# import json
# import threading
#
# from flask import Flask
# from  nacos import NacosClient
#
# app = Flask(__name__)
#
# class nacos:
#     def __init__(self,address,namespace,username,password,data_id,group):
#         self.SERVER_ADDRESSES = address
#         self.NAMESPACE = namespace
#         self.USERNAME = username
#         self.PASSWORD = password
#         self.client = NacosClient(server_addresses=self.SERVER_ADDRESSES, namespace=self.NAMESPACE)
#         self.data_id = data_id
#         self.group = group
#     def load_config(self):
#         """从Nacos加载配置并更新应用状态"""
#         config_data = self.client.get_config(data_id=self.data_id, group=self.group)
#         app.config['CONFIG_DATA'] = config_data
#         print(config_data)
#         return json.loads(config_data)
#
#     def on_config_change(self,cfg):
#         """当Nacos中的配置发生变化时，更新应用配置中的配置数据"""
#         config_data = json.loads(cfg['content'])  # Parse the JSON string to a dictionary
#         app.config['CONFIG_DATA'] = config_data
#         return config_data
#
#     def watch_config_changes(self):
#         try:
#             self.client.add_config_watcher(data_id='python-mendunr', group='DEFAULT_GROUP', cb=self.on_config_change)
#             self.client.add_naming_instance(service_name='python-mendunr',
#                                        ip='192.168.3.175',
#                                        port=3333,
#                                        group_name='DEFAULT_GROUP',
#                                        ephemeral=False)
#         except Exception as e:
#             raise e
#
#
#     # def start_background_tasks(self):
#     #     """启动后台任务线程来监控配置变化"""
#     #     t = threading.Thread(target=self.watch_config_changes)
#     #     t.daemon = True
#     #     t.start()
#     #     # self.watch_config_changes()
#
# nacos_single = nacos(address="192.168.3.80:8848",namespace = "dev",username = 'nacos',
#                      password ='nacos',data_id = 'python-mendunr',group = 'DEFAULT_GROUP')
# nacos_single.watch_config_changes()
# configs = nacos_single.load_config()

import json
from flask import Flask, request
from nacos import NacosClient

app = Flask(__name__)


class NacosConfig:
    def __init__(self, address, namespace, username, password, data_id, group):
        self.SERVER_ADDRESSES = address
        self.NAMESPACE = namespace
        self.USERNAME = username
        self.PASSWORD = password
        self.client = NacosClient(server_addresses=self.SERVER_ADDRESSES, namespace=self.NAMESPACE,
                                  username=self.USERNAME, password=self.PASSWORD)
        self.data_id = data_id
        self.group = group
        self.config_data = None

    def load_config(self):
        """从Nacos加载配置"""
        config_str = self.client.get_config(data_id=self.data_id, group=self.group)
        self.config_data = json.loads(config_str) if config_str else {}
        return self.config_data

    def get_config(self):
        """返回当前加载的配置数据"""
        if self.config_data is None:
            self.load_config()
        return self.config_data


nacos_config = NacosConfig(address="192.168.3.80:8848", namespace="dev", username='nacos', password='nacos',
                           data_id='python-mendunr', group='DEFAULT_GROUP')
configs = nacos_config.get_config()


@app.route('/config')
def get_config_route():
    """返回当前配置，或者可以选择在这里重新加载配置"""
    # 可以在这里选择是否重新加载配置，或者根据需要进行其他逻辑处理
    # nacos_config.load_config()  # 如果需要每次请求都检查更新，可以取消注释这行代码
    return json.dumps(nacos_config.get_config())


if __name__ == '__main__':
    app.run(debug=True)