#!/usr/bin/env python3
"""
Test script to verify the get_device_hostname function in TasmotaManager.py.

This script tests:
1. Successful hostname retrieval
2. Empty hostname in response
3. Invalid JSON response
4. Non-200 status code
5. Network error (connection failure)
6. Timeout error
"""

import logging
import unittest
import requests
from unittest.mock import patch, MagicMock

# Configure logging
logging.basicConfig(
    level=logging.DEBUG,
    format='%(asctime)s - %(levelname)s - %(message)s',
    datefmt='%Y-%m-%d %H:%M:%S'
)
logger = logging.getLogger(__name__)

# Import TasmotaManager class
import sys
import os
sys.path.append(os.path.dirname(os.path.abspath(__file__)))
from TasmotaManager import TasmotaDiscovery

class TestGetDeviceHostname(unittest.TestCase):
    """Test cases for the get_device_hostname function."""
    
    def setUp(self):
        """Set up test environment."""
        self.discovery = TasmotaDiscovery(debug=True)
        
        # Create a minimal config to initialize the TasmotaDiscovery instance
        self.discovery.config = {
            'unifi': {
                'network_filter': {}
            }
        }
    
    @patch('requests.get')
    def test_successful_hostname_retrieval(self, mock_get):
        """Test successful hostname retrieval."""
        # Mock response for Status 5 command
        mock_response = MagicMock()
        mock_response.status_code = 200
        mock_response.json.return_value = {
            'StatusNET': {
                'Hostname': 'test-device'
            }
        }
        mock_get.return_value = mock_response
        
        # Call the function
        hostname, success = self.discovery.get_device_hostname("192.168.1.100")
        
        # Verify results
        self.assertEqual(hostname, 'test-device')
        self.assertTrue(success)
        
        # Verify that requests.get was called with the correct URL and timeout
        mock_get.assert_called_once_with("http://192.168.1.100/cm?cmnd=Status%205", timeout=5)
        
        logger.info("Test for successful hostname retrieval passed")
    
    @patch('requests.get')
    def test_empty_hostname_in_response(self, mock_get):
        """Test empty hostname in response."""
        # Mock response for Status 5 command
        mock_response = MagicMock()
        mock_response.status_code = 200
        mock_response.json.return_value = {
            'StatusNET': {
                'Hostname': ''
            }
        }
        mock_get.return_value = mock_response
        
        # Call the function
        hostname, success = self.discovery.get_device_hostname("192.168.1.100")
        
        # Verify results
        self.assertEqual(hostname, '')
        self.assertFalse(success)
        
        logger.info("Test for empty hostname in response passed")
    
    @patch('requests.get')
    def test_missing_hostname_in_response(self, mock_get):
        """Test missing hostname in response."""
        # Mock response for Status 5 command
        mock_response = MagicMock()
        mock_response.status_code = 200
        mock_response.json.return_value = {
            'StatusNET': {}  # No Hostname key
        }
        mock_get.return_value = mock_response
        
        # Call the function
        hostname, success = self.discovery.get_device_hostname("192.168.1.100")
        
        # Verify results
        self.assertEqual(hostname, '')
        self.assertFalse(success)
        
        logger.info("Test for missing hostname in response passed")
    
    @patch('requests.get')
    def test_invalid_json_response(self, mock_get):
        """Test invalid JSON response."""
        # Mock response for Status 5 command
        mock_response = MagicMock()
        mock_response.status_code = 200
        mock_response.json.side_effect = ValueError("Invalid JSON")
        mock_get.return_value = mock_response
        
        # Call the function
        hostname, success = self.discovery.get_device_hostname("192.168.1.100")
        
        # Verify results
        self.assertEqual(hostname, '')
        self.assertFalse(success)
        
        logger.info("Test for invalid JSON response passed")
    
    @patch('requests.get')
    def test_non_200_status_code(self, mock_get):
        """Test non-200 status code."""
        # Mock response for Status 5 command
        mock_response = MagicMock()
        mock_response.status_code = 404
        mock_get.return_value = mock_response
        
        # Call the function
        hostname, success = self.discovery.get_device_hostname("192.168.1.100")
        
        # Verify results
        self.assertEqual(hostname, '')
        self.assertFalse(success)
        
        logger.info("Test for non-200 status code passed")
    
    @patch('requests.get')
    def test_connection_error(self, mock_get):
        """Test connection error."""
        # Mock requests.get to raise a connection error
        mock_get.side_effect = requests.exceptions.ConnectionError("Connection refused")
        
        # Call the function
        hostname, success = self.discovery.get_device_hostname("192.168.1.100")
        
        # Verify results
        self.assertEqual(hostname, '')
        self.assertFalse(success)
        
        logger.info("Test for connection error passed")
    
    @patch('requests.get')
    def test_timeout_error(self, mock_get):
        """Test timeout error."""
        # Mock requests.get to raise a timeout error
        mock_get.side_effect = requests.exceptions.Timeout("Request timed out")
        
        # Call the function
        hostname, success = self.discovery.get_device_hostname("192.168.1.100")
        
        # Verify results
        self.assertEqual(hostname, '')
        self.assertFalse(success)
        
        logger.info("Test for timeout error passed")
    
    @patch('requests.get')
    def test_custom_timeout(self, mock_get):
        """Test custom timeout parameter."""
        # Mock response for Status 5 command
        mock_response = MagicMock()
        mock_response.status_code = 200
        mock_response.json.return_value = {
            'StatusNET': {
                'Hostname': 'test-device'
            }
        }
        mock_get.return_value = mock_response
        
        # Call the function with custom timeout
        hostname, success = self.discovery.get_device_hostname("192.168.1.100", timeout=10)
        
        # Verify results
        self.assertEqual(hostname, 'test-device')
        self.assertTrue(success)
        
        # Verify that requests.get was called with the custom timeout
        mock_get.assert_called_once_with("http://192.168.1.100/cm?cmnd=Status%205", timeout=10)
        
        logger.info("Test for custom timeout passed")
    
    @patch('requests.get')
    def test_with_device_name(self, mock_get):
        """Test with device_name parameter."""
        # Mock response for Status 5 command
        mock_response = MagicMock()
        mock_response.status_code = 200
        mock_response.json.return_value = {
            'StatusNET': {
                'Hostname': 'test-device'
            }
        }
        mock_get.return_value = mock_response
        
        # Call the function with device_name
        hostname, success = self.discovery.get_device_hostname("192.168.1.100", device_name="Living Room Light")
        
        # Verify results
        self.assertEqual(hostname, 'test-device')
        self.assertTrue(success)
        
        logger.info("Test with device_name parameter passed")
    
    @patch('requests.get')
    def test_with_log_level(self, mock_get):
        """Test with log_level parameter."""
        # Mock response for Status 5 command
        mock_response = MagicMock()
        mock_response.status_code = 200
        mock_response.json.return_value = {
            'StatusNET': {
                'Hostname': 'test-device'
            }
        }
        mock_get.return_value = mock_response
        
        # Call the function with log_level
        hostname, success = self.discovery.get_device_hostname("192.168.1.100", log_level="info")
        
        # Verify results
        self.assertEqual(hostname, 'test-device')
        self.assertTrue(success)
        
        logger.info("Test with log_level parameter passed")

def main():
    """Run the tests."""
    unittest.main()

if __name__ == "__main__":
    main()