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

const assert = require("node:assert");
const fs = require("node:fs");
const os = require("node:os");
const path = require("node:path");
const { chromium } = require("playwright");

const BASE_URL = (process.env.MNOTE_WEB_SMOKE_BASE_URL || "http://127.0.0.1:3000").replace(/\/+$/, "");
const UI_TIMEOUT_MS = Number(process.env.MNOTE_SMOKE_UI_TIMEOUT_MS || 30_000);
const OUTPUT_DIR = path.join(process.cwd(), "tmp", "7-68-runtime");
const RESULT_PATH = path.join(OUTPUT_DIR, "task779-openhub-file-edit-document-pane-refresh-result.json");
const SCREENSHOT_PATH = path.join(OUTPUT_DIR, "task779-openhub-file-edit-document-pane-refresh.png");
const CHROMIUM_EXECUTABLE_PATH = process.env.PLAYWRIGHT_CHROMIUM_EXECUTABLE_PATH
  || ["/usr/bin/chromium-browser", "/usr/bin/chromium", "/usr/bin/google-chrome-stable", "/usr/bin/google-chrome", "/snap/bin/chromium"]
    .find((candidate) => fs.existsSync(candidate));

function fileUrl(localPath) {
  return `file://${localPath}`;
}

function localMdDocumentId(relativePath) {
  return `local-md:${relativePath.replaceAll("/", "~2F")}`;
}

function documentUrl(root, relativePath, workspaceId) {
  const url = new URL(`${BASE_URL}/documents/${encodeURIComponent(localMdDocumentId(relativePath))}`);
  url.searchParams.set("sourceKind", "local_folder");
  url.searchParams.set("rootUri", fileUrl(root));
  if (workspaceId) url.searchParams.set("workspaceId", workspaceId);
  return url.toString();
}

function markdown(title, lines) {
  return ["---", `title: ${title}`, "---", "", ...lines, ""].join("\n");
}

function writeWorkspaceManifest(root, ownerId, workspaceId) {
  const metadataDir = path.join(root, ".mnote");
  fs.mkdirSync(metadataDir, { recursive: true });
  fs.writeFileSync(
    path.join(metadataDir, "workspace.json"),
    `${JSON.stringify({
      workspaceId,
      ownerId,
      createdAt: new Date().toISOString(),
      capabilities: ["local_files", "markdown_edit"],
    }, null, 2)}\n`,
    "utf8",
  );
}

async function waitForEditorText(page, text) {
  await page.waitForFunction(
    (expected) => {
      const editor = document.querySelector('.document-pane[data-pane-role="primary"] .editor-surface .ProseMirror');
      return (editor?.textContent || "").includes(expected);
    },
    text,
    { timeout: UI_TIMEOUT_MS },
  );
}

async function readDocumentPaneState(page) {
  return page.evaluate(() => {
    const root = document.querySelector('[data-testid="mnote-leptos-tiptap-island-editor-root"][data-pane-role="primary"]');
    const pane = document.querySelector('.document-pane[data-pane-role="primary"]');
    const editor = document.querySelector('.document-pane[data-pane-role="primary"] .editor-surface .ProseMirror');
    const aggregateNode = document.getElementById("__MNOTE_PAGE_AGGREGATE__");
    let aggregate = null;
    try {
      aggregate = JSON.parse(aggregateNode?.textContent || "null");
    } catch {}
    return {
      paneDocumentId: pane?.getAttribute("data-pane-document-id") || "",
      runtimeStatus: root?.getAttribute("data-runtime-editor-status") || "",
      runtimeError: root?.getAttribute("data-runtime-editor-error") || "",
      editorText: editor?.textContent || "",
      aggregateText: JSON.stringify(aggregate?.body || aggregate || {}),
      syncedAt: aggregateNode?.getAttribute("data-mnote-page-aggregate-synced-at") || "",
      openhubRefreshMarker: document.documentElement.getAttribute("data-mnote-page-ai-openhub-document-pane-refresh") || "",
      eventBusSource: document.documentElement.getAttribute("data-mnote-local-folder-event-bus-last-source") || "",
      eventBusReason: document.documentElement.getAttribute("data-mnote-local-folder-event-bus-last-reason") || "",
      documentSessionDebug: window.__mnoteDebugDocumentSessions?.snapshot?.() || null,
    };
  });
}

async function openDocument(page, root, relativePath, workspaceId) {
  await page.goto(documentUrl(root, relativePath, workspaceId), { waitUntil: "commit", timeout: UI_TIMEOUT_MS });
  await page.locator('[data-testid="mnote-leptos-tiptap-island-editor-root"]').first().waitFor({
    state: "visible",
    timeout: UI_TIMEOUT_MS,
  });
  await page.locator('.document-pane[data-pane-role="primary"] .editor-surface .ProseMirror').first().waitFor({
    state: "visible",
    timeout: UI_TIMEOUT_MS,
  });
}

