Fix broken sys.argv check

Closes #16

CHANGELOG.md

@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.2.1] - 2022-11-27
+
+### Fixed
+
+- Fix a critical error preventing the add-on from working in most situations (https://github.com/abdnh/anki-zim-reader/issues/16).
+
 ## [1.2.0] - 2022-11-23
 
 ### Added

src/__init__.py

@@ -1,9 +1,4 @@
 import sys
-from pathlib import Path
 
-if sys.argv[1] == "serve":
-    from .server import serve_file
-
-    serve_file(Path(sys.argv[2]))
-elif "pytest" not in sys.modules:
+if "pytest" not in sys.modules and "anki" in sys.modules:
     from . import main

src/__main__.py

@@ -0,0 +1,7 @@
+import sys
+from pathlib import Path
+
+if len(sys.argv) > 1:
+    from .server import serve_file
+
+    serve_file(Path(sys.argv[1]))