import logging
import yaml
import nacos

from app.core.config import settings

logger = logging.getLogger("nacos")

# client config
NACOS_SERVER_ADDRESSES = "18.167.251.121:28848"
NACOS_NAMESPACE = "zcr"
NACOS_USERNAME = "nacos"
NACOS_PASSWORD = "Aidlab123123!"

# nacos config info
NACOS_CONFIG_GROUP = "LOCAL"
NACOS_CONFIG_DATA_ID = "aida.python"

# nacos server config
NACOS_SERVICE_NAME = "AiDA-DEV"  # ←←← 必须修改！建议格式：项目名-环境，例如 ai-image-service-dev
NACOS_SERVICE_IP = "127.0.0.1"
NACOS_SERVICE_PORT = 8445

# nacos client
client = nacos.NacosClient(
    server_addresses=NACOS_SERVER_ADDRESSES,
    namespace=NACOS_NAMESPACE,
    username=NACOS_USERNAME,
    password=NACOS_PASSWORD
)


def listener_config_callback(args):
    data_id = args['data_id']
    namespace = args['namespace']
    group = args['group']
    content = args['content']
    logger.info("【Nacos】配置")
    try:
        logger.info(f"【Nacos】 动态更新 : data_id : {data_id} | namespace : {namespace} | group_name: {group}")
        new_config = yaml.safe_load(content) if content else {}
        for key, value in new_config.items():
            if hasattr(settings, key):
                old_val = getattr(settings, key)
                setattr(settings, key, value)
                if old_val != value:
                    logger.info(f"🔄 配置更新 → {key}: {old_val} → {value}")
    except Exception as e:
        logger.error(f"【Nacos】 配置解析失败: {e}")


def remove_config_callback(args):
    data_id = args['data_id']
    namespace = args['namespace']
    print(f" remove_config_callback : {data_id} | namespace : {namespace}")


def load_nacos_config():
    """初始化 Nacos 配置并监听变化"""
    logger.info(f"【Nacos】 配置订阅 - 初次获取配置信息")

    try:
        # 1. 第一次获取配置
        content = client.get_config(data_id=NACOS_CONFIG_DATA_ID, group=NACOS_CONFIG_GROUP)
        if content:
            loaded = yaml.safe_load(content) or {}
            for key, value in loaded.items():
                if hasattr(settings, key):
                    setattr(settings, key, value)
            logger.info(f"【Nacos】✅ 配置加载成功: {NACOS_CONFIG_DATA_ID} | 覆盖字段数量: {len(loaded)}")
        else:
            logger.warning("【Nacos】 返回配置为空，使用 .env + 默认值")

        client.add_config_watcher(data_id=NACOS_CONFIG_DATA_ID, group=NACOS_CONFIG_GROUP, cb=listener_config_callback)
        logger.info("【Nacos】✅ 配置监听器已注册（支持热更新）")
    except Exception as e:
        logger.error(f"【Nacos】❌ 初始化失败: {e}，将仅使用 .env 配置")
    finally:
        client.remove_config_watcher(
            data_id=NACOS_CONFIG_DATA_ID,
            group=NACOS_CONFIG_GROUP,
            cb=remove_config_callback
        )


def register_server():
    logger.info(f"nacos 服务注册")
    try:
        client.add_naming_instance(
            service_name=NACOS_SERVICE_NAME,
            ip=NACOS_SERVICE_IP,
            port=NACOS_SERVICE_PORT,
            metadata={"status": "ok"},
        )
    except Exception as e:
        logger.warning(f"【Nacos】❌ 服务注册失败 : {e}")


def deregister_server():
    logger.info(f"nacos 服务注册")
    try:
        client.remove_naming_instance(
            service_name=NACOS_SERVICE_NAME,
            ip=NACOS_SERVICE_IP,
            port=NACOS_SERVICE_PORT
        )
    except Exception as e:
        logger.warning(f"【Nacos】❌ 服务注销失败 : {e}")