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

// Targeted end-to-end coverage for the Fleet Ops correction brief (docs/fleet-ops-
// correction/): branding, the redesigned status-recommendation flow (preview/apply/
// manual-review/stale-token), MO-016 order independence, trilingual knowledge
// grounding, and localized audit/automation content. See also i18n-coverage.spec.ts
// (key parity, brand invariant, translation-quality) and responsive-i18n.spec.ts
// (breakpoint matrix) for the complementary static-content checks.

async function resetDemoData(request: APIRequestContext) {
  const login = await request.post("/api/v1/demo/login", { data: { role: "operations_manager" } });
  expect(login.ok()).toBeTruthy();
  const reset = await request.post("/api/v1/demo/reset");
  expect(reset.ok()).toBeTruthy();
  // /api/v1/demo/reset deletes the session cookie (it recreates the users table), so any
  // further authenticated call through this same request context needs a fresh login.
  const relogin = await request.post("/api/v1/demo/login", { data: { role: "operations_manager" } });
  expect(relogin.ok()).toBeTruthy();
}

const EXPLORE_OPS_MANAGER: Record<string, string> = {
  "nl-BE": "Verken als Operations Manager",
  "en-GB": "Explore as Operations Manager",
  "fr-BE": "Explorer en tant qu'Operations Manager",
};

const REVIEW_RECOMMENDATION: Record<string, string> = {
  "nl-BE": "Aanbeveling bekijken",
  "en-GB": "Review recommendation",
  "fr-BE": "Voir la recommandation",
};

const CHANGE_STATUS_PREFIX: Record<string, RegExp> = {
  "nl-BE": /^Status wijzigen naar/,
  "en-GB": /^Change status to/,
  "fr-BE": /^Changer le statut vers/,
};

const MANUAL_REVIEW_HEADING: Record<string, string> = {
  "nl-BE": "Handmatige beoordeling vereist",
  "en-GB": "Manual review required",
  "fr-BE": "Évaluation manuelle requise",
};

async function loginAsOpsManager(page: Page, lang: string) {
  await page.addInitScript((l) => localStorage.setItem("fleetops.language", l), lang);
  await page.goto("/login");
  await page.getByRole("button", { name: EXPLORE_OPS_MANAGER[lang] }).click();
  await expect(page).toHaveURL(/\/dashboard$/);
}

test.describe.configure({ mode: "serial" });

test.describe("branding", () => {
  for (const lang of ["nl-BE", "en-GB", "fr-BE"]) {
    test(`Fleet Ops is the visible brand and no MobilityOps/PoC leaks through (${lang})`, async ({
      page,
      request,
    }) => {
      await resetDemoData(request);
      await loginAsOpsManager(page, lang);
      await expect(page.locator(".brand-mark").first()).toBeVisible();
      await expect(page.getByText("Fleet Ops", { exact: true }).first()).toBeVisible();
      await expect(page.locator(".app-footer")).toContainText("Fleet Ops");
      await expect(page.locator("html")).toHaveAttribute("lang", lang);

      for (const path of ["/dashboard", "/vehicles", "/data-quality", "/audit", "/automation", "/knowledge"]) {
        await page.goto(path);
        const text = await page.locator("body").innerText();
        expect(text, `${path} (${lang})`).not.toContain("MobilityOps");
        expect(text, `${path} (${lang})`).not.toMatch(/\bPoC\b/);
      }
    });
  }
});

test("language switcher control changes the UI and persists across a reload", async ({ page, request }) => {
  await resetDemoData(request);
  // Deliberately not using loginAsOpsManager here: its addInitScript would re-force
  // nl-BE on every reload, defeating exactly the persistence behaviour under test.
  await page.goto("/login");
  await page.getByRole("button", { name: EXPLORE_OPS_MANAGER["nl-BE"] }).click();
  await expect(page).toHaveURL(/\/dashboard$/);
  await expect(page.getByRole("heading", { name: "Aandachtspunten" })).toBeVisible();

  await page.getByRole("combobox", { name: "Taal" }).selectOption("fr-BE");
  await expect(page.getByRole("heading", { name: "File d'attention" })).toBeVisible();
  await expect(page.locator("html")).toHaveAttribute("lang", "fr-BE");

  await page.reload();
  await expect(page.getByRole("heading", { name: "File d'attention" })).toBeVisible();
  await expect(page.locator("html")).toHaveAttribute("lang", "fr-BE");
});

test.describe("status-recommendation flow", () => {
  test("preview does not mutate anything, apply names the exact target status", async ({ page, request }) => {
    await resetDemoData(request);
    await loginAsOpsManager(page, "nl-BE");
    await page.goto("/data-quality/DQ-DEMO-STATUS");
    await expect(page.getByRole("heading", { name: "DQ-DEMO-STATUS" })).toBeVisible();

    await page.getByRole("button", { name: REVIEW_RECOMMENDATION["nl-BE"] }).click();
    await expect(page.getByText("Aanbevolen status")).toBeVisible();
    await expect(page.getByRole("heading", { name: "Waarom" })).toBeVisible();
    await expect(page.getByRole("heading", { name: "Gevolg" })).toBeVisible();

