#!/usr/bin/env node
"use strict";

const assert = require("node:assert/strict");
const fs = require("node:fs");
const http = require("node:http");
const net = require("node:net");
const os = require("node:os");
const path = require("node:path");
const { spawn } = require("node:child_process");
const { chromium } = require("playwright");

const ROOT = path.resolve(__dirname, "..");
const {
  setupWorkspaceAccess,
  getAiRuntimeRun,
  countAiRuntimeEvents,
} = require(path.join(ROOT, "scripts", "lib", "control-plane-dev-seed"));
const OUT_DIR = process.env.MNOTE_PAGE_AI_HERMES_LOAD_REPLAY_OUTPUT_DIR || fs.mkdtempSync(path.join(ROOT, "tmp", "task560-hermes-load-replay-"));
const TIMEOUT_MS = Number(process.env.MNOTE_SMOKE_UI_TIMEOUT_MS || 90_000);
const CHROME = process.env.MNOTE_PAGE_AI_CHROME || "/usr/bin/google-chrome";
const ACTOR = "mnote-e2e";
const PASSWORD = process.env.MNOTE_E2E_PASSWORD || "MnoteE2E123!";

function pickPort() {
  return new Promise((resolve, reject) => {
    const server = net.createServer();
    server.listen(0, "127.0.0.1", () => {
      const address = server.address();
      const port = address && typeof address === "object" ? address.port : 0;
      server.close(() => resolve(port));
    });
    server.on("error", reject);
  });
}

function waitForHttpOk(url, timeoutMs) {
  const deadline = Date.now() + timeoutMs;
  return new Promise((resolve, reject) => {
    const tick = () => {
      const request = http.get(url, (response) => {
        response.resume();
        if (response.statusCode >= 200 && response.statusCode < 500) return resolve();
        retry();
      });
      request.on("error", retry);
      request.setTimeout(1000, () => { request.destroy(); retry(); });
    };
    const retry = () => {
      if (Date.now() > deadline) return reject(new Error(`server_not_ready: ${url}`));
      setTimeout(tick, 250);
    };
    tick();
  });
}

function writeFakeHermesAcp(scriptPath) {
  fs.writeFileSync(scriptPath, `
import * as readline from 'node:readline';
import { stdin as input, stdout as output } from 'node:process';
import fs from 'node:fs';
const rl = readline.createInterface({ input, output, terminal: false });
const replay = process.env.MNOTE_TASK560_HERMES_REPLAY === '1';
const logPath = process.env.MNOTE_TASK560_FAKE_LOG || '';
let nextId = 1;
function log(entry) { if (logPath) fs.appendFileSync(logPath, JSON.stringify({ ...entry, at: Date.now() }) + '\\n'); }
function send(value) { process.stdout.write(JSON.stringify(value) + '\\n'); }
function promptText(prompt) { return (Array.isArray(prompt) ? prompt : []).map((block) => block && block.type === 'text' ? String(block.text || '') : '').join('\\n'); }
function markerFrom(text) { return (String(text || '').match(/TASK560_[A-Z0-9_]+/) || ['TASK560_FALLBACK'])[0]; }
rl.on('line', (line) => {
  const msg = JSON.parse(line);
  if (!msg.id) return;
  if (msg.method === 'initialize') {
    log({ method: msg.method });
    send({ jsonrpc: '2.0', id: msg.id, result: { protocolVersion: 1, agentCapabilities: { loadSession: true }, agentInfo: { name: 'task560-fake-hermes', version: '1.0' }, authMethods: [] } });
  } else if (msg.method === 'session/new') {
    const sessionId = 'task560_hermes_session_' + nextId++;
    log({ method: msg.method, sessionId });
    send({ jsonrpc: '2.0', id: msg.id, result: { sessionId } });
  } else if (msg.method === 'session/load') {
    const sessionId = msg.params?.sessionId || 'missing_session';
    log({ method: msg.method, sessionId, replay });
    if (replay) {
      send({ jsonrpc: '2.0', method: 'session/update', params: { sessionId, update: { sessionUpdate: 'agent_message_chunk', content: { type: 'text', text: 'TASK560_REPLAY_SHOULD_NOT_APPEAR' } } } });
    }
    send({ jsonrpc: '2.0', id: msg.id, result: { sessionId } });
  } else if (msg.method === 'session/prompt') {
    const sessionId = msg.params?.sessionId || '';
    const marker = markerFrom(promptText(msg.params?.prompt));
    log({ method: msg.method, sessionId, marker });
    send({ jsonrpc: '2.0', method: 'session/update', params: { sessionId, update: { sessionUpdate: 'agent_message_chunk', content: { type: 'text', text: marker } } } });
    send({ jsonrpc: '2.0', id: msg.id, result: { stopReason: 'end_turn' } });
  }
});
`, "utf8");
}

