#!/bin/bash
# Monitor public IP and internet speed
set -euo pipefail

SEND_NTFY="/usr/local/bin/send-ntfy.sh"
CACHE_FILE="/var/cache/public_ip_pve"

# Check public IP
CURRENT_IP=$(timeout 10 curl -s https://ifconfig.me 2>/dev/null || echo "FAILED")

if [ "$CURRENT_IP" = "FAILED" ]; then
    $SEND_NTFY warning "Internet Check Failed" "🟡 WARNING: Cannot detect public IP - internet connection issue?" "warning,globe_with_meridians"
    exit 1
fi

# Check if IP changed
if [ -f "$CACHE_FILE" ]; then
    OLD_IP=$(cat "$CACHE_FILE")
    if [ "$CURRENT_IP" != "$OLD_IP" ]; then
        $SEND_NTFY info "Public IP Changed" "ℹ️ INFO: Homelab public IP changed\nOld: $OLD_IP\nNew: $CURRENT_IP" "globe_with_meridians,info"
    fi
fi

echo "$CURRENT_IP" > "$CACHE_FILE"

# Speed test (only if --speedtest flag passed)
if [ "${1:-}" = "--speedtest" ]; then
    if command -v speedtest-cli &>/dev/null; then
        SPEED_RESULT=$(speedtest-cli --simple 2>/dev/null || echo "FAILED")
        
        if [ "$SPEED_RESULT" != "FAILED" ]; then
            UPLOAD=$(echo "$SPEED_RESULT" | grep "Upload:" | awk '{print $2}')
            UPLOAD_INT=${UPLOAD%.*}
            
            if [ "$UPLOAD_INT" -lt 10 ]; then
                $SEND_NTFY warning "Slow Internet Speed" "🟡 WARNING: Upload speed only $UPLOAD Mbit/s (< 10 Mbit/s)" "snail,warning,globe_with_meridians"
            else
                $SEND_NTFY info "Speed Test Result" "ℹ️ INFO: Internet speed test\n$SPEED_RESULT" "globe_with_meridians,zap"
            fi
        fi
    fi
fi

logger -t network-monitor "Public IP: $CURRENT_IP"