public async Task <IActionResult> PutLCMsg(long id, LCMsg lCMsg)
        {
            if (id != lCMsg.Id)
            {
                return(BadRequest());
            }

            _context.Entry(lCMsg).State = EntityState.Modified;

            try
            {
                await _context.SaveChangesAsync();
            }
            catch (DbUpdateConcurrencyException)
            {
                if (!LCMsgExists(id))
                {
                    return(NotFound());
                }
                else
                {
                    throw;
                }
            }

            return(NoContent());
        }
        public async Task <ActionResult <LCMsg> > PostLCMsg(LCMsg lCMsg)
        {
            if (lCMsg.Username == null)
            {
                return(BadRequest());
            }
            if (lCMsg.Content == null)
            {
                return(BadRequest());
            }
            if (lCMsg.Id != null)
            {
                return(BadRequest());
            }

            lCMsg.Id = Utils.IdGen.UnixMillis();

            _context.LCMsgs.Add(lCMsg);
            await _context.SaveChangesAsync();

            return(CreatedAtAction("GetLCMsg", new { id = lCMsg.Id }, lCMsg));
        }