async function signIn(context, baseUrl) {
  const response = await context.request.fetch(`${baseUrl}/api/auth`, {
    method: "POST",
    headers: { "content-type": "application/json" },
    data: { action: "auth:signIn", args: { provider: "password", params: { account: ACTOR, password: PASSWORD, flow: "signIn" } } },
    timeout: TIMEOUT_MS,
  });
  const text = await response.text();
  assert(response.ok(), `/api/auth 登录失败: ${response.status()} ${text.slice(0, 500)}`);
  const whoami = await context.request.fetch(`${baseUrl}/api/auth/whoami`, { timeout: TIMEOUT_MS });
  const whoamiText = await whoami.text();
  assert(whoami.ok(), `/api/auth/whoami 失败: ${whoami.status()} ${whoamiText.slice(0, 500)}`);
  return JSON.parse(whoamiText);
}

async function selectHermes(page) {
  await page.locator("[data-page-ai-agent-button]").click({ timeout: TIMEOUT_MS });
  await page.locator("[data-page-ai-agent-popover]").waitFor({ state: "visible", timeout: TIMEOUT_MS });
  await page.locator('[data-page-ai-agent-id="hermes"]').first().click({ timeout: TIMEOUT_MS });
  await page.waitForFunction(
    () => document.querySelector('[data-testid="wolai-page-ai-drawer"]')?.getAttribute('data-mnote-acp-runtime') === 'hermes',
    null,
    { timeout: TIMEOUT_MS },
  );
}

function normalize(text) {
  return String(text || "").replace(/\s+/g, "").trim();
}

async function newestAssistantText(page, beforeCount) {
  return await page.evaluate((countBefore) => {
    const nodes = Array.from(document.querySelectorAll('[data-testid="wolai-page-ai-drawer"] .wolai-page-ai-message--assistant'));
    const node = nodes.slice(countBefore).at(-1) || nodes.at(-1);
    return node?.querySelector('.wolai-page-ai-message-text')?.textContent || '';
  }, beforeCount);
}

async function sendPrompt(page, prompt, expectedCompact) {
  const before = await page.locator('[data-testid="wolai-page-ai-drawer"] .wolai-page-ai-message--assistant').count();
  await page.locator('[data-page-ai-input]').fill(prompt, { timeout: TIMEOUT_MS });
  await page.locator('[data-page-ai-action="send"]').click({ timeout: TIMEOUT_MS });
  await page.waitForFunction(
    () => ['completed', 'failed', 'aborted'].includes(document.documentElement.getAttribute('data-mnote-page-ai-run-status') || ''),
    null,
    { timeout: Math.max(TIMEOUT_MS, 120_000) },
  );
  const status = await page.evaluate(() => document.documentElement.getAttribute('data-mnote-page-ai-run-status') || '');
  assert.equal(status, 'completed', `Page AI run 应完成，实际 status=${status}`);
  await page.waitForFunction(() => !document.querySelector('[data-page-ai-streaming="true"]'), null, { timeout: TIMEOUT_MS });
  const text = await newestAssistantText(page, before);
  assert.equal(normalize(text), expectedCompact, `AI 回复不符合预期: ${JSON.stringify(text.slice(0, 800))}`);
  assert(!normalize(text).includes('TASK560_REPLAY_SHOULD_NOT_APPEAR'), 'Hermes replay 不应出现在当前 assistant 正文');
  const runId = await page.evaluate(() => document.documentElement.getAttribute('data-mnote-page-ai-run-id') || '');
  assert(runId, '缺少 data-mnote-page-ai-run-id');
  return { runId, text };
}

function readFakeLog(logPath) {
  if (!fs.existsSync(logPath)) return [];
  return fs.readFileSync(logPath, 'utf8').trim().split(/\n+/).filter(Boolean).map((line) => JSON.parse(line));
}

