added config command line option

dyn_gandi/main.py

@@ -6,11 +6,12 @@ from datetime import datetime
 from typing import Callable, Any
 
 
-def loadSettings() -> dict:
-    path = f"{os.path.expanduser('~')}/.config/dyn-gandi/config.json"
+def loadSettings(path: str | None) -> dict:
+    if path is None:
+        path = f"{os.path.expanduser('~')}/.config/dyn-gandi/config.json"
 
-    if not os.path.exists(path):
-        path = '/etc/dyn-gandi.json'
+        if not os.path.exists(path):
+            path = '/etc/dyn-gandi.json'
 
     if not os.path.exists(path):
         quit()
@@ -99,8 +100,29 @@ def renewRecords(api: dict[str, dict[str, list[str]]], current_ip: str, log: Cal
                     log(f"[ERROR][{domain}][{record}][{response.status_code}] {response.json()}")
 
 
+def parseArgv(argv: list[str]) -> dict[str, list[str]]:
+    cli_options = {}
+    buffer = None
+
+    for arg in argv:
+        if arg.startswith('--'):
+            cli_options[arg.removeprefix('--')] = []
+            buffer = arg.removeprefix('--')
+        else:
+            cli_options[buffer].append(arg)
+    return cli_options
+
 def main():
-    settings = loadSettings()
+    argv = os.sys.argv
+    options = {}
+    if len(argv) > 1:
+        options = parseArgv(argv[1:])
+
+    config_path = None
+    if 'config' in options:
+        config_path = options['config'][0]
+
+    settings = loadSettings(config_path)
     log_path, ttl = settings['log_path'], settings['ttl']
     def logger(x: str) -> Any: return log(x, log_path)