import type { ContentPack, RoomTemplate, TableDefinition } from "@/types/content";
import type { TableLookupResult } from "@/rules/tables";

export function findTableByCode(content: ContentPack, code: string): TableDefinition {
  const table = content.tables.find((entry) => entry.code === code);

  if (!table) {
    throw new Error(`Unknown table code: ${code}`);
  }

  return table;
}

export function findRoomTemplateById(
  content: ContentPack,
  roomTemplateId: string,
): RoomTemplate {
  const roomTemplate = content.roomTemplates.find((entry) => entry.id === roomTemplateId);

  if (!roomTemplate) {
    throw new Error(`Unknown room template id: ${roomTemplateId}`);
  }

  return roomTemplate;
}

export function findRoomTemplateForLookup(
  content: ContentPack,
  lookup: TableLookupResult,
): RoomTemplate {
  const roomReference = lookup.entry.references?.find((reference) => reference.type === "room");

  if (!roomReference) {
    throw new Error(`Lookup result ${lookup.tableId}:${lookup.entryKey} does not point to a room.`);
  }

  return findRoomTemplateById(content, roomReference.id);
}