{ lib, ... }:
{
  toPascalCase =
    string:
    let
      head = lib.toUpper (builtins.substring 0 1 string);
      tail = builtins.substring 1 (-1) string;
    in
    head + tail;

  # Taken from nixpkgs Vaultwarden module, licensed MIT
  # https://github.com/NixOS/nixpkgs/blob/6c9a78c09ff4d6c21d0319114873508a6ec01655/nixos/modules/services/security/vaultwarden/default.nix#L20
  toUpperSnakeCase =
    name:
    let
      parts = builtins.split "([A-Z0-9]+)" name;
    in
    lib.foldl' (
      key: x:
      let
        last = lib.stringLength key - 1;
      in
      if lib.isList x then
        key + lib.optionalString (key != "" && lib.substring last 1 key != "_") "_" + lib.head x
      else if key != "" && lib.elem (lib.substring 0 1 x) lib.lowerChars then # to handle e.g. [ "disable" [ "2FAR" ] "emember" ]
        lib.substring 0 last key
        + lib.optionalString (lib.substring (last - 1) 1 key != "_") "_"
        + lib.substring last 1 key
        + lib.toUpper x
      else
        key + lib.toUpper x
    ) "" parts;
}