#!/bin/bash
# Example ntfy-bridge plugin — disk space checker
#
# A plugin receives nothing on stdin (when polled) and outputs a JSON
# Event object on stdout. Exit 0 = send, exit 1 = skip/drop.
#
# Fields: source, name, topic, priority (1-5), message, tags[], click_url, actions[]

THRESHOLD=90
USAGE=$(df -h / | tail -1 | awk '{print $5}' | sed 's/%//')

if [ "$USAGE" -lt "$THRESHOLD" ]; then
  # No alert needed — exit non-zero to skip
  exit 1
fi

# Output a JSON Event to stdout
cat <<EOF
{
  "source": "plugin",
  "name": "disk-check",
  "topic": "daily",
  "priority": 4,
  "message": "💾 **Disk usage: ${USAGE}%**\nThreshold: ${THRESHOLD}%\nHost: $(hostname)",
  "tags": ["warning"]
}
EOF