/// <summary>
/// Ändert den aktuellen Status eines <see cref="DependentSubject"/>s.
/// </summary>
/// <param name="dependentSubjectId">ID des <see cref="DependentSubject"/>.</param>
/// <param name="newState">Neuer Status.</param>
/// <param name="comment">Kommentar zur Statusänderung (optional).</param>
/// <returns>Informationen zum asynchronen Vorgang.</returns>
public async Task UpdateDependentSubjectStateAsync(int dependentSubjectId, DependentSubjectState newState, string comment = "")
{
var stateEntries = DatabaseContext.ChangeDependentSubjectStateEntries;
var entry = CreateState(dependentSubjectId, newState, comment);
await stateEntries.AddAsync(entry);
await DatabaseContext.SaveChangesAsync();
}
/// <summary>
/// Fabrikmethode zum Erzeugen einer <see cref="ChangeDependentSubjectStateEntry"/>-Instanz.
/// </summary>
/// <param name="dependentSubjectId">ID des <see cref="DependentSubject"/>s, dem der Eintrag zugeordnet werden soll.</param>
/// <param name="state">Initialer Status des Änderungseintrags.</param>
/// <param name="comment">Kommentar zum Änderungseintrag (optional).</param>
/// <returns>Erzeugte <see cref="ChangeDependentSubjectStateEntry"/>-Instanz.</returns>
protected virtual ChangeDependentSubjectStateEntry CreateState(int dependentSubjectId, DependentSubjectState state, string comment = "") => new ChangeDependentSubjectStateEntry()
{
DependentSubjectId = dependentSubjectId,
CurrentState = state,
DateTime = DateTime.Now,
Comment = comment
};
