public async Task <IActionResult> AddAvitoRentAdverts([FromBody] RentURLFilterModel model)
        {
            var adverts = await HTMLParser.ParseAdvertsFromURL(model.ToURLString());

            foreach (AdvertModel advert in adverts)
            {
                var existingadvert = _context.Adverts.SingleOrDefault(row => row.Url == advert.Url);
                if (existingadvert != null)
                {
                    continue;
                }

                _context.Adverts.Add(advert);
                await _context.SaveChangesAsync();
            }

            return(Ok(model.ToURLString()));
        }