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from abc import ABC, abstractmethod
import importlib
import os
from typing import Dict, List, Type
# Base interface for all plugins
defined
class Plugin(ABC):
"""
Base class for Shasha AI plugins.
"""
name: str
description: str
@abstractmethod
def initialize(self, config: Dict) -> None:
"""Perform any setup required by the plugin."""
pass
@abstractmethod
def execute(self, **kwargs) -> Dict:
"""Run the plugin action and return a dict of results."""
pass
class PluginManager:
"""
Manages discovery, registration, and invocation of plugins.
"""
def __init__(self, plugins_dir: str = 'plugins'):
self.plugins_dir = plugins_dir
self._registry: Dict[str, Type[Plugin]] = {}
self._instances: Dict[str, Plugin] = {}
def discover(self) -> None:
"""
Auto-import all modules in the plugins directory.
"""
if not os.path.isdir(self.plugins_dir):
return
for filename in os.listdir(self.plugins_dir):
if not filename.endswith('.py') or filename.startswith('_'):
continue
module_name = filename[:-3]
module_path = f"{self.plugins_dir}.{module_name}"
try:
module = importlib.import_module(module_path)
for attr in dir(module):
obj = getattr(module, attr)
if isinstance(obj, type) and issubclass(obj, Plugin) and obj is not Plugin:
self.register(obj)
except Exception as e:
print(f"Failed to load plugin module {module_path}: {e}")
def register(self, plugin_cls: Type[Plugin]) -> None:
"""
Register a plugin class by its .name attribute.
"""
key = plugin_cls.name
self._registry[key] = plugin_cls
def initialize_all(self, config: Dict = None) -> None:
"""
Instantiate and initialize all registered plugins.
"""
for name, cls in self._registry.items():
try:
instance = cls()
instance.initialize(config or {})
self._instances[name] = instance
except Exception as e:
print(f"Failed to initialize plugin {name}: {e}")
def list_plugins(self) -> List[str]:
"""
Return the list of registered plugin names.
"""
return list(self._registry.keys())
def execute(self, name: str, **kwargs) -> Dict:
"""
Execute a named plugin.
"""
plugin = self._instances.get(name)
if not plugin:
raise ValueError(f"Plugin '{name}' is not initialized.")
return plugin.execute(**kwargs)
# Example plugin for VSCode snippets
class VSCodeSnippetPlugin(Plugin):
name = "vscode_snippets"
description = "Provides VSCode snippet generation and insertion into editor."
def initialize(self, config: Dict) -> None:
# e.g., set snippet directory from config
self.snippet_dir = config.get('snippet_dir', './snippets')
def execute(self, **kwargs) -> Dict:
# Generate or fetch a snippet
language = kwargs.get('language', 'python')
snippet_name = kwargs.get('snippet_name')
# Load snippet from disk or generate dynamically
path = os.path.join(self.snippet_dir, f"{language}.{snippet_name}.json")
if os.path.exists(path):
with open(path, 'r') as f:
content = f.read()
else:
content = '{ "prefix": "todo", "body": ["// add your snippet here"] }'
return { 'plugin': self.name, 'snippet': content }
# Initialize default manager for import
plugin_manager = PluginManager()
plugin_manager.discover()
plugin_manager.initialize_all()
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