@startuml
package "Models" {
    class "Athlete" {
        + ID_Athlete : int
        + Name : string
        + Email : string
        + Password : string
        + PublicProfile : text
        + WeightHistory : string
        + Goals : text
        +registerObserver()
        +removeObserver()
        +notifyObservers()
    }

    abstract class DataManager{

    }
    class StubManager extends DataManager{

    }
    class PlainManager extends DataManager{

    }
    interface GenericDataManager {
        +getItems() : List<T>
        +getItemById(id: Int) : T
    }
    class AthleteManager implements GenericDataManager{
        +getItemsByName(substring: String) : List<Team>
    }
    class ActivityManager implements GenericDataManager{
        +getItemsByName(substring: String) : List<Team>
    }

}
package "Services" {
    class "AthleteService" {
        +createAthlete()
        +updateProfile()
    }
    class "AuthService" {
        +login()
        +register()
        +signInWithGoogle()
        +signOut()
    }
    interface "NotificationStrategy" {
        +sendNotification()
    }
  
}
DataManager --> "-activityMgr" ActivityManager
DataManager --> "-activityMgr" ActivityManager
DataManager --> "-athleteMgr" AthleteManager
DataManager --> "+UserCurrent" Athlete

@enduml





@enduml