//Mark a completed item as not finished
public void MarkAsInComplete(ToDoListItem toDoListItem)
{
if (toDoListItem is null)
{
throw new ArgumentNullException(nameof(toDoListItem));
}
if (toDoListItem.IsCompleted == false)
{
tasks.Remove(toDoListItem); //remove item from completed list -if it is unfinish
ToDoList toDoList = new ToDoList();
toDoList.AddItem(toDoListItem); //add that item to todo list again as unfinish task-if a task marked as completed and possible mark as incompleted
}
}
//add an repeating task as completed
public void RepeatCompleted(ToDoListItem toDoListItem, RepeatingTask repeatingTask)
{
if (toDoListItem is null)
{
throw new ArgumentNullException(nameof(toDoListItem));
}
if (toDoListItem.IsCompleted == true)
{
tasks.Add(toDoListItem);
}
if (repeatingTask.EndTime <= DateTime.Now)
{
tasks.Remove(toDoListItem); //task remove from completed
ToDoList toDoList = new ToDoList();
toDoList.AddItem(toDoListItem); //added to todo list again for next routine
}
}