Interesting request. Quite possible since Slack have this deep linking feature.

This would an interesting feature to add. I think we can use app.setAsDefaultProtocolClient()) to set zulip://. However it has different implementation ways for different OSes that needs to be looked at.
Documentation

Few things we need to add to make it work -

• Need to add open message in the desktop app button in the missed message email
• Pass the protocol (just need to add the protocol this in the package.json)
• Validate the passed parameter which is basically the server address.

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This seems to be fairly simple for a macOS implementation. Since the app.on('open-url') event getting fired sends the entire URL to the app, things get easy for a proper implementation there.
I can't find any info in the docs about Windows or Linux about the same level of functionality though, apart from maybe using the makeSingleInstance method, which is now deprecated. Not sure how to proceed here?

@akashnimare can we get some ideas from Slack's implementation of the same functionality here?

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Working.
To keep the maintainers posted, I've been looking into Mattermost's implementation of their mattermost:// scheme, but I've run into a couple of build issues when packaging the app for distribution on my Windows system. Will ask a question on the czo boards if it persists.

@kanishk98 What about just creating the URI handler/prefix and allowing (requiring) users to add it manually? Some OS might prompt the user to add it automatically, others would require manual. It would be ideal if the electron app could detect and register but it's not absolutely necessary.

@kanishk98 Also you are aware of this information? https://support.shotgunsoftware.com/hc/en-us/articles/219031308-Launching-applications-using-custom-browser-protocols

@stone212 thanks a ton for your help.

What about just creating the URI handler/prefix and allowing (requiring) users to add it manually?

I'm lost on what you're saying here. Could you give me an example?

Also you are aware of this information? https://support.shotgunsoftware.com/hc/en-us/articles/219031308-Launching-applications-using-custom-browser-protocols

I am, thanks! I checked Electron's repo and they seem to be using the stuff in the referenced link for their implementation of the setAsDefaultProtocolClient() method. I don't think this should require significant effort from our side, and we can always change to using electron-builder's functionality and defining our protocols in package.json itself if this doesn't work.

I think an Electron-only solution would be the best, of course, provided it works on all 3 platforms. :)

@kanishk98

No I can't give an example but what I am saying is that one solution could be that the server sends links to zulip content two ways. One is a link to the web page and the other starts with zulip://. Then the Electron app knows how to find the data based on the URI that follows.

And the user must manually add the zulip:// handler to the OS.

The alternative option is to make the Windows app add the handler for Windows, the MacOS app add the handler for MacOS, and the Linux app to check which display manager the user has and add the handler for that display manager (in all cases only after asking the user). That is a good final goal but it would be okay to do the first option first. Anyway you have to do those things even if you choose the second option so it is not a bad idea to start with that maybe?

@kanishk98 let me know if you need any help here.

let me know if you need any help here.

Thanks. I just resumed work on this bug, had been busy with some other issues. Looking to solve #578 along with this.

This is an incredibly annoying problem and one of the reasons why zulip is still inferior to slack/mattermost in terms of user's everyday productivity.

Also issues like this (and many others) make it very hard to advocate for migration to zulip: it's been 5 years, 3 of them with "high priority", probably never will be done, no clear status. You just can't tell your manager "let's migrate to zulip" when it's repo cries "this software is poorly managed and chaotically developed". I don't mean to disrespect, but this is how it looks from outside.

I just wanted to add that the lack of this feature is a daily annoyance for our users, we have a link from our internal system to Zulip in a structured format and instead of it opening on the electron app. I can't give them a good reason as to why it can't open in the app as it's a pretty basic feature of other platforms.

I can't give them a good reason...

That's exactly the problem. I just cannot give the team moral high ground and lack of intangible risks as a reason to fight work chat daily. Even fucking Slack had less friction in my experience everywhere I had it than Zulip introduced to an open-minded team. I hope I don't need to explain how exactly friction kills productivity and motivation...

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@akashnimare could you please review this PR?

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