import AxeBuilder from "@axe-core/playwright";
import { expect, test } from "@playwright/test";
import { authenticatedStatePath } from "../global-setup";
import { expectAuthenticatedShell } from "./support/v2";

/**
 * V2-M6: visualizations, motion, matrices and dashboard.
 *
 * `ServerMap`/`ServiceTopology`/`ProjectSignature` and `DataTable` were already
 * implemented from the prior Codex session (see docs/v2/V2_ROADMAP.md's V2-M6
 * entry). This spec adds the missing real proofs for this milestone's specific
 * acceptance criteria: reduced-motion renders a *genuine final state* (not just
 * "axe is clean", which src/visualizations/*.test.tsx and the pre-existing
 * v2-routing-and-fidelity.spec.ts reduced-motion test already cover at the
 * component/axe level), a real matrix route has no page-level horizontal overflow,
 * and dashboard widget order/visibility actually round-trips through Settings → a
 * real reload of the dashboard route (not just localStorage keys, already proven at
 * the unit level in PreferencesContext.test.tsx).
 */

test.use({ storageState: authenticatedStatePath });

test.describe("V2-M6 motion, matrices and dashboard personalization", () => {
  test("the server map renders its final, fully-opaque state under prefers-reduced-motion, not a mid-animation frame", async ({ page }) => {
    await page.emulateMedia({ reducedMotion: "reduce" });
    await page.goto("/");
    await expect(page.getByRole("heading", { name: "Operationeel overzicht" })).toBeVisible();

    const serverMap = page.locator(".server-map");
    await expect(serverMap).toBeVisible();
    const opacities = await serverMap.locator("svg > g, svg > path").evaluateAll((elements) =>
      elements.map((element) => window.getComputedStyle(element).opacity)
    );
    expect(opacities.length).toBeGreaterThan(0);
    for (const opacity of opacities) {
      expect(Number(opacity)).toBeCloseTo(1, 2);
    }
  });

  test("a project's signature illustration renders its final, fully-opaque state under prefers-reduced-motion", async ({ page }) => {
    await page.emulateMedia({ reducedMotion: "reduce" });
    const projectName = `E2E-motion-project ${Date.now()}`;
    await page.goto("/projects");
    await expectAuthenticatedShell(page);
    await page.getByRole("button", { name: "Nieuw project" }).click();
    await page.getByLabel("Naam").fill(projectName);
    await page.getByRole("button", { name: "Project aanmaken" }).click();
    await expect(page.getByRole("heading", { name: projectName })).toBeVisible();

    const signature = page.locator(".project-signature");
    // Below 900px the decorative signature is deliberately not rendered at all (OUX-6:
    // operational data comes before decoration on a narrow screen), so there is no
    // final animation state to assert there. Asserting it visible on every viewport
    // would be asserting the opposite of the product decision.
    const viewport = page.viewportSize();
    test.skip(
      (viewport?.width ?? 0) < 900,
      "The project signature is intentionally hidden below 900px; nothing animates there.",
    );
    await expect(signature).toBeVisible();
    // Only the ".project-core" diamond marker animates opacity (0 → 1 via `animate`);
    // the decorative rings around it use a permanent, layered per-ring `opacity`
    // *attribute* (e.g. 0.72, 0.64, ...) as a static design choice, not an
    // animate-in artifact — asserting rings end at opacity 1 would be a real, wrong
    // assumption about this component (confirmed by reading ProjectSignature.tsx,
    // not guessed after a confusing first failure).
    const coreOpacity = await signature.locator("svg .project-core").evaluate(
      (element) => window.getComputedStyle(element).opacity
    );
    expect(Number(coreOpacity)).toBeCloseTo(1, 2);

    const accessibility = await new AxeBuilder({ page }).analyze();
    expect(accessibility.violations).toEqual([]);
  });

