/*
  This program is free software; you can redistribute it and/or
  modify it under the terms of the GNU General Public License
  as published by the Free Software Foundation; either version
  2 of the License, or (at your option) any later version.
*/

#ifndef CONSISTENCYCHECK_H
#define CONSISTENCYCHECK_H

#include <QThread>
#include <QSqlDatabase>
#include <QMutex>
#include <QStringList>
#include <QList>

#include "smdialog.h"

class QPushButton;
class QPlainTextEdit;
class QLabel;
class QString;
class QSqlQuery;
class QFileInfo;
class ConsistencyChecker;
class QProgressBar;

class ConsistencyCheck : public SmDialog {
    Q_OBJECT
	public:
		enum Mode { DbCheck, FsCheck };
		explicit ConsistencyCheck(QWidget *parent = 0, Qt::WindowFlags f = 0);
        ~ConsistencyCheck();

    public slots:
        void setProgressBarMax(int max);
        void setProgress(int value);

	private slots:
		void startChecker(int checkerType);
		void addMessage(const QString &message);
		void checkerStarted();
		void checkerFinished();
		void cancelChecker();
		void cleanup();

	private:
		void moveFiles(const QStringList &files);
		QPushButton *mCancelExit;
		QPushButton *mCheckDb;
		QPushButton *mCheckFs;
		QPushButton *mCleanup;
		QPlainTextEdit *mOkDisplay;
		QPlainTextEdit *mErrorDisplay;
        QLabel *mActivity;
        QProgressBar *mProgress;
		ConsistencyChecker *mChecker;
};

class ConsistencyChecker : public QThread {
	Q_OBJECT
	public:
		enum Status { Ok, Fail };
		explicit ConsistencyChecker(QObject *parent = 0);
		~ConsistencyChecker();
		int mode() const { return mMode; }
        int count() const { return mCurCount; }
		void setMode(int mode) { mMode = mode; }
		int status() const { return mStatus; }
		void setStatus(int status) { mStatus = status; }
		void check();
		const QStringList strayFiles();
        const QList<int> strayFileIds();
        const QList<int> strayPicIds();

	public slots:
		void setCancel(bool cancel);
        void deleteFileIds(const QList<int> &ids);
        void deletePicIds(const QList<int> &ids);

	private slots:
        void dbCheck();
		void fsCheck();

	signals:
		void consistencyMsg(const QString &msg);
        void approxTotal(int);
        void progress(int);

	protected:
		void run();

	private:
		QString archivePath(const QString &fileName, const QString &md5sum) const;
		void doFsCheck(const QFileInfo &start, const QVector<QString> &md5sums);
        void doDbCheckFiles();
        void doDbCheckPics();
		bool mCanceled;
		int mMode;
		int mStatus;
		QSqlDatabase mDb;
		QSqlQuery *mFileQuery;
		QMutex mCancelMutex;
		QMutex mStrayFilesMutex;
        QMutex mStrayFileIdMutex;
        QMutex mStrayPicsIdMutex;
		QStringList mStrayFiles;
        QList<int> mStrayFileIds;
        QList<int> mStrayPicIds;
        int mCurCount;
};

#endif // CONSISTENCYCHECK_H