contract

type CountConnection interface {
	SetNext(connection CountConnection)
	ByUsername(ctx context.Context, username string) (int, error)
	All(ctx context.Context) (int, error)
}

type CountConnectionCacheService interface {
	Set(key string, value int, ttl time.Duration)
	Get(key string) (int, bool)
}

type DeviceRepository interface {
	Save(ctx context.Context, device *entity.Device) error
	Exists(ctx context.Context, device *entity.Device) bool
	DeleteByUsername(ctx context.Context, username string) error
	CountByUsername(ctx context.Context, username string) (int, error)
	ListByUsername(ctx context.Context, username string) ([]*entity.Device, error)
	ListAll(ctx context.Context) ([]*entity.Device, error)
	CountAll(ctx context.Context) (int, error)
}

type Executor interface {
	Execute(ctx context.Context, command string) (string, error)
}

type UserDAO interface {
	FindByUsername(ctx context.Context, username string) (*entity.User, error)
}

type UserRepository interface {
	FindByUsername(ctx context.Context, username string) (*entity.User, error)
}