async function runVariant({ replay }) {
  const variant = replay ? 'with-replay' : 'no-replay';
  const variantDir = path.join(OUT_DIR, variant);
  fs.mkdirSync(variantDir, { recursive: true });
  const fakeScript = path.join(variantDir, 'fake-hermes-acp.mjs');
  const fakeLog = path.join(variantDir, 'fake-hermes-acp.jsonl');
  writeFakeHermesAcp(fakeScript);
  const port = await pickPort();
  const baseUrl = `http://127.0.0.1:${port}`;
  const runtimes = JSON.stringify([{ name: 'hermes', bin: 'node', args: [fakeScript], env: { MNOTE_TASK560_HERMES_REPLAY: replay ? '1' : '0', MNOTE_TASK560_FAKE_LOG: fakeLog }, title: 'Hermes Fake' }]);
  const server = spawn('cargo', ['run', '-q', '-p', 'mnote-web', '--bin', 'mnote-web'], {
    cwd: path.join(ROOT, 'rust'),
    env: { ...process.env, MNOTE_WEB_BIND: `127.0.0.1:${port}`, MNOTE_WEB_PUBLIC_BIND: `127.0.0.1:${port}`, MNOTE_WEB_ACP_RUNTIMES: runtimes, MNOTE_WEB_ACP_DEFAULT_RUNTIME: 'hermes' },
    stdio: ['ignore', 'pipe', 'pipe'],
  });
  let stderr = '';
  server.stderr.on('data', (chunk) => { stderr += chunk.toString(); });
  server.stdout.on('data', () => {});
  let browser;
  const root = fs.mkdtempSync(path.join(os.tmpdir(), `mnote-task560-hermes-${variant}-`));
  try {
    await waitForHttpOk(`${baseUrl}/health`, TIMEOUT_MS);
    browser = await chromium.launch({ headless: process.env.HEADFUL !== '1', executablePath: fs.existsSync(CHROME) ? CHROME : undefined });
    const context = await browser.newContext({ viewport: { width: 1440, height: 960 } });
    const page = await context.newPage();
    const capturedRuns = [];
    page.on('request', (request) => {
      if (!request.url().includes('/api/hermes/client/runs') || request.method() !== 'POST') return;
      try { capturedRuns.push(JSON.parse(request.postData() || '{}')); } catch { capturedRuns.push({ raw: request.postData() || '' }); }
    });
    const viewer = await signIn(context, baseUrl);
    const actorId = viewer.userId || ACTOR;
    const suffix = `${Date.now().toString(36)}_${variant.replace('-', '_')}`.toUpperCase();
    const workspaceId = `local-ws:${actorId}:task560-${suffix.toLowerCase()}`;
    const rootUri = `file://${root}`;
    const relativePath = `Task560-${suffix}.md`;
    const documentId = `local-md:${relativePath.replaceAll("/", "~2F")}`;
    fs.mkdirSync(path.join(root, '.mnote'), { recursive: true });
    fs.writeFileSync(path.join(root, '.mnote', 'workspace.json'), `${JSON.stringify({ workspaceId, ownerId: actorId }, null, 2)}\n`, 'utf8');
    fs.writeFileSync(path.join(root, relativePath), `# Task560 Hermes Load Replay\n\n${suffix}\n`, 'utf8');
    // 通过 API helper 写入 workspace/用户/授权，不再直写 SQLite
    await setupWorkspaceAccess(context.request, baseUrl, {
      actorId,
      email: `${actorId}@example.com`,
      username: actorId,
      displayName: actorId,
      role: "user",
      workspaceId,
      workspaceName: "Task560 Hermes Load Replay",
      rootUri,
      rootPath: root,
      sourceKind: "local_folder",
      permission: "write",
      capabilities: ["ai"],
      grantSource: "smoke",
      grantCreatedBy: actorId,
      timeoutMs: TIMEOUT_MS,
    });
    const url = new URL(`${baseUrl}/documents/${encodeURIComponent(documentId)}`);
    url.searchParams.set('sourceKind', 'local_folder');
    url.searchParams.set('rootUri', rootUri);
    url.searchParams.set('workspaceId', workspaceId);
    await page.goto(url.toString(), { waitUntil: 'domcontentloaded', timeout: TIMEOUT_MS });
    await page.getByTestId('wolai-floating-ai').click({ timeout: TIMEOUT_MS });
    await selectHermes(page);

    const firstMarker = `TASK560_FIRST_${suffix}`;
    const secondMarker = `TASK560_SECOND_${suffix}`;
    const first = await sendPrompt(page, `只回复 ${firstMarker}，不要解释。`, firstMarker);
    const second = await sendPrompt(page, `只回复 ${secondMarker}，不要解释。`, secondMarker);
    assert.equal(capturedRuns.length, 2, `应捕获两次 Hermes Page AI run，实际 ${capturedRuns.length}`);
    assert(capturedRuns.every((body) => body.acpRuntime === 'hermes'), '两次 run 都应走 Hermes ACP');
    assert(capturedRuns[1].acpSessionId, '第二轮请求应携带上一轮 acpSessionId');

