user_data_backup.h

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#ifndef USER_DATA_BACKUP_H
#define USER_DATA_BACKUP_H
 
#include <QString>
#include <QStringList>
 
namespace UserDataBackup
{

constexpr qint64 MAX_AUTO_BACKUP_BYTES = 200LL * 1024 * 1024;

bool copyDirectoryRecursively(const QString &sourceDir, const QString &destDir);

bool createBackupSessionDir(const QString &backupRoot, QString *sessionDirOut);

bool backupAtRiskPaths(const QStringList &sourcePaths,
                       const QString &backupRoot,
                       QStringList *backupLocationsOut,
                       QString *sessionDirOut = nullptr);

qint64 estimateBackupSize(const QStringList &sourcePaths, qint64 capBytes = MAX_AUTO_BACKUP_BYTES);

QString defaultBackupRoot();

QStringList listBackupSessions(const QString &backupRoot);

QString findRecentUsableBackupSession(const QString &backupRoot, const QStringList &sourcePaths, int maxAgeHours = 24);

QString
findRecentCoveringBackupSession(const QString &backupRoot, const QStringList &sourcePaths, int maxAgeHours = 24);

bool isBackupSessionComplete(const QString &sessionDir);

void pruneOldBackupSessions(const QString &backupRoot, int keepCount = 5);

QStringList listSessionBackupLocations(const QString &sessionDir);

bool sessionCoversSources(const QString &sessionDir, const QStringList &sourcePaths);
 
} // namespace UserDataBackup
 
#endif // USER_DATA_BACKUP_H