Do not run Parser on init and split main into subfunctions

Running `Parser` from init makes unit testing impossible.

Splitting `main` into subfunctions makes it more readable.

loconotion/__main__.py

@@ -18,7 +18,14 @@ except ModuleNotFoundError as error:
 
 
 def main():
-    # set up argument parser
+    args = get_args()
+    log = setup_logging(args)
+    parser = init_parser(args, log)
+    parser.run()
+
+
+def get_args():
+    # set up argument parser and return parsed args
     argparser = argparse.ArgumentParser(
         description="Generate static websites from Notion.so pages"
     )
@@ -69,8 +76,10 @@ def main():
     argparser.add_argument(
         "-v", "--verbose", action="store_true", help="Increase output log verbosity"
     )
-    args = argparser.parse_args()
+    return argparser.parse_args()
 
+
+def setup_logging(args):
     # set up some pretty logs
     log = logging.getLogger("loconotion")
     log.setLevel(logging.INFO if not args.verbose else logging.DEBUG)
@@ -113,32 +122,41 @@ def main():
     except ModuleNotFoundError as identifier:
         pass
 
-    # initialise and run the website parser
+    return log
+
+
+def init_parser(args, log):
+    # initialise the website parser
     try:
         if urllib.parse.urlparse(args.target).scheme:
             try:
-                response = requests.get(args.target)
+                requests.get(args.target)
+            except requests.ConnectionError as exception:
+                log.critical('Connection error')
+
             if "notion.so" in args.target or "notion.site" in args.target:
                 log.info("Initialising parser with simple page url")
                 config = {"page": args.target}
-                    Parser(config=config, args=vars(args))
+                parser = Parser(config=config, args=vars(args))
             else:
                 log.critical(f"{args.target} is not a notion.so page")
-            except requests.ConnectionError as exception:
+
-                log.critical(f"Connection error")
+        elif Path(args.target).is_file():
-        else:
-            if Path(args.target).is_file():
             with open(args.target, encoding="utf-8") as f:
                 parsed_config = toml.loads(f.read())
-                    log.info(f"Initialising parser with configuration file")
+                log.info('Initialising parser with configuration file')
                 log.debug(parsed_config)
-                    Parser(config=parsed_config, args=vars(args))
+                parser = Parser(config=parsed_config, args=vars(args))
+
         else:
             log.critical(f"Config file {args.target} does not exists")
+
     except FileNotFoundError as e:
         log.critical(f"FileNotFoundError: {e}")
         sys.exit(0)
 
+    return parser
+
 
 if __name__ == "__main__":
     try:

loconotion/notionparser.py

@@ -77,9 +77,10 @@ class Parser:
         # create the output folder if necessary
         self.dist_folder.mkdir(parents=True, exist_ok=True)
 
-        # initialize chromedriver and start parsing
+        # initialize chromedriver
         self.driver = self.init_chromedriver()
-        self.run(url)
+
+        self.starting_url = url
 
     def get_page_config(self, token):
         # starts by grabbing the gobal site configuration table, if exists
@@ -702,10 +703,10 @@ class Parser:
         self.driver.get(url)
         WebDriverWait(self.driver, 60).until(notion_page_loaded())
 
-    def run(self, url):
+    def run(self):
         start_time = time.time()
         self.processed_pages = {}
-        self.parse_page(url)
+        self.parse_page(self.starting_url)
         elapsed_time = time.time() - start_time
         formatted_time = "{:02d}:{:02d}:{:02d}".format(
             int(elapsed_time // 3600),