Commit hoarding is a terrible practice

tunebot/plugins/loader.py

@@ -0,0 +1,42 @@
+import importlib
+from typing import Any
+from typing import TYPE_CHECKING
+
+from tunebot.plugins import PluginInstance
+from tunebot.plugins.exceptions import PluginInitFailed
+
+if TYPE_CHECKING:
+    from tunebot import BasePluginInstance
+    from tunebot import ServiceBase
+    from bot import TuneBot
+
+AnyDict = dict[Any, Any]
+
+
+class FileSystemPluginLoader:
+    def __init__(self, bot: "TuneBot") -> None:
+        self.bot = bot
+
+    def load_plugin(self, plug_conf: AnyDict) -> "BasePluginInstance":
+        """
+        Loads a plugin from configuration and returns a sequence of Services
+
+        Raises:
+            PluginInitFailed: [description]
+
+        Returns:
+            tuple[list["ServiceBase"], list[str]]: [description]
+        """
+        services: list["ServiceBase"] = []
+        for service_location in plug_conf["services"]:
+            module = importlib.import_module(service_location)
+
+            if not hasattr(module, "setup"):
+                raise PluginInitFailed('Failed to find setup() for "{location}"')
+
+            services.append(module.setup(self.bot, plug_conf))
+
+        return PluginInstance(plug_conf["config"], services, plug_conf["cogs"])
+
+
+__all__ = ("FileSystemPluginLoader",)