    // Previewing must not have resolved the issue -- still open, using the page's own
    // authenticated session (page.request shares cookies with the browser context).
    const issue = await page.request.get("/api/v1/data-quality/issues/DQ-DEMO-STATUS");
    expect((await issue.json()).status).toBe("open");

    const confirmButton = page.getByRole("button", { name: CHANGE_STATUS_PREFIX["nl-BE"] });
    await expect(confirmButton).toHaveText(/Geblokkeerd/);
    await confirmButton.click();
    await expect(page.getByText("Toegepast", { exact: false })).toBeVisible();

    const resolved = await page.request.get("/api/v1/data-quality/issues/DQ-DEMO-STATUS");
    expect((await resolved.json()).status).toBe("resolved");
  });

  test("manual review state offers no generic apply button for a genuine fact contradiction", async ({
    page,
    request,
  }) => {
    await resetDemoData(request);
    const issues = await (
      await request.get("/api/v1/data-quality/issues", {
        params: { rule_type: "vehicle_status_conflict", status: "open" },
      })
    ).json();
    const conflicted = issues.find((i: { entity_ref: string }) => i.entity_ref === "MO-024");
    expect(conflicted, "expected MO-024's vehicle_status_conflict issue to exist after reset").toBeTruthy();

    await loginAsOpsManager(page, "en-GB");
    await page.goto(`/data-quality/${conflicted.public_ref}`);
    await page.getByRole("button", { name: REVIEW_RECOMMENDATION["en-GB"] }).click();

    await expect(page.getByRole("heading", { name: MANUAL_REVIEW_HEADING["en-GB"] })).toBeVisible();
    await expect(page.getByRole("button", { name: /^Change status to/ })).toHaveCount(0);
  });

  test("a stale recommendation is rejected and the user must review again before applying", async ({
    page,
    request,
  }) => {
    await resetDemoData(request);
    await loginAsOpsManager(page, "en-GB");
    await page.goto("/data-quality/DQ-DEMO-STATUS");
    await page.getByRole("button", { name: REVIEW_RECOMMENDATION["en-GB"] }).click();
    await expect(page.getByRole("button", { name: /^Change status to/ })).toBeVisible();

    // Simulate the underlying facts changing after the preview was shown (the same
    // session resolves the booking overlap in the meantime) -- the previously-fetched
    // recommendation token must no longer be accepted.
    await page.evaluate(async () => {
      await fetch("/api/v1/data-quality/issues/DQ-DEMO-OVERLAP/resolve-overlap", {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify({ booking_ref: "BK-DEMO-OVERLAP-B" }),
      });
    });

    await page.getByRole("button", { name: /^Change status to/ }).click();
    await expect(page.getByText(/situation has changed/i)).toBeVisible();
    await expect(page.getByRole("button", { name: REVIEW_RECOMMENDATION["en-GB"] })).toBeVisible();
  });
});

test.describe("MO-016 status conflict is order-independent", () => {
  // Order independence does NOT mean "the same final vehicle status regardless of
  // order" -- resolving the booking overlap first genuinely removes the conflict, so
  // there is correctly nothing left to apply afterwards. What must hold in either
  // order: the recommendation always reflects the real, current facts (never a stale
  // "was some other issue open" proxy), and nothing unsafe is ever applied (never
  // "rented").

  test("resolving the booking overlap first correctly leaves nothing to apply", async ({ page, request }) => {
    await resetDemoData(request);
    await loginAsOpsManager(page, "nl-BE");
    await page.goto("/data-quality/DQ-DEMO-OVERLAP");
    await page.getByRole("radio", { name: /BK-DEMO-OVERLAP-B blokkeren/ }).check();
    await page.getByRole("button", { name: /BK-DEMO-OVERLAP-B blokkeren/ }).click();
    await expect(page.getByText("Opgelost").first()).toBeVisible();

    await page.goto("/data-quality/DQ-DEMO-STATUS");
    await page.getByRole("button", { name: REVIEW_RECOMMENDATION["nl-BE"] }).click();
    await expect(page.getByRole("heading", { name: "Geen wijziging nodig" })).toBeVisible();
    await expect(page.getByRole("button", { name: CHANGE_STATUS_PREFIX["nl-BE"] })).toHaveCount(0);

    const vehicle = await request.get("/api/v1/vehicles/MO-016");
    expect((await vehicle.json()).operational_status).toBe("available");
  });

