(#2) add configuration options

src/Nuar/Nuar/Configuration/Auth.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace Nuar.Configuration
+{
+    public class Auth
+    {
+        public bool Enabled { get; set; }
+        public bool Global { get; set; }
+        public IDictionary<string, Policy> Policies { get; set; }
+    }
+}

src/Nuar/Nuar/Configuration/Http.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace Nuar.Configuration
+{
+    public class Http
+    {
+        public int Retries { get; set; }
+        public bool Exponential { get; set; }
+        public double Interval { get; set; }
+    }
+}

src/Nuar/Nuar/Configuration/LoadBalancer.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace Nuar.Configuration
+{
+    public class LoadBalancer
+    {
+        public bool Enabled { get; set; }
+        public string Url { get; set; }
+    }
+}

src/Nuar/Nuar/Configuration/Module.cs

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+namespace Nuar.Configuration
+{
+    public class Module
+    {
+        public string Name { get; set; }
+        public string Description { get; set; } 
+        public string Version { get; set; }
+        public bool? Enabled { get; set; }
+        public IEnumerable<Route> Routes { get; set; } 
+        public IDictionary<string, Service> Services { get; set; }
+
+    }
+}

src/Nuar/Nuar/Configuration/OnError.cs

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+namespace Nuar.Configuration
+{
+    public class OnError
+    {
+        public int Code { get; set; } = 200;
+        public object Data { get; set; }
+    }
+}

src/Nuar/Nuar/Configuration/OnSuccess.cs

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+namespace Nuar.Configuration
+{
+    public class OnSuccess
+    {
+        public int Code { get; set; } = 200;
+        public object Data { get; set; }
+    }
+}

src/Nuar/Nuar/Configuration/Policy.cs

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+namespace Nuar.Configuration
+{
+    public class Policy
+    {
+        public IDictionary<string, string> Claims { get; set; }
+    }
+}

src/Nuar/Nuar/Configuration/ResourceId.cs

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+namespace Nuar.Configuration
+{
+    public class ResourceId
+    {
+        public bool Generate { get; set; }
+        public string Property { get; set; }
+    }
+}

src/Nuar/Nuar/Configuration/Route.cs

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+namespace Nuar.Configuration
+{
+    public class Route
+    {
+        public ResourceId ResourceId { get; set; }
+        public string Upstream { get; set; }
+        public string Method { get; set; }
+        public IEnumerable<string> Methods { get; set; }
+        public bool MatchAll { get; set; }
+        public string Use { get; set; }
+        public string Downstream { get; set; }
+        public string DownstreamMethod { get; set; }
+        public bool? PassQueryString { get; set; }
+        public string ReturnValue { get; set; }
+        public string Payload { get; set; }
+        public string Schema { get; set; }
+        public bool? Auth { get; set; }
+        public IDictionary<string, string> RequestHeaders { get; set; }
+        public IDictionary<string, string> ResponseHeaders { get; set; }
+        public bool? ForwardRequestHeaders { get; set; }
+        public bool? ForwardResponseHeaders { get; set; }
+        public bool? ForwardStatusCode { get; set; }
+        public bool? GenerateRequestId { get; set; }
+        public bool? GenerateTraceId { get; set; }
+        public OnError OnError { get; set; }
+        public OnSuccess OnSuccess { get; set; }
+        public IDictionary<string, string> Claims { get; set; }
+        public IEnumerable<string> Policies { get; set; }
+        public IEnumerable<string> Bind { get; set; }
+        public IEnumerable<string> Transform { get; set; }
+        public IDictionary<string, string> Config { get; set; }
+    }
+}

src/Nuar/Nuar/Configuration/Service.cs

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+namespace Nuar.Configuration
+{
+    public class Service
+    {
+        public string LocalUrl { get; set; }
+        public string Url { get; set; }
+    }
+}

src/Nuar/Nuar/Error.cs

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+namespace Nuar
+{
+    public class Error
+    {
+        public string Code { get; set; }
+        public string Property { get; set; }
+        public string Message { get; set; }
+    }
+}

src/Nuar/Nuar/ExecutionData.cs

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+using System.Collections.Generic;
+using System.Dynamic;
+using System.Linq;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Routing;
+using Route = Nuar.Configuration.Route;
+
+namespace Nuar
+{
+    public class ExecutionData
+    {
+        public string RequestId { get; set; }
+        public string ResourceId { get; set; }
+        public string TraceId { get; set; }
+        public string UserId { get; set; }
+        public string ContentType { get; set; }
+        public string Downstream { get; set; }
+        public bool HasPayload { get; set; }
+        public IDictionary<string, string> Claims { get; set; }
+        public Route Route { get; set; }
+        public HttpContext Context { get; set; }
+        public RouteData Data { get; set; }
+        public ExpandoObject Payload { get; set; }        
+        public IEnumerable<Error> ValidationErrors { get; set; } = Enumerable.Empty<Error>();
+        public bool IsPayloadValid => ValidationErrors is null || !ValidationErrors.Any();
+    }
+}

