# 测试 node.py 中的函数
import os
import unittest
from unittest.mock import patch, MagicMock, Mock
import sys
import os

sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), "../src")))
import node


class TestGetLocalIP(unittest.TestCase):

    @patch.dict("os.environ", {"HOST_IP": "60.204.193.58"})  # 模拟设置 HOST_IP 环境变量
    def test_get_ip_from_env(self):
        # 调用被测函数
        node.get_local_ip()

        # 检查函数是否正确获取到 HOST_IP
        self.assertEqual(node.ip, "60.204.193.58")

    @patch("socket.socket")  # Mock socket 连接行为
    @patch.dict("os.environ", {})  # 模拟没有 HOST_IP 环境变量
    def test_get_ip_from_socket(self, mock_socket):
        # 模拟 socket 返回的 IP 地址
        mock_socket_instance = MagicMock()
        mock_socket.return_value = mock_socket_instance
        mock_socket_instance.getsockname.return_value = ("110.41.155.96", 0)

        # 调用被测函数
        node.get_local_ip()

        # 确认 socket 被调用过
        mock_socket_instance.connect.assert_called_with(("8.8.8.8", 80))
        mock_socket_instance.close.assert_called_once()

        # 检查是否通过 socket 获取到正确的 IP 地址
        self.assertEqual(node.ip, "110.41.155.96")


class TestSendIP(unittest.TestCase):
    @patch.dict(os.environ, {"HOST_IP": "60.204.193.58"})  # 设置环境变量 HOST_IP
    @patch("requests.get")  # Mock requests.get 调用
    def test_send_ip(self, mock_get):
        # 设置模拟返回的 HTTP 响应
        mock_response = Mock()
        mock_response.text = "node123"  # 模拟返回的节点ID
        mock_response.status_code = 200
        mock_get.return_value = (
            mock_response  # 设置 requests.get() 的返回值为 mock_response
        )

        # 保存原始的全局 id 值
        original_id = node.id

        # 调用待测函数
        node.send_ip()

        # 确保 requests.get 被正确调用
        expected_url = f"{node.server_address}/get_node?ip={node.ip}"
        mock_get.assert_called_once_with(expected_url, timeout=3)

        # 检查 id 是否被正确更新
        self.assertIs(node.id, mock_response)  # 检查 id 是否被修改
        self.assertEqual(
            node.id.text, "node123"
        )  # 检查更新后的 id 是否与 mock_response.text 匹配


class TestNode(unittest.TestCase):

    @patch("node.send_ip")
    @patch("node.get_local_ip")
    @patch("node.asyncio.create_task")
    def test_init(self, mock_create_task, mock_get_local_ip, mock_send_ip):
        # 调用 init 函数
        node.init()

        # 验证 get_local_ip 和 send_ip 被调用
        mock_get_local_ip.assert_called_once()
        mock_send_ip.assert_called_once()

        # 确保 create_task 被调用来启动心跳包
        mock_create_task.assert_called_once()


if __name__ == "__main__":
    unittest.main()