"""
IoT 协议适配层单元测试
覆盖MQTT、HTTP、CoAP协议设备接入和数据解析功能
"""
import unittest
from unittest.mock import Mock, patch
import json
from src.iot.mqtt_adapter import MQTTAdapter
from src.iot.http_adapter import HTTPAdapter
from src.iot.coap_adapter import CoAPAdapter


class TestMQTTAdapter(unittest.TestCase):
    """MQTT协议适配器测试"""
    
    def setUp(self):
        self.mqtt_adapter = MQTTAdapter("localhost", 1883, "test_client")
    
    def test_device_registration(self):
        """测试设备注册功能"""
        device_data = {
            "device_id": "test_device_001",
            "type": "sensor",
            "location": "building_a",
            "capabilities": ["temperature", "humidity"]
        }
        result = self.mqtt_adapter.register_device(device_data)
        self.assertTrue(result["success"])
        self.assertEqual(result["device_id"], device_data["device_id"])
    
    def test_data_parsing(self):
        """测试数据解析功能"""
        mqtt_message = {
            "topic": "devices/temperature/data",
            "payload": json.dumps({
                "device_id": "temp_sensor_01",
                "timestamp": "2026-06-16T12:00:00Z",
                "temperature": 25.5,
                "humidity": 60.2
            })
        }
        parsed_data = self.mqtt_adapter.parse_message(mqtt_message)
        self.assertEqual(parsed_data["device_id"], "temp_sensor_01")
        self.assertEqual(parsed_data["temperature"], 25.5)
    
    @patch('src.iot.mqtt_adapter.paho.mqtt.client')
    def test_connection_mqtt(self, mock_mqtt):
        """测试MQTT连接"""
        mock_client = Mock()
        mock_mqtt.Client.return_value = mock_client
        
        result = self.mqtt_adapter.connect()
        self.assertTrue(result["connected"])
        mock_client.connect.assert_called_once_with("localhost", 1883, 60)


class TestHTTPAdapter(unittest.TestCase):
    """HTTP协议适配器测试"""
    
    def setUp(self):
        self.http_adapter = HTTPAdapter("http://localhost:8080")
    
    def test_device_api_endpoint(self):
        """测试设备API端点"""
        device_data = {
            "device_id": "http_device_001",
            "model": "HTTP Sensor",
            "ip_address": "192.168.1.100"
        }
        # 模拟HTTP请求
        with patch('requests.post') as mock_post:
            mock_post.return_value.status_code = 200
            mock_post.return_value.json.return_value = {
                "success": True,
                "device_id": device_data["device_id"]
            }
            
            result = self.http_adapter.register_device(device_data)
            self.assertTrue(result["success"])
    
    def test_batch_data_upload(self):
        """测试批量数据上传"""
        batch_data = [
            {"device_id": "dev001", "temperature": 25.0, "timestamp": "2026-06-16T12:00:00Z"},
            {"device_id": "dev002", "temperature": 26.1, "timestamp": "2026-06-16T12:01:00Z"}
        ]
        
        with patch('requests.post') as mock_post:
            mock_post.return_value.status_code = 200
            mock_post.return_value.json.return_value = {"success": True, "uploaded": 2}
            
            result = self.http_adapter.upload_batch_data(batch_data)
            self.assertEqual(result["uploaded"], 2)


class TestCoAPAdapter(unittest.TestCase):
    """CoAP协议适配器测试"""
    
    def setUp(self):
        self.coap_adapter = CoAPAdapter("localhost", 5683)
    
    @patch('src.iot.coap_adapter.coap')
    def test_coap_discovery(self, mock_coap):
        """测试CoAP设备发现"""
        mock_response = Mock()
        mock_response.code = "2.05"
        mock_response.payload = json.dumps({
            "devices": ["coap_sensor_01", "coap_sensor_02"]
        }).encode()
        mock_coap.client.Client.return_value.get.return_value = mock_response
        
        devices = self.coap_adapter.discover_devices()
        self.assertEqual(len(devices), 2)
    
    def test_coap_data_collection(self):
        """测试CoAP数据收集"""
        device_resources = [
            "sensors/temperature",
            "sensors/humidity",
            "sensors/battery"
        ]
        
        with patch('src.iot.coap_adapter.coap') as mock_coap:
            mock_response = Mock()
            mock_response.code = "2.05"
            mock_response.payload = json.dumps({"value": 25.5}).encode()
            
            mock_client = Mock()
            mock_client.get.return_value = mock_response
            mock_coap.client.Client.return_value = mock_client
            
            result = self.coap_adapter.collect_data("device_01", device_resources)
            self.assertIn("temperature", result)


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