Why does my Telegram bot dispatch the photo repeatedly based on Upload Photo clicks?

Other Questions Telegram bot
1

Clicking the Upload Photo button multiple times triggers duplicate photo sends. The revised code below employs a one-time listener to ensure only one photo is sent per activation.

const replyOptions = { 
    reply_markup: { 
        keyboard: [[{ text: 'Info' }, { text: 'Send Image' }]] 
    } 
};

bot.onText(/\/start/, async (message) => {
    await bot.sendMessage(getChatId(message), 'Select an option:', replyOptions);
});

bot.on('message', (message) => {
    if (message.text === 'Send Image') {
        initiateImageUpload(getChatId(message));
    } else if (message.text === 'Info') {
        // Additional info logic
    }
});

async function initiateImageUpload(chatId) {
    await bot.sendMessage(chatId, 'Please provide an image');
    bot.once('photo', async (photoMsg) => {
        const imageId = photoMsg.photo[0].file_id;
        await bot.sendPhoto(channelTarget, imageId);
        await bot.sendMessage(chatId, 'Image was sent');
    });
}
2

In my experience managing Telegram bots, I encountered a similar problem where clicking multiple times led to duplicate messages because the event listener was set up in a way that did not properly unsubscribe after handling the event. I fixed this by ensuring that only a one-time listener was active for the photo trigger using bot.once and even added client-side debouncing to prevent accidental multiple triggers. It was a process of trial and error to understand the asynchronous nature of message events, and applying a debounce on the button also helped mitigate rapid duplicate requests.

3

I encountered a similar issue while developing a Telegram bot when I noticed that users could inadvertently trigger repeated actions by clicking a button. In my case, the solution involved not only using a one-time listener, as shown in the code snippet, but also maintaining a state variable to ensure the upload function could not be re-initiated until it had completed. Adding a simple check to disable the button after the first click helped prevent multiple calls. This approach made the bot more resilient to rapid user actions and improved overall user experience.

4

hey, i had a similar issue where photos duplicates kept coming bc events were retriggering. i solved it by using bot.once and a flag to block extra clicks until done. hope it helps!

5

I experienced a similar issue with my Telegram bot and found that the key was to manage the event lifecycle more carefully. In my case, I used a state variable to check whether a photo was already being processed. As soon as the upload started, I flagged the process as busy and removed any lingering event listeners to prevent multiple reactions. Once the photo was successfully handled, I reset the flag, allowing for new inputs. This dual approach of controlling the button state and cleaning up event listeners helped ensure that duplicate photos were not sent.