| 1 | #!/bin/bash |
| 2 | |
| 3 | BOT_TOKEN="<BOT_TOKEN>" |
| 4 | CHAT_ID="<CHAT_ID>" |
| 5 | |
| 6 | STATE_FILE="/tmp/power_state" |
| 7 | |
| 8 | POWER=$(upower -i $(upower -e | grep BAT) | grep "state:" | awk '{print $2}') |
| 9 | |
| 10 | |
| 11 | # First run |
| 12 | if [ ! -f "$STATE_FILE" ]; then |
| 13 | echo "$POWER" > "$STATE_FILE" |
| 14 | exit 0 |
| 15 | fi |
| 16 | |
| 17 | LAST=$(cat "$STATE_FILE") |
| 18 | |
| 19 | # If power state changed |
| 20 | if [ "$POWER" != "$LAST" ]; then |
| 21 | echo "$POWER" > "$STATE_FILE" |
| 22 | |
| 23 | if [ "$POWER" = "discharging" ]; then |
| 24 | MSG="⚠️ Homelab running on BATTERY! |
| 25 | Switching off heavy services recommended." |
| 26 | else |
| 27 | MSG="🔌 Power restored — running on AC" |
| 28 | fi |
| 29 | |
| 30 | curl -s -X POST "https://api.telegram.org/bot$BOT_TOKEN/sendMessage" \ |
| 31 | -d chat_id="$CHAT_ID" \ |
| 32 | -d text="$MSG" > /dev/null |
| 33 | fi |