tutti/packages/agent/gui/contexts/settings/domain/updateSettings.ts

import {
  APP_UPDATE_CHANNELS,
  APP_UPDATE_POLICIES,
  type AppUpdateChannel,
  type AppUpdatePolicy
} from "../../../shared/contracts/dto";

export function isValidUpdatePolicy(value: unknown): value is AppUpdatePolicy {
  return (
    typeof value === "string" &&
    APP_UPDATE_POLICIES.includes(value as AppUpdatePolicy)
  );
}

export function isValidUpdateChannel(
  value: unknown
): value is AppUpdateChannel {
  return (
    typeof value === "string" &&
    APP_UPDATE_CHANNELS.includes(value as AppUpdateChannel)
  );
}

export function normalizeUpdatePolicyForChannel(
  policy: AppUpdatePolicy,
  channel: AppUpdateChannel
): AppUpdatePolicy {
  // Prerelease builds are intentionally more volatile: don't auto-install them.
  if (channel === "prerelease" && policy === "auto") {
    return "prompt";
  }

  return policy;
}