public TrainingModel getByName(String trainingName) {
   Training foundTraining = trainingDao.getByName(trainingName);
   if (foundTraining != null) {
     return getById(foundTraining.getId());
   }
   return null;
 }
  public ArrayList<TrainingModel> getAll() {
    ArrayList<TrainingModel> allTrainings = new ArrayList<TrainingModel>();
    ArrayList<Training> trainings = trainingDao.getAll();

    for (Training training : trainings) {
      allTrainings.add(getById(training.getId()));
    }

    return allTrainings;
  }
  public TrainingModel createNew(TrainingModel model) {
    Training exists = trainingDao.getByName(model.getName());

    if (exists != null) {
      return null;
    }

    Training training = new Training();
    training.setName(model.getName());
    training.setDescription(model.getDescription());
    training.setDateCreated(model.getDateCreated());

    Training savedTraining = trainingDao.save(training);

    if (savedTraining != null) {
      model.setId(savedTraining.getId());
      return model;
    }

    return null;
  }
  public TrainingModel getById(int trainingId) {
    Training training = trainingDao.getById(trainingId);

    if (training == null) {
      return null;
    }

    TrainingModel model = new TrainingModel();
    model.setId(training.getId());
    model.setName(training.getName());
    model.setDescription(training.getDescription());
    model.setDateCreated(training.getDateCreated());

    ArrayList<TrainingsExercises> trainingsExercises =
        trainingsExercisesDao.getAllForTraining(trainingId);

    for (TrainingsExercises trainingExercise : trainingsExercises) {
      ExerciseModel exerciseModel = new ExerciseModel();
      exerciseModel.setId(trainingExercise.getId());

      Exercise exercise = exerciseDao.getById(trainingExercise.getExerciseId());
      exerciseModel.setName(exercise.getName());
      exerciseModel.setDescription(exercise.getDescription());
      exerciseModel.setImage(exercise.getImage());

      ArrayList<ExerciseSets> exerciseSets =
          exerciseSetsDao.getAllForExercise(trainingExercise.getId());

      for (ExerciseSets exerciseSet : exerciseSets) {
        ExerciseSetModel setModel = new ExerciseSetModel();
        setModel.setId(exerciseSet.getId());
        setModel.setNumberOfRepeats(exerciseSet.getNumberOfRepeats());
        setModel.setOrder(exerciseSet.getOrder());
        exerciseModel.addSet(setModel);
      }
      model.addExercise(exerciseModel);
    }

    return model;
  }