/// <summary>
/// Moves the quest step with the given key on place down (and changes the next quest step.
/// </summary>
/// <param name="questStepKey">Unique identifier of the quest step.</param>
/// <returns>An awaitable task that yields no return value.</returns>
public async Task MoveUpAsync(Guid questStepKey)
{
var questStep = await questRepository.GetQuestStepAsync(questStepKey);
var nextQuestStep = await questRepository.GetNextQuestStepAsync(questStep.QuestKey, questStep.SortOrder);
if (nextQuestStep == null)
{
return;
}
nextQuestStep.SortOrder--;
questRepository.Save(nextQuestStep, ctx => ctx.QuestStep, qs => qs.QuestStepKey == nextQuestStep.QuestStepKey);
questStep.SortOrder++;
questRepository.Save(questStep, ctx => ctx.QuestStep, qs => qs.QuestStepKey == questStep.QuestStepKey);
}
