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

import {
  datedRectificationTitle,
  repairedRectificationTitle,
} from "../src/lib/rectification-session-title-repair.ts";

test("dated titles use the product calendar, not UTC", () => {
  const createdAt = new Date("2026-09-11T18:30:00.000Z");
  assert.equal(datedRectificationTitle(createdAt), "9月12日 · 生时校正");
});

test("repair rewrites a wall-clock today stamp back to created_at's local date", () => {
  assert.equal(
    repairedRectificationTitle({
      title: "9月15日 · 生时校正",
      createdAt: new Date("2026-09-12T03:00:00.000Z"),
    }),
    "9月12日 · 生时校正",
  );
  assert.equal(
    repairedRectificationTitle({
      title: "9月15日 · 生时校正 14:32",
      createdAt: new Date("2026-09-12T03:00:00.000Z"),
    }),
    "9月12日 · 生时校正",
  );
});

test("repair leaves matching dates and user-renamed titles alone", () => {
  assert.equal(
    repairedRectificationTitle({
      title: "9月12日 · 生时校正",
      createdAt: new Date("2026-09-12T03:00:00.000Z"),
    }),
    null,
  );
  assert.equal(
    repairedRectificationTitle({
      title: "9月12日 · 生时校正 14:32",
      createdAt: new Date("2026-09-12T03:00:00.000Z"),
    }),
    null,
  );
  assert.equal(
    repairedRectificationTitle({
      title: "家里那次校正",
      createdAt: new Date("2026-09-12T03:00:00.000Z"),
    }),
    null,
  );
});

test("missing created_at falls back to a dateless title instead of guessing", () => {
  assert.equal(
    repairedRectificationTitle({ title: "9月15日 · 生时校正", createdAt: null }),
    "生时校正",
  );
});