public async Task LikeAsync()
{
if (Item.Value == null || IsLiked.Value)
{
return;
}
_isLiked.Value = true;
Item.Value.LikeCount++;
using (await _lock.LockAsync())
{
try
{
var success = await _firestore.RunTransactionAsync(transaction =>
{
var document = _firestore.GetCollection(Models.Item.CollectionPath)
.GetDocument(Item.Value.Id);
var item = transaction.GetDocument(document).ToObject <Item>();
if (item == null)
{
return(false);
}
item.LikeCount++;
transaction.UpdateData(document, item);
return(true);
}).ConfigureAwait(false);
if (success)
{
var like = new Like
{
Timestamp = DateTime.Now.Ticks
};
await _firestore.GetDocument($"{User.CollectionPath}/{_accountService.UserId.Value}/{Like.CollectionPath}/{Item.Value.Id}")
.SetDataAsync(like)
.ConfigureAwait(false);
}
}
catch (Exception e)
{
System.Diagnostics.Debug.WriteLine(e);
}
}
}
public Task IncrementContributionCountAsync(int delta)
{
return(_firestore.RunTransactionAsync(transaction =>
{
var document = _firestore.GetCollection(User.CollectionPath)
.GetDocument(UserId.Value);
var user = transaction.GetDocument(document).ToObject <User>();
if (user != null)
{
user.ContributionCount += delta;
transaction.UpdateData(document, user);
}
}));
}