import assert from "node:assert/strict";
import test from "node:test";
import { acceptThinkStepText } from "../src/lib/think-step-gate.ts";

const INCIDENT_ENGLISH = [
  "The a for 2026-09-09 (, per). The is a - an, not a.",
  'The be "" or "timing" - is a/trend.',
  'Let me use: [""]. "timing"? Let me run-jyotish-.',
].join(" ");

test("incident English salad never reaches the public think channel", () => {
  assert.equal(acceptThinkStepText(INCIDENT_ENGLISH), null);
});

test("pure Chinese thinking is unchanged", () => {
  const chinese = "先对照今日过境。再分开适合推进的事。";
  assert.equal(acceptThinkStepText(chinese), chinese);
});

test("CJK sentences are accepted whole; English words are not stripped", () => {
  // 原值：删掉 ≥4 字母英文词，留下「今日趋势  可以推进。」
  // 新值：整句接受，或整句丢弃，绝不就地删词
  // 原因：BUG-942 / 任务书 P3，正则只能当门不能当刀。
  assert.equal(
    acceptThinkStepText("今日趋势 timing 可以推进。"),
    "今日趋势 timing 可以推进。",
  );
});

test("English-only process narration is dropped even without a terminator", () => {
  assert.equal(acceptThinkStepText("The proposedKind value was rejected"), null);
});

test("an unterminated fragment is dropped rather than rewritten", () => {
  assert.equal(acceptThinkStepText("先看事业宫的结构"), null);
  assert.equal(acceptThinkStepText("先看事业宫的结构。"), "先看事业宫的结构。");
});