public async Task <Result <string> > ToShortAsync(string longUrl)
{
var result = new Result <string>();
var r = await _session.HasAsync(longUrl);
int retry = 10;
while (!r.Succeeded && retry > 0)
{
var shortId = RandomEx.GenerateString(6);
var link = new Link {
Id = shortId, LongUrl = longUrl
};
r = await _session.AddAsync(link);
retry--;
}
return(r.Succeeded ? result.Ok(r.Value.Id) : result.Merge(r));
}
