#!/usr/bin/env python3
import sys
import argparse
import urllib.request
import urllib.error

def fetch_config(ip, data_id, group, tenant):
    url = f"http://{ip}:8848/nacos/v1/cs/configs?dataId={data_id}&group={group}&tenant={tenant}"
    print(f"Trying to fetch config from {url}...")
    try:
        with urllib.request.urlopen(url, timeout=5) as response:
            if response.status == 200:
                return response.read().decode('utf-8')
    except urllib.error.URLError as e:
        print(f"Failed to connect to {ip}: {e}")
    except Exception as e:
        print(f"Error fetching config from {ip}: {e}")
    return None

def main():
    parser = argparse.ArgumentParser(description="Fetch configuration from Nacos via HTTP.")
    parser.add_argument("--hosts", nargs='+', default=["192.168.3.200", "192.168.3.230"], help="List of Nacos server IPs")
    parser.add_argument("--data-id", required=True, help="Nacos Data ID (e.g., redis.yml)")
    parser.add_argument("--group", default="DEFAULT_GROUP", help="Nacos Group (default: DEFAULT_GROUP)")
    parser.add_argument("--tenant", default="dev", help="Nacos Tenant (default: dev)")
    
    args = parser.parse_args()
    
    config_content = None
    for ip in args.hosts:
        config_content = fetch_config(ip, args.data_id, args.group, args.tenant)
        if config_content:
            print(f"Successfully fetched config from {ip}")
            break
            
    if config_content:
        print("-" * 40)
        print(f"CONTENT OF {args.data_id}:")
        print("-" * 40)
        print(config_content)
        print("-" * 40)
    else:
        print(f"Failed to fetch config '{args.data_id}' from all provided hosts.")
        sys.exit(1)

if __name__ == "__main__":
    main()