#include "mainwindow.h"
#include "ui_mainwindow.h"

#include <QPainter>
#include <QTimer>

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
{
    ui->setupUi(this);

//    setMinimumSize(simulator.size * 40, simulator.size * 40);

    simulator.loadProgram(Qt::red, 10, 10);
    simulator.loadProgram(Qt::blue, 15, 15);

    QTimer* timer = new QTimer(this);
    connect(timer, &QTimer::timeout, this, [this](){
        simulator.simulate();
        repaint();
    });
    timer->start(50);
}

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

void MainWindow::paintEvent(QPaintEvent* event) {
    QPainter painter(this);

    int w = qMin(width(), height()) / simulator.size;
    int h = qMin(width(), height()) / simulator.size;

    for(int y = 0; y < simulator.size; ++y) {
        for(int x = 0; x < simulator.size; ++x) {
            int xx = x * w;
            int yy = y * w;
            painter.setPen(Qt::black);
            painter.setBrush(Qt::gray);
            painter.drawRect(QRect(xx, yy,w, h));
        }
    }


    for (auto& program : simulator.programs) {
        int xx = program.position.x * w;
        int yy = program.position.y * w;
        painter.setPen(Qt::black);
        painter.setBrush(program.color);
        QRect rect(xx, yy,w, h);
        painter.drawRect(rect);

        auto& taskIndex = program.taskIndex;

        if(program.tasks.empty()) {
            continue;
        }

        taskIndex += 1;
        taskIndex %= program.tasks.size();

        if (taskIndex < program.tasks.size()) {
            auto& task = program.tasks[taskIndex];

            switch(task.direction) {
            case Right: painter.drawLine(rect.center(), QPoint(rect.right(), rect.center().y())); break;
            case Down: painter.drawLine(rect.center(), QPoint(rect.center().x(), rect.bottom())); break;
            case Left: painter.drawLine(rect.center(), QPoint(rect.left(), rect.center().y())); break;
            case Up: painter.drawLine(rect.center(), QPoint(rect.center().x(), rect.top())); break;
            }
            painter.drawText(rect, QString("%1:%2:%3").arg(program.banks.size()).arg(task.bankIndex).arg(task.instIndex));
        }

    }
}