dynamically fetch the path to the templates

ops_bot/__init__.py

@@ -1 +1,7 @@
+from pathlib import Path
+
 __version__ = "0.1.0"
+
+
+def get_project_root() -> Path:
+    return Path(__file__).parent

ops_bot/util/template.py

@@ -20,6 +20,7 @@ from jinja2 import BaseLoader
 from jinja2 import Environment as JinjaEnvironment
 from jinja2 import Template, TemplateNotFound
 
+from ops_bot import get_project_root
 from ops_bot.util import markdown
 
 
@@ -111,13 +112,14 @@ class PluginTemplateLoader(BaseLoader):
     macros: str
 
     def __init__(self, base: str, directory: str) -> None:
-        self.directory = os.path.join("templates", base, directory)
-        self.macros = sync_read_file(os.path.join("templates", base, "macros.html"))
+        base_path = get_project_root() / ".." / "templates" / base
+        self.directory = base_path / directory
+        self.macros = sync_read_file(base_path / "macros.html")
 
     def get_source(
         self, environment: Any, name: str
     ) -> Tuple[str, str, Callable[[], bool]]:
-        path = f"{os.path.join(self.directory, name)}.html"
+        path = self.directory / f"{name}.html"
         try:
             tpl = sync_read_file(path)
         except KeyError:
@@ -137,7 +139,6 @@ class TemplateManager:
     _loader: PluginTemplateLoader
 
     def __init__(self, base: str, directory: str) -> None:
-        # self._loader = FileSystemLoader(os.path.join("templates/", base))
         self._loader = PluginTemplateLoader(base, directory)
         self._env = JinjaEnvironment(  # nosec B701
             loader=self._loader,