# toolkit/binding_manager.py
import threading
from typing import List, Optional
from vs_log_macros import VSC_DEBUG, VSC_INFO # type: ignore

class BindingManager:
    """模拟账户-代理绑定管理器。"""
    _instance = None
    _lock = threading.Lock()

    def __new__(cls):
        with cls._lock:
            if cls._instance is None:
                cls._instance = super().__new__(cls)
                cls._instance._bindings = {} # { (account_pool, account_id): (proxy_pool, proxy_id, bind_type) }
                cls._instance._binding_lock = threading.Lock()
            return cls._instance

    @staticmethod
    def Instance():
        return BindingManager()

    def get_bounded_proxy_id(self, account_pool: str, account_id: int) -> Optional[int]:
        """获取给定账户绑定的代理ID。"""
        with self._binding_lock:
            key = (account_pool, account_id)
            binding = self._bindings.get(key)
            if binding:
                VSC_DEBUG("binding_manager", "Found binding for account %d: proxy %d", account_id, binding[1])
                return binding[1]
            VSC_DEBUG("binding_manager", "No binding found for account %d in pool %s", account_id, account_pool)
            return None
    
    def get_bounded_proxies_ids(self, account_pool: str, proxy_pool: str) -> List[int]:
        """获取所有在特定代理池中被账户绑定的代理ID列表。"""
        with self._binding_lock:
            bounded_ids = []
            for (acc_pool, _), (p_pool, p_id, _) in self._bindings.items():
                if acc_pool == account_pool and p_pool == proxy_pool:
                    bounded_ids.append(p_id)
            VSC_DEBUG("binding_manager", "Bounded proxy IDs in pool %s for acc pool %s: %s", proxy_pool, account_pool, bounded_ids)
            return bounded_ids

    def create_binding(self, account_pool: str, account_id: int, 
                       proxy_pool: str, proxy_id: int, bind_type: str):
        """创建账户和代理的绑定。"""
        with self._binding_lock:
            key = (account_pool, account_id)
            self._bindings[key] = (proxy_pool, proxy_id, bind_type)
            VSC_INFO("binding_manager", "Created binding: account %d (pool %s) -> proxy %d (pool %s) type %s",
                     account_id, account_pool, proxy_id, proxy_pool, bind_type)

    def remove_binding(self, account_pool: str, account_id: int):
        """移除账户和代理的绑定。"""
        with self._binding_lock:
            key = (account_pool, account_id)
            if key in self._bindings:
                del self._bindings[key]
                VSC_INFO("binding_manager", "Removed binding for account %d in pool %s", account_id, account_pool)