public async Task DeleteAsync(int userId, int exerciseId)
{
var athlete = await _athleteRepository.FindByCondition(condition : a => a.UserId == userId,
include : source => source.Include(a => a.AthleteExercises)
.ThenInclude(ae => ae.Day)
.Include(a => a.AthleteExercises)
.ThenInclude(ae => ae.Exercise)
.ThenInclude(e => e.PartOfBody));
if (athlete is null)
{
throw new AthleteNotFoundException(userId);
}
var exercise = athlete.AthleteExercises.SingleOrDefault(ae => ae.ExerciseId == exerciseId);
if (exercise is null)
{
throw new ExerciseForAthleteNotFoundException(userId, exerciseId);
}
await _athleteRepository.RemoveExerciseAsync(athlete, exercise);
await _athleteRepository.UpdateAsync(athlete);
}