#include "mainwindow.h"
#include "drawwidget.h"
#include "ui_mainwindow.h"
#include "simulationdialog.h"
#include "simulation.h"
#include <iostream>
#include <chrono>
#include <QTimer>
#include <QErrorMessage>
#include <QPalette>
#include "mapscene.h"

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow),
    p_simu(NULL),
    m_simSpeed(0),
    m_simSpeedChanged(false),
    m_paused(false)
{
    setWindowIcon(QIcon(":qss_icons/rc/PixelWars.png"));
    ui->setupUi(this);
    ui->actionAction_step->setEnabled(false);
    ui->actionPlayPause->setEnabled(false);
    ui->actionStop->setEnabled(false);
    m_simuTimer = new QTimer(this);
    connect(m_simuTimer,SIGNAL(timeout()),this, SLOT(updateSimu()));
    m_simuTimer->start(m_simSpeed);
    connect(ui->actionCreate_new_simulation, SIGNAL(triggered(bool)), this, SLOT(openSimuDialog()));
    connect(ui->simSpeedSlider, SIGNAL(valueChanged(int)), this, SLOT(changeSimSpeed(int)));
    connect(ui->flatSphereSlider, SIGNAL(valueChanged(int)), ui->drawWidget, SLOT(setFlatSphere(int)));
    connect(ui->surfaceRatioSlider, SIGNAL(valueChanged(int)), ui->drawWidget, SLOT(setSurfaceRatio(int)));
    connect(ui->flatSphereSlider, SIGNAL(valueChanged(int)), ui->drawWidget, SLOT(repaint()));
    connect(ui->surfaceRatioSlider, SIGNAL(valueChanged(int)), ui->drawWidget, SLOT(repaint()));
    connect(ui->actionDebug, SIGNAL(toggled(bool)), ui->drawWidget, SLOT(setCursorEnabled(bool)));
    connect(ui->actionPlayPause, SIGNAL(toggled(bool)), this, SLOT(pauseSimu(bool)));
    connect(ui->actionAction_step, SIGNAL(triggered(bool)), this, SLOT(stepSimu()));
    connect(ui->actionStop, SIGNAL(triggered(bool)), this, SLOT(stopSimu()));
    connect(ui->resetToDefaultAdvanced, SIGNAL(pressed()), this, SLOT(resetAdvancedToDefault()));
    connect(ui->drawWidget, SIGNAL(debugPickChanged(Coord)), this, SLOT(changeDebugCursorPos(Coord)));
    changeSimSpeed(ui->simSpeedSlider->value());
    ui->advancedGroupBox->hide();
    ui->debugGroupBox->hide();
    ui->actionDebug->setEnabled(false);
}

MainWindow::~MainWindow()
{
    delete ui;
}

void MainWindow::openSimuDialog()
{
    pauseSimu(true);
    SimulationDialog *dialog = new SimulationDialog(this);
    dialog->setWindowTitle("Starting a new Simulation");
    QErrorMessage *err = new QErrorMessage(dialog);
    connect(dialog, SIGNAL(sendError(QString)), err, SLOT(showMessage(QString)));
    int ret = dialog->exec();
    if(ret == QDialog::Accepted)
    {
        if(p_simu != NULL)
        {
            delete p_simu;
            p_simu = NULL;
        }
        m_date = 0;
        p_simu = dialog->getSimulation();
        ui->drawWidget->startSimulation(p_simu->getMap());
        ui->actionAction_step->setEnabled(true);
        ui->actionPlayPause->setEnabled(true);
        ui->actionStop->setEnabled(true);
        ui->actionDebug->setEnabled(true);
    }
    pauseSimu(false);
    delete dialog;
}

void MainWindow::changeSimSpeed(int newSpeed)
{
    m_simSpeedChanged = true;
    m_simSpeed = ui->simSpeedSlider->maximum()+20-newSpeed;
}

void MainWindow::updateSimu()
{
    if(!m_paused)
    {
        if(p_simu != NULL)
        {
            p_simu->update();
            ui->dateLabel->setText(QString::number(++m_date));
            ui->populationLabel->setText(QString::number(p_simu->getPopulation()));
            ui->drawWidget->updateDudesBehavior();
            ui->drawWidget->setFlatSphere(ui->flatSphereSlider->value());
            ui->drawWidget->setSurfaceRatio(ui->surfaceRatioSlider->value());
            if(m_debugEnabled)
                updateDebugMessage();
            ui->drawWidget->repaint();
        }
        if(m_simSpeedChanged)
        {
            m_simuTimer->stop();
            m_simuTimer->start(m_simSpeed);
            m_simSpeedChanged = false;
        }
    }
}

void MainWindow::stepSimu()
{
    m_paused = false;
    updateSimu();
    pauseSimu(true);
}

void MainWindow::stopSimu()
{
    if(p_simu != NULL)
    {
        ui->drawWidget->stopSimulation();
        delete p_simu;
        p_simu = NULL;
    }
    pauseSimu(true);
    m_date = 0;
    ui->actionAction_step->setEnabled(false);
    ui->actionPlayPause->setEnabled(false);
    ui->actionStop->setEnabled(false);
    if(ui->actionDebug->isChecked())
        ui->actionDebug->toggle();
    ui->actionDebug->setEnabled(false);
}

void MainWindow::resetAdvancedToDefault()
{
    ui->flatSphereSlider->setValue(0);
    ui->surfaceRatioSlider->setValue(50);
}

void MainWindow::pauseSimu(bool pause)
{
    m_paused = pause;
    ui->actionPlayPause->setChecked(m_paused);
    if(m_paused)
        m_simuTimer->stop();
    else
        m_simuTimer->start(m_simSpeed);
    m_simSpeedChanged = false;
}

void MainWindow::updateDebugMessage()
{
    static char buffer[DEBUG_OUTPUT_MAX_SIZE] = {0};
    MapScene *map = p_simu->getMap();
    Pixel &px = map->getPixel(m_debugCursorPos);
    ui->pixelDescriptionArea->clear();
    p_simu->getPixelInfoString((char*)buffer, px);
    ui->pixelDescriptionArea->appendPlainText(QString(buffer));
    ui->pixelNameLabel->setText(PixelProperty::getName(px.type));
    glm::vec3 color = map->getColor(px);
    color *= 255;
    ui->pixelColorWidget->setStyleSheet(QString("QLineEdit {background-color: rgb(%1, %2, %3);}")
                                        .arg(int(color.r)).arg(int(color.g)).arg(int(color.b)));
}

void MainWindow::changeDebugCursorPos(Coord pos)
{
    if(!ui->actionDebug->isChecked())
        ui->actionDebug->toggle();
    m_debugCursorPos = pos;
    updateDebugMessage();
}