#58 replace of Newtonsoft with System.Text.Json

Author: totpero

DeviceDetector.NET/Cache/ParseCache.cs

@@ -1,24 +1,21 @@
 using LiteDB;
-using Newtonsoft.Json;
 using System;
 using System.IO;
 using Microsoft.Extensions.Logging;
+using DeviceDetectorNET.JsonSerializer;
 namespace DeviceDetectorNET.Cache
 {
     internal class ParseCache : IParseCache
     {
-        private ParseCache()
-        {
-        }
 
         private static readonly Lazy<ParseCache> LazyCache = new Lazy<ParseCache>(InitializeCache);
         private LiteDatabase _cacheDatabase;
+        private IJsonSerializerProvider _jsonSerializer;
 
-        private static readonly JsonSerializerSettings JsonSettings = new JsonSerializerSettings
+        private ParseCache()
         {
-            ContractResolver = null,
-            TypeNameHandling = TypeNameHandling.Auto
-        };
+            _jsonSerializer = new SystemTextJsonSerializerProvider();
+        }
 
         private static ParseCache InitializeCache()
         {
@@ -67,7 +64,7 @@ public DeviceDetectorCachedData FindById(string key)
 
             if (string.IsNullOrEmpty(cachedData?.Json)) return null;
 
-            var data = JsonConvert.DeserializeObject<DeviceDetectorCachedData>(cachedData.Json, JsonSettings);
+            var data = _jsonSerializer.Deserialize<DeviceDetectorCachedData>(cachedData.Json);
             return data;
         }
 
@@ -76,7 +73,7 @@ public void Upsert(string key, DeviceDetectorCachedData data)
             var cachedData = new CachedDataHolder()
             {
                 Id = key,
-                Json = JsonConvert.SerializeObject(data, JsonSettings),
+                Json = _jsonSerializer.Serialize(data),
                 ExpirationDate = DateTime.UtcNow.Add(DeviceDetectorSettings.ParseCacheDBExpiration)
             };
 

DeviceDetector.NET/DeviceDetector.NET.csproj

@@ -38,7 +38,7 @@
   <ItemGroup>
     <PackageReference Include="LiteDB" Version="5.0.21" />
     <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="6.0.0" />
-    <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
+	<PackageReference Include="System.Text.Json" Version="6.0.5" />
     <PackageReference Include="YamlDotNet" Version="16.0.0" />
   </ItemGroup>
 

DeviceDetector.NET/JsonSerializer/IJsonSerializerProvider.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace DeviceDetectorNET.JsonSerializer
+{
+    public interface IJsonSerializerProvider
+    {
+        bool CanHandle(Type type);
+        string Serialize(object obj, bool camelCase = true, bool indented = false);
+        T Deserialize<T>(string jsonString, bool camelCase = true);
+        object Deserialize(Type type, string jsonString, bool camelCase = true);
+    }
+}

DeviceDetector.NET/JsonSerializer/SystemTextJsonSerializerProvider.cs

@@ -0,0 +1,45 @@
+using System;
+using System.Text.Json;
+
+namespace DeviceDetectorNET.JsonSerializer
+{
+    public class SystemTextJsonSerializerProvider : IJsonSerializerProvider
+    {
+        public bool CanHandle(Type type)
+        {
+            return true;
+        }
+
+        public T Deserialize<T>(string jsonString, bool camelCase = true)
+        {
+            return System.Text.Json.JsonSerializer.Deserialize<T>(jsonString, CreateJsonSerializerOptions(camelCase));
+        }
+
+        public object Deserialize(Type type, string jsonString, bool camelCase = true)
+        {
+            return System.Text.Json.JsonSerializer.Deserialize(jsonString, type, CreateJsonSerializerOptions(camelCase));
+        }
+
+        public string Serialize(object obj, bool camelCase = true, bool indented = false)
+        {
+            return System.Text.Json.JsonSerializer.Serialize(obj, CreateJsonSerializerOptions(camelCase, indented));
+        }
+
+        protected virtual JsonSerializerOptions CreateJsonSerializerOptions(bool camelCase = true, bool indented = false)
+        {
+            var settings = new JsonSerializerOptions();
+
+            if (camelCase)
+            {
+                settings.PropertyNamingPolicy = JsonNamingPolicy.CamelCase;
+            }
+
+            if (indented)
+            {
+                settings.WriteIndented = true;
+            }
+
+            return settings;
+        }
+    }
+}