import { expect, test } from "@playwright/test";

test("loads from a deep path and keeps the last valid projection while source is invalid", async ({
  page,
}) => {
  const pageErrors: string[] = [];
  page.on("pageerror", (error) => pageErrors.push(error.message));

  await page.goto("/deep/nested/svg/");
  await expect(page).toHaveTitle("SVG Tools");
  await expect(
    page.getByText("Source synchronized", { exact: true }),
  ).toBeVisible();
  await expect(
    page.getByRole("tree", { name: "SVG element structure" }),
  ).toBeVisible();
  await expect(page.getByTitle("Sanitized SVG preview")).toHaveAttribute(
    "sandbox",
    "allow-scripts",
  );

  const treeItems = page.getByRole("treeitem");
  const initialTreeCount = await treeItems.count();
  expect(initialTreeCount).toBeGreaterThan(1);
  await page
    .frameLocator('iframe[title="Sanitized SVG preview"]')
    .locator("#sun")
    .click();
  await expect(page.locator('[data-node-key="id:sun"]')).toHaveAttribute(
    "aria-selected",
    "true",
  );

  const source = page.locator(".cm-content");
  await source.click();
  await page.keyboard.press("Control+A");
  // insertText bypasses CodeMirror's helpful XML close-tag completion so this
  // exercise really leaves the canonical source in an incomplete state.
  await page.keyboard.insertText('<svg xmlns="http://www.w3.org/2000/svg"><g>');
  await expect(page.getByText("Source invalid", { exact: true })).toBeVisible();
  await expect(
    page.getByText("Showing the last valid canvas revision."),
  ).toBeVisible();
  expect(await treeItems.count()).toBe(initialTreeCount);
  await expect(page.getByRole("treeitem").first()).toBeVisible();
  await expect(
    page.getByRole("button", { name: "Download SVG" }).last(),
  ).toBeDisabled();

  await source.click();
  await page.keyboard.press("Control+z");
  await expect(
    page.getByText("Source synchronized", { exact: true }),
  ).toBeVisible();
  expect(pageErrors).toEqual([]);
});

test("synchronizes tree selection, source patches, undo and redo", async ({
  page,
}) => {
  await page.goto("/deep/nested/svg/");
  await expect(
    page.getByText("Source synchronized", { exact: true }),
  ).toBeVisible();

  await page.getByPlaceholder("Filter elements…").fill("path");
  const pathRow = page.getByRole("treeitem").filter({ hasText: "path" }).last();
  await pathRow.click();
  await expect(pathRow).toHaveAttribute("aria-selected", "true");
  await page.getByRole("button", { name: "Element" }).click();

  const fill = page.getByLabel("Fill", { exact: true });
  await fill.fill("#123456");
  await fill.press("Enter");
  await expect(page.locator(".cm-content")).toContainText('fill="#123456"');

  await page.getByRole("button", { name: "Undo" }).click();
  await expect(page.locator(".cm-content")).not.toContainText('fill="#123456"');
  await page.getByRole("button", { name: "Redo" }).click();
  await expect(page.locator(".cm-content")).toContainText('fill="#123456"');
});

test("duplicates and deletes ID-free nodes while protecting referenced IDs", async ({
  page,
}) => {
  await page.goto("/deep/nested/svg/");
  await page.getByPlaceholder("Filter elements…").fill("stop");
  await page.getByRole("treeitem").filter({ hasText: "stop" }).first().click();
  await page.getByRole("button", { name: "Element" }).click();
  await page.getByRole("button", { name: "Duplicate element" }).click();
  await expect(page.locator(".cm-content")).toContainText(
    /stop-color="#725cff"[\s\S]*stop-color="#725cff"/u,
  );
  await page.getByRole("button", { name: "Delete element" }).click();
  await expect(page.locator(".cm-content")).not.toContainText(
    /stop-color="#725cff"[\s\S]*stop-color="#725cff"/u,
  );

  await page.getByPlaceholder("Filter elements…").fill("sun");
  await page.getByRole("treeitem").filter({ hasText: "sun" }).click();
  await page.getByRole("button", { name: "Duplicate element" }).click();
  await expect(page.locator(".workbench-footer")).toContainText(
    /Duplicate is refused/u,
  );
});

test("connects to a valid same-origin Toolbox catalogue from the nested build", async ({
  page,
}) => {
  await page.goto("/deep/nested/svg/?toolbox=%2Ftoolbox.catalog.json");
  await expect(
    page.getByText("Source synchronized", { exact: true }),
  ).toBeVisible();
  await expect(page.locator(".toolbox-shell")).toHaveAttribute(
    "data-toolbox-context",
    "connected",
  );
  await page.getByRole("button", { name: "Apps" }).click();
  const switcher = page.getByRole("navigation", {
    name: "Toolbox applications",
  });
  await expect(switcher).toBeVisible();
  await expect(
    switcher.getByRole("link", { name: "SVG Tools" }),
  ).toHaveAttribute("aria-current", "page");
});

test("opens hostile SVG locally without executing scripts or fetching external URLs", async ({
  page,
}) => {
  const forbiddenRequests: string[] = [];
  let executed = false;
  page.on("request", (request) => {
    if (request.url().includes("invalid.example"))
      forbiddenRequests.push(request.url());
  });
  await page.exposeFunction("svgToolsExecuted", () => {
    executed = true;
  });
  await page.goto("/deep/nested/svg/");

  const hostile = `
    <!DOCTYPE svg SYSTEM "https://invalid.example/tracker.dtd">
    <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 20 20">
      <script>parent.svgToolsExecuted()</script>
      <image href="https://invalid.example/tracker.png" width="20" height="20"/>
      <rect width="20" height="20" onclick="parent.svgToolsExecuted()"/>
    </svg>`;
  await page.locator('input[type="file"]').evaluate((element, contents) => {
    const transfer = new DataTransfer();
    transfer.items.add(
      new File([contents], "hostile.svg", { type: "image/svg+xml" }),
    );
    (element as HTMLInputElement).files = transfer.files;
    element.dispatchEvent(new Event("change", { bubbles: true }));
  }, hostile);
  await expect(
    page.getByText("Source synchronized", { exact: true }),
  ).toBeVisible();
  await expect(
    page.getByText(/blocked-script|event-handler|unsafe-url/).first(),
  ).toBeVisible();

  const frame = page.frameLocator('iframe[title="Sanitized SVG preview"]');
  await expect(frame.locator("script")).toHaveCount(0);
  await expect(frame.locator("image")).not.toHaveAttribute(
    "href",
    /invalid\.example/u,
  );
  expect(executed).toBe(false);
  expect(forbiddenRequests).toEqual([]);
});