#!/bin/bash
# Install monitoring script for Tailscale
# This sets up a cron job to check and recover Tailscale connection

source "${AGENT_PATH}/common.sh"

echo "Setting up Tailscale monitoring..."

# Copy healthcheck script to a safe location
MONITOR_SCRIPT="/opt/tailscale-monitor.sh"
sudo cp "${CONFIG_PATH}/healthcheck.sh" "$MONITOR_SCRIPT"
sudo chmod +x "$MONITOR_SCRIPT"

# Create systemd service for monitoring (more reliable than cron)
cat << 'EOF' | sudo tee /etc/systemd/system/tailscale-monitor.service
[Unit]
Description=Tailscale Connection Monitor
After=docker.service
Requires=docker.service

[Service]
Type=simple
ExecStart=/bin/bash /opt/tailscale-monitor.sh
Restart=always
RestartSec=300
StandardOutput=journal
StandardError=journal

[Install]
WantedBy=multi-user.target
EOF

# Enable and start the monitor service
sudo systemctl daemon-reload
sudo systemctl enable tailscale-monitor.service
sudo systemctl start tailscale-monitor.service

echo "Tailscale monitoring service installed and started"

# Also add a cron job as backup
(crontab -l 2>/dev/null | grep -v tailscale-monitor; echo "*/5 * * * * /opt/tailscale-monitor.sh >> /var/log/tailscale-monitor.log 2>&1") | crontab -

echo "Backup cron job added (runs every 5 minutes)"