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yonicd / slackcalls

generic package to call slack api from R
https://yonicd.github.io/slackcalls/
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download files from a slack space? #6

Open matthewdwood82 opened 3 years ago

matthewdwood82 commented 3 years ago

Hi,

Not really an issue, but was not sure how else to ask. I see in slackcalls it looks like you can upload a file to a space using files_slack() . Is there a way to download a file from slack with this or a similar method?

Thanks, -Matt

yonicd commented 3 years ago

No problem.

That is a sticky question. It depends on if the channel is private.

if not you can query the list of files in a channel and get back the url to download.

here is the relevant api docs page

matthewdwood82 commented 3 years ago

Thanks for the prompt reply. All the channels I'm interested in are public. To make sure I have this right, to get a list of those URLs I'd do something like slack_files(method = 'files.list', ...) and then I can pass URLs in the resulting list to something like Base R download.file() ?

Thanks again, -Matt

jonthegeek commented 1 year ago

@matthewdwood82 I'm sorry that we never replied to this! I suspect we went off to sort it out and got lost in some weeds. I happen to be back in those weeds today, so I'm typing out an answer to this even if it's long past something you care about!

The short answer: No, you can't just download.file. You'll need to authenticate in order to download the files.

The longish answer: Huh. It looks to me like we need to effectively implement these as special endpoints. Or at least it'd be nice to do so! It'll be something along these lines:

res <- httr::GET(
    url = URL_FROM_files.list,
    config = httr::add_headers(Authorization = paste("Bearer", Sys.getenv("SLACK_API_TOKEN")))
)

file <- httr::content(res)

I suspect what we'll really want to do is explicitly set as = "raw" in that content() call, and then writeBin() that raw object. I'll need to read when I implement this (which is now on my to-do list), though, and probably experiment a little to figure it out.