Add more type hints

Makefile

@@ -0,0 +1,5 @@
+.PHONY: lint
+PYTHON := $(shell poetry env info -p)/bin/python
+
+lint:
+	mypy --python-executable="$(PYTHON)" lib2opds

config.ini-example

@@ -3,6 +3,7 @@ library_dir =
 opds_dir =
 library_base_uri = /library/
 opds_base_uri = /opds/
+root_filename = index.xml
 library_title = My Library
 cover_width = 500
 cover_height = 500

lib2opds/app.py

@@ -29,7 +29,7 @@ def get_utime_dir(dpath: Path) -> datetime:
     return updated
 
 
-def cli():
+def cli() -> None:
     parser = argparse.ArgumentParser(
         description="Generate OPDS catalog for local e-book library"
     )

lib2opds/config.py

@@ -18,6 +18,11 @@ class Config:
     clear_opds_dir: bool = True
     feeds_dir: Path = field(default_factory=Path)
     publication_freshness_days = 14
+    root_filename: str = "index.xml"
+    feed_by_directory_title: str = "Folders"
+    feed_new_publications_title: str = "New Books"
+    feed_all_publications_title: str = "All Books"
+    feed_by_author_title: str = "Authors"
 
     def load_from_file(self, config_path: Path) -> bool:
         if not config_path.exists():
@@ -35,6 +40,7 @@ def load_from_file(self, config_path: Path) -> bool:
         self.publication_freshness_days = config["General"].getint(
             "publication_freshness_days", 14
         )
+        self.root_filename = config["General"].get("root_filename")
 
         return True