modules/secrets/default.nix


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{ config, inputs, lib, options, ... }:
with builtins;
with lib;
let
  secretsDir = "${toString ../../hosts}/${config.networking.hostName}/secrets";
  secretsFile = "${secretsDir}/secrets.nix";
in
{
  imports = [ inputs.agenix.nixosModules.age ];

  config.age = {
    secrets =
      let
        toName = lib.removeSuffix ".age";
        userExists = u: builtins.hasAttr u config.users.users;
        groupExists = g: builtins.hasAttr g config.users.groups;

        # Only set the user and/or group if they exist, to avoid warnings
        userIfExists = u: if userExists u then u else "root";
        groupIfExists = g: if groupExists g then g else "root";

        toSecret = name:
          { owner ? "root", group ? "root", mode ? "0400", ... }: {
            file = "${secretsDir}/${name}";
            owner = lib.mkDefault (userIfExists owner);
            group = lib.mkDefault (groupIfExists group);
            mode = mode;
          };
      in
      if pathExists secretsFile then
        mapAttrs' (n: v: nameValuePair (toName n) (toSecret n v))
          (import secretsFile)
      else
        { };
    identityPaths = options.age.identityPaths.default ++ (filter pathExists
      [ "${config.users.users.fcuny.home}/.ssh/id_ed25519" ]);
  };
}