  test("resolving the status conflict first safely blocks the vehicle, unaffected by the later overlap fix", async ({
    page,
    request,
  }) => {
    await resetDemoData(request);
    await loginAsOpsManager(page, "nl-BE");
    await page.goto("/data-quality/DQ-DEMO-STATUS");
    await page.getByRole("button", { name: REVIEW_RECOMMENDATION["nl-BE"] }).click();
    await page.getByRole("button", { name: CHANGE_STATUS_PREFIX["nl-BE"] }).click();
    await expect(page.getByText("Toegepast", { exact: false })).toBeVisible();

    const vehicleMid = await request.get("/api/v1/vehicles/MO-016");
    const statusAfterApply = (await vehicleMid.json()).operational_status;
    expect(statusAfterApply).not.toBe("rented");

    await page.goto("/data-quality/DQ-DEMO-OVERLAP");
    await page.getByRole("radio", { name: /BK-DEMO-OVERLAP-B blokkeren/ }).check();
    await page.getByRole("button", { name: /BK-DEMO-OVERLAP-B blokkeren/ }).click();
    await expect(page.getByText("Opgelost").first()).toBeVisible();

    // Resolving the now-redundant overlap afterwards must not itself change the
    // vehicle's status as a side effect.
    const vehicleFinal = await request.get("/api/v1/vehicles/MO-016");
    const statusFinal = (await vehicleFinal.json()).operational_status;
    expect(statusFinal).toBe(statusAfterApply);
    expect(statusFinal).not.toBe("rented");

    await resetDemoData(request);
  });
});

test.describe("knowledge base is grounded in the operator's own language", () => {
  const cases: { lang: string; question: string; sourceHint: RegExp }[] = [
    {
      lang: "nl-BE",
      question: "Wat moet ik doen wanneer een voertuig beschadigd terugkomt?",
      sourceHint: /schadeafhandeling/i,
    },
    {
      lang: "en-GB",
      question: "What should I do when a vehicle returns with damage?",
      sourceHint: /damage/i,
    },
    {
      lang: "fr-BE",
      question: "Que dois-je faire lorsqu'un véhicule revient endommagé ?",
      sourceHint: /dommages/i,
    },
  ];

  for (const { lang, question, sourceHint } of cases) {
    test(`grounded ${lang} answer cites a ${lang} source about damage`, async ({ page, request }) => {
      await resetDemoData(request);
      await loginAsOpsManager(page, lang);
      await page.goto("/knowledge");
      await page.locator("#knowledge-question").fill(question);
      await page.getByRole("button", { name: /^(Vraag stellen|Ask|Demander)$/ }).click();
      await expect(page.getByText(sourceHint).first()).toBeVisible({ timeout: 10_000 });
    });
  }
});

test("audit trail shows localized action and field labels with raw codes only in technical details", async ({
  page,
  request,
}) => {
  await resetDemoData(request);
  await loginAsOpsManager(page, "nl-BE");
  await page.goto("/data-quality/DQ-DEMO-STATUS");
  await page.getByRole("button", { name: REVIEW_RECOMMENDATION["nl-BE"] }).click();
  await page.getByRole("button", { name: CHANGE_STATUS_PREFIX["nl-BE"] }).click();
  await expect(page.getByText("Toegepast", { exact: false })).toBeVisible();

  await page.goto("/audit");

  // Applying resolves both the vehicle status and the issue in one correlated action --
  // expand the group's "technical events" toggle so the other audit row's diff renders
  // too, regardless of which one the grouping picked as primary.
  const toggle = page.getByRole("button", { name: /technische gebeurtenis/ }).first();
  await expect(toggle).toBeVisible();
  await toggle.click();
  await expect(page.getByRole("button", { name: "Technische gebeurtenissen verbergen" })).toBeVisible();

  await expect(page.getByText("Aanbevolen status toegepast").first()).toBeVisible();
  const diffs = page.locator(".change-diff");
  await expect(diffs.first()).toBeVisible();
  const combinedDiffText = (await diffs.allInnerTexts()).join(" ");
  expect(combinedDiffText).toContain("Operationele status");
  expect(combinedDiffText).not.toContain("operational_status");
});

test("automation shows a localized error explanation with the raw error only under technical details", async ({
  page,
  request,
}) => {
  await resetDemoData(request);
  await loginAsOpsManager(page, "nl-BE");
  await page.goto("/automation");

  await expect(page.getByText(/tijdelijk niet bereikbaar/).first()).toBeVisible();
  await expect(page.getByText("Synthetic connection timeout to n8n")).not.toBeVisible();
  await page.getByText("Technische details").first().click();
  await expect(page.getByText("Synthetic connection timeout to n8n")).toBeVisible();
});