# node_test剩下部分(有问题)
import os
import unittest
import pytest
from unittest.mock import patch, MagicMock, Mock, AsyncMock
import requests
import asyncio
import httpx
import respx
from fastapi.testclient import TestClient
import sys
import os

sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), "../src")))
from node import (
    app,
    send_heartbeat_internal,
    Req,
    send_ip,
    get_local_ip,
    init,
    clear,
    send_user_des_message,
    ip,
    id,
)


client = TestClient(app)
server_address = "http://60.204.236.38:8000/server"
# ip = None  # 初始化全局变量 ip
# id = None  # 初始化全局变量 id


class TestGetLocalIP(unittest.TestCase):

    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):
        global ip
        # 调用被测函数
        get_local_ip()
        # 检查函数是否正确获取到 HOST_IP
        self.assertEqual(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):
        global ip
        # 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
        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(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
    @respx.mock
    def test_send_ip(self):
        global ip, id
        ip = "60.204.193.58"
        mock_url = f"{server_address}/get_node?ip={ip}"
        respx.get(mock_url).mock(return_value=httpx.Response(200, text="node123"))

        # 调用待测函数
        send_ip()

        # 确保 requests.get 被正确调用
        self.assertEqual(
            id, "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
        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()

    def test_clear(self):
        # 调用 clear 函数
        clear()
        # 检查输出
        self.assertTrue(True)  # 这里只是为了确保函数被调用，没有实际逻辑需要测试


@pytest.mark.asyncio
@respx.mock
async def test_send_heartbeat_internal_success():
    global ip
    ip = "60.204.193.58"
    # 模拟心跳请求
    heartbeat_route = respx.get(f"{server_address}/heartbeat?ip={ip}").mock(
        return_value=httpx.Response(200)
    )

    # 模拟 requests.get 以避免实际请求
    with patch("requests.get", return_value=httpx.Response(200)) as mock_get:
        # 模拟 asyncio.sleep 以避免实际延迟
        with patch("asyncio.sleep", new_callable=AsyncMock) as mock_sleep:
            task = asyncio.create_task(send_heartbeat_internal())
            await asyncio.sleep(0.1)  # 允许任务运行一段时间
            task.cancel()  # 取消任务以停止无限循环
            try:
                await task  # 确保任务被等待
            except asyncio.CancelledError:
                pass  # 捕获取消错误

    assert mock_get.called
    assert mock_get.call_count > 0


@pytest.mark.asyncio
@respx.mock
async def test_send_heartbeat_internal_failure():
    global ip
    ip = "60.204.193.58"
    # 模拟心跳请求以引发异常
    heartbeat_route = respx.get(f"{server_address}/heartbeat?ip={ip}").mock(
        side_effect=httpx.RequestError("Central server error")
    )

    # 模拟 requests.get 以避免实际请求
    with patch(
        "requests.get", side_effect=httpx.RequestError("Central server error")
    ) as mock_get:
        # 模拟 asyncio.sleep 以避免实际延迟
        with patch("asyncio.sleep", new_callable=AsyncMock) as mock_sleep:
            task = asyncio.create_task(send_heartbeat_internal())
            await asyncio.sleep(0.1)  # 允许任务运行一段时间
            task.cancel()  # 取消任务以停止无限循环
            try:
                await task  # 确保任务被等待
            except asyncio.CancelledError:
                pass  # 捕获取消错误

    assert mock_get.called
    assert mock_get.call_count > 0


def test_user_src():
    # 模拟 ReEncrypt 函数
    with patch(
        "node.ReEncrypt", return_value=(("a", "b", "c", "d"), b"encrypted_data")
    ):
        # 模拟 send_user_des_message 函数
        with patch(
            "node.send_user_des_message", new_callable=AsyncMock
        ) as mock_send_user_des_message:
            message = {
                "source_ip": "60.204.193.58",
                "dest_ip": "60.204.193.59",
                "capsule": (("x1", "y1"), ("x2", "y2"), 123),
                "ct": 456,
                "rk": ["rk1", "rk2"],
            }
            response = client.post("/user_src", json=message)
            assert response.status_code == 200
            assert response.json() == {"detail": "message received"}
            mock_send_user_des_message.assert_called_once()


def test_send_user_des_message():
    with respx.mock:
        dest_ip = "60.204.193.59"
        re_message = (("a", "b", "c", "d"), 123)
        respx.post(f"http://{dest_ip}:8002/receive_messages").mock(
            return_value=httpx.Response(200, json={"status": "success"})
        )
        response = requests.post(
            f"http://{dest_ip}:8002/receive_messages",
            json={"Tuple": re_message, "ip": "60.204.193.58"},
        )
        assert response.status_code == 200
        assert response.json() == {"status": "success"}


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