Telegram Bot sendDocument problem with filename

Question

I try to send .pdf file like this:

await bot.sendDocument(chatId, fs.readFileSync(outputFilePath), {}, {
    filename: outputFileName,
    contentType: 'application/pdf',
})

But if the filename includes at least one of these characters "§¤&`£€'", all such characters will be filtered out.

Moreover, these characters are valid for the name of the file itself.

Researching the problem, I came to the conclusion that I need to use 'percent-encoding', but how can I use this with 'sendDocument' method?

Answer 1

Try:

const caption = { caption: "caption" ?? path.basename(outputFilePath) };
const file = { filename: path.basename(outputFilePath), source: await fs.createStream(outputFilePath)};

await bot.telegram.sendDocument(chatId, file, caption);