session-desktop/ts/session/apis/snode_api/namespaces.ts

export enum SnodeNamespaces {
  /**
   * This is the namespace anyone can deposit a message for us
   */
  UserMessages = 0,

  /**
   * This is the namespace used to sync our profile
   */
  UserProfile = 2,
  /**
   * This is the namespace used to sync our contacts
   */
  UserContacts = 3,

  /**
   *  This is the namespace used to sync our user groups and communities
   */
  UserGroups = 5,

  /**
   * The messages sent to a closed group are sent and polled from this namespace
   */
  ClosedGroupMessage = -10,

  /**
   * This is the namespace used to sync the closed group details for each of the closed groups we are polling
   */
  ClosedGroupInfo = 1,
}

type PickEnum<T, K extends T> = {
  [P in keyof K]: P extends K ? P : never;
};

export type SnodeNamespacesGroup = PickEnum<
  SnodeNamespaces,
  SnodeNamespaces.ClosedGroupInfo | SnodeNamespaces.ClosedGroupMessage
>;

export type SnodeNamespacesUser = PickEnum<
  SnodeNamespaces,
  SnodeNamespaces.UserContacts | SnodeNamespaces.UserProfile | SnodeNamespaces.UserMessages
>;

/**
 * Returns true if that namespace is associated with the config of a user (not his messages, only configs)
 */
function isUserConfigNamespace(namespace: SnodeNamespaces) {
  return (
    namespace === SnodeNamespaces.UserContacts ||
    namespace === SnodeNamespaces.UserProfile ||
    namespace === SnodeNamespaces.UserGroups
  );
}

/**
 * Returns true if that namespace is associated with the config of a closed group (not its messages, only configs)
 */
function isGroupConfigNamespace(namespace: SnodeNamespaces) {
  return namespace === SnodeNamespaces.ClosedGroupInfo;
}

/**
 * Returns true if that specific namespace hashes should be tracked.
 * We do not care about hash tracking for any of the config namespaces as we poll for all of them each poll event.
 */
function isNamespaceAlwaysPolled(namespace: SnodeNamespaces) {
  return !isUserConfigNamespace(namespace) && !isGroupConfigNamespace(namespace);
}

export const SnodeNamespace = {
  isUserConfigNamespace,
  isGroupConfigNamespace,
  isNamespaceAlwaysPolled,
};