public async Task <ActionResult> Register(SummonerModel model)
{
ViewModel = await CreateViewModelAsync();
if (!ModelState.IsValid)
{
return(Error(ModelState));
}
// Rule: Summoner must not be registered to a User.
if (await Summoners.IsSummonerRegistered(model.Region, model.SummonerName))
{
return(Error("Summoner is already registered."));
}
// Rule: Summoner must exist.
var cacheKey = string.Concat(model.Region, ":", model.SummonerName).ToLowerInvariant();
var summoner = await CacheUtil.GetItemAsync(cacheKey,
() => Riot.FindSummonerAsync(model.Region, model.SummonerName));
if (summoner == null)
{
return(Error("Summoner not found."));
}
return(Success());
}
private Task <Summoner> FindSummonerAsync(string region, string summonerName)
{
return(CacheUtil.GetItemAsync($"{region}:{summonerName}".ToLowerInvariant(),
() => Riot.FindSummonerAsync(region, summonerName)));
}