telegraf spam bot remover

index.js

const Telegraf = require('telegraf')

const bot = new Telegraf(process.env.BOT_TOKEN)

const spam_suspect = new Map();
bot.on('message', async (ctx) => {
  let chat_id = ctx.update.message.chat.id;
  let msg = ctx.update.message.text;
  let msg_id = ctx.update.message.message_id
  console.log(ctx.update.message.from)
  console.log(await ctx.getChatAdministrators())
  if (msg.match(/t\.me\/joinchat/i)) {
    ctx.telegram.deleteMessage(chat_id, msg_id)
    console.log(`DELETED: ${chat_id} - ${msg_id}`)
    // ban message author
  }

  if (msg.match(/porno/i)) {
    ctx.telegram.deleteMessage(chat_id, msg_id)
    console.log(`DELETED: ${chat_id} - ${msg_id}`)
    // ban message author
  }

  if (ctx.update.message.reply_to_message !== undefined) {
    let comment_is_spam = ctx.update.message.text.match(/spam/i)
    if (comment_is_spam) {
      let msg_id = ctx.update.message.reply_to_message.message_id
      let vote_counter = spam_suspect.get(msg_id) || 0;
      if (vote_counter < 1) {
        vote_counter++;
        spam_suspect.set(msg_id, vote_counter)
      } else {
        spam_suspect.delete(msg_id)
        ctx.telegram.deleteMessage(chat_id, msg_id);
        console.log(`DELETED: ${chat_id} - ${msg_id}`)
        // ban message author
      }
    }
  }
})

bot.startPolling()