#89 - Base class for a Pyttman plugin, with methods for plugin implem…

…entations to override.

pyttman/core/plugins/base.py

@@ -0,0 +1,42 @@
+from pyttman.core.containers import MessageMixin
+
+
+class PyttmanPlugin:
+    """
+    The PluginBase class offers an API for contributors to
+    develop custom workflows which interact with different
+    parts of a Pyttman application runtime.
+
+    Implement methods as desired to interact with the
+    various layers.
+
+    The instance is long-lived throughout the application runtime.
+    """
+
+    def before_app_start(self, app):
+        """
+        Implement this method to have code execute before the app
+        starts.
+        """
+        pass
+
+    def after_app_stops(self, app):
+        """
+        Implement this method to have code execute when the
+        app has exited
+        """
+
+    def before_intent(self, message: MessageMixin):
+        """
+        Implement this method to interact with the processing
+        of a message, before it's processed by the matching Intent.
+        """
+        pass
+
+    def after_intent(self, reply: MessageMixin):
+        """
+        Implement this method to interact with the Reply object
+        from an Intent, before it's delivered to the Client for
+        a platform response.
+        """
+        pass