exercise status

exercise-status.dart

// from the outside we see : 

abstract class Step{
    bool get isLocked; // computed based on the state of previous steps
    // = !(previousExercise === null || previousExercise.isMarkedAsCompleted)
  
  
    bool get isFinished; // computed based on the fact that all the exercises in this step are completed
    // == step.exercises.all.status === finished
    // probably need a different term between completed vs finished ? 
  
    // THIS ONE IS THE ONLY INFO WE NEED TO PERSIST 
    bool get isMarkedAsCompleted; // user has deliberately clicked the "go to next button"
  
  
}


enum ExerciseCompletionStatus{
  notStarted,
  started,
  finished
}

abstract class Exercise {
   bool get isLocked; // computed based on the state of previous exercises and steps
   // == ! ( (previousStep== null && previousExercise == null) || (previousExercise == null && previousStep.isMarkedAsCompleted) || (previousExercise.finished)   )
    
  
   // THIS ONE NEEDS TO BE PERSISTED
   // initially notStarted
   // changes to started when we start adding a schedule activity or logging activity
   // moves to finished when user clicks finish at end of slides for Practice exercises .... or after a week ellapses for Scheduling activity
   ExerciseCompletionStatus get completionStatus ;
}