Fix graphql api with parameters

src/OrchardCore.Modules/OrchardCore.Apis.GraphQL/GraphQLMiddleware.cs

@@ -4,7 +4,6 @@
 using System.Net;
 using System.Net.Mime;
 using System.Text;
-using System.Text.Json;
 using System.Threading.Tasks;
 using GraphQL;
 using GraphQL.Execution;
@@ -28,6 +27,7 @@ namespace OrchardCore.Apis.GraphQL
     public class GraphQLMiddleware : IMiddleware
     {
         private readonly GraphQLSettings _settings;
+        private readonly IGraphQLTextSerializer _graphQLTextSerializer;
         private readonly IGraphQLSerializer _serializer;
         private readonly IDocumentExecuter _executer;
         internal static readonly Encoding _utf8Encoding = new UTF8Encoding(false);
@@ -37,11 +37,13 @@ public class GraphQLMiddleware : IMiddleware
         public GraphQLMiddleware(
             IOptions<GraphQLSettings> settingsOption,
             IDocumentExecuter executer,
-            IGraphQLSerializer serializer)
+            IGraphQLSerializer serializer,
+            IGraphQLTextSerializer graphQLTextSerializer)
         {
             _settings = settingsOption.Value;
             _executer = executer;
             _serializer = serializer;
+            _graphQLTextSerializer = graphQLTextSerializer;
         }
         public async Task InvokeAsync(HttpContext context, RequestDelegate next)
         {
@@ -89,19 +91,17 @@ private async Task ExecuteAsync(HttpContext context)
 
                     if (mediaType.IsSubsetOf(_jsonMediaType) || mediaType.IsSubsetOf(_graphQlMediaType))
                     {
-
+                        using var sr = new StreamReader(context.Request.Body);
                         if (mediaType.IsSubsetOf(_graphQlMediaType))
                         {
-                            using var sr = new StreamReader(context.Request.Body);
-
                             request = new GraphQLNamedQueryRequest
                             {
                                 Query = await sr.ReadToEndAsync()
                             };
                         }
                         else
                         {
-                            request = await JsonSerializer.DeserializeAsync<GraphQLNamedQueryRequest>(context.Request.Body, JOptions.CamelCase);
+                            request = _graphQLTextSerializer.Deserialize<GraphQLNamedQueryRequest>(await sr.ReadToEndAsync());
                         }
                     }
                     else
@@ -171,7 +171,7 @@ private async Task ExecuteAsync(HttpContext context)
             await _serializer.WriteAsync(context.Response.Body, result);
         }
 
-        private static GraphQLNamedQueryRequest CreateRequestFromQueryString(HttpContext context, bool validateQueryKey = false)
+        private GraphQLNamedQueryRequest CreateRequestFromQueryString(HttpContext context, bool validateQueryKey = false)
         {
             if (!context.Request.Query.ContainsKey("query"))
             {
@@ -190,7 +190,7 @@ private static GraphQLNamedQueryRequest CreateRequestFromQueryString(HttpContext
 
             if (context.Request.Query.ContainsKey("variables"))
             {
-                request.Variables = JsonSerializer.Deserialize<Inputs>(context.Request.Query["variables"], JOptions.CamelCase);
+                request.Variables = _graphQLTextSerializer.Deserialize<Inputs>(context.Request.Query["variables"]);
             }
 
             if (context.Request.Query.ContainsKey("operationName"))

src/OrchardCore.Modules/OrchardCore.Apis.GraphQL/Json/GraphQLNamedQueryRequestJsonConverter.cs

