rearange borgmatic setup and configuration

borgmatic/scripts/mqtt.sh

@@ -0,0 +1,26 @@
+CONFIG_FILE="$1"
+
+MQTT_BROKER="host"
+MQTT_TOPIC="borgmatic/stats/$CONFIG_FILE"
+MQTT_USER="borgmatic"
+MQTT_PASSWORD="eH2dAiG7siCIFdB7qX0MHwEFzcr9aqUi"
+
+# Run Borgmatic and extract archive stats as JSON
+PAYLOAD=$(borgmatic \
+    --stats \
+    -v 0 \
+    -c "/config/$CONFIG_FILE.yaml" \
+    --log-json \
+    --no-color \
+    --json \
+    | tee /dev/tty \
+    | sed --quiet '/^\[/p' \
+    | jq '.[0].archive'
+)
+
+# Publish to MQTT
+mosquitto_pub -h "$MQTT_BROKER" \
+               -t "$MQTT_TOPIC" \
+               -u "$MQTT_USER" \
+               -P "$MQTT_PASSWORD" \
+               -m "$PAYLOAD"