import assert from "node:assert/strict";
import { readFileSync } from "node:fs";
import test from "node:test";

import { homeSurface as page } from "./home-surface.ts";
import {
  consultSendBlockedByRectificationSession,
  dropRectificationStoredPending,
  fallbackSessionId,
  RECTIFICATION_OPENING_COMPOSER_PLACEHOLDER,
  RECTIFICATION_REOPEN_LABEL,
  rectificationOrdinaryComposerReopen,
  SESSION_NOT_CONSULTATION_CODE,
} from "../src/lib/rectification-session-composer-guard.ts";

const read = (relativePath: string) => readFileSync(new URL(relativePath, import.meta.url), "utf8");
const run = read("../src/hooks/use-consultation-run.ts");
const sessions = read("../src/hooks/use-session-management.ts");
const consultRoute = read("../src/app/api/consult/route.ts");
const pageSource = read("../src/app/(app)/page.tsx");
const sendFn = run.slice(run.indexOf("async function send("), run.indexOf('await fetch("/api/consult"'));

test("a rectification session blocks consult send and keeps the draft", () => {
  assert.equal(consultSendBlockedByRectificationSession({ sessionType: "birth_time_rectification" }), true);
  assert.equal(consultSendBlockedByRectificationSession({ sessionType: "consultation" }), false);
  assert.match(sendFn, /consultSendBlockedByRectificationSession\(currentSession\)/);
  assert.match(sendFn, /setDraft\(originalQuestion\)/);
  assert.match(sendFn, /openRectificationSession\(currentSession\.id\)/);
  assert.doesNotMatch(sendFn, /fetch\("\/api\/consult"/);
});

test("pending consult replay pointing at a rectification session is dropped", () => {
  assert.equal(
    dropRectificationStoredPending(
      { sessionId: "r1" },
      [{ id: "r1", sessionType: "birth_time_rectification" }],
    ),
    null,
  );
  assert.deepEqual(
    dropRectificationStoredPending(
      { sessionId: "c1" },
      [{ id: "c1", sessionType: "consultation" }],
    ),
    { sessionId: "c1" },
  );
  assert.match(run, /if \(consultSendBlockedByRectificationSession\(session\)\) \{[\s\S]*sessionStorage\.removeItem\(pendingConsultationStorageKey\)/);
});

test("consult POST splits missing session from wrong session type", () => {
  assert.match(consultRoute, /if \(!chatSession\) \{[\s\S]*咨询会话不存在[\s\S]*status: 404/);
  assert.match(
    consultRoute,
    /if \(chatSession\.session_type !== "consultation"\) \{[\s\S]*session_not_consultation[\s\S]*status: 409/,
  );
  assert.match(consultRoute, /这是生时校正会话/);
  assert.match(consultRoute, /请在生时校正里继续。/);
  assert.equal(SESSION_NOT_CONSULTATION_CODE, "session_not_consultation");
  assert.match(run, /caught\.code === SESSION_NOT_CONSULTATION_CODE/);
});

test("ordinary composer is locked on a rectification session until the surface opens", () => {
  assert.equal(RECTIFICATION_OPENING_COMPOSER_PLACEHOLDER, "正在打开生时校正…");
  assert.equal(RECTIFICATION_REOPEN_LABEL, "重新打开生时校正");
  assert.match(pageSource, /inputDisabled=\{[^}]*activeRectificationSession/);
  assert.match(pageSource, /submitBlocked=\{[^}]*activeRectificationSession/);
  assert.match(pageSource, /ordinaryComposerPlaceholder\(/);
  assert.match(pageSource, /RectificationComposerReopen/);
  assert.equal(
    rectificationOrdinaryComposerReopen({
      activeRectificationSession: true,
      error: "生时校正会话暂时无法打开，请稍后重试。",
      errorSessionId: "s1",
      sessionId: "s1",
    }),
    true,
  );
  assert.equal(
    rectificationOrdinaryComposerReopen({
      activeRectificationSession: true,
      error: "",
      errorSessionId: null,
      sessionId: "s1",
    }),
    false,
  );
});

test("delete and popstate fallbacks do not setActiveSessionId onto a rectification session", () => {
  assert.equal(
    fallbackSessionId([
      { id: "r1", sessionType: "birth_time_rectification" },
      { id: "c1", sessionType: "consultation" },
    ]),
    "c1",
  );
  assert.equal(
    fallbackSessionId([{ id: "r1", sessionType: "birth_time_rectification" }]),
    "r1",
  );
  assert.match(sessions, /function activateFallbackSession/);
  assert.match(sessions, /if \(fallback\?\.sessionType === "birth_time_rectification"\) \{\s*selectSession\(fallbackId\);/);
  assert.match(sessions, /if \(activeSessionId === session.id\) \{\s*activateFallbackSession\(nextSessions\);/);
  assert.match(sessions, /const fallbackId = fallbackSessionId\(listed\);/);
  assert.match(page, /sessions.find\(\(session\) => session.sessionType !== "birth_time_rectification"\)/);
});