refactoring for integration

src/Yavsc.Api/Controllers/NativeConfidentialController.cs

@@ -0,0 +1,72 @@
+
+using System;
+using System.Linq;
+using System.Security.Claims;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.Extensions.Logging;
+using Yavsc.Helpers;
+using Yavsc.Models;
+using Yavsc.Models.Identity;
+using Yavsc.Server.Helpers;
+
+[Authorize, Route("~/api/gcm")]
+public class NativeConfidentialController : Controller
+{
+    readonly ILogger _logger;
+    readonly ApplicationDbContext _context;
+
+    public NativeConfidentialController(ApplicationDbContext context,
+     ILoggerFactory loggerFactory)
+    {
+        _logger = loggerFactory.CreateLogger<NativeConfidentialController>();
+        _context = context;
+    }
+    /// <summary>
+    /// This is not a method supporting user creation.
+    /// It only registers Google Clood Messaging id.
+    /// </summary>
+    /// <param name="declaration"></param>
+    /// <returns></returns>
+    [Authorize, HttpPost("register")]
+    public IActionResult Register(
+        [FromBody] DeviceDeclaration declaration)
+    {
+      var uid = User.FindFirstValue(ClaimTypes.NameIdentifier);
+      if (uid == null)
+        throw new InvalidOperationException("no name identifier from claims");
+      if (!ModelState.IsValid)
+      {
+        _logger.LogError("Invalid model for GCMD");
+        return new BadRequestObjectResult(ModelState);
+      }
+      declaration.LatestActivityUpdate = DateTime.Now;
+
+      _logger.LogInformation($"Registering device with id:{declaration.DeviceId} for {uid}");
+        DeviceDeclaration? alreadyRegisteredDevice = _context.DeviceDeclaration.FirstOrDefault(d => d.DeviceId == declaration.DeviceId);
+      var deviceAlreadyRegistered = (alreadyRegisteredDevice!=null);
+      if (alreadyRegisteredDevice==null)
+      {
+        declaration.DeclarationDate = DateTime.Now;
+        declaration.DeviceOwnerId = uid;
+        _context.DeviceDeclaration.Add(declaration);
+      }
+      else {
+        alreadyRegisteredDevice.DeviceOwnerId = uid;
+        alreadyRegisteredDevice.Model = declaration.Model;
+        alreadyRegisteredDevice.Platform = declaration.Platform;
+        alreadyRegisteredDevice.Version = declaration.Version;
+        _context.Update(alreadyRegisteredDevice);
+        _context.SaveChanges(User.GetUserId());
+      }
+        
+        _context.SaveChanges(User.GetUserId());
+    
+      var latestActivityUpdate = _context.Activities.Max(a=>a.DateModified);
+      return Json(new { 
+          IsAnUpdate = deviceAlreadyRegistered, 
+          UpdateActivities = latestActivityUpdate != declaration.LatestActivityUpdate
+          });
+    }
+
+}