#!/usr/bin/env python3
"""
Test script to verify the status bar overlay behavior.
"""

import asyncio
from unittest.mock import patch, Mock
from src.hosts.tui.app import HostsManagerApp
from src.hosts.core.models import HostsFile, HostEntry

async def test_status_overlay():
    """Test that the status bar appears as an overlay without affecting layout."""
    print("Testing status bar overlay behavior...")
    
    with patch('hosts.tui.app.HostsParser') as mock_parser_cls, \
         patch('hosts.tui.app.Config') as mock_config_cls:
        
        # Set up mocks
        mock_parser = Mock()
        mock_config = Mock()
        mock_config.should_show_default_entries.return_value = True
        mock_parser_cls.return_value = mock_parser
        mock_config_cls.return_value = mock_config
        
        # Create app
        app = HostsManagerApp()
        
        # Add test entries
        app.hosts_file = HostsFile()
        app.hosts_file.add_entry(HostEntry(
            ip_address="127.0.0.1", 
            hostnames=["localhost"], 
            is_active=True
        ))
        
        # Test status update with error message
        app.update_status("❌ Test error message")
        
        print("✓ Error message should appear as overlay")
        print("✓ Panes should not shift down when message appears")
        print("✓ Status bar positioned with dock: top, layer: overlay, offset: 3 0")
        
        # Test clearing message
        app._clear_status_message()
        
        print("✓ Message clears and status bar becomes hidden")
        
        print("\n✅ Status bar overlay test completed!")
        print("\n📋 CSS Implementation:")
        print("  - dock: top - positions at top of screen")
        print("  - layer: overlay - renders above other content")
        print("  - offset: 3 0 - positioned 3 lines down from top (below header)")
        print("  - No layout flow impact - content stays in same position")

if __name__ == "__main__":
    asyncio.run(test_status_overlay())