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

const API_BASE = process.env.MOBILITYOPS_API_URL ?? "http://localhost:8128";

async function resetDemoData(request: APIRequestContext) {
  const login = await request.post(`${API_BASE}/api/v1/demo/login`, {
    data: { role: "operations_manager" },
  });
  expect(login.ok()).toBeTruthy();
  const reset = await request.post(`${API_BASE}/api/v1/demo/reset`);
  expect(reset.ok()).toBeTruthy();
}

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

test("five-minute demo script end to end", async ({ page, request }) => {
  // Reset via a throwaway API session so the UI test starts from the deterministic seed
  // regardless of what earlier test runs mutated (S1 return, S2 merge, etc.).
  await resetDemoData(request);

  await test.step("1. login as Operations Manager", async () => {
    await page.goto("/login");
    await expect(page.getByText(/Synthetic proof of concept/)).toBeVisible();
    await page.getByRole("button", { name: "Open as Operations Manager" }).click();
    await expect(page).toHaveURL(/\/dashboard$/);
  });

  await test.step("2. verify dashboard metrics are loaded", async () => {
    await expect(page.getByRole("heading", { name: "Fleet readiness" })).toBeVisible();
    const metricValues = page.locator(".metric-cell dd");
    await expect(metricValues.first()).toBeVisible();
    const values = await metricValues.allTextContents();
    expect(values.length).toBeGreaterThan(0);
    expect(values.some((v) => Number(v) > 0)).toBeTruthy();
  });

  await test.step("3. open active demo booking", async () => {
    await page.goto("/bookings/BK-DEMO-RETURN");
    await expect(page.getByRole("heading", { name: "BK-DEMO-RETURN" })).toBeVisible();
    await expect(page.getByText("active", { exact: true })).toBeVisible();
  });

  await test.step("4. register an odometer-regression return (S1)", async () => {
    const vehicleOdometerText = await page
      .locator(".detail-grid div", { hasText: "Start odometer" })
      .locator("dd")
      .textContent();
    const startOdometer = parseInt((vehicleOdometerText ?? "0").replace(/\D/g, ""), 10);
    const lowReading = Math.max(0, startOdometer - 500);

    await page.getByLabel("End odometer (km)").fill(String(lowReading));
    await page.getByLabel("Fuel level (%)").fill("55");
    await page.getByRole("button", { name: "Review return" }).click();
    await expect(page.getByRole("heading", { name: "Review return impact" })).toBeVisible();
    await page.getByRole("button", { name: "Confirm return" }).click();

    await expect(page.getByRole("heading", { name: "Return registered" })).toBeVisible();
  });

  await test.step("5. verify quality issue and queued automation event", async () => {
    await expect(page.getByText(/DQ-RET-|None created/)).toBeVisible();
    await expect(page.getByText(/Queued \(/)).toBeVisible();
  });

  await test.step("6. resolve the duplicate customer scenario (S2)", async () => {
    await page.goto("/data-quality/DQ-DEMO-DUPLICATE");
    await expect(page.getByRole("heading", { name: "Compare and merge" })).toBeVisible();
    await page.getByRole("button", { name: /Merge into CUS-0012/ }).click();
    await page.getByRole("button", { name: "Yes, merge" }).click();
    await expect(page.getByText("resolved", { exact: true })).toBeVisible();
  });

  await test.step("7. ask the damage question and inspect citations (S6)", async () => {
    await page.goto("/knowledge");
    await page
      .getByPlaceholder(/What must I do when a vehicle returns with damage/)
      .fill("What must I do when a vehicle returns with damage?");
    await page.getByRole("button", { name: "Ask" }).click();
    await expect(page.getByText("Grounded in cited procedures")).toBeVisible();
    await expect(page.getByText("Damage handling procedure").first()).toBeVisible();
    await expect(page.getByText("Vehicle return procedure").first()).toBeVisible();
  });

  await test.step("8. inspect audit entries", async () => {
    await page.goto("/audit");
    await page.getByLabel("Action").fill("return_registered");
    await expect(page.locator(".data-table tbody tr").first()).toBeVisible();
    await expect(page.getByText("return registered").first()).toBeVisible();
  });

  await test.step("9. verify responsive navigation at mobile width", async () => {
    await page.setViewportSize({ width: 360, height: 800 });
    await page.goto("/dashboard");
    await expect(page.getByText(/Synthetic demo data/).first()).toBeVisible();
    await expect(page.getByRole("link", { name: "Overview" }).first()).toBeVisible();
    const scrollWidth = await page.evaluate(() => document.documentElement.scrollWidth);
    const clientWidth = await page.evaluate(() => document.documentElement.clientWidth);
    expect(scrollWidth).toBeLessThanOrEqual(clientWidth + 1);
  });
});