/**
 * D10 (2026-09-16): the credible range is promoted to a bar that is on screen at
 * every width, and the board's five folds collapse to two.
 *
 * What these tests are really guarding is the honesty rule, not the layout.
 * Every figure on that bar has to be one the server already computed — see
 * frontend/docs/VOICE.md rule 2. The narrowing-progress readout the brief asked
 * for is deliberately absent because no projection carries it; the assertions
 * below keep it absent rather than letting someone add the arithmetic later.
 */

import assert from "node:assert/strict";
import test from "node:test";
import { readFileSync } from "node:fs";
import { createElement } from "react";
import { renderToStaticMarkup } from "react-dom/server";

import {
  answeredProbeLabel,
  datedEventLabel,
  buildRectificationTimeline,
  workingMinuteLabel,
} from "../src/lib/rectification-timeline-scale.ts";
import { parseRectificationCandidateResult } from "../src/lib/rectification-candidate-result.ts";
import { workingRectificationTime } from "../src/lib/rectification-board-model.ts";
import { RectificationTimeline } from "../src/components/rectification-timeline.tsx";

const read = (path: string) => readFileSync(new URL(path, import.meta.url), "utf8");
const scale = read("../src/lib/rectification-timeline-scale.ts");
const bar = read("../src/components/rectification-timeline.tsx");
const board = read("../src/components/rectification-board.tsx");
const chat = read("../src/components/rectification-agentic-chat.tsx");
const styles = read("../src/app/globals.css");

const RESULT_ID = "77777777-7777-4777-8777-777777777770";
const CANDIDATE_ID = "77777777-7777-4777-8777-777777777771";

function candidateSnapshot(extra: Record<string, unknown> = {}) {
  return parseRectificationCandidateResult({
    resultId: RESULT_ID,
    candidates: [
      { candidateId: CANDIDATE_ID, rank: 1, time: "05:08", relativeSupport: 16, tiedMinuteCount: 1 },
    ],
    overallConfidence: "low",
    selectionAllowed: true,
    confirmationAllowed: false,
    representativeTime: "05:08",
    selectedTime: null,
    credibleRange: ["05:07", "05:09"],
    ...extra,
  });
}

test("the bar's working minute is the board clock's own value, not a second derivation", () => {
  // The board title row renders `workingRectificationTime(result)`. The chat
  // passes the result of that same call into the bar, so the two surfaces
  // cannot drift apart — there is one expression, not two that agree today.
  assert.match(board, /const workingTime = workingRectificationTime\(result\);/);
  assert.match(board, /className="rectification-board__clock">\{workingTime\}/);
  assert.match(chat, /workingTime: workingRectificationTime\(candidateResult\)/);

  const result = candidateSnapshot();
  assert.ok(result);
  const view = buildRectificationTimeline({
    searchWindow: ["04:45", "05:15"],
    credibleRange: result.credibleRange,
    candidateTimes: ["05:08"],
    stage: "minute",
    workingTime: workingRectificationTime(result),
    workingAdopted: Boolean(result.selectedTime),
  });
  assert.equal(view?.workingLabel, "代表分钟 05:08");
  assert.equal(view?.rangeLabel, "05:07–05:09");
});

test("an adopted minute is labelled adopted, and adoption is still not confirmation", () => {
  const adopted = candidateSnapshot({ selectedTime: "05:08" });
  assert.ok(adopted);
  assert.equal(workingRectificationTime(adopted), "05:08");
  assert.equal(workingMinuteLabel("05:08", true), "已采用 05:08");
  assert.equal(workingMinuteLabel("05:08", false), "代表分钟 05:08");
  // The bar states which minute is in use. It must never assert the birth
  // minute is settled — that boundary lives in the delivery/adopt narration,
  // and AGENTS.md Part B4 bans a confirmed candidate outright.
  assert.doesNotMatch(bar, /已确认|确认的唯一|精确到分钟|confirmed/);
  assert.doesNotMatch(scale, /已确认|确认的唯一/);
});

