a macOS shutdown script

shutdown.sh

#!/bin/bash

shutdown_now () {
    logger "UPS Script: Sending IFTTT power_off event."
    if ! curl -s -X POST https://maker.ifttt.com/trigger/...; then
        logger "UPS Script: IFTTT notification failed."
    fi

    sleep 4

    logger "UPS Script: Initiating shutdown."
    if ! /sbin/shutdown -h +0; then
        logger "UPS Script: Shutdown command failed."
        exit 1
    fi
}

pause_nut () {
    logger "UPS Script: Stopping NUT (via Homebrew)."
    if ! brew services stop nut; then
        logger "UPS Script: Failed to stop NUT service."
    fi
}

resume_nut () {
    logger "UPS Script: Starting NUT (via Homebrew)."
    if ! brew services start nut; then
        logger "UPS Script: Failed to start NUT service."
    fi
}

# Show dialog with 20-second timeout
response=$(osascript <<'EOF'
try
    with timeout of 20 seconds
        display dialog "UPS: Power failure detected. Shut down?" buttons {"Cancel", "O.K."} default button "O.K." with icon caution
        return button returned of result
    end timeout
on error errMsg number errNum
    if errNum = -128 then
        return "Cancel"
    else
        return "Timeout"
    end if
end try
EOF
)

logger "UPS Script: Dialog returned: '$response'"

# Handle result
case "$response" in
    "O.K.")
        logger "UPS Script: User confirmed shutdown."
        shutdown_now
        ;;
    "Cancel")
        logger "UPS Script: Shutdown canceled by user."
        exit 0
        ;;
    "Timeout")
        logger "UPS Script: No user response. Proceeding with shutdown."
        shutdown_now
        ;;
    *)
        logger "UPS Script: Unexpected response. Canceling shutdown for safety."
        exit 0
        ;;
esac