1 files changed, 90 insertions, 0 deletions
diff --git a/src/Jellyfin.Extensions/Json/JsonDefaults.cs b/src/Jellyfin.Extensions/Json/JsonDefaults.cs
new file mode 100644
index 000000000..f4ec91123
--- /dev/null
+++ b/src/Jellyfin.Extensions/Json/JsonDefaults.cs
@@ -0,0 +1,90 @@
+using System.Text.Json;
+using System.Text.Json.Serialization;
+using Jellyfin.Extensions.Json.Converters;
+
+namespace Jellyfin.Extensions.Json
+{
+    /// <summary>
+    /// Helper class for having compatible JSON throughout the codebase.
+    /// </summary>
+    public static class JsonDefaults
+    {
+        /// <summary>
+        /// Pascal case json profile media type.
+        /// </summary>
+        public const string PascalCaseMediaType = "application/json; profile=\"PascalCase\"";
+
+        /// <summary>
+        /// Camel case json profile media type.
+        /// </summary>
+        public const string CamelCaseMediaType = "application/json; profile=\"CamelCase\"";
+
+        /// <summary>
+        /// When changing these options, update
+        ///  Jellyfin.Server/Extensions/ApiServiceCollectionExtensions.cs
+        ///   -> AddJellyfinApi
+        ///    -> AddJsonOptions.
+        /// </summary>
+        private static readonly JsonSerializerOptions _jsonSerializerOptions = new ()
+        {
+            ReadCommentHandling = JsonCommentHandling.Disallow,
+            WriteIndented = false,
+            DefaultIgnoreCondition = JsonIgnoreCondition.WhenWritingNull,
+            NumberHandling = JsonNumberHandling.AllowReadingFromString,
+            Converters =
+            {
+                new JsonGuidConverter(),
+                new JsonNullableGuidConverter(),
+                new JsonVersionConverter(),
+                new JsonStringEnumConverter(),
+                new JsonNullableStructConverterFactory(),
+                new JsonBoolNumberConverter(),
+                new JsonDateTimeConverter(),
+                new JsonStringConverter()
+            }
+        };
+
+        private static readonly JsonSerializerOptions _pascalCaseJsonSerializerOptions = new (_jsonSerializerOptions)
+        {
+            PropertyNamingPolicy = null
+        };
+
+        private static readonly JsonSerializerOptions _camelCaseJsonSerializerOptions = new (_jsonSerializerOptions)
+        {
+            PropertyNamingPolicy = JsonNamingPolicy.CamelCase
+        };
+
+        /// <summary>
+        /// Gets the default <see cref="JsonSerializerOptions" /> options.
+        /// </summary>
+        /// <remarks>
+        /// The return value must not be modified.
+        /// If the defaults must be modified the author must use the copy constructor.
+        /// </remarks>
+        /// <returns>The default <see cref="JsonSerializerOptions" /> options.</returns>
+        public static JsonSerializerOptions Options
+            => _jsonSerializerOptions;
+
+        /// <summary>
+        /// Gets camelCase json options.
+        /// </summary>
+        /// <remarks>
+        /// The return value must not be modified.
+        /// If the defaults must be modified the author must use the copy constructor.
+        /// </remarks>
+        /// <returns>The camelCase <see cref="JsonSerializerOptions" /> options.</returns>
+        public static JsonSerializerOptions CamelCaseOptions
+            => _camelCaseJsonSerializerOptions;
+
+        /// <summary>
+        /// Gets PascalCase json options.
+        /// </summary>
+        /// <remarks>
+        /// The return value must not be modified.
+        /// If the defaults must be modified the author must use the copy constructor.
+        /// </remarks>
+        /// <returns>The PascalCase <see cref="JsonSerializerOptions" /> options.</returns>
+        public static JsonSerializerOptions PascalCaseOptions
+            => _pascalCaseJsonSerializerOptions;
+    }
+}