public void ConfigureServices()

in app/Startup.cs [25:60]
27 lines of code
6 McCabe index (conditional complexity)

        public void ConfigureServices(IServiceCollection services)
        {
            services.AddControllersWithViews();

            services.AddDbContext<MvcMovieContext>(options =>
            {
                var connectionString = Configuration.GetConnectionString("MvcMovieContext");

                var dbHost = Configuration["DBHOST"];
                var dbUser = Configuration["DBUSER"];
                var dbPass = Configuration["DBPASS"];
                var dbName = Configuration["DBNAME"];

                if(!string.IsNullOrWhiteSpace(dbHost) &&
                   !string.IsNullOrWhiteSpace(dbUser) &&
                   !string.IsNullOrWhiteSpace(dbPass) &&
                   !string.IsNullOrWhiteSpace(dbName))
                {
                    var dbPort = Configuration["DBPORT"] ?? "3306";
                    var dbSslMode = Configuration["DBSSLMODE"];

                    connectionString = $"server={dbHost};port={dbPort};database={dbName};uid={dbUser};password={dbPass};";
                    if(!string.IsNullOrWhiteSpace(dbSslMode))
                        connectionString += $"SslMode={dbSslMode};";
                }

                options.UseMySQL(connectionString);
            });

            // Add identity types
            services.AddIdentity<AppUser, AppRole>().AddDefaultTokenProviders();

            // Identity Services
            services.AddTransient<IUserStore<AppUser>, AppUserStore>();
            services.AddTransient<IRoleStore<AppRole>, AppRoleStore>();
        }