feat(issue-149): implement api gateway for e-sender api

src/ApiGateways/O2NextGen.Web.BFF.Core/O2NextGen.Web.BFF.Core/Config/UrlsConfig.cs

@@ -0,0 +1,8 @@
+namespace O2NextGen.Web.BFF.Core.Config
+{
+    public class UrlsConfig
+    {
+        public string ESenderUrl { get; set; }
+        public string CGenUrl { get; set; }
+    }
+}

src/ApiGateways/O2NextGen.Web.BFF.Core/O2NextGen.Web.BFF.Core/Features/C-Gen/CertificatesController.cs

@@ -1,10 +1,6 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
-using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc;
 
-namespace O2NextGen.Mobile.BFF.Core.Features.CGen
+namespace O2NextGen.Web.BFF.Core.Features.C_Gen
 {
     [Route("api/features/c-gen/[controller]")]
     public class CertificatesController : Controller

src/ApiGateways/O2NextGen.Web.BFF.Core/O2NextGen.Web.BFF.Core/Features/C-Gen/VersionController.cs

@@ -1,10 +1,6 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
-using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc;
 
-namespace O2NextGen.Mobile.BFF.Core.Features.CGen
+namespace O2NextGen.Web.BFF.Core.Features.C_Gen
 {
     [Route("api/features/c-gen/[controller]")]
     public class VersionController : Controller

src/ApiGateways/O2NextGen.Web.BFF.Core/O2NextGen.Web.BFF.Core/Features/E-Sender/ESenderController.cs

@@ -0,0 +1,64 @@
+using System;
+using System.Threading;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Mvc;
+using O2NextGen.Web.BFF.Core.Features.E_Sender.Models;
+using O2NextGen.Web.BFF.Core.Features.E_Sender.Services;
+
+namespace O2NextGen.Web.BFF.Core.Features.E_Sender
+{
+    [Route("api/features/e-sender")]
+    public class ESenderController : Controller
+    {
+        private readonly IESenderService _senderService;
+
+        public ESenderController(IESenderService senderService)
+        {
+            _senderService = senderService;
+        }
+
+        #region Methods
+
+        [HttpGet]
+        [Route("")]
+        public async Task<IActionResult> GetAllAsync()
+        {
+            throw new NotImplementedException();
+        }
+
+        [HttpGet]
+        [Route("{id}")]
+        public async Task<IActionResult> GetByIdAsync(long id, CancellationToken ct)
+        {
+            var result = _senderService.GetAsync(id, ct);
+            return Ok(result);
+        }
+
+        [HttpPut]
+        [Route("id")]
+        public async Task<IActionResult> UpdateAsync(long id, [FromBody] MailRequestViewModel model,
+            CancellationToken ct)
+        {
+            throw new NotImplementedException();
+        }
+
+        [HttpPost]
+        [HttpPut]
+        [Route("")]
+        public async Task<IActionResult> AddAsync([FromBody] MailRequestViewModel model, CancellationToken ct)
+        {
+            var result = await _senderService.AddAsync(model, ct);
+            return CreatedAtAction(nameof(GetByIdAsync), new {id = result.Id}, result);
+        }
+
+        #endregion
+
+        [HttpDelete]
+        [Route("id")]
+        public async Task<IActionResult> RemoveAsync(long id, CancellationToken ct)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}
+

src/ApiGateways/O2NextGen.Web.BFF.Core/O2NextGen.Web.BFF.Core/Features/E-Sender/Models/MailRequestViewModel.cs

@@ -0,0 +1,12 @@
+namespace O2NextGen.Web.BFF.Core.Features.E_Sender.Models
+{
+    public class MailRequestViewModel
+    {
+        public long Id { get;  set; }
+        public string From { get;  set; }
+        public string To { get;  set; }
+        public string Body { get;  set; }
+        public string Subject { get;  set; }
+    }
+}
+

src/ApiGateways/O2NextGen.Web.BFF.Core/O2NextGen.Web.BFF.Core/Features/E-Sender/Services/ESenderService.cs

