File generation without uploading a file

[vkryl]

Currently, only option to start file generation is to either send InputFileGenerated through one of InputMessageContent types, or by passing it to the UploadFile method.

However, in some cases, there's need to generate files without uploading it anywhere (but to use later by TDLib).

Example: Media type is not known before file generation. Having an option to generate file without upload would allow to generate file, see what's inside, determine correct InputMessageContent, and only then send it.

[levlam]

You can use uploadFile with file_type set to fileTypeUnknown to achieve exactly this behavior.

[levlam]

It seems that the real problem is the necessity to edit additional information about a file like duration or waveform before the message is actually sent, but after the file is generated. Now it is possible only to use uploadFile to generate the file and send it after that, but in that case there will be no message in the chat before the file is actually generated.