# toolkit/proxy_manager.py
import threading
import time
import random
from typing import List, Optional, Dict, Any
from vs_log_macros import VSC_DEBUG, VSC_WARN, VSC_INFO # type: ignore

class ProxyManager:
    """模拟代理管理器，用于获取和锁定代理。"""
    _instance = None
    _lock = threading.Lock()

    def __new__(cls):
        with cls._lock:
            if cls._instance is None:
                cls._instance = super().__new__(cls)
                cls._instance._proxies = {
                    "global_proxy": [
                        {
                            "id": 100003,
                            "ip": "82.152.15.37",
                            "lock_until": 0,
                            "password": "idzlar",
                            "port": 7778,
                            "scheme": "http",
                            "username": "4scepfs03sh920"
                        },
                        {
                            "id": 100005,
                            "ip": "82.152.19.246",
                            "lock_until": 0,
                            "password": "idzlar",
                            "port": 7778,
                            "scheme": "http",
                            "username": "4scepfmv4gp9c"
                        },
                        {
                            "id": 100014,
                            "ip": "82.152.15.33",
                            "lock_until": 0,
                            "password": "idzlar",
                            "port": 7778,
                            "scheme": "http",
                            "username": "4scepfpclja918"
                        },
                        {
                            "id": 100018,
                            "ip": "82.152.19.4",
                            "lock_until": 0,
                            "password": "idzlar",
                            "port": 7778,
                            "scheme": "http",
                            "username": "4scepfmv4gp914"
                        },
                        {
                            "id": 100019,
                            "ip": "82.152.15.8",
                            "lock_until": 0,
                            "password": "idzlar",
                            "port": 7778,
                            "scheme": "http",
                            "username": "4scepfmv4gp913"
                        },
                        {
                            "id": 100020,
                            "ip": "82.152.19.141",
                            "lock_until": 0,
                            "password": "idzlar",
                            "port": 7778,
                            "scheme": "http",
                            "username": "4scepfmv4gp912"
                        },
                        {
                            "id": 100023,
                            "ip": "82.152.19.2",
                            "lock_until": 0,
                            "password": "idzlar",
                            "port": 7778,
                            "scheme": "http",
                            "username": "4scepfmv4gp9e"
                        },
                        {
                            "id": 100025,
                            "ip": "163.5.40.236",
                            "lock_until": 0,
                            "password": "idzlar",
                            "port": 7778,
                            "scheme": "http",
                            "username": "4scekff9u6j9a"
                        },
                        {
                            "id": 100026,
                            "ip": "45.196.65.44",
                            "lock_until": 0,
                            "password": "idzlar",
                            "port": 7778,
                            "scheme": "http",
                            "username": "4sj3agscn8592cf"
                        },
                        {
                            "id": 100027,
                            "ip": "154.82.173.108",
                            "lock_until": 0,
                            "password": "M8v0m9b1p4b3",
                            "port": 9856,
                            "scheme": "http",
                            "username": "l9w3z3c4B4O2"
                        },
                        {
                            "id": 100028,
                            "ip": "45.196.65.25",
                            "lock_until": 0,
                            "password": "idzlar",
                            "port": 7778,
                            "scheme": "http",
                            "username": "4sio3rdic7m9184"
                        },
                        {
                            "id": 100029,
                            "ip": "45.196.65.109",
                            "lock_until": 0,
                            "password": "idzlar",
                            "port": 7778,
                            "scheme": "http",
                            "username": "4sibp4qi26n93c"
                        }
                    ],
                    "ireland_proxies": [
                        {
                            "id": 100029,
                            "ip": "95.135.130.73",
                            "lock_until": 0,
                            "password": "RTBuPWx1CEr6DfD",
                            "port": 48306,
                            "scheme": "http",
                            "username": "9zMOkhCng5HG8SZ"
                        },
                        {
                            "id": 100029,
                            "ip": "95.135.130.76",
                            "lock_until": 0,
                            "password": "5i4lV3VjNwE4bkL",
                            "port": 41553,
                            "scheme": "http",
                            "username": "aNCaMFjblyODleO"
                        }
                    ]
                }
                cls._instance._proxy_lock = threading.Lock() # 用于保护代理状态
            return cls._instance

    @staticmethod
    def Instance():
        return ProxyManager()

    def get_next_proxy(self, pool_name: str) -> Optional[Dict[str, Any]]:
        """从指定池中获取下一个可用代理。"""
        with self._proxy_lock:
            proxies = self._proxies.get(pool_name, [])
            now = time.time()
            
            available_proxies = [p for p in proxies if p["lock_until"] <= now]
            if not available_proxies:
                VSC_WARN("proxy_manager", "No available proxies in pool '%s'", pool_name)
                return None
            
            proxy = random.choice(available_proxies)
            VSC_DEBUG("proxy_manager", "Selected proxy ID %d from pool '%s'", proxy["id"], pool_name)
            return proxy

    def get_unbind_proxy(self, pool_name: str, bounded_ids: List[int]) -> Optional[Dict[str, Any]]:
        """获取一个未绑定（且未锁定）的代理。"""
        with self._proxy_lock:
            proxies = self._proxies.get(pool_name, [])
            now = time.time()
            
            unbound_and_available_proxies = [
                p for p in proxies 
                if p["id"] not in bounded_ids and p["lock_until"] <= now
            ]
            if not unbound_and_available_proxies:
                VSC_WARN("proxy_manager", "No unbind and available proxies in pool '%s'", pool_name)
                return None
            
            proxy = random.choice(unbound_and_available_proxies)
            VSC_DEBUG("proxy_manager", "Selected unbind proxy ID %d from pool '%s'", proxy["id"], pool_name)
            return proxy

    def lock_proxy(self, pool_name: str, proxy_id: int, duration_seconds: int):
        """锁定指定代理一段时间。"""
        with self._proxy_lock:
            proxies = self._proxies.get(pool_name, [])
            for p in proxies:
                if p["id"] == proxy_id:
                    p["lock_until"] = time.time() + duration_seconds
                    VSC_INFO("proxy_manager", "Locked proxy ID %d in pool '%s' until %s",
                             proxy_id, pool_name, time.ctime(p["lock_until"]))
                    return
            VSC_WARN("proxy_manager", "Proxy ID %d not found in pool '%s' for locking", proxy_id, pool_name)