@@ -0,0 +1,35 @@
+using System;
+using System.Net.Http;
+using System.Threading;
+using System.Threading.Tasks;
+using Microsoft.Extensions.Options;
+using O2NextGen.Web.BFF.Core.Config;
+using O2NextGen.Web.BFF.Core.Features.E_Sender.Models;
+
+namespace O2NextGen.Web.BFF.Core.Features.E_Sender.Services
+{
+    public class ESenderService: IESenderService
+    {
+        private readonly HttpClient _httpClient;
+        private readonly IOptions<UrlsConfig> _config;
+        private string ApiVersion { get; } = "1.0";
+
+        public ESenderService(HttpClient httpClient, IOptions<UrlsConfig> config)
+        {
+            _httpClient = httpClient ?? throw new ArgumentNullException(nameof(httpClient));
+            _config = config ?? throw new ArgumentNullException(nameof(config));
+        }
+        public async Task<MailRequestViewModel> AddAsync(MailRequestViewModel model, CancellationToken ct)
+        {
+            var response = await _httpClient.PostAsJsonAsync(_config.Value.ESenderUrl+"/api/emailsender",model,ct);
+            return await response.Content.ReadAsAsync<MailRequestViewModel>(ct);
+        }
+
+        public async Task<MailRequestViewModel> GetAsync(long id, CancellationToken ct)
+        {
+            var response = await _httpClient.GetAsync(_config.Value.ESenderUrl+"/api/emailsender",ct);
+            return await response.Content.ReadAsAsync<MailRequestViewModel>(ct);
+
+        }
+    }
+}

src/ApiGateways/O2NextGen.Web.BFF.Core/O2NextGen.Web.BFF.Core/Features/E-Sender/Services/IESenderService.cs

@@ -0,0 +1,12 @@
+using System.Threading;
+using System.Threading.Tasks;
+using O2NextGen.Web.BFF.Core.Features.E_Sender.Models;
+
+namespace O2NextGen.Web.BFF.Core.Features.E_Sender.Services
+{
+    public interface IESenderService
+    {
+        Task<MailRequestViewModel> AddAsync(MailRequestViewModel model, CancellationToken ct);
+        Task<MailRequestViewModel> GetAsync(long id, CancellationToken ct);
+    }
+}

src/ApiGateways/O2NextGen.Web.BFF.Core/O2NextGen.Web.BFF.Core/Features/E-Sender/VersionController.cs

@@ -1,10 +1,6 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
-using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc;
 
-namespace O2NextGen.Web.BFF.Core.Features.ESender
+namespace O2NextGen.Web.BFF.Core.Features.E_Sender
 {
     [Route("api/features/e-sender/[controller]")]
     public class VersionController : Controller

src/ApiGateways/O2NextGen.Web.BFF.Core/O2NextGen.Web.BFF.Core/Infrastructure/HttpClientAuthorizationDelegatingHandler.cs

@@ -0,0 +1,50 @@
+using System.Collections.Generic;
+using System.Net.Http;
+using System.Net.Http.Headers;
+using System.Threading;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Authentication;
+using Microsoft.AspNetCore.Http;
+
+namespace O2NextGen.Web.BFF.Core.Infrastructure
+{
+    public class HttpClientAuthorizationDelegatingHandler
+        : DelegatingHandler
+    {
+        private readonly IHttpContextAccessor _httpContextAccesor;
+
+        public HttpClientAuthorizationDelegatingHandler(IHttpContextAccessor httpContextAccesor)
+        {
+            _httpContextAccesor = httpContextAccesor;
+        }
+
+        protected override async Task<HttpResponseMessage> SendAsync(HttpRequestMessage request,
+            CancellationToken cancellationToken)
+        {
+            var authorizationHeader = _httpContextAccesor.HttpContext
+                .Request.Headers["Authorization"];
+
+            if (!string.IsNullOrEmpty(authorizationHeader))
+            {
+                request.Headers.Add("Authorization", new List<string>() {authorizationHeader});
+            }
+
+            var token = await GetToken();
+
+            if (token != null)
+            {
+                request.Headers.Authorization = new AuthenticationHeaderValue("Bearer", token);
+            }
+
+            return await base.SendAsync(request, cancellationToken);
+        }
+
+        async Task<string> GetToken()
+        {
+            const string ACCESS_TOKEN = "access_token";
+
+            return await _httpContextAccesor.HttpContext
+                .GetTokenAsync(ACCESS_TOKEN);
+        }
+    }
+}

