added config file to the nix store

README.md

@@ -27,7 +27,7 @@ The script looks for a config file at `$HOME/.config/dyn-gandi/config.log` or `/
     },
     "/path/to/a/file/containing/api_key": {
       "example.at": [ "sub1" ],
-      "example.au": [ "sub1" "sub2" ]
+      "example.au": [ "sub1", "sub2" ]
     }
   },
   "resolvers": [

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)
 

nix/module.nix

@@ -8,6 +8,9 @@ inputs: {
   cfg = config.dyn-gandi;
   package = inputs.self.packages.${pkgs.stdenv.hostPlatform.system}.default;
   inherit (lib) mkIf mkEnableOption mkOption types;
+
+  format = pkgs.formats.json {};
+  configFile = format.generate "config.json" cfg.settings;
 in {
   options.dyn-gandi = {
     enable = mkEnableOption "dyn-gandi";
@@ -42,14 +45,14 @@ in {
     environment = {
       systemPackages = [package];
 
-      etc."dyn-gandi.json" = {
-        text = builtins.toJSON cfg.settings;
-      };
+      # etc."dyn-gandi.json" = {
+      #   text = builtins.toJSON cfg.settings;
+      # };
     };
 
     systemd.services.dyn-gandi = mkIf (cfg.timer
       != null) {
-      script = "${package}/bin/dyn_gandi"; # TODO: add config file via command line options
+      script = "${package}/bin/dyn_gandi --config ${configFile}";
 
       serviceConfig = {
         Type = "oneshot";