Use JsonSerializerContext for metadata

Author: usercode

src/ImageWizard.Core/Caches/DistributedCache.cs

@@ -2,6 +2,7 @@
 // https://github.com/usercode/ImageWizard
 // MIT License
 
+using ImageWizard.Core.Json;
 using Microsoft.Extensions.Caching.Distributed;
 using System.Text.Json;
 
@@ -43,7 +44,7 @@ private static string GetMetaKey(string key)
             return null;
         }
 
-        Metadata? metadata = JsonSerializer.Deserialize<Metadata>(json);
+        Metadata? metadata = JsonSerializer.Deserialize(json, ImageWizardJsonSerializerContext.Default.Metadata);
 
         if (metadata == null)
         {
@@ -65,7 +66,7 @@ private static string GetMetaKey(string key)
 
     public async Task WriteAsync(IMetadata metadata, Stream stream)
     {
-        byte[] json = JsonSerializer.SerializeToUtf8Bytes(metadata);
+        byte[] json = JsonSerializer.SerializeToUtf8Bytes(metadata, ImageWizardJsonSerializerContext.Default.Metadata);
 
         await Cache.SetAsync(GetMetaKey(metadata.Key), json);
 

src/ImageWizard.Core/Caches/Files/FileCache.cs

@@ -3,6 +3,7 @@
 // MIT License
 
 using ImageWizard.Cleanup;
+using ImageWizard.Core.Json;
 using Microsoft.AspNetCore.Hosting;
 using Microsoft.Extensions.Options;
 using System.Text.Json;
@@ -14,8 +15,6 @@ namespace ImageWizard.Caches;
 /// </summary>
 public class FileCache : ICache, ICleanupCache, ILastAccessCache
 {
-    protected static readonly JsonSerializerOptions JsonSerializerOptions = new JsonSerializerOptions() { WriteIndented = true };
-
     public FileCache(IOptions<FileCacheOptions> options, IWebHostEnvironment hostingEnvironment, ICacheLock cacheLock)
     {
         Options = options;
@@ -114,7 +113,7 @@ public virtual async Task WriteAsync(IMetadata metadata, Stream stream)
 
         using Stream metadataStream = metaFile.OpenRead();
 
-        Metadata? metadata = await JsonSerializer.DeserializeAsync<Metadata>(metadataStream, JsonSerializerOptions);
+        Metadata? metadata = await JsonSerializer.DeserializeAsync(metadataStream, ImageWizardJsonSerializerContext.Default.Metadata);
 
         return metadata;
     }
@@ -134,7 +133,7 @@ private async Task WriteMetadataAsync(IMetadata metadata)
         //delete existing data
         metadataStream.SetLength(0);
 
-        await JsonSerializer.SerializeAsync(metadataStream, metadata, JsonSerializerOptions);
+        await JsonSerializer.SerializeAsync(metadataStream, metadata, ImageWizardJsonSerializerContext.Default.Metadata);
     }
 
     private void Delete(IMetadata metadata)

src/ImageWizard.Core/Json/ImageWizardJsonSerializerContext.cs

@@ -0,0 +1,17 @@
+// Copyright (c) usercode
+// https://github.com/usercode/ImageWizard
+// MIT License
+
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace ImageWizard.Core.Json;
+
+[JsonSerializable(typeof(Metadata))]
+
+//defaults
+[JsonSourceGenerationOptions(JsonSerializerDefaults.Web, WriteIndented = true)]
+public partial class ImageWizardJsonSerializerContext : JsonSerializerContext
+{
+
+}