Note: If you're really looking for a solution and not just a play-around with JavaScript, better go for Windows-Auto-Night-Mode by Armin2208. 🙂

Auto-Dark-Mode for Win10

This program makes your Windows change the theme automatically based on the time of the day.

Pre-Install

• Install the needed dependencies:

  $ npm i
  

• Create a file config.json in ./ of the project (same level as package.json) and copy-and-paste this structure into it:

  {
      "day": {
          "from": {
              "hours": 7,
              "minutes": 0
          },
          "to": {
              "hours": 20,
              "minutes": 0
          }
      },
      "setting": {
          "system": false,
          "apps": true
      },
      "notification": true
  }
  

Installation

There are 5 different ways to use this:

1) The "normal" way:

This will run the program in the terminal you started it. If you want this to start with Windows you can create a batch file with the command in the main directory and put a link to it in your Windows startup folder.

$ npm start

2) The "normal" way in background-mode:

This is literally the normal way but it runs without a visible terminal window. Just put a link of ./start_bg.vbs in your Windows startup folder. To terminate the process you have to use Windows Task Manager and terminate the node.js process.

3) The best way with pm2:

This is probably the best way to run this program. To make it work you have to install pm2 globally. Then hit:

$ pm2 start ./src/app.js --name AutoDarkMode --watch

To start pm2 with windows:

• Either put ./start_pm.bat in Windows startup folder
• Or install pm2-windows-startup globally and call pm2-startup once by:

  $ pm2-startup install
  

  After that you need to run pm2 normally and (check $ pm2 list if your process is running and if so) hit:

  $ pm2 save
  

4) The "bad" way:

This actually does not require node.js to work. Just put ./ps1 scripts/AutoDarkMode.ps1 in your Windows startup folder. Note: This is not continously checking for the time - it fires just once when your system boots up or you hit it manually. You also have to change the time in the script itself if you want other day-/night times. In addition to that you can also run each other ps1 script in ./ps1 scripts/ on its own if you're too lazy to go to the Windows settings.

5) The manual way:

Similar to the ps1 files, if you are too lazy to change the Windows settings manually you can hit

$ npm run *[apps-|system-][light|dark]

whereas you can decide wether you want to change only apps or only system mode or both together (apps/system) is optionally.

Comparison

	run on startup	hot reload (change config.json)	background (run forever)
1)	✔ (with .bat)	✔	❌
2)	✔ (with .vbs)	✔	✔
3)	✔ (with .bat or pm2-startup)	✔ (with --watch)	✔
4)	✔ (with .ps1)	❌	❌
5)	❌	❌	❌

Change settings (./config.json)

• To change the times in which Day/Night Mode shall take effect, just change from when - until when your Day (Light) Mode shall be activated. The Night (Dark) Mode will the be the opposite of the setting.
• To change wether your system or your apps shall not be affected by a change, just toggle true/false on system/apps in setting.

Built With

• node-cron - Task scheduler for continous intervalling
• regedit - to change Dark/Light Mode in Registry
• nodemon - Hot Reloader on file change
• pm2 - Process Manager for scripts
• pm2-windows-startup - to run pm2 on startup

License

This project is licensed under the GNU v3 License.