IM_NEW/MessageService.WebApi/Application/Dtos/MessageResponse.cs

using MessageService.Domain.Enums;

namespace MessageService.WebApi.Application.Dtos
{
    public record MessageResponse
    {
        public Guid Id { get; init; }
        public Guid ClientMsgId { get; init; }
        public ChatType ChatType { get; init; }
        public MessageType MsgType { get; init; }
        public Guid SenderId { get; init; }
        public Guid TargetId { get; init; }
        public MessageState State { get; init; }
        public string StreamKey { get; init; }
        public long SequenceId { get; init; }
        public DateTimeOffset CreationTime { get; init; }

        // 关键：展开 Content
        public MessageContentResponse Content { get; init; }
    }

    public record MessageContentResponse(
        string Fallback,
        object Body, // 已经是反序列化后的具体对象
        Dictionary<string, string> Ext,
        QuoteInfoResponse? Quote
    );

    public record QuoteInfoResponse(
        Guid MessageId,
        Guid SenderId,
        string SenderName,
        MessageType MessageType,
        string Preview
    );
}