//
// Created by Krad on 2021/10/8.
//

#include "ScanFormWidget.h"
#include "ui_tabformwidget.h"

#include <QVBoxLayout>
#include <QToolButton>
#include <QButtonGroup>
#include <QPainter>
#include <QLabel>
#include <qdebug.h>

#include "forms/scan/PatientInformationForm.h"
#include "event/EventCenter.h"
#include "log/UserOperationLog.h"
#include "json/jsonobject.h"

#ifdef WIN32
#else
#include <cmath>
#endif

namespace{
    const size_t PREVIEW_ROW = 140;
    const size_t PREVIEW_COL = 140;
    const float PIXEL_SPACING = 1.5f;
    const float HALF_ROI_WIDTH = 100.0f;
}

ScanFormWidget::ScanFormWidget(QWidget* parent)
: TabFormWidget(parent)
, mPatInf(new PatientInformationForm(this))
, mLblProtocol(new QLabel(this))
, mBtnLeft(new QToolButton(this))
, mBtnRight(new QToolButton(this))
, mBtnRefresh(new QToolButton(this))
, mBtnPreview(new QToolButton(this))
, mBtnStop(new QToolButton(this))
, mBtnScan(new QToolButton(this))
, mViewer(new QLabel(this))
, mLblPreview(new QLabel(this))
, mLblE(new QLabel(this))
, mLblParams(new QLabel(this))
, mLblE2(new QLabel(this))
{

	auto layout = new QHBoxLayout(ui->commandWidget);
    initProtocolUI(layout);
    layout->addSpacerItem(new QSpacerItem(20, 20, QSizePolicy::Expanding));
    addVerticalLine(layout);
    initScanControlBar(layout);
    initScanContent();
    initEvents();

}

void ScanFormWidget::initProtocolUI(QHBoxLayout *layout) {
    mLblProtocol->setText(tr("Protocol"));
    mLblProtocol->setAlignment(Qt::AlignTop);
    mLblProtocol->setObjectName("protocolPanelTitle");
    layout->addWidget(mLblProtocol);
    addVerticalLine(layout);
    mBtnLeft->setObjectName("btnLeft");
    mBtnRight->setObjectName("btnRight");
    mBtnLeft->setText(tr("LEFT"));
    mBtnRight->setText(tr("RIGHT"));
    layout->addWidget(mBtnLeft);
    layout->addWidget(mBtnRight);

    auto group = new QButtonGroup(ui->commandWidget);
    mBtnLeft->setCheckable(true);
    mBtnLeft->setChecked(true);
    mBtnRight->setCheckable(true);
    group->addButton(mBtnRight, 1);
    group->addButton(mBtnLeft, 0);
    connect(group, SIGNAL(buttonClicked(int)), this, SLOT(protocolChanged(int)));
}

void ScanFormWidget::initScanContent() {
    auto contentLayout = new QHBoxLayout();
    ui->contentWidget->setLayout(contentLayout);

    contentLayout->addWidget(mPatInf);
    auto paramWidget = new QWidget(this);
    auto broadcastWidget = new QWidget(this);
    broadcastWidget->setObjectName("broadcastWidget");
    mViewer->setObjectName("viewer");
    mViewer->setFixedSize(800, 800);
    mViewer->setText("");
    auto viewerLayout = new QHBoxLayout(mViewer);
    broadcastWidget->setLayout(viewerLayout);
    viewerLayout->addWidget(mViewer);
    contentLayout->addWidget(broadcastWidget);
    paramWidget->setObjectName("paramWidget");
    auto paramLayout = new QVBoxLayout(paramWidget);
    mLblPreview->setText(tr("Preview Parameters"));
    mLblPreview->setObjectName("parameterTitle");
    paramLayout->addWidget(mLblPreview);
    mLblE->setWordWrap(true);
    mLblE->setObjectName("placeholder");
    mLblE->setText(tr("some settings\n\nparameters\n"));
    paramLayout->addWidget(mLblE);
    auto lbl_end = new QLabel(this);
    lbl_end->setObjectName("endSpaceLine");
    paramLayout->addWidget(lbl_end);
    mLblParams->setText(tr("Scan Parameters"));
    mLblParams->setObjectName("parameterTitle");
    paramLayout->addWidget(mLblParams);
    mLblE2->setWordWrap(true);
    mLblE2->setObjectName("placeholder");
    mLblE2->setText(tr("some settings\n\nparameters\n"));
    paramLayout->addWidget(mLblE2);
    auto lbl_end2 = new QLabel(this);
    lbl_end2->setObjectName("endSpaceLine");
    paramLayout->addWidget(lbl_end2);
    paramLayout->addSpacerItem(new QSpacerItem(20, 20, QSizePolicy::Minimum, QSizePolicy::Expanding));
    contentLayout->addWidget(paramWidget);
}