test("an unparseable or absent minute yields no label rather than a guess", () => {
  assert.equal(workingMinuteLabel(null, false), null);
  assert.equal(workingMinuteLabel(undefined, false), null);
  assert.equal(workingMinuteLabel("", false), null);
  assert.equal(workingMinuteLabel("25:99", false), null);
  const view = buildRectificationTimeline({
    searchWindow: ["04:45", "05:15"],
    credibleRange: ["05:07", "05:09"],
    candidateTimes: [],
    stage: "minute",
  });
  assert.equal(view?.workingLabel, null);
  assert.equal(view?.answeredLabel, null);
  assert.equal(view?.datedEventLabel, null);
});

test("the answered count is read off the projection, never counted here", () => {
  // `inference_state.answered_probe_count` is the server's own figure.
  const withCount = candidateSnapshot({
    decisionReceipt: { inference_state: { answered_probe_count: 6 } },
  });
  assert.equal(withCount?.answeredProbeCount, 6);
  assert.equal(answeredProbeLabel(6), "已答 6 题");

  // No count on the wire means no readout. A zero invented here would be a
  // number the projection never said.
  const withoutCount = candidateSnapshot();
  assert.equal(withoutCount?.answeredProbeCount, null);
  assert.equal(answeredProbeLabel(null), null);
  assert.equal(answeredProbeLabel(0), null);
  assert.equal(answeredProbeLabel(1.5), null);
  assert.equal(datedEventLabel(3), "已对照 3 件");
  assert.equal(datedEventLabel(null), null);
  assert.equal(datedEventLabel(0), null);

  // The label echoes its argument. Nothing in its body counts, adds or walks a
  // transcript to arrive at the number.
  const body = scale.slice(
    scale.indexOf("export function answeredProbeLabel"),
    scale.indexOf("export function answeredProbeLabel") + 400,
  );
  assert.match(body, /return `已答 \$\{count\} 题`;/);
  assert.doesNotMatch(body, /\.length|\+\+|answered_probes|\.filter\(|\.reduce\(/);
});

test("the bar shows no narrowing progress, because no projection carries it", () => {
  // Concession 5 of TASK-cend-surfaces-claude-alignment-20260916: without an
  // "已从 N 分钟收到 M 分钟" field, the bar shows the range and its width and
  // stops. The opening window is on the wire, but comparing it here would both
  // break VOICE.md rule 2 and misreport: the search window *widens* (BUG-572),
  // so the subtraction would announce progress through a widening.
  assert.doesNotMatch(bar, /已从|收到|最初|进度/);
  assert.doesNotMatch(scale, /已从|收到|最初|进度|openingRange|openingWidth/);
  const view = buildRectificationTimeline({
    searchWindow: ["04:45", "05:15"],
    credibleRange: ["05:07", "05:09"],
    candidateTimes: ["05:08"],
    stage: "minute",
    workingTime: "05:08",
    answeredProbeCount: 6,
  });
  assert.equal(view?.widthLabel, "3 分钟");
  assert.deepEqual(
    Object.keys(view ?? {}).filter((key) => /progress|opening|initial/i.test(key)),
    [],
  );
});

test("the bar renders all four readings on one line and stays a fixed height", () => {
  const html = renderToStaticMarkup(createElement(RectificationTimeline, {
    view: buildRectificationTimeline({
      searchWindow: ["04:45", "05:15"],
      credibleRange: ["05:07", "05:09"],
      candidateTimes: ["05:08"],
      stage: "minute",
      workingTime: "05:08",
      answeredProbeCount: 6,
    }),
  }));
  assert.match(html, /05:07–05:09/);
  assert.match(html, /3 分钟/);
  assert.match(html, /代表分钟 05:08/);
  assert.match(html, /已答 6 题/);
  // All four are in the single readout paragraph, and the assistive label for
  // the axis says the same things in the same order.
  assert.match(html, /rectification-timeline__readout[\s\S]{0,400}已答 6 题<\/span><\/p>/);
  assert.match(html, /aria-label="[^"]*当前区间 05:07–05:09[^"]*代表分钟 05:08[^"]*已答 6 题"/);

