#!/usr/bin/env bash
# Install a daily cron job to run the flight monitor at 08:00 UTC.
set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
PYTHON="$(command -v python3 || command -v python)"
CRON_CMD="0 8 * * * $PYTHON $SCRIPT_DIR/monitor.py >> $SCRIPT_DIR/monitor.log 2>&1"
MARKER="flight-monitor"

# Check if already installed
if crontab -l 2>/dev/null | grep -q "$MARKER"; then
    echo "✅ Cron job already installed (contains '$MARKER'). Nothing changed."
    exit 0
fi

# Append new entry (preserve existing crontab)
(crontab -l 2>/dev/null || true; echo "# $MARKER"; echo "$CRON_CMD") | crontab -

echo "✅ Cron job installed:"
echo "   $CRON_CMD"
echo ""
echo "Runs daily at 08:00 UTC. Logs → $SCRIPT_DIR/monitor.log"