@@ -0,0 +1,121 @@
+using System;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+using GraphQL;
+
+namespace OrchardCore.Apis.GraphQL.Json;
+
+public class GraphQLNamedQueryRequestJsonConverter : JsonConverter<GraphQLNamedQueryRequest>
+{
+    public static readonly GraphQLNamedQueryRequestJsonConverter Instance = new();
+
+    /// <summary>
+    /// Name for the operation name parameter.
+    /// See https://github.com/graphql/graphql-over-http/blob/master/spec/GraphQLOverHTTP.md#request-parameters
+    /// </summary>
+    private const string _operationNameKey = "operationName";
+
+    /// <summary>
+    /// Name for the query parameter.
+    /// See https://github.com/graphql/graphql-over-http/blob/master/spec/GraphQLOverHTTP.md#request-parameters
+    /// </summary>
+    private const string _queryKey = "query";
+
+    /// <summary>
+    /// Name for the variables parameter.
+    /// See https://github.com/graphql/graphql-over-http/blob/master/spec/GraphQLOverHTTP.md#request-parameters
+    /// </summary>
+    private const string _variablesKey = "variables";
+
+    /// <summary>
+    /// Name for the extensions parameter.
+    /// See https://github.com/graphql/graphql-over-http/blob/master/spec/GraphQLOverHTTP.md#request-parameters
+    /// </summary>
+    private const string _extensionsKey = "extensions";
+
+    private const string _namedQueryKey = "namedQuery";
+
+
+    public override void Write(Utf8JsonWriter writer, GraphQLNamedQueryRequest value, JsonSerializerOptions options)
+    {
+        writer.WriteStartObject();
+        if (value.Query != null)
+        {
+            writer.WritePropertyName(_queryKey);
+            writer.WriteStringValue(value.Query);
+        }
+        if (value.OperationName != null)
+        {
+            writer.WritePropertyName(_operationNameKey);
+            writer.WriteStringValue(value.OperationName);
+        }
+        if (value.Variables != null)
+        {
+            writer.WritePropertyName(_variablesKey);
+            JsonSerializer.Serialize(writer, value.Variables, options);
+        }
+        if (value.Extensions != null)
+        {
+            writer.WritePropertyName(_extensionsKey);
+            JsonSerializer.Serialize(writer, value.Extensions, options);
+        }
+        if (value.NamedQuery != null)
+        {
+            writer.WritePropertyName(_namedQueryKey);
+            JsonSerializer.Serialize(writer, value.NamedQuery, options);
+        }
+        writer.WriteEndObject();
+    }
+
+    public override GraphQLNamedQueryRequest Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
+    {
+        if (reader.TokenType != JsonTokenType.StartObject)
+            throw new JsonException();
+
+        var request = new GraphQLNamedQueryRequest();
+
+        while (reader.Read())
+        {
+            if (reader.TokenType == JsonTokenType.EndObject)
+            {
+                return request;
+            }
+
+            if (reader.TokenType != JsonTokenType.PropertyName)
+            {
+                throw new JsonException();
+            }
+
+            string key = reader.GetString()!;
+
+            //unexpected end of data
+            if (!reader.Read())
+                throw new JsonException();
+
+            switch (key)
+            {
+                case _queryKey:
+                    request.Query = reader.GetString()!;
+                    break;
+                case _operationNameKey:
+                    request.OperationName = reader.GetString()!;
+                    break;
+                case _namedQueryKey:
+                    request.NamedQuery = reader.GetString();
+                    break;
+                case _variablesKey:
+                    request.Variables = JsonSerializer.Deserialize<Inputs>(ref reader, options);
+                    break;
+                case _extensionsKey:
+                    request.Extensions = JsonSerializer.Deserialize<Inputs>(ref reader, options);
+                    break;
+                default:
+                    reader.Skip();
+                    break;
+            }
+        }
+
+        //unexpected end of data
+        throw new JsonException();
+    }
+}

src/OrchardCore.Modules/OrchardCore.Apis.GraphQL/Startup.cs

@@ -9,9 +9,13 @@
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Hosting;
 using Microsoft.Extensions.Options;
+using OrchardCore.Apis.GraphQL.Json;
 using OrchardCore.Apis.GraphQL.Services;
 using OrchardCore.Apis.GraphQL.ValidationRules;
 using OrchardCore.Environment.Shell.Configuration;
+using OrchardCore.Extensions;
+using OrchardCore.Json;
+using OrchardCore.Json.Extensions;
 using OrchardCore.Modules;
 using OrchardCore.Navigation;
 using OrchardCore.Security.Permissions;
@@ -46,7 +50,19 @@ public override void ConfigureServices(IServiceCollection services)
             services.AddScoped<IPermissionProvider, Permissions>();
             services.AddTransient<INavigationProvider, AdminMenu>();
             services.AddSingleton<GraphQLMiddleware>();
-            services.AddGraphQL(builder => builder.AddSystemTextJson());
+            services.Configure<ContentSerializerJsonOptionsConfiguration>(options =>
+            {
+
+            });
+
+            services.AddGraphQL(builder => builder.AddSystemTextJson((options, sp) =>
+            {
+                // Common types of converters are already configured in the assembly "GraphQL.SystemTextJson".
+                options.Converters.Add(GraphQLNamedQueryRequestJsonConverter.Instance);
+
+                var contentSerializerJsonOptions = sp.GetRequiredService<IOptions<ContentSerializerJsonOptions>>().Value;
+                options.Merge(contentSerializerJsonOptions.SerializerOptions);
+            }));
 
             services.AddOptions<GraphQLSettings>().Configure<IShellConfiguration>((c, configuration) =>
             {