/*****************************************************************************************
 *                                                                                       *
 * OpenSpace                                                                             *
 *                                                                                       *
 * Copyright (c) 2014-2023                                                               *
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 ****************************************************************************************/

#include <modules/spacecraftinstruments/dashboard/dashboarditeminstruments.h>

#include <modules/spacecraftinstruments/util/imagesequencer.h>
#include <openspace/documentation/documentation.h>
#include <openspace/documentation/verifier.h>
#include <openspace/engine/globals.h>
#include <openspace/rendering/renderengine.h>
#include <openspace/util/spicemanager.h>
#include <openspace/util/timeconversion.h>
#include <openspace/util/timemanager.h>
#include <ghoul/font/font.h>
#include <ghoul/font/fontmanager.h>
#include <ghoul/font/fontrenderer.h>
#include <ghoul/misc/profiling.h>
#include <chrono>

namespace {
    constexpr openspace::properties::Property::PropertyInfo ActiveColorInfo = {
        "ActiveColor",
        "Active Color",
        "This value determines the color that the active instrument is rendered in. "
        "Shortly after activation, the used color is mixture of this and the flash "
        "color. The default value is (0.6, 1.0, 0.0)",
        // @VISIBILITY(2.5)
        openspace::properties::Property::Visibility::User
    };

    constexpr openspace::properties::Property::PropertyInfo FlashColorInfo = {
        "FlashColor",
        "Flash Color",
        "This value determines the color that is used shortly after an instrument "
        "activation. The default value is (0.9, 1.0, 0.75)",
        // @VISIBILITY(2.5)
        openspace::properties::Property::Visibility::User
    };

    std::string progressToStr(int size, double t) {
        std::string progress = "|";
        const int g = std::max(0, static_cast<int>((t * (size - 1)) + 1));
        for (int i = 0; i < g; i++) {
            progress.append("-");
        }
        progress.append(">");
        for (int i = 0; i < size - g; i++) {
            progress.append(" ");
        }
        progress.append("|");
        return progress;
    }

    glm::vec2 addToBoundingbox(glm::vec2 lhs, glm::vec2 rhs) {
        return { std::max(lhs.x, rhs.x), lhs.y + rhs.y };
    }

    struct [[codegen::Dictionary(DashboardItemInstruments)]] Parameters {
        // [[codegen::verbatim(ActiveColorInfo.description)]]
        std::optional<glm::vec3> activeColor [[codegen::color()]];

        // [[codegen::verbatim(FlashColorInfo.description)]]
        std::optional<glm::vec3> flashColor [[codegen::color()]];
    };
#include "dashboarditeminstruments_codegen.cpp"
} // namespace

namespace openspace {

documentation::Documentation DashboardItemInstruments::Documentation() {
    return codegen::doc<Parameters>(
        "spacecraftinstruments_dashboarditem_instuments",
        DashboardTextItem::Documentation()
    );
}

DashboardItemInstruments::DashboardItemInstruments(const ghoul::Dictionary& dictionary)
    : DashboardTextItem(dictionary)
    , _activeColor(
        ActiveColorInfo,
        glm::vec3(0.6f, 1.f, 0.f),
        glm::vec3(0.f),
        glm::vec3(1.f)
    )
    , _activeFlash(FlashColorInfo,
        glm::vec3(0.9f, 1.f, 0.75f),
        glm::vec3(0.f),
        glm::vec3(1.f)
    )
{
    const Parameters p = codegen::bake<Parameters>(dictionary);

    _activeColor.setViewOption(properties::Property::ViewOptions::Color);
    _activeColor = p.activeColor.value_or(_activeColor);
    addProperty(_activeColor);
    _activeFlash.setViewOption(properties::Property::ViewOptions::Color);
    _activeFlash = p.flashColor.value_or(_activeFlash);
    addProperty(_activeFlash);
}

void DashboardItemInstruments::render(glm::vec2& penPosition) {
    ZoneScoped;

    double currentTime = global::timeManager->time().j2000Seconds();

    if (!ImageSequencer::ref().isReady()) {
        return;
    }
    ImageSequencer& sequencer = ImageSequencer::ref();

    penPosition.y -= 25.f;

    constexpr glm::vec4 targetColor(0.f, 0.75f, 1.f, 1.f);

    double previous = sequencer.prevCaptureTime(currentTime);
    double next = sequencer.nextCaptureTime(currentTime);
    double remaining = next - currentTime;
    float t = static_cast<float>(1.0 - remaining / (next - previous));
    t = std::clamp(t, 0.f, 1.f);

    if (remaining > 0.0) {
        RenderFont(
            *_font,
            penPosition,
            "Next instrument activity:",
            glm::vec4(glm::mix(_activeColor.value(), _activeFlash.value(), t), 1.f),
            ghoul::fontrendering::CrDirection::Down
        );

        std::pair<double, std::string_view> remainingConv = simplifyTime(remaining);

        // If the remaining time is below 5 minutes, we switch over to seconds display
        if (remaining < 5 * 60) {
            remainingConv = std::pair(remaining, "seconds");
        }

        const int Size = 25;
        int p = std::max(static_cast<int>((t * (Size - 1)) + 1), 0);
        RenderFont(
            *_font,
            penPosition,
            fmt::format(
                "{:4.0f} {:s} |{:s}>{:s}| {:.1f} %",
                remainingConv.first,
                remainingConv.second,
                std::string(p, '-'),
                std::string(Size - p, ' '),
                t * 100
            ),
            glm::vec4(glm::mix(_activeColor.value(), _activeFlash.value(), t), 1.f),
            ghoul::fontrendering::CrDirection::Down
        );

        std::string str = SpiceManager::ref().dateFromEphemerisTime(
            sequencer.nextCaptureTime(global::timeManager->time().j2000Seconds()),
            "YYYY MON DD HR:MN:SC"
        );

