public void ConfigureServices()

in src/AdminSite/Startup.cs [62:176]
96 lines of code
3 McCabe index (conditional complexity)

    public void ConfigureServices(IServiceCollection services)
    {
        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;
        });

        var config = new SaaSApiClientConfiguration()
        {
            AdAuthenticationEndPoint = this.Configuration["SaaSApiConfiguration:AdAuthenticationEndPoint"],
            ClientId = this.Configuration["SaaSApiConfiguration:ClientId"] ?? Guid.Empty.ToString(),
            ClientSecret = this.Configuration["SaaSApiConfiguration:ClientSecret"] ?? String.Empty,
            FulFillmentAPIBaseURL = this.Configuration["SaaSApiConfiguration:FulFillmentAPIBaseURL"],
            MTClientId = this.Configuration["SaaSApiConfiguration:MTClientId"] ?? Guid.Empty.ToString(),
            FulFillmentAPIVersion = this.Configuration["SaaSApiConfiguration:FulFillmentAPIVersion"],
            GrantType = this.Configuration["SaaSApiConfiguration:GrantType"],
            Resource = this.Configuration["SaaSApiConfiguration:Resource"],
            SaaSAppUrl = this.Configuration["SaaSApiConfiguration:SaaSAppUrl"],
            SignedOutRedirectUri = this.Configuration["SaaSApiConfiguration:SignedOutRedirectUri"],
            TenantId = this.Configuration["SaaSApiConfiguration:TenantId"] ?? Guid.Empty.ToString(),
            IsAdminPortalMultiTenant = this.Configuration["SaaSApiConfiguration:IsAdminPortalMultiTenant"]
        };
        var knownUsers = new KnownUsersModel()
        {
            KnownUsers = this.Configuration["KnownUsers"],
        };
        var creds = new ClientSecretCredential(config.TenantId.ToString(), config.ClientId.ToString(), config.ClientSecret);
        var boolMultiTenant = config.IsAdminPortalMultiTenant?.ToLower().Trim() ?? "false";



        services
            .AddAuthentication(options =>
            {
                options.DefaultAuthenticateScheme = OpenIdConnectDefaults.AuthenticationScheme;
                options.DefaultSignInScheme = CookieAuthenticationDefaults.AuthenticationScheme;
                options.DefaultChallengeScheme = CookieAuthenticationDefaults.AuthenticationScheme;
            })
            .AddOpenIdConnect(options =>
            {

                if (boolMultiTenant == "false")
                {
                    options.Authority = $"{config.AdAuthenticationEndPoint}/{config.TenantId}/v2.0";
                }
                else
                {
                    options.Authority = $"{config.AdAuthenticationEndPoint}/common/v2.0";
                }
                options.ClientId = config.MTClientId;
                options.ResponseType = OpenIdConnectResponseType.IdToken;
                options.CallbackPath = "/Home/Index";
                options.SignedOutRedirectUri = config.SignedOutRedirectUri;
                options.TokenValidationParameters.NameClaimType = ClaimConstants.CLAIM_SHORT_NAME;
                options.TokenValidationParameters.ValidateIssuer = false;
            })
            .AddCookie(options =>
            {
                options.ExpireTimeSpan = TimeSpan.FromMinutes(60);
                options.Cookie.MaxAge = options.ExpireTimeSpan;
                options.SlidingExpiration = true;
            });

        services
            .AddTransient<IClaimsTransformation, CustomClaimsTransformation>()
            .AddScoped<ExceptionHandlerAttribute>()
            .AddScoped<RequestLoggerActionFilter>()
        ;

        if (!Uri.TryCreate(config.FulFillmentAPIBaseURL, UriKind.Absolute, out var fulfillmentBaseApi))
        {
            fulfillmentBaseApi = new Uri("https://marketplaceapi.microsoft.com/api");
        }

        services
            .AddSingleton<IFulfillmentApiService>(new FulfillmentApiService(new MarketplaceSaaSClient(fulfillmentBaseApi, creds), config, new FulfillmentApiClientLogger()))
            .AddSingleton<IMeteredBillingApiService>(new MeteredBillingApiService(new MarketplaceMeteringClient(creds), config, new SaaSClientLogger<MeteredBillingApiService>()))
            .AddSingleton<SaaSApiClientConfiguration>(config)
            .AddSingleton<KnownUsersModel>(knownUsers);

        // Add the assembly version
        services.AddSingleton<IAppVersionService>(new AppVersionService(Assembly.GetExecutingAssembly()?.GetName()?.Version));

        services
            .AddScoped<ApplicationConfigService>();

        services
            .AddDbContext<SaasKitContext>(options => options.UseSqlServer(this.Configuration.GetConnectionString("DefaultConnection")));


        InitializeRepositoryServices(services);

        services.AddDistributedMemoryCache();
        services.AddSession(options =>
        {
            options.IdleTimeout = TimeSpan.FromMinutes(5);
            options.Cookie.HttpOnly = true;
            options.Cookie.IsEssential = true;
        });

        services.AddMvc(option => {
            option.EnableEndpointRouting = false;
            option.Filters.Add(new AutoValidateAntiforgeryTokenAttribute());
        });
        services.AddControllersWithViews();

        services.Configure<CookieTempDataProviderOptions>(options =>
        {
            options.Cookie.IsEssential = true;
        });

        services.AddScoped<OffersService>();
    }