async function waitForPageAiRuntime(page) {
  await page.waitForFunction(
    () => typeof window.__mnoteSidebarPageAiRuntime?.openPageAiDrawer === "function"
      && typeof window.__mnoteDocumentPaneRuntime?.refreshPrimaryDocument === "function"
      && typeof window.__mnoteDocumentPaneRuntime?.openPrimaryDocument === "function",
    null,
    { timeout: UI_TIMEOUT_MS },
  );
}

async function installOpenHubChangedFileBridge(page) {
  await page.evaluate(() => {
    try {
      localStorage.setItem("mnote.page_ai.openhub_host", "1");
    } catch {}
    window.__mnoteSidebarPageAiRuntime.openPageAiDrawer();
  });
  await page.locator('[data-testid="wolai-page-ai-drawer"][data-page-ai-openhub-host="true"]').first().waitFor({
    state: "visible",
    timeout: UI_TIMEOUT_MS,
  });
}

async function simulateOpenHubChangedFile(page, root, relativePath, workspaceId) {
  return page.evaluate(({ rootUri, path, workspaceId }) => {
    window.postMessage({
      type: "mnote:open-file",
      source: "openhub-changed-files",
      path,
      rootUri,
      workspaceId,
      documentId: `local-md:${path.replaceAll("/", "~2F")}`,
    }, window.location.origin);
    return true;
  }, { rootUri: fileUrl(root), path: relativePath, workspaceId });
}

async function run() {
  fs.mkdirSync(OUTPUT_DIR, { recursive: true });
  const root = fs.mkdtempSync(path.join(os.tmpdir(), "mnote-task779-openhub-pane-refresh-"));
  const workspaceId = `local-ws:user_real:task779:${Date.now()}`;
  const relativePath = "task779-openhub-refresh.md";
  const initialText = "task779 initial document pane text";
  const changedText = `task779 openhub changed file bridge ${Date.now()}`;
  writeWorkspaceManifest(root, "user_real", workspaceId);
  fs.writeFileSync(path.join(root, relativePath), markdown("Task 779 OpenHub Refresh", [initialText]), "utf8");

  const browser = await chromium.launch({
    headless: process.env.HEADFUL !== "1",
    ...(CHROMIUM_EXECUTABLE_PATH ? { executablePath: CHROMIUM_EXECUTABLE_PATH } : {}),
  });
  const context = await browser.newContext({
    viewport: { width: 1360, height: 900 },
    locale: "zh-CN",
    extraHTTPHeaders: {
      "x-mnote-actor-id": "user_real",
      "x-mnote-actor-type": "user",
    },
  });
  const page = await context.newPage();
  const debug = { root, workspaceId, relativePath, initialText, changedText };

  try {
    await openDocument(page, root, relativePath, workspaceId);
    await waitForEditorText(page, initialText);
    await waitForPageAiRuntime(page);
    await installOpenHubChangedFileBridge(page);
    debug.before = await readDocumentPaneState(page);

    fs.writeFileSync(
      path.join(root, relativePath),
      markdown("Task 779 OpenHub Refresh", [changedText]),
      "utf8",
    );

    const opened = await simulateOpenHubChangedFile(page, root, relativePath, workspaceId);
    assert.equal(opened, true, "OpenHub changed-file bridge 应接受当前 Markdown path");
    await waitForEditorText(page, changedText);
    debug.after = await readDocumentPaneState(page);
    assert.equal(debug.after.paneDocumentId, localMdDocumentId(relativePath), "primary document pane 应仍打开测试 Markdown");
    assert(debug.after.editorText.includes(changedText), `document pane 应显示磁盘新内容: ${debug.after.editorText}`);
    assert(!debug.after.editorText.includes(initialText), `document pane 不应保留旧正文: ${debug.after.editorText}`);
    assert.equal(debug.after.openhubRefreshMarker, relativePath, "应记录 OpenHub document pane refresh marker");
    assert.equal(debug.after.eventBusSource, "openhub_changed_file_bridge", "应复用 local-folder event bus synthetic watch batch");

    await page.screenshot({ path: SCREENSHOT_PATH, fullPage: true });
    const result = {
      ok: true,
      task: "task779-openhub-file-edit-document-pane-refresh-smoke",
      root,
      relativePath,
      documentId: localMdDocumentId(relativePath),
      changedText,
      beforeText: debug.before.editorText,
      afterText: debug.after.editorText,
      eventBusSource: debug.after.eventBusSource,
      eventBusReason: debug.after.eventBusReason,
      resultPath: RESULT_PATH,
      screenshotPath: SCREENSHOT_PATH,
    };
    fs.writeFileSync(RESULT_PATH, `${JSON.stringify(result, null, 2)}\n`, "utf8");
    console.log(`ok task779-openhub-file-edit-document-pane-refresh-smoke ${RESULT_PATH}`);
  } catch (error) {
    fs.writeFileSync(RESULT_PATH, `${JSON.stringify({
      ok: false,
      error: String(error && error.stack || error),
      debug,
    }, null, 2)}\n`, "utf8");
    throw error;
  } finally {
    await browser.close().catch(() => {});
    fs.rmSync(root, { recursive: true, force: true });
  }
}

run().catch((error) => {
  console.error(error);
  process.exitCode = 1;
});