#include "cpuworker.h"
#include <QProcess>
#include <QStringList>
#include <QRegularExpression>
#include <QTimer>

CPUWorker::CPUWorker(QObject *parent) : QObject(parent)
{
}

void CPUWorker::process()
{
	QTimer *timer = new QTimer(this);
	connect(timer, &QTimer::timeout, this, &CPUWorker::fetchCpuUsage);
	timer->start(1000); // 每秒调用一次 fetchCpuUsage
}

void CPUWorker::fetchCpuUsage()
{
	QProcess process;
	QStringList arguments = QStringList() << "-P" << "ALL" << "1" << "1";
	process.start("mpstat", arguments);
	process.waitForFinished();
	QString output = process.readAllStandardOutput();

	QStringList lines = output.split("\n");
	bool startParsing = false;
	int coreIndex	  = 0;
	for (const QString &line : lines) {
		if (line.contains("all")) {
			startParsing = true;
			continue;
		}
		if (startParsing && !line.trimmed().isEmpty()) {
			QStringList parts = line.split(QRegularExpression("\\s+"), Qt::SkipEmptyParts);
			if (parts.size() > 11) {
				double idle	 = parts[11].toDouble();
				double usage = 100.0 - idle;
				emit dataReady(coreIndex, usage);
				coreIndex++;
			}
		}
	}
}