// This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
services.AddMemoryCache(options => {
options.SizeLimit = this.Configuration.GetValue <long?>("MemCache:SizeLimit", null);
});
ILyricsGenerator lyricsGenerator =
this.Configuration.GetValue <string>("Generator", null) == "dummy"
? new DummyLyrics()
: this.CreateGradientLyrics();
CheckGeneratorSanity(lyricsGenerator);
services.AddSingleton(lyricsGenerator);
services.Configure <IdentityOptions>(options => {
options.Password.RequiredUniqueChars = 4;
options.Password.RequiredLength = 5;
options.Password.RequireDigit = false;
options.Password.RequireLowercase = options.Password.RequireUppercase = false;
options.Password.RequireNonAlphanumeric = false;
});
services.Configure <CookiePolicyOptions>(options => {
// This lambda determines whether user consent for non-essential cookies is needed for a given request.
options.CheckConsentNeeded = context => true;
options.MinimumSameSitePolicy = SameSiteMode.None;
});
services.AddDbContext <ApplicationDbContext>(this.ConfigureDbContext);
services.AddDefaultIdentity <SongsUser>()
.AddDefaultUI()
.AddEntityFrameworkStores <ApplicationDbContext>();
services.AddScoped <ISongDatabase, CachedSongDatabase>();
services.AddSingleton(sp => {
var scopedProvider = sp.CreateScope().ServiceProvider;
return(SongVoteCache.Load(scopedProvider.GetService <ApplicationDbContext>().Votes));
});
services.AddSingleton(sp => {
var scopedProvider = sp.CreateScope().ServiceProvider;
return(new PregeneratedSongProvider(
scopedProvider.GetService <ISongDatabase>(),
scopedProvider.GetService <ApplicationDbContext>().Songs,
sp.GetService <ILogger <PregeneratedSongProvider> >(),
sp.GetService <IHostApplicationLifetime>().ApplicationStopping));
});
services.AddSingleton <IRandomSongProvider>(sp => new RandomSongProviderCombinator(
new WeightedRandom <IRandomSongProvider>(
new Dictionary <IRandomSongProvider, int> {
[sp.GetRequiredService <PregeneratedSongProvider>()] = 3,
[new TopSongWeightedProvider(sp.GetRequiredService <SongVoteCache>())] = 1,
}
), logger: sp.GetService <ILogger <RandomSongProviderCombinator> >()));
services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_3_0);
}
public CachedSongDatabase(
[NotNull] ILyricsGenerator lyricsGenerator,
[NotNull] IMemoryCache cache,
[NotNull] ApplicationDbContext dbContext)
{
this.lyricsGenerator = lyricsGenerator ?? throw new ArgumentNullException(nameof(lyricsGenerator));
this.cache = cache ?? throw new ArgumentNullException(nameof(cache));
this.dbContext = dbContext ?? throw new ArgumentNullException(nameof(dbContext));
}
static async void CheckGeneratorSanity(ILyricsGenerator lyricsGenerator) => await lyricsGenerator.GenerateLyrics(song : 1362233347, CancellationToken.None) .ConfigureAwait(false);