import type { Group, Space } from "@rakazo/contracts";

export function isHauptthreadGroup(group: Pick<Group, "id" | "name">): boolean {
  return group.name === "Hauptthread" || group.name === "Team Chat";
}

/** Project-scoped group chats in a space (excludes Hauptthread). */
export function projectGroupChatsInSpace(
  groups: readonly Pick<Group, "id" | "name" | "spaceId">[],
  spaceId: string,
): readonly Pick<Group, "id">[] {
  return groups.filter((group) => group.spaceId === spaceId && !isHauptthreadGroup(group));
}

/** Non-default project space with no project group conversations yet. */
export function isEmptyProjectSpace(
  spaceId: string | null | undefined,
  spaces: readonly Pick<Space, "id" | "isDefault">[],
  groups: readonly Pick<Group, "id" | "name" | "spaceId">[],
  homeSpaceId: string | undefined,
): boolean {
  if (!spaceId || !homeSpaceId || spaceId === homeSpaceId) return false;
  const space = spaces.find((item) => item.id === spaceId);
  if (!space || space.isDefault) return false;
  return projectGroupChatsInSpace(groups, spaceId).length === 0;
}