void ScanFormWidget::initScanControlBar(QHBoxLayout *layout){
    mBtnRefresh->setObjectName("btnRefresh");
    mBtnPreview->setObjectName("btnPreview");
    mBtnStop->setObjectName("btnStop");
    mBtnScan->setObjectName("btnScan");

    mBtnRefresh->setText(tr("Refresh"));
    mBtnPreview->setText(tr("Preview"));
    mBtnStop->setText(tr("Stop"));
    mBtnScan->setText(tr("Scan"));

    mBtnScan->setEnabled(false);
    mBtnRefresh->setEnabled(false);
    mBtnPreview->setEnabled(false);
    mBtnStop->setEnabled(false);


    layout->addWidget(mBtnRefresh);
    layout->addWidget(mBtnPreview);
    layout->addWidget(mBtnStop);
    layout->addWidget(mBtnScan);
    connect(mBtnRefresh, &QToolButton::clicked, [=]() {
        QString patientInf(mPatInf->getCurrentPatientJsonString(true));
        LOG_USER_OPERATION(StartRefresh)
        EventCenter::Default()->triggerEvent(RequestEmptyScan, nullptr, (QObject*)(&patientInf));
    });
    connect(mBtnPreview, &QToolButton::clicked, [=]() {
        LOG_USER_OPERATION(StartPreview)
        EventCenter::Default()->triggerEvent(RequestPreviewScan, nullptr, nullptr);
    });
    connect(mBtnScan, &QToolButton::clicked, [=]() {
        QString patientInf(mPatInf->getCurrentPatientJsonString(false));
        LOG_USER_OPERATION(StartScan)
        if (!JsonObject::Instance()->getEmptyScanID()){
            QString msg(tr("No refresh data exists, please do Refresh operation first."));
            EventCenter::Default()->triggerEvent(DeviceErrorRaise, nullptr, (QObject*)(&msg));
            return;
        }
        EventCenter::Default()->triggerEvent(RequestPatientScan, nullptr, (QObject*)(&patientInf));
    });
    connect(mBtnStop, &QToolButton::clicked, [=]() {
        LOG_USER_OPERATION(Stop)
        EventCenter::Default()->triggerEvent(RequestStop, nullptr, nullptr);
    });
}

void ScanFormWidget::protocolChanged(int type) {
	printf("%d\r\n", type);
	mPatInf->setProtocol(type);
}

void ScanFormWidget::setPreviewing(bool val) {
    mViewer->setVisible(val);
    mBtnPreview->setCheckable(val);
    mBtnPreview->setChecked(val);
    mBtnPreview->setEnabled(!val);
    mBtnRefresh->setEnabled(!val);
    mBtnScan->setEnabled(!val);
}

void ScanFormWidget::renderLoading() {
    setPreviewing(true);
    uchar c_data[PREVIEW_ROW][PREVIEW_COL];
    for (auto data_ptr : c_data) {
        memset(data_ptr, 0, PREVIEW_COL);
    }
    QImage img(c_data[0], PREVIEW_COL, PREVIEW_ROW, QImage::Format_Grayscale8);
    mViewer->setFixedSize(800, 800);
    QPixmap pic = QPixmap::fromImage(img).scaledToHeight(800, Qt::SmoothTransformation);
    QPainter painter(&pic);
    QPen pen;
    pen.setStyle(Qt::DashLine);
    pen.setWidth(3);
    QFont font("Futura");
    font.setPixelSize(26);
    font.setBold(true);
    painter.setFont(font);
    pen.setColor(QColor(255, 255, 0));
    painter.setPen(pen);
    painter.drawText(400 - 13 * 5, 400 + 13, "Loading...");
    mViewer->setPixmap(pic);
}

