import { expect, test } from "./setup/test";

import { STORAGE_STATE_PATH } from "./setup/global-setup";
import {
  expectNoHorizontalOverflow,
  PHONE_WIDTHS,
  settleForOverflowMeasurement,
} from "./utils/horizontal-overflow";

/**
 * Mobile smoke for the cycle vertical (v1.15.10). Asserts:
 *
 *   1. `/cycle` has no horizontal page scroll at any phone width — covers
 *      the tab-strip-overflow fix (the four long German labels used to force
 *      a horizontal scroll at 375 px) and the responsive cycle ring.
 *   2. The cycle-calendar day cells clear the WCAG 2.5.5 mobile tap-target
 *      height floor (44 CSS px) — the `min-h-10` → `min-h-11` bump.
 *
 * The `/insights` width case that used to live here has moved to
 * `mobile-horizontal-overflow.spec.ts`. It asserted against an EMPTY insights
 * payload and against `documentElement.scrollWidth`, so it was green through a
 * populated page that really did pan sideways inside the `AuthShell` `<main>`
 * scroll container. The replacement runs populated fixtures at several phone
 * widths and measures the scroll container the app actually uses. The cycle
 * fixture below is populated for the same reason.
 *
 * The cycle feature gate is enabled by rewriting the real `/api/auth/me`
 * response with `cycleTrackingEnabled: true` (every other field stays
 * authentic), and the `/api/cycle/*` reads are mocked so the wheel, tab strip,
 * and calendar render deterministically without seeding cycle data.
 *
 * Runs only on the `chromium-mobile` project (Pixel 5). The desktop project
 * skips this whole describe block.
 */

function ymd(d: Date): string {
  return `${d.getFullYear()}-${String(d.getMonth() + 1).padStart(2, "0")}-${String(d.getDate()).padStart(2, "0")}`;
}

/** The labelled run the fixture paints: 5 menstrual, 6 follicular, 1 ovulatory,
 *  then luteal through today and one day past it. */
const RUN_START_OFFSET = -12;
const PHASE_PLAN: string[] = [
  ...Array<string>(5).fill("MENSTRUAL"),
  ...Array<string>(6).fill("FOLLICULAR"),
  "OVULATORY",
  "LUTEAL",
  "LUTEAL",
];

function runStart(): Date {
  const start = new Date();
  start.setDate(start.getDate() + RUN_START_OFFSET);
  return start;
}

/** A 90-day-back → 180-day-forward calendar with a recent labelled cycle run
 *  so the wheel has a phase + day to show and the calendar paints cells. */
function buildCalendarDays(): Array<Record<string, unknown>> {
  const days: Array<Record<string, unknown>> = [];
  const start = runStart();
  const plan = PHASE_PLAN;
  for (let i = 0; i < plan.length; i++) {
    const d = new Date(start);
    d.setDate(start.getDate() + i);
    days.push({
      date: ymd(d),
      phase: plan[i],
      isPredictedPeriod: false,
      isFertileWindow: plan[i] === "OVULATORY",
      isPredictedOvulation: false,
      isPeriodLogged: plan[i] === "MENSTRUAL",
      flow: plan[i] === "MENSTRUAL" ? "MEDIUM" : null,
      hasSymptoms: false,
      confidence: 1,
      basalBodyTempC: null,
      ovulationTest: null,
      cervicalMucus: null,
    });
  }
  return days;
}

/**
 * The verdict the server resolves for that grid. The real route publishes this
 * and the wheel renders it, so a fixture that omitted it would paint an empty
 * ring — deriving it here from the SAME plan keeps the two from drifting.
 */
function buildVerdict(): Record<string, unknown> {
  const plan = PHASE_PLAN;
  const counts = plan.reduce<Record<string, number>>((acc, phase) => {
    acc[phase] = (acc[phase] ?? 0) + 1;
    return acc;
  }, {});
  const order = ["MENSTRUAL", "FOLLICULAR", "OVULATORY", "LUTEAL"];
  return {
    state: "IN_CYCLE",
    // The run starts 12 days back, so today is its 13th day.
    dayOfCycle: 1 - RUN_START_OFFSET,
    cycleLength: plan.length,
    phase: plan[-RUN_START_OFFSET],
    spans: order
      .filter((phase) => (counts[phase] ?? 0) > 0)
      .map((phase) => ({ phase, fraction: counts[phase] / plan.length })),
    cycleStartDate: ymd(runStart()),
    overdueDays: null,
    daysUntilNext: null,
    fertileWindow: { start: null, end: null, active: false },
  };
}

