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using System.Reflection;
using System.Text.Json;
using System.Text.Json.Nodes;
using System.Text.Json.Serialization;
using ArcaneLibs.Extensions;
namespace LibMatrix.EventTypes;
// <T> : MatrixEventContent where T : MatrixEventContent<T>, new() {
/// <summary>
/// Extensible Event Content, aims to provide an API similar to JsonNode/JsonObject
/// <seealso cref="System.Text.Json.Nodes.JsonNode"/>
/// <seealso cref="System.Text.Json.Nodes.JsonObject"/>
/// </summary>
[JsonConverter(typeof(MatrixEventContentConverter<MatrixEventContent>))]
public class MatrixEventContent {
[JsonExtensionData, JsonInclude]
public JsonObject InternalJson { get; set; } = new();
public MatrixEventContent() { }
public MatrixEventContent(JsonNode json) {
InternalJson = json.AsObject();
}
public static implicit operator MatrixEventContent(JsonNode json) => new(json);
// public static implicit operator JsonNode(MatrixEventContent content) => content.InternalJson;
[JsonIgnore]
public IEnumerable<string> EventTypes => this.GetType().GetCustomAttributes<MatrixEventAttribute>().Select(x => x.EventType);
[JsonIgnore]
public string EventType => EventTypes.First();
public JsonNode? this[string key] => InternalJson[key];
public string ToJson() => InternalJson.ToJson();
public class MatrixEventContentConverter<T> : JsonConverter<T> where T : MatrixEventContent, new() {
public override T? Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options) {
// read entire object into a JsonObject
var json = JsonNode.Parse(ref reader);
return new T { InternalJson = json.AsObject() };
}
public override void Write(Utf8JsonWriter writer, T value, JsonSerializerOptions options) {
value.InternalJson.WriteTo(writer);
}
}
}
public class MatrixEventAttribute(string eventType, bool deprecated = false) : Attribute {
public string EventType { get; } = eventType;
public bool Deprecated { get; } = deprecated;
}
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