Added authentication and authorization, updated dependency injections, removed hard-coded connection string

SchengenVisaApi/Infrastructure/Auth/ServiceCollectionsExtensions.cs

@@ -0,0 +1,24 @@
+using System.IdentityModel.Tokens.Jwt;
+using ApplicationLayer.AuthServices.NeededServices;
+using ApplicationLayer.GeneralNeededServices;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace Infrastructure.Auth
+{
+    public static class ServiceCollectionsExtensions
+    {
+        public static IServiceCollection AddTokenGenerator(this IServiceCollection services, TokenGeneratorOptions options)
+        {
+            services.AddSingleton<JwtSecurityTokenHandler>();
+            services.AddSingleton<ITokenGenerator, TokenGenerator>(provider =>
+            {
+                var tokenHandler = provider.GetRequiredService<JwtSecurityTokenHandler>();
+                var dateTimeProvider = provider.GetRequiredService<IDateTimeProvider>();
+
+                return new TokenGenerator(options, tokenHandler, dateTimeProvider);
+            });
+
+            return services;
+        }
+    }
+}