        RenderFont(
            *_font,
            penPosition,
            fmt::format("Data acquisition time: {}", str),
            glm::vec4(_activeColor.value(), 1.f),
            ghoul::fontrendering::CrDirection::Down
        );
    }
    const std::pair<double, std::string>& nextTarget = sequencer.nextTarget(currentTime);
    const std::pair<double, std::string>& currentTarget =
        sequencer.currentTarget(currentTime);

    if (currentTarget.first <= 0.0) {
        return;
    }
    using namespace std::chrono;
    seconds tls = seconds(static_cast<int>(nextTarget.first - currentTime));

    const hours tlh = duration_cast<hours>(tls);
    tls -= tlh;
    const minutes tlm = duration_cast<minutes>(tls);
    tls -= tlm;

    RenderFont(
        *_font,
        penPosition,
        fmt::format(
            "Next image: [{:02d}:{:02d}:{:02d}]", tlh.count(), tlm.count(), tls.count()
        ),
        targetColor,
        ghoul::fontrendering::CrDirection::Down
    );

    penPosition.y -= _font->height();

    const std::vector<std::pair<std::string, bool>>& activeMap =
        sequencer.activeInstruments(currentTime);

    glm::vec4 firing = glm::vec4(0.58f - t, 1.f - t, 1.f - t, 1.f);

    RenderFont(
        *_font,
        penPosition,
        "Active Instruments:",
        glm::vec4(_activeColor.value(), 1.f),
        ghoul::fontrendering::CrDirection::Down
    );

    for (const std::pair<std::string, bool>& m : activeMap) {
        if (m.second) {
            RenderFont(*_font, penPosition, "|", glm::vec4(0.3f, 0.3f, 0.3f, 1.f));
            if (m.first == "NH_LORRI") {
                RenderFont(*_font, penPosition, " + ", firing);
            }
            RenderFont(*_font, penPosition, "  |", glm::vec4(0.3f, 0.3f, 0.3f, 1.f));
            RenderFont(*_font,
                penPosition,
                fmt::format("    {:5s}", m.first),
                glm::vec4(_activeColor.value(), 1.f),
                ghoul::fontrendering::CrDirection::Down
            );
        }
        else {
            RenderFont(*_font, penPosition, "| |", glm::vec4(0.3f, 0.3f, 0.3f, 1.f));
            RenderFont(
                *_font,
                penPosition,
                fmt::format("    {:5s}", m.first),
                glm::vec4(0.3f, 0.3f, 0.3f, 1.f),
                ghoul::fontrendering::CrDirection::Down
            );
        }
    }
}

glm::vec2 DashboardItemInstruments::size() const {
    glm::vec2 size = glm::vec2(0.f);
    double currentTime = global::timeManager->time().j2000Seconds();

    if (!ImageSequencer::ref().isReady()) {
        return glm::vec2(0.f);
    }
    ImageSequencer& sequencer = ImageSequencer::ref();

    double previous = sequencer.prevCaptureTime(currentTime);
    double next = sequencer.nextCaptureTime(currentTime);
    double remaining = sequencer.nextCaptureTime(currentTime) - currentTime;
    const float t = static_cast<float>(1.0 - remaining / (next - previous));

    const std::string& str = SpiceManager::ref().dateFromEphemerisTime(
        sequencer.nextCaptureTime(currentTime),
        "YYYY MON DD HR:MN:SC"
    );

    if (remaining > 0.0) {
        std::string progress = progressToStr(25, t);

        size = addToBoundingbox(size, _font->boundingBox("Next instrument activity:"));

        size = addToBoundingbox(
            size,
            _font->boundingBox(
                fmt::format("{:.0f} s {:s} {:.1f} %", remaining, progress, t * 100.f)
            )
        );

        size = addToBoundingbox(
            size,
            _font->boundingBox(fmt::format("Data acquisition time: {}", str))
        );
    }
    std::pair<double, std::string> nextTarget = sequencer.nextTarget(currentTime);
    std::pair<double, std::string> currentTarget = sequencer.currentTarget(currentTime);

    if (currentTarget.first <= 0.0) {
        return size;
    }

    const int timeleft = static_cast<int>(nextTarget.first - currentTime);

    const int hour = timeleft / 3600;
    int second = timeleft % 3600;
    const int minute = second / 60;
    second = second % 60;


    std::string hh;
    if (hour < 10) {
        hh = "0";
    }
    std::string mm;
    if (minute < 10) {
        mm = "0";
    }
    std::string ss;
    if (second < 10) {
        ss = "0";
    }

    hh.append(std::to_string(hour));
    mm.append(std::to_string(minute));
    ss.append(std::to_string(second));

    size = addToBoundingbox(
        size,
        _font->boundingBox(
            fmt::format("Data acquisition adjacency: [{}:{}:{}]", hh, mm, ss)
        )
    );

    size.y += _font->height();

    size = addToBoundingbox(size, _font->boundingBox("Active Instruments:"));
    return size;
}

} // namespace openspace