// Browser harness for the headless-Chrome tests: the real runner and the real LessonView, bundled for the browser.
import { createRoot } from "react-dom/client";
import { createBrowserRunner } from "../../src/web/runner/runner";
import { WORKER_SOURCE } from "../../src/web/runner/worker-source";
import { LessonView } from "../../src/web/lesson/LessonView";
import type { LessonPayload } from "../../src/shared/types";

declare global {
  interface Window {
    stcRun(code: string, tests: string, timeoutMs: number): Promise<unknown>;
    /** Negative control only: the old design, a same-origin blob worker in the page. */
    stcRunPlain(code: string, tests: string, timeoutMs: number): Promise<unknown>;
    stcRenderLesson(markdown: string, hintBody: string): Promise<string>;
    /** Sets unsanitized HTML with innerHTML (bypasses the sanitizer) to test the CSP layer on its own. */
    stcRawHtml(html: string): Promise<number>;
    stcReady: boolean;
  }
}

window.stcRun = (code, tests, timeoutMs) => createBrowserRunner("js").run(code, tests, timeoutMs);
window.stcRunPlain = (code, tests, timeoutMs) => createBrowserRunner("js", {
  createWorker: () => new Worker(URL.createObjectURL(new Blob([WORKER_SOURCE], { type: "text/javascript" })), { type: "module" }),
}).run(code, tests, timeoutMs);

window.stcRenderLesson = async (markdown, hintBody) => {
  const lesson: LessonPayload = {
    courseId: "c", courseTitle: "C", lesson: { id: "x", title: "Exploit", type: "exercise", minutes: null },
    module: { id: "m", title: "M", index: 0 }, locked: false, markdown, baseFile: "course/x.md", trackMarkdown: {}, tracks: [],
    video: null, transcript: null, hints: [{ label: "nudge", body: hintBody }], decks: [], code: null, attachments: [], browser: null,
    localCommand: null, prev: null, next: null, lessonFiles: {},
  };
  const el = document.getElementById("root")!;
  createRoot(el).render(<LessonView lesson={lesson} preview />);
  await new Promise((r) => setTimeout(r, 300));
  // Open every fold so nested content is live in the DOM too.
  for (const d of document.querySelectorAll("details")) d.open = true;
  await new Promise((r) => setTimeout(r, 500));
  return el.innerHTML;
};

window.stcRawHtml = async (html) => {
  let violations = 0;
  document.addEventListener("securitypolicyviolation", () => { violations++; });
  const el = document.createElement("div");
  el.innerHTML = html;
  document.body.append(el);
  for (const a of el.querySelectorAll("a, summary, img")) { try { a.dispatchEvent(new MouseEvent("click", { bubbles: true, cancelable: true })); } catch (_) { /* ignore */ } }
  await new Promise((r) => setTimeout(r, 600));
  return violations;
};

window.stcReady = true;