import * as os from 'os';
import offset from '@/napcat-core/external/napi2native.json';
import { InstanceContext, NapCatCore } from '@/napcat-core/index';
import { PacketClientSession } from '@/napcat-core/packet/clientSession';
import { napCatVersion } from 'napcat-common/src/version';
import { LogWrapper } from '../helper/log';

interface OffsetType {
  [key: string]: {
    recv: string;
    send: string;
  };
}

const typedOffset: OffsetType = offset;

export class NTQQPacketApi {
  context: InstanceContext;
  core: NapCatCore;
  logger: LogWrapper;
  qqVersion: string | undefined;
  pkt!: PacketClientSession;
  errStack: string[] = [];
  packetStatus: boolean = false;

  constructor (context: InstanceContext, core: NapCatCore) {
    this.context = context;
    this.core = core;
    this.logger = core.context.logger;
  }

  async initApi () {
    this.packetStatus = (await this.InitSendPacket(this.context.basicInfoWrapper.getFullQQVersion())
      .then((result) => {
        return result;
      })
      .catch((err) => {
        this.logger.logError(err);
        this.errStack.push(err);
        return false;
      })) && this.pkt?.available;
  }

  get available (): boolean {
    return this.pkt?.available ?? false;
  }

  get clientLogStack () {
    return this.pkt?.clientLogStack + '\n' + this.errStack.join('\n');
  }

  async InitSendPacket (qqVer: string) {
    this.qqVersion = qqVer;
    const table = typedOffset[qqVer + '-' + os.arch()];
    if (!table) {
      const err = `[Core] [Packet] PacketBackend 不支持当前QQ版本架构：${qqVer}-${os.arch()}，
            请参照 https://github.com/NapNeko/NapCatQQ/releases/tag/${napCatVersion} 配置正确的QQ版本！`;
      this.logger.logError(err);
      this.errStack.push(err);
      return false;
    }
    if (this.core.configLoader.configData.packetBackend === 'disable') {
      const err = '[Core] [Packet] 已禁用PacketBackend，NapCat.Packet将不会加载！';
      this.logger.logError(err);
      this.errStack.push(err);
      return false;
    }
    this.pkt = new PacketClientSession(this.core);
    await this.pkt.init(process.pid, table.recv, table.send);
    try {
      await this.pkt.operation.FetchRkey(1500);
    } catch (error) {
      this.logger.logError('测试Packet状态异常', error);
      return false;
    }
    return true;
  }
}