  test("the storage matrix causes no page-level horizontal overflow at a realistic viewport", async ({ page }) => {
    await page.setViewportSize({ width: 1280, height: 900 });
    await page.goto("/infrastructure/storage");
    await expect(page.getByRole("heading", { name: "Opslag en capaciteit" })).toBeVisible();
    const overflow = await page.evaluate(
      () => document.documentElement.scrollWidth - document.documentElement.clientWidth
    );
    expect(overflow).toBeLessThanOrEqual(1);

    const accessibility = await new AxeBuilder({ page }).analyze();
    expect(accessibility.violations).toEqual([]);
  });

  test("hiding and reordering a dashboard widget in Settings actually changes the real dashboard, and survives a reload", async ({ page }) => {
    await page.goto("/settings");
    await expectAuthenticatedShell(page);
    await expect(page.getByRole("heading", { name: "Dashboardwidgets" })).toBeVisible();
    await expect(page.locator(".preference-sync-status")).toContainText("Voorkeuren gesynchroniseerd.");
    await page.getByRole("button", { name: "Widgets herstellen" }).click();
    await expect.poll(async () => {
      const values = await (await page.request.get("/api/v1/me/preferences")).json();
      return [values.dashboardWidgetOrder[0], values.hiddenDashboardWidgets.length];
    }).toEqual(["attention", 0]);

    // Hide the "Projecten" widget entirely.
    await page.getByRole("checkbox", { name: "Projecten tonen" }).uncheck();
    // "Operationele signalen" is the default first widget since OUX-4 (critical
    // signals before the topology illustration), so its "up" control is correctly
    // disabled. Reorder in the direction that is actually available: move
    // "Unraid-overzicht" above it.
    await expect(page.getByRole("button", { name: "Operationele signalen omhoog" })).toBeDisabled();
    await page.getByRole("button", { name: "Unraid-overzicht omhoog" }).click();

    // A full page navigation must wait for the server save, as indicated by the
    // settings UI, instead of interrupting the pending preference request.
    await expect.poll(async () => {
      const values = await (await page.request.get("/api/v1/me/preferences")).json();
      return [values.dashboardWidgetOrder[0], values.hiddenDashboardWidgets.includes("projects")];
    }).toEqual(["server", true]);

    await page.goto("/");
    await expect(page.getByRole("heading", { name: "Operationeel overzicht" })).toBeVisible();
    await expect(page.getByRole("heading", { name: "Projecten", exact: true })).toHaveCount(0);
    const headingOrder = await page.getByRole("main").getByRole("heading", { level: 2 }).allTextContents();
    expect(headingOrder.indexOf("Unraid-overzicht")).toBeLessThan(headingOrder.indexOf("Operationele signalen"));

    // Reload the dashboard directly (not a fresh in-app navigation) to prove this is
    // real persisted state, not just in-memory React state surviving a client route
    // change.
    await page.reload();
    await expect(page.getByRole("heading", { name: "Operationeel overzicht" })).toBeVisible();
    await expect(page.getByRole("heading", { name: "Projecten", exact: true })).toHaveCount(0);
    const headingOrderAfterReload = await page.getByRole("main").getByRole("heading", { level: 2 }).allTextContents();
    expect(headingOrderAfterReload.indexOf("Unraid-overzicht")).toBeLessThan(
      headingOrderAfterReload.indexOf("Operationele signalen")
    );

    // Restore the default so this test does not leak state into any other test that
    // shares the same authenticated storage state / owner account.
    await page.goto("/settings");
    await expect(page.locator(".preference-sync-status")).toContainText("Voorkeuren gesynchroniseerd.");
    await page.getByRole("button", { name: "Widgets herstellen" }).click();
    await expect.poll(async () => {
      const values = await (await page.request.get("/api/v1/me/preferences")).json();
      return [values.dashboardWidgetOrder[0], values.hiddenDashboardWidgets.length];
    }).toEqual(["attention", 0]);
  });
});