"""
WebSocket event handlers for real-time updates.
"""

from flask_socketio import emit

# Placeholder process lock constants and functions
RESCAN_LOCK = "rescan"
DOWNLOAD_LOCK = "download"

# Simple in-memory process lock system
_active_locks = {}

def is_process_running(lock_name):
    """Check if a process is currently running (locked)."""
    return lock_name in _active_locks

def register_socketio_handlers(socketio):
    """Register WebSocket event handlers."""
    
    @socketio.on('connect')
    def handle_connect():
        """Handle client connection."""
        emit('status', {
            'message': 'Connected to server',
            'processes': {
                'rescan_running': is_process_running(RESCAN_LOCK),
                'download_running': is_process_running(DOWNLOAD_LOCK)
            }
        })

    @socketio.on('disconnect')
    def handle_disconnect():
        """Handle client disconnection."""
        print('Client disconnected')

    @socketio.on('get_status')
    def handle_get_status():
        """Handle status request."""
        # Import series_app from the main module if available
        try:
            from main import SeriesApp
            # This would need to be properly initialized
            series_count = 0  # Placeholder
        except:
            series_count = 0
            
        emit('status_update', {
            'processes': {
                'rescan_running': is_process_running(RESCAN_LOCK),
                'download_running': is_process_running(DOWNLOAD_LOCK)
            },
            'series_count': series_count
        })