  // Height is correctness here: the bar sits outside the scroll container, so a
  // taller bar would move content with nothing observing it. The row grew wider
  // and must not be allowed to wrap.
  const readout = styles.slice(
    styles.indexOf(".rectification-timeline__readout {"),
    styles.indexOf(".rectification-timeline__range {"),
  );
  assert.match(readout, /flex-wrap: nowrap/);
  assert.match(readout, /white-space: nowrap/);
  assert.match(styles, /--rectification-timeline-height: 64px;/);
  assert.match(styles, /--rectification-timeline-height: 56px;/);
});

test("nothing hides the bar on a compact viewport — that is the whole point", () => {
  // On a narrow screen the board becomes an overlay that is closed by default,
  // so this bar is the only place the range and the working minute appear. The
  // chat column keeps its three grid rows in the compact cell.
  assert.match(
    styles,
    /\.rectification-workspace\.is-compact \.rectification-workspace__chat,\s*\n\.rectification-workspace\.is-compact \.rectification-board-overlay \{\s*\n\s*grid-area: 1 \/ 1;/,
  );
  // No rule anywhere hides or collapses the bar under `.is-compact`.
  for (const match of styles.matchAll(/\.is-compact[^{}]*\.rectification-timeline[^{}]*\{([^}]*)\}/g)) {
    assert.doesNotMatch(match[1], /display:\s*none|visibility:\s*hidden|height:\s*0/);
  }
  // Nor does the timeline hide itself at any width.
  const barRule = styles.slice(
    styles.indexOf(".rectification-timeline {"),
    styles.indexOf(".rectification-timeline__readout"),
  );
  assert.doesNotMatch(barRule, /display:\s*none|visibility:\s*hidden/);
});

test("the board folds to two sections and loses none of the five blocks", () => {
  // Exactly two top-level disclosures.
  assert.equal(board.match(/aria-label="候选分钟"/g)?.length, 1);
  assert.equal(board.match(/aria-label="参数与口径"/g)?.length, 1);

  const minutes = board.slice(
    board.indexOf("{hasMinuteDetail && ("),
    board.indexOf("{hasParameterDetail && ("),
  );
  const parameters = board.slice(board.indexOf("{hasParameterDetail && ("));

  // 候选分钟 carries the transition minutes and the secondary candidates.
  assert.match(minutes, /换升时刻/);
  assert.match(minutes, /次级候选/);
  assert.match(minutes, /scoringMinutes\.map/);
  assert.match(minutes, /displayMinutes\.map/);

  // 参数与口径 carries the rest: house table, the confirmation gate, the
  // technique audit, the two-lagna split, the ledger with its dual-track
  // agreement line, and the nakshatra note.
  assert.match(parameters, /<RectificationHouseTableView/);
  assert.match(parameters, /<ConfirmationGateDisclosure/);
  assert.match(parameters, /<TechniqueAuditDisclosure/);
  assert.match(parameters, /两段本命上升/);
  assert.match(parameters, /经历与大运对照/);
  assert.match(parameters, /交界节奏/);
  assert.match(parameters, /agreement \? <p/);

  // Every engine string still goes through the consumer-side display layer.
  assert.equal(board.match(/engineMeaningToDisplayCopy\(/g)?.length, 5);
});

test("regrouping changed no minute-row behaviour", () => {
  assert.match(board, /working \? <span className="rectification-board__minute-note">当前时间<\/span>/);
  assert.match(board, /changed \? "is-changed" : ""/);
  assert.match(board, /working \? "is-working" : ""/);
  assert.match(
    board,
    /changedMinutes\.has\(row\.at\) \? "rectification-board__minute is-changed" : "rectification-board__minute"/,
  );
});

test("both sections stay closed by default and every summary is still reachable", () => {
  // Keyboard access must be no worse than before: nesting adds a level, so each
  // disclosure has to remain a real <summary>, never a div with a click handler.
  assert.doesNotMatch(board, /<details[^>]*\sopen[\s>]/);
  assert.doesNotMatch(board, /role="button"|onClick=\{[^}]*toggle/);
  const summaries = board.match(/<summary>/g)?.length ?? 0;
  assert.ok(summaries >= 6, `expected every block to keep its summary, saw ${summaries}`);
});