Migrate from Newtonsoft.Json to System.Text.Json

Tailspin.SpaceGame.Web/LocalDocumentDBRepository.cs

@@ -4,7 +4,7 @@
 using System.Linq;
 using System.Linq.Expressions;
 using System.Threading.Tasks;
-using Newtonsoft.Json;
+using System.Text.Json;
 using TailSpin.SpaceGame.Web.Models;
 
 namespace TailSpin.SpaceGame.Web
@@ -17,7 +17,7 @@ public class LocalDocumentDBRepository<T> : IDocumentDBRepository<T> where T : M
         public LocalDocumentDBRepository(string fileName)
         {
             // Serialize the items from the provided JSON document.
-            _items = JsonConvert.DeserializeObject<List<T>>(File.ReadAllText(fileName));
+            _items = JsonSerializer.Deserialize<List<T>>(File.ReadAllText(fileName));
         }
 
         /// <summary>

Tailspin.SpaceGame.Web/Models/Model.cs

@@ -1,4 +1,4 @@
-using Newtonsoft.Json;
+using System.Text.Json.Serialization;
 
 namespace TailSpin.SpaceGame.Web.Models
 {
@@ -8,7 +8,7 @@ namespace TailSpin.SpaceGame.Web.Models
     public abstract class Model
     {
         // The value that uniquely identifies this object.
-        [JsonProperty(PropertyName = "id")]
+        [JsonPropertyName("id")]
         public string Id { get; set; }
     }
 }

Tailspin.SpaceGame.Web/Models/Profile.cs

@@ -1,19 +1,19 @@
-using Newtonsoft.Json;
+using System.Text.Json.Serialization;
 
 namespace TailSpin.SpaceGame.Web.Models
 {
     public class Profile : Model
     {
         // The player's user name.
-        [JsonProperty(PropertyName = "userName")]
+        [JsonPropertyName("userName")]
         public string UserName { get; set; }
 
         // The URL of the player's avatar image.
-        [JsonProperty(PropertyName = "avatarUrl")]
+        [JsonPropertyName("avatarUrl")]
         public string AvatarUrl { get; set; }
 
         // The achievements the player earned.
-        [JsonProperty(PropertyName = "achievements")]
+        [JsonPropertyName("achievements")]
         public string[] Achievements { get; set; }
     }
 }

Tailspin.SpaceGame.Web/Models/Score.cs

@@ -1,23 +1,23 @@
-using Newtonsoft.Json;
+using System.Text.Json.Serialization;
 
 namespace TailSpin.SpaceGame.Web.Models
 {
     public class Score : Model
     {
         // The ID of the player profile associated with this score.
-        [JsonProperty(PropertyName = "profileId")]
+        [JsonPropertyName("profileId")]
         public string ProfileId { get; set; }
 
         // The score value.
-        [JsonProperty(PropertyName = "score")]
+        [JsonPropertyName("score")]
         public int HighScore { get; set; }
 
         // The game mode the score is associated with.
-        [JsonProperty(PropertyName = "gameMode")]
+        [JsonPropertyName("gameMode")]
         public string GameMode { get; set; }
 
         // The game region (map) the score is associated with.
-        [JsonProperty(PropertyName = "gameRegion")]
+        [JsonPropertyName("gameRegion")]
         public string GameRegion { get; set; }
     }
 }

Tailspin.SpaceGame.Web/Tailspin.SpaceGame.Web.csproj

@@ -5,12 +5,6 @@
     <ProjectGuid>{A0C4E31E-AC75-4F39-9F59-0AA19D9B8F46}</ProjectGuid>
   </PropertyGroup>
 
-  <ItemGroup>
-    <!-- <PackageReference Include="Microsoft.AspNetCore.App" /> -->
-    <!-- <PackageReference Include="Microsoft.AspNetCore.Razor.Design" Version="2.1.2" PrivateAssets="All" /> -->
-    <PackageReference Include="Newtonsoft.Json" Version="12.0.1" />
-  </ItemGroup>
-
   <ItemGroup>
     <Folder Include="wwwroot\images\avatars\" />
   </ItemGroup>