macbook lock/unlock notifier

README.md

get telegram notifications when macbook screen locked or unlocked.

1. sudo chmod +x /opt/screenLW.sh
2. sudo chmod +x /usr/local/bin/tg_say
3. launchctl load /Library/LaunchAgents/screen_locker.plist
4. launchctl start /Library/LaunchAgents/screen_locker.plist

_Library_LaunchAgents_screen_locker.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
				<key>Label</key>
				<string>screen-locker-logger</string>
				<key>ProgramArguments</key>
				<array>
					<string>/opt/screenLW.sh</string>
				</array>
				<key>RunAtLoad</key>
				<true/>
				<key>KeepAlive</key>
				<true/>
</dict>
</plist>

_opt_screenLockWatcher.swift

#!/usr/bin/env swift

import Foundation

class ScreenLockObserver {
    init() {
        let dnc = DistributedNotificationCenter.default()

        // listen for screen lock
        let _ = dnc.addObserver(forName: NSNotification.Name("com.apple.screenIsLocked"), object: nil, queue: .main) { _ in
            NSLog("Screen Locked")
//            self.runBashScript(path: "~/bin/logout.sh")
            self.runNotifierScript(status: "MacBook locked!")
        }

        // listen for screen unlock
        let _ = dnc.addObserver(forName: NSNotification.Name("com.apple.screenIsUnlocked"), object: nil, queue: .main) { _ in
            NSLog("Screen Unlocked")
//            self.runBashScript(path: "~/bin/login.sh")
            self.runNotifierScript(status: "MacBook Unlocked!")
        }

        RunLoop.main.run()
    }

    private func runBashScript(path: String) {
        let task = Process()
        task.launchPath = "/bin/bash"
        task.arguments = ["-c", path]
        task.launch()
        task.waitUntilExit()
    }
    
    private func runNotifierScript(status: String) {
        let task = Process()
        task.launchPath = "/usr/local/bin/tg_say"
        task.arguments = [status]
        task.launch()
        task.waitUntilExit()
    }
}

let _ = ScreenLockObserver()

_opt_screenLW.sh

#!/usr/bin/env bash
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-frontend -frontend -interpret /opt/screenLockWatcher.swift -Xllvm -aarch64-use-tbi -enable-objc-interop -stack-check -sdk /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX15.0.sdk -color-diagnostics -new-driver-path /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift-driver -empty-abi-descriptor -resource-dir /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift -module-name screenLockWatcher -disable-clang-spi -target-sdk-version 15.0 -target-sdk-name macosx15.0 -external-plugin-path /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/lib/swift/host/plugins#/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server -external-plugin-path /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/local/lib/swift/host/plugins#/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/usr/bin/swift-plugin-server -plugin-path /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/host/plugins -plugin-path /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/local/lib/swift/host/plugins 

_usr_local_bin_tg_say

#!/bin/bash

API_TOKEN='<BOT_API_TOKEN>'
CHAT_ID='<CHAT_ID>'

API_URL="https://api.telegram.org/bot$API_TOKEN"

if [ -z "$CHAT_ID" ]; then
    wget -qO "${API_URL}/getUpdates"
    exit 1
fi

MSG="<b>$(hostname)</b>: $@"

if [[ -z $@ ]]; then
    while read data; do
    MSG=$MSG''$data
    curl  -sS -X POST "${API_URL}/sendMessage" -d "chat_id=${CHAT_ID}" -d parse_mode=html -d "text=${MSG}" >/dev/null 2>&1
    MSG=''
    done
    exit 0
fi;


curl  -sS -X POST "${API_URL}/sendMessage" -d "chat_id=${CHAT_ID}" -d parse_mode=html -d "text=${MSG}" >/dev/null 2>&1

if [[ $? -eq 0 ]]; then
    exit 0
else
    exit 1
fi