A todo for creating a file converting telegram bot.

epubtopdf.md

Todos - Conversion bot - Epub to pdf

• Get the document

Check if file is epub else reject file

Document {

  _fileId: 'BQADBAADigMAAlO0OFN7fDAlnFZSHQI',

  _thumb: null,

  _fileName: 'Purpose And Power Of Authority - Myles Munroe.epub',

  _mimeType: 'application/epub+zip',

  _fileSize: 298287 }

const fileId = $.message.document.fileId;
const fileName = $.message.document.fileName;

• Get the file from telegram

const file = await bot.api.getFile(fileId);

• Make request to get the raw file from the api

https://api.telegram.org/file/bot<token>/<file_path>, where <file_path> is taken from the response. It is guaranteed that the link will be valid for at least 1 hour. When the link expires, a new one can be requested by calling getFile again `

• Save rawfile to computer using the fileName as the name of the file

• Convert file from epub to pdf using an API

• Get the file and send to the user as pdf

Materials

• Stackoverflow / Downloading files from telegram api: https://stackoverflow.com/questions/31096358/how-do-i-download-a-file-or-photo-that-was-sent-to-my-telegram-bot