rsshub/lib/routes/telegram/scripts/get-telegram-session.mjs

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import { TelegramClient } from 'telegram';
import { StringSession } from 'telegram/sessions/index.js';
import readline from 'node:readline';
import winston from 'winston';

function userInput(question) {
    const rl = readline.createInterface({
        input: process.stdin,
        output: process.stdout,
    });
    return new Promise((resolve) => {
        rl.question(question, (answer) => {
            rl.close();
            resolve(answer);
        });
    });
}

const logger = winston.createLogger({
    level: 'info',
    format: winston.format.combine(
        winston.format.timestamp(),
        winston.format.printf(({ level, message, timestamp }) => `${timestamp} ${level}: ${message}`)
    ),
    transports: [new winston.transports.Console()],
});

async function getSessionString() {
    const apiId = Number.parseInt(await userInput('Please enter your API ID: '));
    const apiHash = await userInput('Please enter your API Hash: ');
    const stringSession = new StringSession('');
    const client = new TelegramClient(stringSession, apiId, apiHash, {
        connectionRetries: 5,
    });
    await client.start({
        phoneNumber: async () => await userInput('Please enter your phone number: '),
        password: async () => await userInput('Please enter your password: '),
        phoneCode: async () => await userInput('Please enter the code you received: '),
        onError: (err) => logger.error(err),
    });

    logger.info('You are now connected.');
    const sessionString = client.session.save();
    logger.info(`Your session string is: ${sessionString}`);

    await client.disconnect();
    return sessionString;
}

// Run the function
getSessionString().catch((error) => logger.error(error));