public async Task SaveAsync()
{
if (IsManual)
{
return;
}
if (!data.PublicInstancePropertiesEqual(initialState))
{
data = await TimeEntryModel.PrepareForSync(data);
data = await TimeEntryModel.SaveTimeEntryDataAsync(data).ConfigureAwait(false);
}
if (!AreEqual(initialTagList, TagList))
{
await ResetTagRelatioships(data, TagList).ConfigureAwait(false);
data = await TimeEntryModel.SaveTimeEntryDataAsync(data).ConfigureAwait(false);
}
}
private async Task <TimeEntryData> SaveTagRelationships(TimeEntryData timeEntry, List <TagData> newTagList)
{
// Create tag list.
var dataStore = ServiceContainer.Resolve <IDataStore> ();
var existingTagRelations = new List <TimeEntryTagData> ();
var tags = await dataStore.Table <TimeEntryTagData> ()
.Where(r => r.TimeEntryId == timeEntry.Id && r.DeletedAt == null)
.ToListAsync();
existingTagRelations.AddRange(tags);
// Delete unused tag relations:
var deleteTasks = existingTagRelations
.Where(oldTagRelation => newTagList.All(newTag => newTag.Id != oldTagRelation.TagId))
.Select(tagRelation => new TimeEntryTagModel(tagRelation).DeleteAsync())
.ToList();
// Create new tag relations:
var createTasks = newTagList
.Where(newTag => existingTagRelations.All(oldTagRelation => oldTagRelation.TagId != newTag.Id))
.Select(data => new TimeEntryTagModel {
TimeEntry = new TimeEntryModel(timeEntry), Tag = new TagModel(data)
}.SaveAsync())
.ToList();
await Task.WhenAll(deleteTasks.Concat(createTasks));
if (deleteTasks.Any <Task> () || createTasks.Any <Task> ())
{
timeEntry = await TimeEntryModel.PrepareForSync(timeEntry);
timeEntry = await TimeEntryModel.SaveTimeEntryDataAsync(timeEntry);
}
return(timeEntry);
}