Q2TG/src/client/Telegram.ts

import { Api, TelegramClient } from 'telegram';
import { StringSession } from 'telegram/sessions';
import { BotAuthParams, UserAuthParams } from 'telegram/client/auth';
import { NewMessage, NewMessageEvent } from 'telegram/events';
import { EditedMessage, EditedMessageEvent } from 'telegram/events/EditedMessage';
import { DeletedMessage, DeletedMessageEvent } from 'telegram/events/DeletedMessage';
import { Entity, EntityLike } from 'telegram/define';
import { SendMessageParams } from 'telegram/client/messages';
import { CustomFile } from 'telegram/client/uploads';
import WaitForInputHelper from '../helpers/WaitForInputHelper';

export class Telegram {
  private readonly client: TelegramClient;
  private waitForInputHelper: WaitForInputHelper;

  private constructor(stringSession = '') {
    this.client = new TelegramClient(
      new StringSession(stringSession),
      parseInt(process.env.TG_API_ID),
      process.env.TG_API_HASH,
      {
        connectionRetries: 5,
        proxy: process.env.PROXY_IP ? {
          socksType: 5,
          ip: process.env.PROXY_IP,
          port: parseInt(process.env.PROXY_PORT),
        } : undefined,
      },
    );
  }

  public static async create(startArgs: UserAuthParams | BotAuthParams, stringSession = '') {
    const bot = new this(stringSession);
    await bot.client.start(startArgs);
    bot.waitForInputHelper = new WaitForInputHelper(bot);
    return bot;
  }

  public static async connect(stringSession: string) {
    const bot = new this(stringSession);
    await bot.client.connect();
    return bot;
  }

  public addNewMessageEventHandler(handler: (event: Api.Message) => any) {
    // 能用的东西基本都在 message 里面，直接调用 event 里的会 undefined
    this.client.addEventHandler(event => handler(event.message), new NewMessage({}));
  }

  public addEditedMessageEventHandler(handler: (event: EditedMessageEvent) => any) {
    this.client.addEventHandler(handler, new EditedMessage({}));
  }

  public addDeletedMessageEventHandler(handler: (event: DeletedMessageEvent) => any) {
    this.client.addEventHandler(handler, new DeletedMessage({}));
  }

  public async getChat(entity: EntityLike) {
    return new TelegramChat(this.client, await this.client.getEntity(entity), this.waitForInputHelper);
  }
}

export class TelegramChat {
  constructor(private client: TelegramClient,
              private entity: Entity,
              private waitForInputHelper: WaitForInputHelper) {
  }

  public async sendMessage(params: SendMessageParams) {
    return await this.client.sendMessage(this.entity, params);
  }

  public async sendSelfDestructingPhoto(params: SendMessageParams, photo: CustomFile, ttlSeconds: number) {
    // @ts-ignore 定义不好好写的？你家 `FileLike` 明明可以是 `TypeInputMedia`
    params.file = new Api.InputMediaUploadedPhoto({
      file: await this.client.uploadFile({
        file: photo,
        workers: 1,
      }),
      ttlSeconds,
    });
    return await this.client.sendMessage(this.entity, params);
  }

  public async waitForInput() {
    return this.waitForInputHelper.waitForInput(this.entity.id);
  }
}