import 'dart:convert';

import 'package:tencent_cloud_chat_sdk/enum/message_elem_type.dart';
import 'package:tencent_cloud_chat_sdk/models/v2_tim_message.dart';

String parseMessageSummary(V2TimMessage msg) {
  switch (msg.elemType) {
    case MessageElemType.V2TIM_ELEM_TYPE_TEXT:
      return msg.textElem?.text ?? '[文本消息]';
    case MessageElemType.V2TIM_ELEM_TYPE_IMAGE:
      return '[图片]';
    case MessageElemType.V2TIM_ELEM_TYPE_SOUND:
      return '[语音]';
    case MessageElemType.V2TIM_ELEM_TYPE_VIDEO:
      return '[视频]';
    case MessageElemType.V2TIM_ELEM_TYPE_FILE:
      return '[文件]';
    case MessageElemType.V2TIM_ELEM_TYPE_LOCATION:
      return '[位置]';
    case MessageElemType.V2TIM_ELEM_TYPE_FACE:
      return '[表情]';
    case MessageElemType.V2TIM_ELEM_TYPE_CUSTOM:
      return _parseCustomMessage(msg.customElem?.data);
    case MessageElemType.V2TIM_ELEM_TYPE_MERGER:
      return '[合并转发消息]';
    case MessageElemType.V2TIM_ELEM_TYPE_GROUP_TIPS:
      return '[群提示]';
    default:
      return '[未知消息类型]';
  }
}

String _parseCustomMessage(String? data) {
  if (data == null || data.isEmpty) return '[自定义消息]';

  try {
    final jsonData = json.decode(data);
    final type = jsonData['type'];
    switch (type) {
      case 'interaction':
        return '[互动] ${jsonData['action'] ?? ''}';
      case 'forward':
        return '[转发] ${jsonData['title'] ?? ''}';
      default:
        return '[自定义消息]';
    }
  } catch (_) {
    return '[自定义消息]';
  }
}