Support downloading media

[viiru-]

Add a function for downloading media, and use it as the default action for m.audio, m.file and m.video.

Now that authenticated media is the expected situation opening these as links in an external browser no longer works, so try this instead.

"Open in the chosen application for this mime type" would be nice as well, but based on looking at the way Gnus does this it seems harder than expected. Perhaps there is something I don't understand here..

[alphapapa]

Thanks, that looks useful. I pushed a few changes on top of your branch. If you concur, I'll merge it.

[alphapapa]

Thanks for adding the bindings. Part of me feels like it should be an uppercase letter, in case we want to use lowercase-D for a more mundane command in the future, but I don't feel too strongly about it. What do you think?

[viiru-]

Thanks for adding the bindings. Part of me feels like it should be an uppercase letter, in case we want to use lowercase-D for a more mundane command in the future, but I don't feel too strongly about it. What do you think?

Either works fine for me, all I need is the command somewhere so that I get access to the flies sent to me. I'll switch it to uppercase, for both the room command and the transient, I guess?

[alphapapa]

Thanks, @viiru-!

[phil-s]

The downloading fails for me for the video posted by amadaluzia in the Emacs room on 2025-04-16/17 (depending on your time zone).

((:id . "$ir0NiwBgEwMXIqsYvnbz0pADpE2gPTU43lgi5hQMN9s")
 (:sender . "@amadaluzia:tchncs.de")
 (:content (body . "16_Apr_2025-20:17:04.mp4")
	   (info (duration . 16751) (h . 1080)
		 (mimetype . "video/mp4") (size . 5227651)
		 (thumbnail_info (h . 337) (mimetype . "image/webp")
				 (size . 15236) (w . 600))
		 (thumbnail_url
		  . "mxc://tchncs.de/1dfc70b7f402d3af38c2f7c4b7bc5955bd1bf85b1912586167333683200")
		 (w . 1920))
	   (msgtype . "m.video")
	   (url
	    . "mxc://tchncs.de/6b7f989f5ca789c3d4169756eff8a59a2571a6401912586226855051264"))
 (:origin-server-ts . 1744831067529) (:type . "m.room.message")
 (:state-key) (:unsigned (membership . "join")) (:receipts) (:local))

I get ement-room-download-file: File already exists: "/path/to/Downloads/" when I use D, and if I click the mouse I get button-activate: Wrong number of arguments: #<subr ement-room-download-file>, 1

This is the only download URL I could recall seeing, so I haven't tested anything else.

[phil-s]

And re-testing with a fresh config, I get error: (void-variable eww-download-directory) from D, so I assume it's also missing a (require 'eww).

Loading eww manually got me back to the previous pair of errors.

[alphapapa]

Thanks for testing and reporting, @phil-s. The two commits I just pushed should solve those things, with one exception: pressing C-u before clicking a download link doesn't prompt for a filename the same way C-u D does. I don't know how to fix that right now, and I'm going to leave that for later. :)

[phil-s]

Confirming that the fixes work for me.