feat(issue-161): add the e-sender feature to gateway of web version

Merge pull request #170 from live-dev999/live-dev999/issue161

src/ApiGateways/O2NextGen.Web.BFF.Core/O2NextGen.Web.BFF.Core/Features/Auth/AuthController.cs

@@ -0,0 +1,46 @@
+using Microsoft.AspNetCore.Antiforgery;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
+using O2NextGen.Web.BFF.Core.Features.Auth.Models;
+
+namespace O2NextGen.Web.BFF.Core.Features.Auth
+{
+    [Route("auth")]
+    public class AuthController : ControllerBase
+    {
+        private readonly IAntiforgery _antiForgery;
+
+        public AuthController(IAntiforgery antiForgery)
+        {
+            _antiForgery = antiForgery;
+        }
+
+        [HttpGet]
+        [Route("info")]
+        public ActionResult<AuthInfoModel> GetInfo()
+        {
+            var tokens = _antiForgery.GetAndStoreTokens(HttpContext);
+            HttpContext.Response.Cookies.Append(
+                "XSRF-TOKEN", 
+                tokens.RequestToken, 
+                //allow JS to grab the cookie to put it in the request header
+                new CookieOptions() {HttpOnly = false}); 
+
+            return new AuthInfoModel
+            {
+                Name = User.FindFirst("name").Value
+            };
+        }
+
+        /*
+        * No need to do anything here, as the auth middleware will take care of redirecting to IdentityServer4.
+        * When the user is authenticated and gets back here, we can redirect to the desired url. 
+        */
+        [HttpGet]
+        [Route("login")]
+        public IActionResult Login([FromQuery] string returnUrl)
+        {
+            return Redirect(string.IsNullOrWhiteSpace(returnUrl) ? "/" : returnUrl);
+        }
+    }
+}

src/ApiGateways/O2NextGen.Web.BFF.Core/O2NextGen.Web.BFF.Core/Features/Auth/Models/AuthInfoModel.cs

@@ -0,0 +1,7 @@
+namespace O2NextGen.Web.BFF.Core.Features.Auth.Models
+{
+    public class AuthInfoModel
+    {
+        public string Name { get; set; }
+    }
+}