public async Task Execute(PangulDbContext db, UpdateAnswerMeta command)
{
command.Validate();
var meta = await db.AnswerMeta.FirstOrDefaultAsync(i =>
i.UserId == command.UserContext.User.UserId &&
i.AnswerId == command.Derived.AnswerId &&
i.RowVersion == command.Derived.RowVersion);
// Maybe just inserted?
if (meta == null)
{
meta = db.AnswerMeta.Local.AsQueryable().FirstOrDefault(i =>
i.UserId == command.UserContext.User.UserId && i.AnswerId == command.Derived.AnswerId);
}
if (meta == null)
{
throw new PangulCommandFailedException(CommandFailureType.MissingData, $"No such AnswerMeta ({command.AnswerId})");
}
// Update properties
meta.RowVersion = command.Derived.RowVersion;
meta.Votes = command.Votes;
}
public async Task <AnswerMetaInternalModel> UpdateAnswerMetadata(PangulDbContext db, UserContext user, UpdateAnswerMeta model)
{
model.UserContext = user;
var meta = await _internalMetaService.RequireAnswerMetaForUser(db, user, model.AnswerId);
var delta = model.Votes - meta.Votes;
await _updateAnswerMeta.Execute(db, model);
if (delta != 0)
{
await _internalMetaService.UpdateAnswerGlobalMetadata(db, user, new UpdateAnswerGlobalMeta()
{
UserContext = user,
AnswerId = model.AnswerId,
Votes = delta
});
}
return(await GetAnswerMetadata(db, user, model.AnswerId));
}
