Add private membership verification API

Author: LorenzCK

src/Web/Web/Controllers/AdminController.cs

@@ -90,7 +90,7 @@ orderby r.Id ascending
                 sb.AppendLine();
             }
 
-            Response.Headers.TryAdd(HeaderNames.ContentDisposition, new StringValues("attachment; filename=registrations.csv"));
+            Response.Headers.TryAdd(HeaderNames.ContentDisposition, new StringValues("attachment; filename=members.csv"));
 
             return Content(sb.ToString(), "text/csv");
         }

src/Web/Web/Controllers/ApiController.cs

@@ -0,0 +1,75 @@
+using CodeMooc.Web.Data;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.Primitives;
+using Microsoft.Net.Http.Headers;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace CodeMooc.Web.Controllers {
+
+    [Route("api")]
+    [Authorize(Policy = Startup.LegacyBasicAdministratorsPolicyName)]
+    public class ApiController : Controller {
+
+        protected DataContext Database { get; }
+        protected ILogger<ApiController> Logger { get; }
+
+        public ApiController(
+            DataContext database,
+            ILogger<ApiController> logger
+        ) {
+            Database = database;
+            Logger = logger;
+        }
+
+        [HttpPost("members/verify")]
+        public IActionResult VerifyMembership([FromQuery] string email) {
+            Logger.LogInformation(LoggingEvents.Api, "Member verification for mail {0}", email);
+
+            var entry = (from e in Database.Emails
+                         where e.Address == email.ToLowerInvariant().Trim()
+                         select e)
+                         .SingleOrDefault();
+            if(entry == null) {
+                return NotFound();
+            }
+
+            var user = (from u in Database.Registrations
+                        where u.Id == entry.RegistrationId
+                        select u)
+                        .Include(u => u.Emails)
+                        .First();
+            var emails = (from e in user.Emails
+                          orderby e.IsPrimary descending
+                          select e.Address).ToList();
+
+            var badges = (from b in Database.Badges
+                          where b.Type == BadgeType.Member
+                          where emails.Contains(b.Email)
+                          orderby b.Year ascending
+                          select b);
+
+            var memberships = badges.ToDictionary(
+                b => b.Year.Year,
+                b => new {
+                    IssuedOn = b.IssueTimestamp
+                }
+            );
+            return Json(new {
+                user.Id,
+                PrimaryMail = emails[0],
+                RegisteredOn = user.RegistrationTimestamp,
+                IsMember = memberships.ContainsKey(DateTime.UtcNow.Year),
+                Memberships = memberships
+            });
+        }
+
+    }
+
+}

src/Web/Web/LoggingEvents.cs

@@ -14,6 +14,8 @@ public static class LoggingEvents {
 
         public const int Badges = 4000;
 
+        public const int Api = 5000;
+
     }
 
 }

src/Web/Web/appsettings.Development.json

@@ -6,6 +6,7 @@
         "Default": "Trace",
         "System": "Information",
         "Microsoft": "Information",
+        "Microsoft.AspNetCore": "Debug",
         "Microsoft.EntityFrameworkCore.Database": "Information",
         "Microsoft.AspNetCore.StaticFiles": "Warning",
         "Microsoft.AspNetCore.Hosting": "Warning",

src/Web/Web/appsettings.json

@@ -16,7 +16,8 @@
   },
   "StaticUserPasswords": {
     "a.bogliolo": "$2y$12$jU9.9jJzc58TLq5Q1vYSTOuYR.4oLUL/vy006rCU69xP.wPeqqzN2",
-    "codemooc.badges": "$2y$12$SV/SAqEpjehlwZfDO8yP9.GsUdlfM9VSzOi/SoflS8Jq.somCUII2"
+    "codemooc.badges": "$2y$12$SV/SAqEpjehlwZfDO8yP9.GsUdlfM9VSzOi/SoflS8Jq.somCUII2",
+    "api": "$2y$12$Uz3fRK7ihuJ8hr/cqwQgaOdb9oCmlSvGSC/BDHGs20ID2SV9EoDLO"
   },
   "Paths": {
     "Curricula": "/data/curricula",