// @vitest-environment jsdom
import { afterEach, beforeAll, describe, expect, it } from "vitest";

import { clear, events, setLevel } from "./log";
import { installClientLog } from "./logHooks";

// History is wrapped ONCE per window (installClientLog is idempotent), so this file installs once
// and every test reads only what it caused.
// The app passes i18n/appCopy.ts; here only "Frissítés" (and "Refresh") is app copy, read as "Refresh".
const appCopy = (text: string | null) =>
  ["Refresh", "Frissítés"].includes(text?.trim() ?? "") ? "Refresh" : null;

beforeAll(() => {
  installClientLog(appCopy);
  installClientLog(appCopy); // a hot reload's second call must not wrap History twice
  expect(events().map((e) => e.event)).toEqual(["app.start", "nav.view"]);
  clear();
});
afterEach(() => {
  setLevel("INFO");
  window.history.replaceState(null, "", "/");
  clear();
});

const views = () => events().filter((e) => e.event === "nav.view");

describe("client log hooks", () => {
  it("records a page change once, and not a replaceState that only saves a scroll position", () => {
    window.history.pushState({ sfPage: "feed" }, "", "/?show=all");
    window.history.replaceState({ sfPage: "feed", sfScroll: 120 }, "");
    window.history.replaceState({ sfPage: "feed", sfScroll: 480 }, "");
    expect(views()).toHaveLength(1);
    expect(views()[0]!.attrs).toMatchObject({
      via: "push",
      page: "feed",
      path: "/",
      params: ["show"],
      overlay: false,
    });
  });

  it("keeps parameter NAMES at the base level, values at DEBUG, typed search only at TRACE", () => {
    window.history.pushState({ sfPage: "feed" }, "", "/?tags=music&q=lofi");
    expect(views()[0]!.attrs).not.toHaveProperty("values");
    expect(JSON.stringify(views())).not.toContain("lofi");

    setLevel("DEBUG");
    window.history.pushState({ sfPage: "plex" }, "", "/?tags=music&q=lofi");
    expect(views()[1]!.attrs!.values).toEqual({ tags: "music" });

    setLevel("TRACE");
    window.history.pushState({ sfPage: "feed", _yt: "lofi" }, "", "/?tags=music&q=lofi");
    expect(views()[2]!.attrs).toMatchObject({
      values: { tags: "music", q: "lofi" },
      query: "lofi",
    });
  });

  it("records an overlay opening as a view of its own, and Back as a pop", () => {
    window.history.pushState({ sfPage: "feed", _ov: 1 }, "");
    // What Back does: the browser restores the previous entry's state (the unwrapped prototype
    // method, as the browser itself would not go through the app's wrapper), then fires popstate.
    History.prototype.replaceState.call(window.history, { sfPage: "feed" }, "");
    window.dispatchEvent(new PopStateEvent("popstate"));
    expect(views().map((e) => [e.attrs!.via, e.attrs!.overlay])).toEqual([
      ["push", true],
      ["pop", false],
    ]);
  });

  it("never records a token that rides in the address", () => {
    window.history.replaceState(
      { sfPage: "welcome" },
      "",
      "/watch/Ab3xYz9Tok/unlock?token=zzz#reset=yyy",
    );
    setLevel("TRACE");
    window.history.pushState(
      { sfPage: "welcome2" },
      "",
      "/watch/Ab3xYz9Tok/unlock?token=zzz#reset=yyy",
    );
    const text = JSON.stringify(views());
    expect(text).not.toContain("Ab3xYz9Tok");
    expect(text).not.toContain("zzz");
    expect(text).not.toContain("yyy");
  });

  it("records uncaught errors and unhandled rejections", () => {
    window.dispatchEvent(
      new ErrorEvent("error", {
        error: new TypeError("x is undefined"),
        message: "x is undefined",
        filename: "http://localhost/assets/index-B1x9.js",
        lineno: 3,
        colno: 7,
      }),
    );
    const rejection = new Event("unhandledrejection") as Event & { reason: unknown };
    rejection.reason = new Error("nope");
    window.dispatchEvent(rejection);
    window.dispatchEvent(new Event("error")); // a failed <img> load: not a script fault

    expect(events().map((e) => [e.event, e.level])).toEqual([
      ["app.uncaught", "ERROR"],
      ["app.unhandled_rejection", "ERROR"],
    ]);
    expect(events()[0]!.attrs).toMatchObject({
      error: "TypeError",
      where: "/assets/index-B1x9.js:3:7",
    });
  });
});

describe("control capture (a raised diagnostics level only)", () => {
  const clicks = () => events().filter((e) => e.event === "ui.click");
  afterEach(() => {
    document.body.innerHTML = "";
  });

  it("records nothing at the base level", () => {
    document.body.innerHTML = `<button data-testid="feed-refresh">Refresh</button>`;
    document.querySelector("button")!.click();
    expect(clicks()).toEqual([]);
  });

  it("names a control by its test id, icon, app-copy label and state", () => {
    setLevel("DEBUG");
    window.history.replaceState({ sfPage: "feed" }, "");
    document.body.innerHTML = `
      <div data-testid="feed-toolbar">
        <button aria-pressed="true"><svg class="lucide lucide-refresh-cw"></svg> Frissítés </button>
      </div>`;
    document.querySelector("svg")!.dispatchEvent(new MouseEvent("click", { bubbles: true }));
    expect(clicks().map((e) => e.attrs)).toEqual([
      {
        tag: "button",
        within: "feed-toolbar",
        icon: "refresh-cw",
        label: "Refresh",
        pressed: "true",
        page: "feed",
      },
    ]);
  });

  it("never records what the user wrote: a title on a card, an input's value, a link's query", () => {
    setLevel("TRACE");
    document.body.innerHTML = `
      <button data-testid="video-card">My secret holiday video</button>
      <input type="text" value="typed private words" />
      <input type="checkbox" checked />
      <a href="/watch/Ab3xYz9Tok?token=zzz">Some video title</a>
      <a href="https://example.org/profile/someone">elsewhere</a>
      <div role="button" aria-label="Delete tag holiday2024">x</div>`;
    for (const el of document.querySelectorAll("button, input, a, [role=button]")) {
      el.addEventListener("click", (e) => e.preventDefault());
      (el as HTMLElement).click();
    }
    const text = JSON.stringify(clicks());
    for (const secret of [
      "holiday",
      "typed private",
      "Ab3xYz9Tok",
      "zzz",
      "Some video",
      "someone",
    ]) {
      expect(text).not.toContain(secret);
    }
    expect(clicks().map((e) => e.attrs)).toMatchObject([
      { control: "video-card" },
      { tag: "input", type: "text" },
      { tag: "input", type: "checkbox", checked: false }, // the state the click is turning it to
      { tag: "a", href: "/watch/{}" },
      { tag: "a", href: "external" },
      { tag: "div", role: "button" },
    ]);
  });
});