public async Task <string> Post([FromBody] string url)
{
// try to find the exact url in db
var id = await _db.UrlMaps.Where(x => x.Url == url).Select(x => x.Id).FirstOrDefaultAsync().ConfigureAwait(false);
if (id == 0)
{
var entry = await _db.UrlMaps.AddAsync(new UrlMap { Url = url }).ConfigureAwait(false);
await _db.SaveChangesAsync().ConfigureAwait(false);
id = entry.Entity.Id;
}
var hash = _hashService.IdToHash(id);
return(hash);
}