import os
import importlib.util
import logging

logger = logging.getLogger(__name__)

def load_plugins(app=None):
    """
    Automatically discover and load general plugins from plugins/.
    
    Each plugin module can have optional hooks:
    - register(app) for API routes
    - register_commands() for bot commands
    - register_tasks() for background tasks
    - PLUGIN_NAME, PLUGIN_VERSION for metadata
    """
    plugins_dir = os.path.dirname(__file__)
    for filename in os.listdir(plugins_dir):
        if filename.endswith('.py') and filename != '__init__.py':
            module_name = filename[:-3]  # remove .py
            module_path = os.path.join(plugins_dir, filename)
            
            try:
                spec = importlib.util.spec_from_file_location(module_name, module_path)
                module = importlib.util.module_from_spec(spec)
                spec.loader.exec_module(module)
                
                # Optional metadata
                name = getattr(module, 'PLUGIN_NAME', module_name)
                version = getattr(module, 'PLUGIN_VERSION', 'unknown')
                
                # Apply hooks if available
                if app and hasattr(module, 'register'):
                    module.register(app)
                    logger.info(f"Loaded plugin routes: {name} v{version}")
                
                if hasattr(module, 'register_commands'):
                    module.register_commands()
                    logger.info(f"Loaded plugin commands: {name} v{version}")
                
                if hasattr(module, 'register_tasks'):
                    module.register_tasks()
                    logger.info(f"Loaded plugin tasks: {name} v{version}")
                
                logger.info(f"Loaded plugin: {name} v{version}")
            except Exception as e:
                logger.error(f"Failed to load plugin {module_name}: {e}")