Feature/migrate to minimal api (#662)

* migrate from classic controller to minimal api

* fix all PublicApi integration test

* update all nuget package add forget project

* fix pay now

* Adapt readme use in memory database

* undo AuthenticateEndpoint to use EndpointBaseAsync

* Update README.md

Co-authored-by: Steve Smith <steve@kentsmiths.com>

Co-authored-by: Steve Smith <steve@kentsmiths.com>

tests/PublicApiIntegrationTests/ApiTokenHelper.cs

@@ -0,0 +1,50 @@
+using Microsoft.eShopWeb.ApplicationCore.Constants;
+using Microsoft.IdentityModel.Tokens;
+using System;
+using System.Collections.Generic;
+using System.IdentityModel.Tokens.Jwt;
+using System.Security.Claims;
+using System.Text;
+
+namespace PublicApiIntegrationTests
+{
+    public class ApiTokenHelper
+    {
+        public static string GetAdminUserToken()
+        {
+            string userName = "admin@microsoft.com";
+            string[] roles = { "Administrators" };
+
+            return CreateToken(userName, roles);
+        }
+
+        public static string GetNormalUserToken()
+        {
+            string userName = "demouser@microsoft.com";
+            string[] roles = { };
+
+            return CreateToken(userName, roles);
+        }
+
+        private static string CreateToken(string userName, string[] roles)
+        {
+            var claims = new List<Claim> { new Claim(ClaimTypes.Name, userName) };
+
+            foreach (var role in roles)
+            {
+                claims.Add(new Claim(ClaimTypes.Role, role));
+            }
+
+            var key = Encoding.ASCII.GetBytes(AuthorizationConstants.JWT_SECRET_KEY);
+            var tokenDescriptor = new SecurityTokenDescriptor
+            {
+                Subject = new ClaimsIdentity(claims.ToArray()),
+                Expires = DateTime.UtcNow.AddHours(1),
+                SigningCredentials = new SigningCredentials(new SymmetricSecurityKey(key), SecurityAlgorithms.HmacSha256Signature)
+            };
+            var tokenHandler = new JwtSecurityTokenHandler();
+            var token = tokenHandler.CreateToken(tokenDescriptor);
+            return tokenHandler.WriteToken(token);
+        }
+    }
+}