{pkgs, ...}: {
  services.secrets = {
    enable = true;

    extraPackages = with pkgs; [
      # for music & mail passwd files
      apacheHttpd
      # for rclone obscure config file
      rclone
    ];

    extraFunctions = ''
      replace_slash_for_sed() {
        sed "s#/#\\\/#"
      }

      simple_get_obscure() {
        rclone obscure "$(simple_get "$@")"
      }

      simple_get_replace_b2() {
        api_account=$(simple_get "$1" .keyID | replace_slash_for_sed)
        api_key=$(simple_get "$1" .applicationKey | replace_slash_for_sed)

        replace_account=''${2}_ACCOUNT
        replace_key=''${2}_KEY

        sed -i "s/$replace_account/$api_account/" "$3"
        sed -i "s/$replace_key/$api_key/" "$3"
      }

      simple_get_replace_crypt() {
        password=$(simple_get "$1" .password | replace_slash_for_sed)
        salt=$(simple_get "$1" .salt | replace_slash_for_sed)

        replace_password=''${2}_ACCOUNT
        replace_salt=''${2}_KEY

        sed -i "s/$replace_password/$password/" "$3"
        sed -i "s/$replace_salt/$salt/" "$3"
      }
    '';

    secrets = {
      vault_password = {manual = true;};

      restic_hetznervm_htpasswd = {
        user = "storage";
        group = "storage";
        fetchScript = ''
          username=$(simple_get "/api-keys/storage/restic/HetznerVM" .username)
          password=$(simple_get "/api-keys/storage/restic/HetznerVM" .password)
          htpasswd -bc "$secretFile" "$username" "$password" 2>/dev/null
        '';
      };
      restic_music_htpasswd = {
        user = "storage";
        group = "storage";
        fetchScript = ''
          username=$(simple_get "/api-keys/storage/restic/Music" .username)
          password=$(simple_get "/api-keys/storage/restic/Music" .password)
          htpasswd -bc "$secretFile" "$username" "$password" 2>/dev/null
        '';
      };
      restic_vault_htpasswd = {
        user = "storage";
        group = "storage";
        fetchScript = ''
          username=$(simple_get "/api-keys/storage/restic/Vault" .username)
          password=$(simple_get "/api-keys/storage/restic/Vault" .password)
          htpasswd -bc "$secretFile" "$username" "$password" 2>/dev/null
        '';
      };
      webdav_main_htpasswd = {
        user = "storage";
        group = "storage";
        fetchScript = ''
          username=$(simple_get "/api-keys/storage/webdav/main" .username)
          password=$(simple_get "/api-keys/storage/webdav/main" .password)
          htpasswd -bc "$secretFile" "$username" "$password" 2>&1
        '';
      };

      webdav_media_htpasswd = {
        user = "storage";
        group = "storage";
        fetchScript = ''
          username=$(simple_get "/api-keys/storage/webdav/media" .username)
          password=$(simple_get "/api-keys/storage/webdav/media" .password)
          htpasswd -bc "$secretFile" "$username" "$password" 2>&1
        '';
      };

      rclone_config = {
        user = "storage";
        group = "storage";
        fetchScript = ''
          TMP_DIR="$(mktemp -d)"

          cp ${./rclone_config.template} "$TMP_DIR/template"

          pushd "$TMP_DIR" 2>/dev/null

          STORAGEBOX_PASSWORD=$(simple_get_obscure /api-keys/hetzner/storagebox .password)
          sed -i "s/STORAGEBOX_PASSWORD/$STORAGEBOX_PASSWORD/" ./template

          simple_get_replace_b2 "/api-keys/backblaze/Chaos-Backups" "B2_CHAOS_BACKUPS" ./template
          simple_get_replace_b2 "/api-keys/backblaze/Chaos-Photos" "B2_CHAOS_PHOTOS" ./template
          simple_get_replace_b2 "/api-keys/backblaze/Chaos-Music" "B2_CHAOS_MUSIC" ./template
          simple_get_replace_b2 "/api-keys/backblaze/Phoenix-Cryptidz-Storage" "B2_PHOENIX_CRYPTIDZ_STORAGE" ./template

          PUTIO_PASSWORD="token/$(simple_get /api-keys/putio .oauth_token)"
          PUTIO_PASSWORD="$(rclone obscure "$PUTIO_PASSWORD")"
          sed -i "s/PUTIO_PASSWORD/$PUTIO_PASSWORD/" ./template

          simple_get_replace_crypt "/private-public-keys/rclone/Chaos-Media-Crypt" "STORAGE_MEDIA_CRYPT" ./template

          cp ./template $secretFile

          popd 2>/dev/null

          rm -rf "$TMP_DIR"
        '';
      };

      wg_privkey = {
        fetchScript = ''
          simple_get "/private-public-keys/wireguard/chaos-internal/storage" .private > $secretFile
        '';
      };
      wg_preshared_hetzner-vm = {
        path = "/secrets/wg_preshared_hetzner-vm";
        fetchScript = ''
          simple_get "/private-public-keys/wireguard/chaos-internal/storage" .preshared_keys.hetzner_vm > $secretFile
        '';
      };
      wg_preshared_tablet = {
        path = "/secrets/wg_preshared_tablet";
        fetchScript = ''
          simple_get "/private-public-keys/wireguard/chaos-internal/storage" .preshared_keys.tablet > $secretFile
        '';
      };
      wg_preshared_vault = {
        path = "/secrets/wg_preshared_vault";
        fetchScript = ''
          simple_get "/private-public-keys/wireguard/chaos-internal/storage" .preshared_keys.vault > $secretFile
        '';
      };
      wg_preshared_iphone8 = {
        path = "/secrets/wg_preshared_iphone8";
        fetchScript = ''
          simple_get "/private-public-keys/wireguard/chaos-internal/storage" .preshared_keys.iphone8 > $secretFile
        '';
      };
    };
  };
}