/* Chapters — folders inside a notebook.
 *
 * The claim the feature rests on is the one under test: a note filed into a
 * chapter is *in* it and not also loose in the notebook, and removing a chapter
 * never removes what it held. Both look fine on screen while being wrong on the
 * server, so the server is asked directly.
 */
import {
  api,
  check,
  createNote,
  createNotebook,
  launch,
  report,
  setTitle,
  withFreshUser,
} from "./lib.mjs";

const browser = await launch();
let session;
try {
  session = await withFreshUser(browser, "chapters");
  const p = session.page;

  const titles = () =>
    p.locator("[data-note-row] [data-note-title]").evaluateAll((els) => els.map((e) => e.textContent.trim()));
  const addChapter = async (name) => {
    await p.locator("[data-add-chapter]").click();
    await p.waitForTimeout(600);
    await p.getByLabel("Chapter name").fill(name);
    await p.getByRole("button", { name: "Create", exact: true }).click();
    await p.waitForTimeout(2000);
  };
  const moveTo = async (noteTitle, target) => {
    await p.locator("[data-note-row]").filter({ hasText: noteTitle }).first().click({ button: "right", force: true });
    await p.waitForTimeout(600);
    await p.locator("[data-submenu-toggle]").first().click();
    await p.waitForTimeout(500);
    await p.locator("[data-submenu] button").filter({ hasText: target }).first().click();
    await p.waitForTimeout(2500);
  };

  await createNotebook(p, "Haus");
  await p.locator("button").filter({ hasText: "Haus" }).first().click();
  await p.waitForTimeout(700);
  for (const name of ["Zählerstand", "Stromrechnung"]) {
    await createNote(p);
    await setTitle(p, name);
    await p.waitForTimeout(600);
  }
  await p.waitForTimeout(1000);

  /* ── making one ── */
  check((await p.locator("[data-add-chapter]").count()) === 1, "a notebook can be given a chapter");
  await addChapter("Rechnungen");
  check((await p.locator("[data-chapter-row]").count()) === 1, "and it appears in the list");

  const server = (await api(p, "GET", "/chapters")).body;
  check(server.length === 1 && server[0].name === "Rechnungen", "the server has it", JSON.stringify(server));

  /* ── filing a note ── */
  await moveTo("Stromrechnung", "Rechnungen");
  check(
    (await titles()).join(",") === "Zählerstand",
    "a note filed into a chapter leaves the notebook's own list",
    (await titles()).join(", ")
  );

  await p.locator("[data-chapter-row]").first().click();
  await p.waitForTimeout(1200);
  check((await titles()).join(",") === "Stromrechnung", "and is inside the chapter", (await titles()).join(", "));
  check((await p.locator("[data-chapter-back]").count()) === 1, "with a way back out");

  const filed = (await api(p, "GET", "/notes")).body.find((n) => n.title === "Stromrechnung");
  check(!!filed?.chapter_id, "the server filed it too", String(filed?.chapter_id));

  /* A note made inside a chapter belongs to it, without being moved. */
  await createNote(p);
  await setTitle(p, "Wasserrechnung");
  await p.waitForTimeout(1500);
  const made = (await api(p, "GET", "/notes")).body.find((n) => n.title === "Wasserrechnung");
  check(made?.chapter_id === filed?.chapter_id, "a note made inside a chapter is filed there", String(made?.chapter_id));

  await p.locator("[data-chapter-back]").click();
  await p.waitForTimeout(1200);
  check(
    (await titles()).join(",") === "Zählerstand",
    "and going back shows the notebook again, without the chapter's notes",
    (await titles()).join(", ")
  );

  /* ── a chapter is not a wastebasket ──
   * Removing one must never remove what it held: the notes come back to the
   * notebook, where they can be seen and filed again. */
  await p.locator("[data-chapter-row]").first().click({ button: "right", force: true });
  await p.waitForTimeout(600);
  await p.getByText("Remove chapter", { exact: true }).click();
  await p.waitForTimeout(700);
  check(/stay/i.test(await p.locator("body").innerText()), "removing one says out loud that the notes stay");
  await p.getByRole("button", { name: "Remove", exact: true }).click();
  await p.waitForTimeout(2500);

  check((await p.locator("[data-chapter-row]").count()) === 0, "the chapter is gone");
  const after = (await titles()).sort().join(",");
  check(
    after === "Stromrechnung,Wasserrechnung,Zählerstand",
    "and every note it held is back in the notebook",
    after
  );
  const freed = (await api(p, "GET", "/notes")).body;
  check(
    freed.every((n) => !n.chapter_id),
    "with nothing on the server still pointing at a chapter that is gone",
    JSON.stringify(freed.map((n) => [n.title, n.chapter_id]))
  );
} catch (e) {
  check(false, "suite ran to the end", e.message);
} finally {
  await session?.cleanup();
  const code = report();
  await browser.close();
  process.exit(code);
}