src/ApiGateways/O2NextGen.Web.BFF.Core/O2NextGen.Web.BFF.Core/O2NextGen.Web.BFF.Core.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp2.1</TargetFramework>
+    <TargetFramework>netcoreapp2.2</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>
@@ -13,7 +13,6 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.AspNetCore.App" />
-    <PackageReference Include="Microsoft.AspNetCore.Razor.Design" Version="2.1.2" PrivateAssets="All" />
   </ItemGroup>
 
   <ItemGroup>

src/ApiGateways/O2NextGen.Web.BFF.Core/O2NextGen.Web.BFF.Core/Startup.cs

@@ -1,15 +1,20 @@
 using System;
 using System.Collections.Generic;
+using System.IdentityModel.Tokens.Jwt;
 using System.Linq;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Hosting;
+using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.HttpsPolicy;
+using Microsoft.AspNetCore.Internal;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Options;
+using O2NextGen.Web.BFF.Core.Config;
+using O2NextGen.Web.BFF.Core.Features.E_Sender.Services;
 
 namespace O2NextGen.Web.BFF.Core
 {
@@ -24,7 +29,8 @@ public Startup(IConfiguration configuration)
 
         public void ConfigureServices(IServiceCollection services)
         {
-            services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_1);
+            services.AddCustomMvc(Configuration);
+            services.AddApplicationServices();
         }
 
         public void Configure(IApplicationBuilder app, IHostingEnvironment env)
@@ -33,14 +39,63 @@ public void Configure(IApplicationBuilder app, IHostingEnvironment env)
             {
                 app.UseDeveloperExceptionPage();
             }
-            else
-            {
-                app.UseHsts();
-            }
-
-            app.UseHttpsRedirection();
+
+            // app.UseHttpsRedirection();
+            // app.UseRouting();
+            //
+            // app.UseAuthorization();
+                
             app.UseMvc();
         }
     }
+
+    //Todo: will move to file
+    public static class ServiceCollectionExtensions
+    {
+        public static IServiceCollection AddCustomMvc(this IServiceCollection services, IConfiguration configuration)
+        {
+            services.AddOptions();
+            services.Configure<UrlsConfig>(configuration.GetSection("urls"));
+
+            var mvcBuilder = services.AddMvcCore();
+            mvcBuilder.SetCompatibilityVersion(CompatibilityVersion.Version_2_2);
+            mvcBuilder.AddJsonFormatters();
+            return services;
+        }
+
+        public static IServiceCollection AddCustomAuthentication(this IServiceCollection services, IConfiguration configuration)
+        {
+            JwtSecurityTokenHandler.DefaultInboundClaimTypeMap.Remove("sub");
+
+            // var identityUrl = configuration.GetValue<string>("urls:e-sender");
+            // services.AddAuthentication(options =>
+            //     {
+            //         options.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
+            //         options.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
+            //
+            //     })
+            //     .AddJwtBearer(options =>
+            //     {
+            //         options.Authority = identityUrl;
+            //         options.RequireHttpsMetadata = false;
+            //         options.Audience = "webshoppingagg";
+            //     });
+
+            return services;
+        }
+        public static IServiceCollection AddApplicationServices(this IServiceCollection services)
+        {
+            //register delegating handlers
+            // services.AddTransient<HttpClientAuthorizationDelegatingHandler>();
+            services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();
+
+            //register http services
+
+            services
+                .AddHttpClient<IESenderService, ESenderService>();
+
+            return services;
+        }
+    }
 }
 

src/ApiGateways/O2NextGen.Web.BFF.Core/O2NextGen.Web.BFF.Core/appsettings.json

@@ -4,6 +4,9 @@
       "Default": "Warning"
     }
   },
-  "AllowedHosts": "*"
+  "AllowedHosts": "*",
+  "urls": {
+    "ESenderUrl": "https://e-sender"
+  }
 }