This is an extremely simple and niche plugin. Its goal is to notify people when your server is online or offline using a discord webhook, mainly for servers that aren't meant to be running 24/7 ( probably ones from free hosting services )
Commands
/setwebhookurl <url>
Use this to change the webhook the messages are being sent on. Note that this can accept any url, so if you'd like to link it to a custom website you can.
/setonlinemessage <message>
/setofflinemessage <message>
These commands are used for modifying what message will be sent. If you don't provide the 'message' parameter, then it won't send anything.
Installation
If you don't know how to install plugins, here is a quick explanation. Simply download the .jar file and put it in your server's 'plugins' folder. If it doesn't have one, it's most likely running on a different software.
This is my first plugin, I made it for my friend but I thought I'd share it here for whoever needs it.
If you'd like to learn how webhooks work, here is a
youtube video