private IEnumerable <ForeignRelation> GetTimeEntryTagRelations(TimeEntryTagData data)
{
yield return(new ForeignRelation()
{
Name = "TimeEntryId",
Type = typeof(TimeEntryData),
Required = true,
Id = data.TimeEntryId,
});
yield return(new ForeignRelation()
{
Name = "TagId",
Type = typeof(TagData),
Required = true,
Id = data.TagId,
});
}
private async Task <List <TagData> > UpdateTagsWithWorkspace(Guid timeEntryId, Guid workspaceId, List <TagData> oldTagList)
{
var dataStore = ServiceContainer.Resolve <IDataStore> ();
// Get new workspace tag list.
var tagList = await dataStore.Table <TagData> ()
.Where(r => r.WorkspaceId == workspaceId && r.DeletedAt == null)
.ToListAsync();
// Get new tags to create and existing tags from previous workspace.
var tagsToCreate = new List <TagData> (oldTagList.Where(t => tagList.IndexOf(n => n.Name.Equals(t.Name)) == -1));
var commonTags = new List <TagData> (tagList.Where(t => oldTagList.IndexOf(n => n.Name.Equals(t.Name)) != -1));
// Create new tags.
for (int i = 0; i < tagsToCreate.Count; i++)
{
var newTag = await TagModel.AddTag(workspaceId, tagsToCreate[i].Name);
tagsToCreate[i] = newTag;
}
// Contact both lists.
var newTagList = commonTags.Concat(tagsToCreate);
// Delete existing tag relationships from relationship table.
var oldRelationships = await dataStore.Table <TimeEntryTagData> ()
.Where(t => t.TimeEntryId == timeEntryId && t.DeletedAt == null)
.ToListAsync();
oldRelationships.ForEach(async(r) => await dataStore.DeleteAsync(r));
// Create and save new relationships
foreach (var item in newTagList)
{
var r = new TimeEntryTagData {
TagId = item.Id,
TimeEntryId = timeEntryId
};
await dataStore.PutAsync(r);
}
return(newTagList.ToList());
}
private void OnDataChange(TimeEntryTagData data, DataAction action)
{
var shouldUpdate = false;
var isExcluded = action == DataAction.Delete ||
data.DeletedAt != null ||
data.TimeEntryId != timeEntryId;
if (isExcluded)
{
shouldUpdate = tagIds.Remove(data.TagId);
}
else
{
shouldUpdate = tagIds.Add(data.TagId);
var shouldAdd = shouldUpdate && !tagsList.Any(i => i.Id == data.TagId);
if (shouldAdd)
{
// Try to add TagData from cache, or load it
var tag = TagCache.Get(data.TagId);
if (tag != null)
{
tagsList.Add(tag);
}
else
{
shouldUpdate = false;
LoadTagData(data.TagId);
}
}
}
if (shouldUpdate)
{
OnUpdated();
}
}