    // 通过 API helper + capturedRuns + fake ACP log 验证持久化和 replay 行为，不再直读 SQLite events
    const firstRun = await getAiRuntimeRun(context.request, baseUrl, { userId: actorId, runId: first.runId });
    const secondRun = await getAiRuntimeRun(context.request, baseUrl, { userId: actorId, runId: second.runId });
    assert(firstRun, `first run ${first.runId} 应 persist`);
    assert(secondRun, `second run ${second.runId} 应 persist`);

    const infoCount1 = await countAiRuntimeEvents(context.request, baseUrl, { userId: actorId, runId: first.runId, eventType: 'session.info.updated' });
    const infoCount2 = await countAiRuntimeEvents(context.request, baseUrl, { userId: actorId, runId: second.runId, eventType: 'session.info.updated' });
    assert(Number(infoCount1) >= 1, `first run 应有 session.info.updated`);
    assert(Number(infoCount2) >= 1, `second run 应有 session.info.updated`);

    const acpSessionIds = [capturedRuns[0].acpSessionId, capturedRuns[1].acpSessionId].filter(Boolean);
    assert.equal(new Set(acpSessionIds).size, 1, `Hermes load 后应复用 stored acpSessionId: ${JSON.stringify(acpSessionIds)}`);

    // adapter_replay 事件的 payload filter（source === 'adapter_replay'）需要新的 dev seed kind
    // （listAiRuntimeEvents 或 countByPayloadField），当前通过 fake ACP log 验证 session/load 行为
    const fakeLogRows = readFakeLog(fakeLog);
    assert(fakeLogRows.some((row) => row.method === 'session/new'), '第一轮应调用 session/new');
    assert(fakeLogRows.some((row) => row.method === 'session/load' && row.sessionId === acpSessionIds[0]), '第二轮应先 session/load stored acpSessionId');
    const screenshotPath = path.join(variantDir, 'task560-hermes-load-replay.png');
    await page.screenshot({ path: screenshotPath, fullPage: true });
    const result = { ok: true, variant, baseUrl, root, rootUri, workspaceId, documentId, first, second, acpSessionId: acpSessionIds[0], fakeLogRows, capturedRuns, screenshotPath };
    fs.writeFileSync(path.join(variantDir, 'result.json'), `${JSON.stringify(result, null, 2)}\n`, 'utf8');
    await context.close().catch(() => undefined);
    return result;
  } catch (error) {
    fs.writeFileSync(path.join(variantDir, 'failure.json'), `${JSON.stringify({ ok: false, variant, error: String(error && error.stack || error), stderr, fakeLog: readFakeLog(fakeLog) }, null, 2)}\n`, 'utf8');
    throw error;
  } finally {
    if (browser) await browser.close().catch(() => undefined);
    server.kill('SIGTERM');
    await new Promise((resolve) => server.once('exit', resolve));
    if (process.env.MNOTE_KEEP_TASK560_ROOT !== '1') fs.rmSync(root, { recursive: true, force: true });
  }
}

async function main() {
  fs.mkdirSync(OUT_DIR, { recursive: true });
  const results = [];
  results.push(await runVariant({ replay: false }));
  results.push(await runVariant({ replay: true }));
  const summary = { ok: true, outDir: OUT_DIR, results: results.map((result) => ({ variant: result.variant, acpSessionId: result.acpSessionId, first: result.first.runId, second: result.second.runId, screenshotPath: result.screenshotPath })) };
  fs.writeFileSync(path.join(OUT_DIR, 'result.json'), `${JSON.stringify(summary, null, 2)}\n`, 'utf8');
  console.log(JSON.stringify(summary, null, 2));
}

main().catch((error) => {
  console.error(error && error.stack ? error.stack : error);
  process.exit(1);
});