#include "qcustomplot.h"
#include <QApplication>
#include <QJsonDocument>
#include <QJsonObject>
#include <QBuffer>
#include <cstdio>
#include <iostream>
#include <QHash>
#include <fcntl.h>
#include <io.h>
int main(int argc, char **argv) {
 _setmode(_fileno(stdout), _O_BINARY);
 QApplication app(argc,argv);
 QCustomPlot plot;plot.setNotAntialiasedElements(QCP::aeAll);
 plot.setBackground(Qt::transparent);
 plot.axisRect()->setBackground(Qt::transparent);
 plot.axisRect()->setAutoMargins(QCP::msNone);
 plot.axisRect()->setMargins(QMargins(0,0,0,0));
 plot.plotLayout()->setMargins(QMargins(0,0,0,0));
 for(auto axis: plot.axisRect()->axes()) {axis->setVisible(false);axis->grid()->setVisible(false);}
 auto graph=plot.addGraph(); graph->setAdaptiveSampling(true);
 QHash<QString,QSharedPointer<QCPGraphDataContainer>> records;
 std::string line;
 while(std::getline(std::cin,line)) {
  auto o=QJsonDocument::fromJson(QByteArray::fromStdString(line)).object();
  auto path=o["file"].toString();
  if(!records.contains(path)) {
   QFile f(path); if(!f.open(QIODevice::ReadOnly)) return 2;
   int n=o["count"].toInt(); QByteArray bytes=f.readAll();
   if(bytes.size()!=qint64(n)*16) return 3;
   QVector<double> x(n),y(n); memcpy(x.data(),bytes.constData(),n*8);memcpy(y.data(),bytes.constData()+n*8,n*8);
   auto data=QSharedPointer<QCPGraphDataContainer>::create();
   QVector<QCPGraphData> points(n);for(int i=0;i<n;i++)points[i]=QCPGraphData(x[i],y[i]);
   data->set(points,false);records.insert(path,data);
   if(records.size()>4) { auto old=records.begin();if(old.key()==path)++old;records.erase(old); }
  }
  graph->setData(records[path]);graph->setPen(QPen(QColor(o["color"].toString()),1));
  plot.xAxis->setRange(o["left"].toDouble(),o["right"].toDouble());
  plot.yAxis->setRange(o["bottom"].toDouble(),o["top"].toDouble());
  int w=o["width"].toInt(),h=o["height"].toInt();
  plot.resize(w,h);
  QByteArray png;QBuffer buf(&png);buf.open(QIODevice::WriteOnly);plot.toPixmap(w,h,1.).save(&buf,"PNG");
  std::cout<<png.size()<<"\n";std::cout.write(png.constData(),png.size());std::cout.flush();
 }
 return 0;
}