NapCatQQ/packages/napcat-onebot/action/group/GetGroupEssence.ts

import { ChatType, Peer } from 'napcat-core';
import { OneBotAction } from '@/napcat-onebot/action/OneBotAction';
import { ActionName } from '@/napcat-onebot/action/router';
import { MessageUnique } from 'napcat-common/src/message-unique';
import crypto from 'crypto';
import { Static, Type } from '@sinclair/typebox';
import { NetworkAdapterConfig } from '@/napcat-onebot/config/config';

const SchemaData = Type.Object({
  group_id: Type.Union([Type.Number(), Type.String()]),
});

type Payload = Static<typeof SchemaData>;

export class GetGroupEssence extends OneBotAction<Payload, unknown> {
  override actionName = ActionName.GoCQHTTP_GetEssenceMsg;
  override payloadSchema = SchemaData;

  private async msgSeqToMsgId (peer: Peer, msgSeq: string, msgRandom: string) {
    const replyMsgList = (await this.core.apis.MsgApi.getMsgsBySeqAndCount(peer, msgSeq, 1, true, true)).msgList.find((msg) => msg.msgSeq === msgSeq && msg.msgRandom === msgRandom);
    if (!replyMsgList) {
      return undefined;
    }
    return {
      id: MessageUnique.createUniqueMsgId(peer, replyMsgList.msgId),
      msg: replyMsgList,
    };
  }

  async _handle (payload: Payload, _adapter: string, config: NetworkAdapterConfig) {
    const msglist = (await this.core.apis.WebApi.getGroupEssenceMsgAll(payload.group_id.toString()))
      .flatMap((e) => e?.data?.msg_list)
    // 在群精华回空的时候会出现[null]的情况~ https://github.com/NapNeko/NapCatQQ/issues/1334
      .filter(Boolean);
    if (!msglist) {
      throw new Error('获取失败');
    }
    return await Promise.all(msglist.map(async (msg) => {
      const msgOriginData = await this.msgSeqToMsgId({
        chatType: ChatType.KCHATTYPEGROUP,
        peerUid: payload.group_id.toString(),
      }, msg.msg_seq.toString(), msg.msg_random.toString());
      if (msgOriginData) {
        const { id: message_id, msg: rawMessage } = msgOriginData;
        return {
          msg_seq: msg.msg_seq,
          msg_random: msg.msg_random,
          sender_id: +msg.sender_uin,
          sender_nick: msg.sender_nick,
          operator_id: +msg.add_digest_uin,
          operator_nick: msg.add_digest_nick,
          message_id,
          operator_time: msg.add_digest_time,
          content: (await this.obContext.apis.MsgApi.parseMessage(rawMessage, config.messagePostFormat))?.message,
        };
      }
      const msgTempData = JSON.stringify({
        msg_seq: msg.msg_seq.toString(),
        msg_random: msg.msg_random.toString(),
        group_id: payload.group_id.toString(),
      });
      const hash = crypto.createHash('md5').update(msgTempData).digest();
      // 设置第一个bit为0 保证shortId为正数
      if (hash[0]) {
        hash[0] &= 0x7f;
      }
      const shortId = hash.readInt32BE(0);
      this.core.apis.GroupApi.essenceLRU.set(shortId, msgTempData);
      return {
        msg_seq: msg.msg_seq,
        msg_random: msg.msg_random,
        sender_id: +msg.sender_uin,
        sender_nick: msg.sender_nick,
        operator_id: +msg.add_digest_uin,
        operator_nick: msg.add_digest_nick,
        message_id: shortId,
        operator_time: msg.add_digest_time,
        content: msg.msg_content.map((msg) => {
          if (msg.msg_type === 1) {
            return {
              type: 'text',
              data: {
                text: msg?.text,
              },
            };
          } else if (msg.msg_type === 3) {
            return {
              type: 'image',
              data: {
                url: msg?.image_url,
              },
            };
          }
          return undefined;
        }).filter(e => e !== undefined),
      };
    }));
  }
}