#pragma once

#include <QFileSystemWatcher>
#include <QDir>

class RecursiveFileSystemWatcher : public QObject
{
	Q_OBJECT
public:
	RecursiveFileSystemWatcher(QObject *parent);

	void setRootDir(const QDir &root);
	QDir rootDir() const { return m_root; }

	// WARNING: setting this to true may be bad for performance
	void setWatchFiles(const bool watchFiles);
	bool watchFiles() const { return m_watchFiles; }

	void setFileExpression(const QString &exp) { m_exp = exp; }
	QString fileExpression() const { return m_exp; }

	QStringList files() const { return m_files; }

signals:
	void filesChanged();
	void fileChanged(const QString &path);

public slots:
	void enable();
	void disable();

private:
	QDir m_root;
	bool m_watchFiles = false;
	bool m_isEnabled = false;
	QString m_exp;

	QFileSystemWatcher *m_watcher;

	QStringList m_files;
	void setFiles(const QStringList &files);

	void addFilesToWatcherRecursive(const QDir &dir);
	QStringList scanRecursive(const QDir &dir);

private slots:
	void fileChange(const QString &path);
	void directoryChange(const QString &path);
};