public async Task Execute(PangulDbContext db, UpdateQuestionMeta command)
{
command.Validate();
var meta = await db.QuestionMeta.FirstOrDefaultAsync(i =>
i.UserId == command.UserContext.User.UserId &&
i.QuestionId == command.Derived.QuestionId &&
i.RowVersion == command.Derived.RowVersion);
// Maybe just inserted?
if (meta == null)
{
meta = db.QuestionMeta.Local.AsQueryable().FirstOrDefault(i =>
i.UserId == command.UserContext.User.UserId && i.QuestionId == command.Derived.QuestionId);
}
if (meta == null)
{
throw new PangulCommandFailedException(CommandFailureType.MissingData, $"No such QuestionMeta ({command.QuestionId})");
}
// Update properties
meta.RowVersion = command.Derived.RowVersion;
meta.Votes = command.Votes;
meta.Star = command.Star;
}
public async Task <QuestionMetaInternalModel> UpdateQuestionMetadata(PangulDbContext db, UserContext user, UpdateQuestionMeta model)
{
model.UserContext = user;
var meta = await _internalMetaService.RequireQuestionMetaForUser(db, user, model.QuestionId);
var delta = model.Votes - meta.Votes;
await _updateQuestionMeta.Execute(db, model);
if (delta != 0)
{
await _internalMetaService.UpdateQuestionGlobalMetadata(db, user, new UpdateQuestionGlobalMeta()
{
UserContext = user,
QuestionId = model.QuestionId,
Votes = delta,
});
}
return(await GetQuestionMetadata(db, user, model.QuestionId));
}
