It is possible to track what apps are in use and what file is openned with nodejs

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For a future project, I need to track user activity to record their productivity time. I want to detect which file is currently open in apps like Adobe Photoshop for exemple and detect when the user switch to other app or other file/tab.

To make my desktop app, I wish to use electron JS

Can you just give me some tracks to follow ? I don't find any nodejs library that allow me to do that, but i know that is possible because it already done with eletron apps like :

And an other App wich not seems to be built with electron : https://desktime.com/features

Thanks for your help

electron node.js time-tracking macos windows
1 Answers

node.js doesn't have the capabilities you require, however it can call external programs to get the job done. The way I see it, you would need to have a PowerShell script (or C# program) to get the active window from the operating system, and find all open file handles for the process behind that window. You would invoke this script from node, and build your gui around it.

A good starting point is this module active-window which works exacty as I described: a nodejs process calls some external scripts (in bash/PowerShell) that use OS specific primitives to get the active window.

To get the list of files opened by a process, you could use the handle utility from Sysinternals. However you may run into a small problem: apps like Photoshop usually don't keep the file handle open, they just open it when saving the file. This means that you won't always be able to detect open files. I guess trial and error is your friend here.

To find open tabs, it's more complicated. Tabs usually indicate the internal state of an app, and this information is held in memory. Some apps might offer an API, but that's not guaranteed. I guess screenshots are the way to go here.

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