feat: fast hash checker

Core/fasthashcalculator.h

@@ -0,0 +1,34 @@
+#ifndef FASTHASHCALCULATOR_H
+#define FASTHASHCALCULATOR_H
+
+#include <QHash>
+#include <QMutex>
+#include <QObject>
+#include <QFile>
+#include <QDirIterator>
+#include <Data/FileData.h>
+#include "tools.h"
+
+
+class FastHashCalculator : public QObject
+{
+    Q_OBJECT
+public:
+    explicit FastHashCalculator(QObject *parent = nullptr);
+    void calculateHashes(const QString& path, const QString& ignoreName);
+    QList<FileData> *getHashList() const;
+
+signals:
+    void finished();
+
+private:
+    QByteArray calculateFileHashOptimized(const QString &filePath);
+    void calculateSingleHash(const QString &filePath);
+
+    QList<FileData>* hashList;
+    QMutex _mutex;
+    quint64 currentSize;
+
+};
+
+#endif // FASTHASHCALCULATOR_H