Telegram bot

https://www.section.io/engineering-education/telegram-bot-in-nodejs/

npm init

# install the telegraf library

npm install telegraf
const {Telegraf} = require('telegraf');
const bot = new Telegraf('<token>');
//method for invoking start command
 
bot.command('talk', ctx => {
    console.log(ctx.from)
    bot.telegram.sendMessage(ctx.chat.id, 'hello there! Welcome to my new telegram bot.', {
    })
})
bot.command('status', ctx => {
    console.log(ctx.from)
    bot.telegram.sendMessage(ctx.chat.id, 'Active.', {
    })
})
bot.launch();

souravmandalm@gmail.com

Session #2

sending images

const bot = new Telegraf('<token>');
//method for invoking start command
 
bot.command('talk', ctx => {
    console.log(ctx.from)
    bot.telegram.sendMessage(ctx.chat.id, 'hello there! Welcome to my new telegram bot.', {
    })
})
bot.command('status', ctx => {
    console.log(ctx.from)
    bot.telegram.sendMessage(ctx.chat.id, 'Active.', {
    })
})
bot.hears('dog', ctx => {
    bot.telegram.sendPhoto(ctx.chat.id, {
        source: "res/dog.jpeg"
    })

})
bot.launch();

Session #3

bot.hears('options', ctx => {
    bot.telegram.sendMessage(ctx.chat.id, `Morning or Evening`, {
        reply_markup: {
            inline_keyboard: [
                [{
                        text: "Morning",
                        callback_data: 'morning'
                    },
                    {
                        text: "Evening",
                        callback_data: 'evening'
                    }
                ],
]
        }
    })
})
bot.action('morning', ctx => {
    bot.telegram.sendMessage(ctx.chat.id, "Good Morning!")
})
bot.action('evening', ctx => {
    bot.telegram.sendMessage(ctx.chat.id, "Good Evening!")
})

next session

//method that displays the inline keyboard buttons 

bot.hears('animals', ctx => {
    console.log(ctx.from)
    let animalMessage = `great, here are pictures of animals you would love`;
    ctx.deleteMessage();
    bot.telegram.sendMessage(ctx.chat.id, animalMessage, {
        reply_markup: {
            inline_keyboard: [
                [{
                        text: "dog",
                        callback_data: 'dog'
                    },
                    {
                        text: "cat",
                        callback_data: 'cat'
                    }
                ],

            ]
        }
    })
})

//method that returns image of a dog

bot.action('dog', ctx => {
    bot.telegram.sendPhoto(ctx.chat.id, {
        source: "res/dog.jpeg"
    })

})

//method that returns image of a cat 

bot.action('cat', ctx => {
    bot.telegram.sendPhoto(ctx.chat.id, {
        source: "res/cat.jpeg"
    })

})

How to send to all users

I guess looping through all ids is the only option.

//method to start get the script to pulling updates for telegram 

bot.launch();