import 'package:tencent_im_base/tencent_im_base.dart';
import 'package:tencent_cloud_chat_uikit/business_logic/view_models/tui_chat_global_model.dart';
import 'package:tencent_cloud_chat_uikit/data_services/core/core_services_implements.dart';
import 'package:tencent_cloud_chat_uikit/data_services/message/message_services.dart';
import 'package:tencent_cloud_chat_uikit/data_services/services_locatar.dart';

class TUIChatModelTools {
  final TUIChatGlobalModel globalModel = serviceLocator<TUIChatGlobalModel>();
  final CoreServicesImpl _coreServices = serviceLocator<CoreServicesImpl>();
  final MessageService _messageService = serviceLocator<MessageService>();

  OfflinePushInfo buildMessagePushInfo(
      V2TimMessage message, String convID, ConvType convType) {
    String createJSON(String convID) {
      return "{\"conversationID\": \"$convID\"}";
    }

    String title = globalModel.chatConfig.notificationTitle;

    // If user provides null, use default ext.
    String ext = globalModel.chatConfig.notificationExt != null
        ? globalModel.chatConfig.notificationExt!(message, convID, convType) ??
            (convType == ConvType.c2c
                ? createJSON("c2c_${message.sender}")
                : createJSON("group_$convID"))
        : (convType == ConvType.c2c
            ? createJSON("c2c_${message.sender}")
            : createJSON("group_$convID"));

    String desc = message.userID ?? message.groupID ?? "";
    String messageSummary = "";
    switch (message.elemType) {
      case MessageElemType.V2TIM_ELEM_TYPE_CUSTOM:
        messageSummary = TIM_t("自定义消息");
        break;
      case MessageElemType.V2TIM_ELEM_TYPE_FACE:
        messageSummary = TIM_t("表情消息");
        break;
      case MessageElemType.V2TIM_ELEM_TYPE_FILE:
        messageSummary = TIM_t("文件消息");
        break;
      case MessageElemType.V2TIM_ELEM_TYPE_GROUP_TIPS:
        messageSummary = TIM_t("群提示消息");
        break;
      case MessageElemType.V2TIM_ELEM_TYPE_IMAGE:
        messageSummary = TIM_t("图片消息");
        break;
      case MessageElemType.V2TIM_ELEM_TYPE_LOCATION:
        messageSummary = TIM_t("位置消息");
        break;
      case MessageElemType.V2TIM_ELEM_TYPE_MERGER:
        messageSummary = TIM_t("合并转发消息");
        break;
      case MessageElemType.V2TIM_ELEM_TYPE_SOUND:
        messageSummary = TIM_t("语音消息");
        break;
      case MessageElemType.V2TIM_ELEM_TYPE_TEXT:
        messageSummary = message.textElem!.text!;
        break;
      case MessageElemType.V2TIM_ELEM_TYPE_VIDEO:
        messageSummary = TIM_t("视频消息");
        break;
    }

    if (globalModel.chatConfig.notificationBody != null) {
      desc =
          globalModel.chatConfig.notificationBody!(message, convID, convType) ??
              messageSummary;
    } else {
      desc = messageSummary;
    }

    return OfflinePushInfo.fromJson({
      "title": title,
      "desc": desc,
      "disablePush": false,
      "ext": ext,
      "iOSSound": globalModel.chatConfig.notificationIOSSound,
      "androidSound": globalModel.chatConfig.notificationAndroidSound,
      "ignoreIOSBadge": false,
      "androidOPPOChannelID": globalModel.chatConfig.notificationOPPOChannelID,
    });
  }

  V2TimMessage setUserInfoForMessage(V2TimMessage messageInfo, String? id) {
    final loginUserInfo = _coreServices.loginUserInfo;
    if (loginUserInfo != null) {
      messageInfo.faceUrl = loginUserInfo.faceUrl;
      messageInfo.nickName = loginUserInfo.nickName;
      messageInfo.sender = loginUserInfo.userID;
    }
    messageInfo.timestamp =
        (DateTime.now().millisecondsSinceEpoch / 1000).ceil();
    messageInfo.isSelf = true;
    messageInfo.status = MessageStatus.V2TIM_MSG_STATUS_SENDING;
    messageInfo.id = id;

    return messageInfo;
  }

  Future<V2TimMessage?> getExistingMessageByID(
      {required String msgID,
      required String conversationID,
      required ConvType conversationType}) async {
    final currentHistoryMsgList =
        globalModel.messageListMap[conversationID] ?? [];
    final int? targetIndex = currentHistoryMsgList.indexWhere((item) {
      return item.msgID == msgID;
    });

    if (targetIndex != null &&
        targetIndex != -1 &&
        currentHistoryMsgList.isNotEmpty) {
      List<V2TimMessage> response;
      if (currentHistoryMsgList.length > targetIndex + 2) {
        response = await _messageService.getHistoryMessageList(
            count: 1,
            getType: HistoryMsgGetTypeEnum.V2TIM_GET_LOCAL_NEWER_MSG,
            userID: conversationType == ConvType.c2c ? conversationID : null,
            groupID: conversationType == ConvType.group ? conversationID : null,
            lastMsgID: currentHistoryMsgList[targetIndex + 1].msgID);
      } else {
        response = await _messageService.getHistoryMessageList(
          count: 5,
          getType: HistoryMsgGetTypeEnum.V2TIM_GET_LOCAL_OLDER_MSG,
          userID: conversationType == ConvType.c2c ? conversationID : null,
          groupID: conversationType == ConvType.group ? conversationID : null,
          lastMsgID: currentHistoryMsgList.length - 3 < 0
              ? null
              : currentHistoryMsgList[currentHistoryMsgList.length - 3].msgID,
        );
      }

      try {
        return response.firstWhere((item) {
          return item.msgID == msgID;
        });
      } catch (e) {
        return null;
      }
    } else {
      return null;
    }
  }
}
