private static T InitRepository <T>()
{
if (GetInstance() == null)
{
throw new InvalidOperationException("Database is not specified");
}
var type = typeof(T);
var instance = _repos[type];
if (instance == null)
{
// ugly if-else. will be refactored if will cause problems
if (type == typeof(FileRepository))
{
instance = FileRepository.Create();
}
else if (type == typeof(FavoritesRepository))
{
instance = FavoritesRepository.Create();
}
else if (type == typeof(FolderRefRepository))
{
instance = FolderRefRepository.Create();
}
else
{
throw new InvalidOperationException();
}
_repos[type] = instance;
}
return((T)instance);
}
private void Create()
{
if (DatabaseFileExists())
{
throw new InvalidOperationException(String.Format("Database file {0} already exists", _dbFileName));
}
SQLiteConnection.CreateFile(_dbFileName);
FileRepository.Create(this);
FavoritesRepository.Create(this);
FolderRefRepository.Create(this);
}