src/Nuar/Nuar/IAuthenticationManager.cs

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+using Microsoft.AspNetCore.Http;
+
+namespace Nuar
+{
+    public interface IAuthenticationManager
+    {
+        Task<bool> TryAuthenticateAsync(HttpRequest request, RouteConfig routeConfig);
+    }
+}

src/Nuar/Nuar/IAuthorizationManager.cs

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+using System.Security.Claims;
+
+namespace Nuar
+{
+    public interface IAuthorizationManager
+    {
+        bool IsAuthorized(ClaimsPrincipal user, RouteConfig routeConfig);
+    }
+}

src/Nuar/Nuar/IDownstreamBuilder.cs

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+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Routing;
+
+namespace Nuar
+{
+    internal interface IDownstreamBuilder
+    {
+        string GetDownstream(RouteConfig routeConfig, HttpRequest request, RouteData data);
+    }
+}

src/Nuar/Nuar/IEnabledExtension.cs

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+namespace Nuar
+{
+    public interface IEnabledExtension
+    {
+        IExtension Extension { get; }
+        IExtensionOptions Options { get; }
+    }
+}

src/Nuar/Nuar/IExtension.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Builder;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace Nuar
+{
+    public interface IExtension
+    {
+        string Name { get; }
+        string Description { get; }
+        string Version { get; }
+        void Add(IServiceCollection services, IOptionsProvider optionsProvider);
+        void Use(IApplicationBuilder app, IOptionsProvider optionsProvider);
+    }
+}

src/Nuar/Nuar/IExtensionOptions.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace Nuar
+{
+    public interface IExtensionOptions
+    {
+        int? Order { get; set; }
+        bool? Enabled { get; set; }
+    }
+}

src/Nuar/Nuar/IExtensionProvider.cs

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+using System.Collections.Generic;
+
+namespace Nuar
+{
+    internal interface IExtensionProvider
+    {
+        IEnumerable<IEnabledExtension> GetAll();
+    }
+}

src/Nuar/Nuar/IHandler.cs

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+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Http;
+using NuarRoute = Nuar.Configuration.Route;
+
+namespace Nuar
+{
+    public interface IHandler
+    {
+        string GetInfo(NuarRoute route);
+        Task HandleAsync(HttpContext context, RouteConfig config);
+    }
+}

src/Nuar/Nuar/IOptions.cs

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+namespace Nuar
+{
+    public interface IOptions
+    {
+
+    }
+}

src/Nuar/Nuar/IOptionsProvider.cs

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+namespace Nuar
+{
+    public interface IOptionsProvider
+    {
+        T Get<T>(string name = null) where T : class, IOptions, new();
+        T GetForExtension<T>(string name) where T : class, IOptions, new();
+    }
+}

src/Nuar/Nuar/IPayloadBuilder.cs

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+using Microsoft.AspNetCore.Http;
+
+namespace Nuar
+{
+    public interface IPayloadBuilder
+    {
+         Task<string> BuildRawAsync(HttpRequest request);
+        Task<T> BuildJsonAsync<T>(HttpRequest request) where T : class, new();
+    }
+}

src/Nuar/Nuar/IPayloadManager.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace Nuar
+{
+    internal interface IPayloadManager
+    {
+        string GetKey(string method, string upstream);
+        IDictionary<string, PayloadSchema> Payloads { get; }
+    }
+}

src/Nuar/Nuar/IPayloadTransformer.cs

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+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Routing;
+using NuarRoute = Nuar.Configuration.Route;
+
+namespace Nuar
+{
+    internal interface IPayloadTransformer
+    {
+        bool HasTransformations(string resourceId, NuarRoute route);
+        PayloadSchema Transform(string payload, string resourceId, NuarRoute route, HttpRequest request, RouteData data);
+    }
+}

src/Nuar/Nuar/IPayloadValidator.cs

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+
+
+using Microsoft.AspNetCore.Http;
+
+namespace Nuar
+{
+    public interface IPayloadValidator
+    {
+        Task<bool> TryValidate(ExecutionData executionData, HttpResponse httpResponce);
+        Task<IEnumerable<Error>> GetValidationErrorsAsync(PayloadSchema payloadSchema);
+    }
+}

src/Nuar/Nuar/IPolicyManager.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace Nuar
+{
+    internal interface IPolicyManager
+    {
+        IDictionary<string, string> GetClaims(string policy);
+    }
+}

src/Nuar/Nuar/IRequestExecutionValidator.cs

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+using Microsoft.AspNetCore.Http;
+
+namespace Nuar
+{
+    internal interface IRequestExecutionValidator
+    {
+        Task<bool> TryExecuteAsync(HttpContext httpContext, RouteConfig routeConfig);
+    }
+}