGui::CloseCurrentPopup();

            ImGui::SetWindowPos((SharedData::windowSize - ImGui::GetWindowSize()) / 2, ImGuiCond_Appearing);
            ImGui::EndPopup();
        }

        ImGui::SetNextWindowSizeConstraints(scaled(ImVec2(400, 100)), scaled(ImVec2(600, 300)));
        if (ImGui::BeginPopupModal("hex.common.error"_lang, nullptr, ImGuiWindowFlags_AlwaysAutoResize)) {
            ImGui::TextWrapped("%s", SharedData::popupMessage.c_str());
            ImGui::NewLine();
            ImGui::Separator();
            if (ImGui::Button("hex.common.okay"_lang) || ImGui::IsKeyDown(ImGuiKey_Escape))
                ImGui::CloseCurrentPopup();

            ImGui::SetWindowPos((SharedData::windowSize - ImGui::GetWindowSize()) / 2, ImGuiCond_Appearing);
            ImGui::EndPopup();
        }

        ImGui::SetNextWindowSizeConstraints(scaled(ImVec2(400, 100)), scaled(ImVec2(600, 300)));
        if (ImGui::BeginPopupModal("hex.common.fatal"_lang, nullptr, ImGuiWindowFlags_AlwaysAutoResize)) {
            ImGui::TextWrapped("%s", SharedData::popupMessage.c_str());
            ImGui::NewLine();
            ImGui::Separator();
            if (ImGui::Button("hex.common.okay"_lang) || ImGui::IsKeyDown(ImGuiKey_Escape)) {
                ImHexApi::Common::closeImHex();
                ImGui::CloseCurrentPopup();
            }

            ImGui::SetWindowPos((SharedData::windowSize - ImGui::GetWindowSize()) / 2, ImGuiCond_Appearing);
            ImGui::EndPopup();
        }
    }

    void View::showMessagePopup(const std::string &message) {
        SharedData::popupMessage = message;

        View::doLater([] { ImGui::OpenPopup("hex.common.info"_lang); });
    }

    void View::showErrorPopup(const std::string &errorMessage) {
        SharedData::popupMessage = errorMessage;

        View::doLater([] { ImGui::OpenPopup("hex.common.error"_lang); });
    }

    void View::showFatalPopup(const std::string &errorMessage) {
        SharedData::popupMessage = errorMessage;

        View::doLater([] { ImGui::OpenPopup("hex.common.fatal"_lang); });
    }

    bool View::hasViewMenuItemEntry() const {
        return true;
    }

    ImVec2 View::getMinSize() const {
        return scaled(ImVec2(480, 720));
    }

    ImVec2 View::getMaxSize() const {
        return { FLT_MAX, FLT_MAX };
    }


    bool& View::getWindowOpenState() {
        return this->m_windowOpen;
    }

    const bool& View::getWindowOpenState() const {
        return this->m_windowOpen;
    }

    const std::string& View::getUnlocalizedName() const {
        return this->m_unlocalizedViewName;
    }

    void View::discardNavigationRequests() {
        if (ImGui::IsWindowFocused(ImGuiFocusedFlags_ChildWindows))
            ImGui::GetIO().ConfigFlags &= ~ImGuiConfigFlags_NavEnableKeyboard;
    }

    void View::doLater(std::function<void()> &&function) {
        SharedData::deferredCalls.push_back(function);
    }

    void View::confirmButtons(const std::string &textLeft, const std::string &textRight, const std::function<void()> &leftButtonFn, const std::function<void()> &rightButtonFn) {
        auto width = ImGui::GetWindowWidth();
        ImGui::SetCursorPosX(width / 9);
        if (ImGui::Button(textLeft.c_str(), ImVec2(width / 3, 0)))
            leftButtonFn();
        ImGui::SameLine();
        ImGui::SetCursorPosX(width / 9 * 5);
        if (ImGui::Button(textRight.c_str(), ImVec2(width / 3, 0)))
            rightButtonFn();
    }

}