import assert from "node:assert/strict";
import test from "node:test";

import {
  AYANAMSA_SWITCH_HINT,
  AYANAMSA_VALUES,
  DEFAULT_AYANAMSA,
  isAyanamsaName,
  resolveAyanamsa,
} from "../src/lib/ayanamsa.ts";

test("resolveAyanamsa defaults to Raman and accepts the six product values", () => {
  assert.equal(DEFAULT_AYANAMSA, "raman");
  assert.deepEqual([...AYANAMSA_VALUES], ["raman", "lahiri", "kp", "true_citra", "true_pushya", "fagan_bradley"]);
  assert.equal(resolveAyanamsa(), "raman");
  assert.equal(resolveAyanamsa(null), "raman");
  assert.equal(resolveAyanamsa({}), "raman");
  assert.equal(resolveAyanamsa({ ayanamsa: "lahiri" }), "lahiri");
  assert.equal(resolveAyanamsa({ ayanamsa: "KP" }), "kp");
  assert.equal(resolveAyanamsa({ ayanamsa: "krishnamurti" }), "kp");
  assert.equal(resolveAyanamsa({ ayanamsa: "true-pushya" }), "true_pushya");
  assert.equal(resolveAyanamsa({ ayanamsa: "fagan" }), "raman");
  assert.equal(resolveAyanamsa({ ayanamsa: "djwhal_khul" }), "raman");
  assert.equal(isAyanamsaName("raman"), true);
  assert.equal(isAyanamsaName("sidereal"), false);
  assert.match(AYANAMSA_SWITCH_HINT, /咨询、报告、星盘库和每日星语/);
  assert.match(AYANAMSA_SWITCH_HINT, /生时校正目前仍固定按 Raman/);
});

// TASK-chart-types-and-report-buttons-20260928 T6: every offered value must
// come back unchanged — `resolveAyanamsa` silently falls back to Raman for an
// unknown value, so a value missing from AYANAMSA_VALUES would quietly turn a
// user's True Citra chart into a Raman one on every path.
test("each of the six ayanamsa values resolves to itself, never to the Raman fallback", () => {
  for (const value of ["raman", "lahiri", "kp", "true_citra", "true_pushya", "fagan_bradley"]) {
    assert.equal(resolveAyanamsa({ ayanamsa: value }), value);
    assert.equal(resolveAyanamsa({ ayanamsa: value.toUpperCase().replace(/_/g, "-") }), value);
  }
  // Same alias the engine accepts (`scripts/ayanamsa_utils.py`).
  assert.equal(resolveAyanamsa({ ayanamsa: "true_chitra" }), "true_citra");
  assert.equal(resolveAyanamsa({ ayanamsa: "True-Chitra" }), "true_citra");
});

test("the settings list is exactly the six values in product order, only engine-supported ones", async () => {
  const { AYANAMSA_OPTIONS } = await import("../src/lib/ayanamsa.ts");
  assert.deepEqual(AYANAMSA_OPTIONS.map((option) => option.value), [...AYANAMSA_VALUES]);
  assert.deepEqual(AYANAMSA_OPTIONS.map((option) => option.label), [
    "Raman（默认）", "Lahiri", "KP", "True Citra", "True Pushya", "Fagan-Bradley",
  ]);
  const { readFileSync } = await import("node:fs");
  const engine = readFileSync(new URL("../../scripts/ayanamsa_utils.py", import.meta.url), "utf8");
  for (const value of AYANAMSA_VALUES) assert.match(engine, new RegExp(`'${value}': getattr\\(swe`));
  for (const option of AYANAMSA_OPTIONS) assert.ok(option.description.length > 0);
});