Add support to send text files.

[nymJ]

It would be great to send text files. For example: temperature log files.

[witnessmenow]

If someone is interested in implement this I would be happy to accept in a PR.

It should re-use the sendMultiPartForm data that is already implemented so it should not be too difficult to add (hopefully!)

https://github.com/witnessmenow/Universal-Arduino-Telegram-Bot/blob/master/src/UniversalTelegramBot.cpp#L143

Telegram bot API details here: https://core.telegram.org/bots/api#senddocument

[unocerobits]

I have tried to sending files as OTA in #78, this is a dirty code, but would be great pull this function (files or OTA would be great) But I don't know how do I handle to make the OTA update, but sending and receiving is possible.

[witnessmenow]

From Malik on the Group chat:

I just followed what you refer to added this on the cpp file :

String UniversalTelegramBot::sendDocumentByBinary( String chat_id, String contentType, int fileSize, MoreDataAvailable moreDataAvailableCallback, GetNextByte getNextByteCallback) {

if (_debug) Serial.println("SEND Document");

String response = sendMultipartFormDataToTelegram( "sendDocument", "document", "file.txt", contentType, chat_id, fileSize, moreDataAvailableCallback, getNextByteCallback);

if (_debug) Serial.println(response);

return response; }

then followed sendphotoSD example another thing I did was setting the "content_type" which is in my case "document/txt",so calling the method in Arduino IDE was like this : String sent = bot.sendDocumentByBinary(chatId, "document/txt", myFile.size(), isMoreDataAvailable,getNextByte);

[Josh-Reimer]

It would be great to send text files. For example: temperature log files.

I would really appreciate a feature like this as well. Can someone explain how to achieve the same with the existing library? (without modifying the libraries code just in the Arduino code)

[Josh-Reimer]

Also, does the send photo from sd card work with the littlefs filesystem?