[MM-54701] Fix development deep linking for login for Windows/Linux

[devinbinnie]

Summary

Windows and Linux were having issues logging into the app with the new auth changes in development mode. This is due to the way deep linking works on those OSes. The following fixes were made:

• On Windows, we specify the exact binary and arguments when registering a deep link to ensure it opens the correct app and shouldn't interfere with other Electron apps.
• On Linux, we drop a custom XDG desktop file and manually add protocol registration which should facilitate the correct protocol handling for the browser.

Ticket Link

https://mattermost.atlassian.net/browse/MM-54701

NONE

[mvitale1989]

Thanks Devin, LGTM!

I'd like to test it locally as well if possible, could you please tell me how this could be done?

[devinbinnie]

Thanks Devin, LGTM!

I'd like to test it locally as well if possible, could you please tell me how this could be done?

You can just pull down the branch, run npm i and then npm run watch and it should just work :)

[mvitale1989]

Yip, can confirm that after following the development machine setup instructions (and in particular installing the required dependencies) the commands worked nicely 🎉

And the produced desktop file lgtm:

$ cat ~/.local/share/applications/mattermost-desktop-dev.desktop 
[Desktop Entry]
Name=Mattermost.Dev
Exec=[SNIP]/desktop/node_modules/electron/dist/electron [SNIP]/desktop/dist %U
Terminal=false
Type=Application
Icon=mattermost-desktop
StartupWMClass=Mattermost
Comment=Mattermost
MimeType=x-scheme-handler/mattermost-dev;
Categories=contrib/net;