{ config, ... }:
{
  # Give authelia-main user access to its agenix secrets
  age.secrets."authelia-jwt-secret" = {
    file  = ./secrets/authelia-jwt-secret.age;
    owner = "authelia-main";
    group = "authelia-main";
  };
  age.secrets."authelia-storage-key" = {
    file  = ./secrets/authelia-storage-key.age;
    owner = "authelia-main";
    group = "authelia-main";
  };
  age.secrets."authelia-session-secret" = {
    file  = ./secrets/authelia-session-secret.age;
    owner = "authelia-main";
    group = "authelia-main";
  };
  age.secrets."authelia-users" = {
    file  = ./secrets/authelia-users.age;
    owner = "authelia-main";
    group = "authelia-main";
  };

  # Expose overrideable portal assets from this repository.
  environment.etc."authelia/assets".source = ./authelia-assets;

  services.authelia.instances.main = {
    enable = true;

    secrets = {
      jwtSecretFile          = config.age.secrets."authelia-jwt-secret".path;
      storageEncryptionKeyFile = config.age.secrets."authelia-storage-key".path;
      sessionSecretFile      = config.age.secrets."authelia-session-secret".path;
    };

    settings = {
      theme              = "auto";
      default_2fa_method = "totp";

      server.address = "tcp://127.0.0.1:9091";
      server.asset_path = "/etc/authelia/assets";

      log.level = "info";

      totp = {
        disable = false;
        issuer = "reudy.net";
        period = 30;
      };

      webauthn.disable = true;

      # File-based user database (simplest, no LDAP needed)
      authentication_backend.file = {
        path = config.age.secrets."authelia-users".path;
        watch = false;
      };

      # SQLite is the simplest storage - fine for a single VPS
      storage.local.path = "/var/lib/authelia-main/db.sqlite3";

      # No email server needed for a homelab — disable email notifications
      notifier.filesystem.filename = "/var/lib/authelia-main/notifications.txt";

      session = {
        expiration    = "1h";
        inactivity    = "5m";
        remember_me   = "1d";
          
        cookies = [
          {
            domain                = "reudy.net";
            authelia_url          = "https://auth.reudy.net";
            default_redirection_url = "https://hello.reudy.net";
          }
        ];
      };

      access_control = {
        # Every request requires two-factor by default
        default_policy = "two_factor";
        # You can add per-domain rules here later, e.g.:
        # rules = [
        #   { domain = "hello.reudy.net"; policy = "two_factor"; }
        # ];
      };

      regulation = {
        max_retries = 5;
      };
    };
  };
}