void ScanFormWidget::renderPreviewData(const QObject *data) {
    if (!data)return;
    auto array = (QByteArray*)data;
    auto raw_dataptr = (uchar*)array->data();
    uchar c_data[PREVIEW_ROW][PREVIEW_COL];
    for (auto data_ptr : c_data) {
        memcpy(data_ptr, raw_dataptr, PREVIEW_COL);
        raw_dataptr += PREVIEW_COL;
    }
    QImage img(c_data[0], PREVIEW_COL, PREVIEW_ROW, QImage::Format_Grayscale8);
    mViewer->setFixedSize(800, 800);
    QPixmap pic = QPixmap::fromImage(img).scaledToHeight(800, Qt::SmoothTransformation);
    QPainter painter(&pic);
    QPen pen;
    pen.setColor(QColor(255, 255, 0, 100));
    pen.setStyle(Qt::DashLine);
    pen.setWidth(3);
    QFont font("Futura");
    font.setPixelSize(26);
    font.setBold(true);
    painter.setFont(font);
    painter.setPen(pen);
    static int borderSpacing = (int)roundf(((PIXEL_SPACING * (PREVIEW_ROW * 0.5f) - HALF_ROI_WIDTH) * (800.0f / (1.5f * 140.0f))));
    painter.drawLine(borderSpacing, borderSpacing, borderSpacing, 800 - borderSpacing);
    painter.drawLine(borderSpacing + 1, borderSpacing, 800 - borderSpacing, borderSpacing);
    painter.drawLine(borderSpacing + 1, 800 - borderSpacing, 800 - borderSpacing, 800 - borderSpacing);
    painter.drawLine(800 - borderSpacing, borderSpacing + 1, 800 - borderSpacing, 800 - borderSpacing - 1);
    pen.setColor(QColor(255, 255, 0));
    painter.setPen(pen);
    painter.drawText(335,40,QString("Previewing, current frame:%1").arg(++mCurrentFrame));
    painter.drawText(borderSpacing + 13, 400 + 13, "L");
    painter.drawText(800 - borderSpacing - 30, 400 + 13, "R");
    painter.drawText(400 - 13, borderSpacing + 30, "H");
    painter.drawText(400 - 13, 800 - borderSpacing - 13, "F");
    painter.drawText(borderSpacing + 6, borderSpacing + 30, "ROI");
    mViewer->setPixmap(pic);
}

void ScanFormWidget::initEvents() {//Events---------------------------------------------------------------
    connect(EventCenter::Default(), &EventCenter::PatientSelected, [=](QObject* sender, QObject* data) {
        if (mUnInited)
        {
            mBtnScan->setEnabled(true);
            mBtnRefresh->setEnabled(true);
            mBtnPreview->setEnabled(true);
            mBtnStop->setEnabled(true);
            mUnInited = false;
        }
        mPatInf->setPatientInformation((PatientInformation*)data);
    });
    connect(EventCenter::Default(), &EventCenter::ResponseStop, [=](QObject* sender, QObject* data) {
        setPreviewing(false);
    });
    connect(EventCenter::Default(), &EventCenter::ResponsePreview, this,&ScanFormWidget::renderLoading);
    connect(EventCenter::Default(), &EventCenter::ResponsePreviewData, this,&ScanFormWidget::renderPreviewData);
    connect(EventCenter::Default(), &EventCenter::PatientSelected, [=](QObject* sender, QObject* data) {
        mPatInf->setPatientInformation((PatientInformation*)data);
    });
    connect(EventCenter::Default(), &EventCenter::ReloadLanguage, this, &ScanFormWidget::reloadLanguage);
    connect(EventCenter::Default(), &EventCenter::DeviceErrorRaise, [=](QObject* parent, QObject* msg){
        printf("signal:%d\r\n",senderSignalIndex());
        setPreviewing(false);
    });
}

void ScanFormWidget::reloadLanguage(){
    mBtnLeft->setText(tr("LEFT"));
    mBtnRight->setText(tr("RIGHT"));
    mBtnRefresh->setText(tr("Refresh"));
    mBtnPreview->setText(tr("Preview"));
    mBtnStop->setText(tr("Stop"));
    mBtnScan->setText(tr("Scan"));
    mLblProtocol->setText(tr("Protocol"));
    mLblPreview->setText(tr("Preview Parameters"));
    mLblPreview->setText(tr("Scan Parameters"));
    mLblE->setText(tr("some settings\n\nparameters\n"));
    mLblE2->setText(tr("some settings\n\nparameters\n"));
}