import json
import threading
import urllib.request
import ssl
import config
from core.file_manager import load_panel_settings, load_adblock_lists, load_custom_rules

def _get_ssl_context():
    ctx = ssl.create_default_context()
    ctx.check_hostname = False
    ctx.verify_mode = ssl.CERT_NONE
    return ctx

def broadcast_to_cluster(action, domain):
    def task():
        from core import dns_manager as dns 
        settings = load_panel_settings()
        nodes = settings.get('cluster_nodes', [])
        
        masters = dns.get_zone_masters_list(domain)
        if not masters:
            master_ip = settings.get('server_public_ip', '').strip()
            if master_ip: masters = [master_ip]

        ctx = _get_ssl_context()

        for node in nodes:
            try:
                url = f"{node['url'].rstrip('/')}/api/v1/cluster/zone"
                headers = {"X-API-Key": node['api_key'], "Content-Type": "application/json"}
                payload = {"domain": domain, "masters": masters}
                
                if action == 'add_slave':
                    req = urllib.request.Request(url, data=json.dumps(payload).encode('utf-8'), headers=headers, method='POST')
                elif action == 'delete_zone':
                    req = urllib.request.Request(f"{url}/{domain}", headers=headers, method='DELETE')
                
                urllib.request.urlopen(req, timeout=10, context=ctx)
                print(f"Cluster Sync OK: {node['name']} ({action} {domain})")
            except Exception as e:
                print(f"Cluster Sync FAIL: {node['name']} -> {e}")
                
    threading.Thread(target=task, daemon=True).start()

def broadcast_adblock_to_cluster(action):
    def task():
        s = load_panel_settings()
        lists = load_adblock_lists()
        rules = load_custom_rules()
        count = s.get('adblock_domains_count', 0)
        update_time = s.get('adblock_last_update', 'Never')
        
        ctx = _get_ssl_context()
        
        for node in s.get('cluster_nodes', []):
            try:
                url = f"{node['url'].rstrip('/')}/api/v1/cluster/adblock"
                headers = {"X-API-Key": node['api_key'], "Content-Type": "application/json"}
                payload = {
                    "action": action, 
                    "lists": lists, 
                    "rules": rules, 
                    "count": count, 
                    "time": update_time
                }
                req = urllib.request.Request(url, data=json.dumps(payload).encode(), headers=headers, method='POST')
                urllib.request.urlopen(req, timeout=10, context=ctx)
                print(f"Cluster AdBlock Sync OK: {node['name']} ({action})")
            except Exception as e:
                print(f"Cluster AdBlock Sync FAIL: {node['name']} -> {e}")
                
    threading.Thread(target=task, daemon=True).start()
    
def broadcast_user_to_cluster(action, username, user_data=None, old_username=None):
    def task():
        settings = load_panel_settings()
        nodes = settings.get('cluster_nodes', [])
        ctx = _get_ssl_context()
        
        for node in nodes:
            try:
                url = f"{node['url'].rstrip('/')}/api/v1/cluster/user"
                headers = {"X-API-Key": node['api_key'], "Content-Type": "application/json"}
                
                if action == 'save':
                    payload = {"username": username, "user_data": user_data, "old_username": old_username}
                    req = urllib.request.Request(url, data=json.dumps(payload).encode(), headers=headers, method='POST')
                elif action == 'delete':
                    req = urllib.request.Request(f"{url}/{username}", headers=headers, method='DELETE')
                    
                urllib.request.urlopen(req, timeout=5, context=ctx)
                print(f"Cluster Sync OK: {node['name']} (User {action} -> {username})")
            except Exception as e:
                print(f"Cluster Sync FAIL: {node['name']} -> User {username} ({e})")
                
    threading.Thread(target=task, daemon=True).start()

def broadcast_templates_to_cluster(templates_dict):
    def task():
        settings = load_panel_settings()
        nodes = settings.get('cluster_nodes', [])
        ctx = _get_ssl_context()
        
        for node in nodes:
            try:
                url = f"{node['url'].rstrip('/')}/api/v1/cluster/templates"
                headers = {"X-API-Key": node['api_key'], "Content-Type": "application/json"}
                
                req = urllib.request.Request(url, data=json.dumps(templates_dict).encode(), headers=headers, method='POST')
                urllib.request.urlopen(req, timeout=5, context=ctx)
                print(f"Cluster Sync OK: {node['name']} (Templates updated)")
            except Exception as e:
                print(f"Cluster Sync FAIL: {node['name']} -> Templates ({e})")
                
    threading.Thread(target=task, daemon=True).start()