import tables from "./vedic-chart-tables.json";

export type VargaDignity = "exalted" | "own" | "debilitated";

const EXALTATION: Readonly<Record<string, string>> = tables.exaltation;
const DEBILITATION: Readonly<Record<string, string>> = tables.debilitation;
const SIGN_LORDS: Readonly<Record<string, string>> = tables.signLords;
const NODE_OWN_SIGN: Readonly<Record<string, string>> = tables.nodeOwnSign;
const VARGA_MEANING: Readonly<Record<string, string>> = tables.vargaMeaning;

/**
 * Sign dignity of a body inside a divisional chart.
 *
 * Same precedence as `jyotish_engine._get_dignity_level` (exalted, then own
 * sign, then debilitated) without the parts that need a D1 degree or the whole
 * chart: no moolatrikona band, no neecha bhanga, no friendship. The tables are
 * the engine's; `tests/test_chart_page_vedic_tables_contract.py` pins them.
 */
export function vargaDignity(planet: string, sign: string): VargaDignity | null {
  if (EXALTATION[planet] === sign) return "exalted";
  if (SIGN_LORDS[sign] === planet || NODE_OWN_SIGN[planet] === sign) return "own";
  if (DEBILITATION[planet] === sign) return "debilitated";
  return null;
}

export const VARGA_DIGNITY_LABEL: Record<VargaDignity, string> = {
  exalted: "入旺",
  own: "自宫",
  debilitated: "落陷",
};

/** The engine's own one-line use of a D-number chart (`VargaType.meaning`). */
export function vargaMeaning(division: number): string | null {
  return VARGA_MEANING[String(division)] ?? null;
}