Replacing Newtonsoft.Json with System.Text.Json (experimental)

2024-09-25 16:56:03 +02:00
parent f21dec5f1c
commit 0e8e96f2d8
8 changed files with 248 additions and 25 deletions
@@ -0,0 +1,155 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace TelegramBotBase.States.Converter
+{
+    public class DictionaryObjectJsonConverter : JsonConverter<Dictionary<string, object>>
+    {
+        public override Dictionary<string, object> Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
+        {
+            var dictionary = new Dictionary<string, object>();
+            var jsonDocument = JsonDocument.ParseValue(ref reader);
+
+            foreach (var element in jsonDocument.RootElement.EnumerateObject())
+            {
+                switch (element.Value.ValueKind)
+                {
+                    case JsonValueKind.String:
+                        dictionary[element.Name] = element.Value.GetString();
+                        break;
+                    case JsonValueKind.Number:
+
+                        if (element.Value.TryGetInt32(out var number))
+                        {
+                            dictionary[element.Name] = number;
+                            continue;
+                        }
+
+                        if (element.Value.TryGetInt64(out long l))
+                            dictionary[element.Name] = l;
+                        else
+                            dictionary[element.Name] = element.Value.GetDouble();
+                        break;
+                    case JsonValueKind.True:
+                    case JsonValueKind.False:
+                        dictionary[element.Name] = element.Value.GetBoolean();
+                        break;
+                    case JsonValueKind.Object:
+                        dictionary[element.Name] = JsonSerializer.Deserialize<Dictionary<string, object>>(element.Value.GetRawText(), options);
+                        break;
+                    case JsonValueKind.Array:
+
+                        dictionary[element.Name] = HandleArray(element.Value);
+
+                        break;
+                    default:
+                        dictionary[element.Name] = element.Value.GetRawText();
+                        break;
+                }
+            }
+
+            return dictionary;
+        }
+
+
+
+        private object HandleArray(JsonElement jsonArray)
+        {
+            // Hier wird geprüft, ob alle Elemente einer bestimmten Art angehören (z. B. int, string)
+            if (jsonArray.GetArrayLength() > 0)
+            {
+                var firstElement = jsonArray[0];
+                switch (firstElement.ValueKind)
+                {
+                    case JsonValueKind.Number:
+                        // Prüfen, ob alle Elemente ganze Zahlen sind
+                        var isIntArray = true;
+                        var isLongArray = false;
+
+                        foreach (var element in jsonArray.EnumerateArray())
+                        {
+                            if (!element.TryGetInt32(out _))
+                            {
+                                isIntArray = false;
+                                isLongArray = true;
+                                if (!element.TryGetInt64(out _))
+                                {
+                                    isLongArray = false;
+                                    break;
+                                }
+                            }
+                        }
+                        if (isIntArray)
+                        {
+                            var list = new List<int>();
+                            foreach (var element in jsonArray.EnumerateArray())
+                            {
+                                list.Add(element.GetInt32());
+                            }
+                            return list;
+                        }
+                        else if (isLongArray)
+                        {
+                            var list = new List<long>();
+                            foreach (var element in jsonArray.EnumerateArray())
+                            {
+                                list.Add(element.GetInt64());
+                            }
+                            return list;
+                        }
+                        else
+                        {
+                            var list = new List<double>();
+                            foreach (var element in jsonArray.EnumerateArray())
+                            {
+                                list.Add(element.GetDouble());
+                            }
+                            return list;
+                        }
+                    case JsonValueKind.String:
+                        var stringList = new List<string>();
+                        foreach (var element in jsonArray.EnumerateArray())
+                        {
+                            stringList.Add(element.GetString());
+                        }
+                        return stringList;
+                    case JsonValueKind.True:
+                    case JsonValueKind.False:
+                        var boolList = new List<bool>();
+                        foreach (var element in jsonArray.EnumerateArray())
+                        {
+                            boolList.Add(element.GetBoolean());
+                        }
+                        return boolList;
+                    default:
+                        // Fallback: Liste von Objekten (z. B. wenn es sich um komplexe Objekte handelt)
+                        var objectList = new List<object>();
+                        foreach (var element in jsonArray.EnumerateArray())
+                        {
+                            objectList.Add(JsonSerializer.Deserialize<object>(element.GetRawText()));
+                        }
+                        return objectList;
+                }
+            }
+
+            // Leeres Array als Liste von Objekten zurückgeben
+            return new List<object>();
+        }
+
+        public override void Write(Utf8JsonWriter writer, Dictionary<string, object> value, JsonSerializerOptions options)
+        {
+            writer.WriteStartObject();
+
+            foreach (var kvp in value)
+            {
+                writer.WritePropertyName(kvp.Key);
+                JsonSerializer.Serialize(writer, kvp.Value, kvp.Value?.GetType() ?? typeof(object), options);
+            }
+
+            writer.WriteEndObject();
+        }
+    }
+}
@@ -0,0 +1,37 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace TelegramBotBase.States.Converter
+{
+    public class JsonTypeConverter : JsonConverter<object>
+    {
+
+        public override object Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
+        {
+            var jsonDocument = JsonDocument.ParseValue(ref reader);
+            var type = Type.GetType(jsonDocument.RootElement.GetProperty("$type").GetString());
+            var jsonObject = jsonDocument.RootElement.GetRawText();
+            return JsonSerializer.Deserialize(jsonObject, type, options);
+        }
+
+        public override void Write(Utf8JsonWriter writer, object value, JsonSerializerOptions options)
+        {
+            writer.WriteStartObject();
+            writer.WriteString("$type", value.GetType().AssemblyQualifiedName);
+
+            var json = JsonSerializer.Serialize(value, value.GetType(), options);
+            using var jsonDoc = JsonDocument.Parse(json);
+            foreach (var property in jsonDoc.RootElement.EnumerateObject())
+            {
+                property.WriteTo(writer);
+            }
+
+            writer.WriteEndObject();
+        }
+
+
+    }
+}