Small changes to the DB migration

src/Ombi.Store/Migrations/OmbiMySql/20200218230644_MobileDevices.cs

@@ -1,6 +1,6 @@
-using System;
-using Microsoft.EntityFrameworkCore.Metadata;
+using Microsoft.EntityFrameworkCore.Metadata;
 using Microsoft.EntityFrameworkCore.Migrations;
+using System;
 
 namespace Ombi.Store.Migrations.OmbiMySql
 {
@@ -8,14 +8,34 @@ namespace Ombi.Store.Migrations.OmbiMySql
     {
         protected override void Up(MigrationBuilder migrationBuilder)
         {
-            migrationBuilder.Sql(@"CREATE TABLE `MobileDevices` (
-    `Id` int NOT NULL AUTO_INCREMENT,
-    `Token` longtext CHARACTER SET utf8mb4 NULL,
-    `UserId` varchar(255) COLLATE utf8mb4_bin NOT NULL,
-    `AddedAt` datetime(6) NOT NULL,
-    CONSTRAINT `PK_MobileDevices` PRIMARY KEY (`Id`),
-    CONSTRAINT `FK_MobileDevices_AspNetUsers_UserId` FOREIGN KEY (`UserId`) REFERENCES `AspNetUsers` (`Id`) ON DELETE RESTRICT
-);");
+//            migrationBuilder.Sql(@"CREATE TABLE `MobileDevices` (
+//    `Id` int NOT NULL AUTO_INCREMENT,
+//    `Token` longtext CHARACTER SET utf8mb4 NULL,
+//    `UserId` varchar(255) COLLATE utf8mb4_bin NOT NULL,
+//    `AddedAt` datetime(6) NOT NULL,
+//    CONSTRAINT `PK_MobileDevices` PRIMARY KEY (`Id`),
+//    CONSTRAINT `FK_MobileDevices_AspNetUsers_UserId` FOREIGN KEY (`UserId`) REFERENCES `AspNetUsers` (`Id`) ON DELETE RESTRICT
+//);");
+
+            migrationBuilder.CreateTable(
+                name: "MobileDevices",
+                columns: table => new
+                {
+                    Id = table.Column<int>(nullable: false).Annotation("MySql:ValueGenerationStrategy", MySqlValueGenerationStrategy.IdentityColumn),
+                    Token = table.Column<string>(maxLength: 256, nullable: true),
+                    UserId = table.Column<string>(maxLength: 256, nullable: false),
+                    AddedAt = table.Column<DateTime>(maxLength: 256, nullable: false),
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_MobileDevices", x => x.Id);
+                    table.ForeignKey(
+                      name: "FK_MobileDevices_AspNetUsers_UserId",
+                      column: x => x.UserId,
+                      principalTable: "AspNetUsers",
+                      principalColumn: "Id",
+                      onDelete: ReferentialAction.Restrict);
+                });
 
 
             migrationBuilder.CreateIndex(

src/Ombi/Controllers/V2/MobileController.cs

@@ -39,6 +39,10 @@ namespace Ombi.Controllers.V2
 
                 var username = User.Identity.Name.ToUpper();
                 var user = await _userManager.Users.FirstOrDefaultAsync(x => x.NormalizedUserName == username);
+                if (user == null)
+                {
+                    return Ok();
+                }
                 // Check if we already have this notification id
                 var alreadyExists = await _mobileDevices.GetAll().AnyAsync(x => x.Token == body.Token && x.UserId == user.Id);
 
@@ -46,8 +50,14 @@ namespace Ombi.Controllers.V2
                 {
                     return Ok();
                 }
+                // Ensure we don't have too many already for this user
+                var tokens = await _mobileDevices.GetAll().Where(x => x.UserId == user.Id).OrderBy(x => x.AddedAt).ToListAsync();
+                if (tokens.Count() > 5)
+                {
+                    var toDelete = tokens.Take(tokens.Count() - 5);
+                    await _mobileDevices.DeleteRange(toDelete);
+                }
 
-                // let's add it
                 await _mobileDevices.Add(new MobileDevices
                 {
                     Token = body.Token,