#!/usr/bin/env python3
"""
Pusht Mac Mini System-Metriken zum VServer für Netdata.
Läuft als Hintergrund-Daemon.
"""

import subprocess
import time
import httpx

METRICS_URL = "http://152.53.119.77:8127"
INTERVAL = 10  # Sekunden

def get_cpu_percent():
    """CPU-Auslastung via top."""
    result = subprocess.run(
        ["top", "-l", "1", "-n", "0"],
        capture_output=True, text=True
    )
    for line in result.stdout.split("\n"):
        if "CPU usage" in line:
            # "CPU usage: 2.53% user, 10.52% sys, 84.21% idle"
            import re
            numbers = re.findall(r'([\d.]+)%', line)
            if len(numbers) >= 2:
                return float(numbers[0]) + float(numbers[1])  # user + sys
    return 0

def get_memory_percent():
    """Memory-Auslastung via vm_stat."""
    result = subprocess.run(["vm_stat"], capture_output=True, text=True)
    stats = {}
    for line in result.stdout.split("\n"):
        if ":" in line:
            key, val = line.split(":")
            val = val.strip().rstrip(".")
            try:
                stats[key.strip()] = int(val)
            except:
                pass
    
    page_size = 16384  # Apple Silicon
    pages_free = stats.get("Pages free", 0)
    pages_active = stats.get("Pages active", 0)
    pages_inactive = stats.get("Pages inactive", 0)
    pages_wired = stats.get("Pages wired down", 0)
    
    total_pages = pages_free + pages_active + pages_inactive + pages_wired
    used_pages = pages_active + pages_wired
    
    if total_pages > 0:
        return (used_pages / total_pages) * 100
    return 0

def get_load_avg():
    """Load average."""
    result = subprocess.run(["/usr/sbin/sysctl", "-n", "vm.loadavg"], capture_output=True, text=True)
    # "{ 1.23 2.34 3.45 }"
    parts = result.stdout.strip().strip("{}").split()
    if parts:
        return float(parts[0])
    return 0

def push_metrics():
    """Sammelt und pusht Metriken."""
    metrics = {
        "macmini.cpu_percent": get_cpu_percent(),
        "macmini.memory_percent": get_memory_percent(),
        "macmini.load_1min": get_load_avg(),
    }
    
    try:
        httpx.post(METRICS_URL, json=metrics, timeout=5)
        print(f"Pushed: {metrics}")
    except Exception as e:
        print(f"Push failed: {e}")

def main():
    print(f"Mac Mini metrics pusher → {METRICS_URL}")
    print(f"Interval: {INTERVAL}s")
    
    while True:
        push_metrics()
        time.sleep(INTERVAL)

if __name__ == "__main__":
    main()