const CALENDAR_BODY = {
  data: {
    profile: {
      goal: "GENERAL_HEALTH",
      rawChartMode: false,
      predictionEnabled: true,
      cyclesObserved: 1,
    },
    prediction: null,
    verdict: buildVerdict(),
    stillLearning: false,
    days: buildCalendarDays(),
    meta: { generatedAt: new Date().toISOString() },
  },
  error: null,
};

const PROFILE_BODY = {
  data: {
    goal: "GENERAL_HEALTH",
    cycleTrackingEnabled: true,
    rawChartMode: false,
    predictionEnabled: true,
    discreetNotifications: false,
    sensitiveCategoryEncryption: false,
    typicalCycleLength: 28,
    typicalPeriodLength: 5,
    lutealPhaseLength: 14,
    updatedAt: new Date().toISOString(),
  },
  error: null,
};

const HISTORY_BODY = {
  data: {
    cycles: [],
    stats: {
      avgLengthDays: null,
      lengthVariabilityDays: null,
      avgPeriodLengthDays: null,
      regularity: "LEARNING",
    },
  },
  error: null,
};

const INSIGHTS_BODY = {
  data: {
    rows: buildInsightRows(),
    headline: {
      symptom: "HEADACHE",
      phase: "LUTEAL",
      rate: 0.3,
      confidence: "high",
    },
    symptomPatterns: buildInsightRows(),
  },
  error: null,
};

/**
 * A populated cycle-insights payload. The previous fixture was
 * `{ rows: [], headline: null, symptomPatterns: [] }` — an empty page, which
 * fits any viewport by construction and proved nothing about the width
 * guarantee it was written for. Long labels are deliberate: the tab strip and
 * the summary rows are where narrow-width text pressure shows up.
 */
function buildInsightRows(): Array<Record<string, unknown>> {
  const symptoms = [
    "HEADACHE",
    "CRAMPS",
    "BLOATING",
    "FATIGUE",
    "MOOD_SWINGS",
    "BREAST_TENDERNESS",
    "BACK_PAIN",
    "ACNE",
  ];
  return symptoms.map((symptom, i) => ({
    symptom,
    phase: ["MENSTRUAL", "FOLLICULAR", "OVULATORY", "LUTEAL"][i % 4],
    occurrences: 12 - i,
    totalDays: 40,
    rate: (12 - i) / 40,
    confidence: i < 4 ? "high" : "low",
  }));
}

test.describe("cycle mobile smoke", () => {
  test.use({ storageState: STORAGE_STATE_PATH });

  test.beforeEach(async ({ page }, testInfo) => {
    test.skip(testInfo.project.name !== "chromium-mobile", "mobile-only spec");

    // Flip the cycle feature gate ON by rewriting the real /api/auth/me
    // response — every other field stays authentic so the auth shell behaves
    // exactly as in production.
    await page.route("**/api/auth/me", async (route) => {
      const res = await route.fetch();
      const json = await res.json().catch(() => null);
      if (!json?.data) return route.fulfill({ response: res });
      json.data.cycleTrackingEnabled = true;
      return route.fulfill({
        response: res,
        body: JSON.stringify(json),
        headers: { ...res.headers(), "content-type": "application/json" },
      });
    });

    // Deterministic cycle reads.
    await page.route(/\/api\/cycle\/calendar(\?|$)/, (route) =>
      route.fulfill({
        status: 200,
        contentType: "application/json",
        body: JSON.stringify(CALENDAR_BODY),
      }),
    );
    await page.route("**/api/cycle/profile", (route) =>
      route.fulfill({
        status: 200,
        contentType: "application/json",
        body: JSON.stringify(PROFILE_BODY),
      }),
    );
    await page.route(/\/api\/cycle\/cycles(\?|$)/, (route) =>
      route.fulfill({
        status: 200,
        contentType: "application/json",
        body: JSON.stringify(HISTORY_BODY),
      }),
    );
    await page.route("**/api/cycle/insights", (route) =>
      route.fulfill({
        status: 200,
        contentType: "application/json",
        body: JSON.stringify(INSIGHTS_BODY),
      }),
    );
  });

  test("/cycle has no horizontal scroll at any phone width and the calendar cells clear the 44 px tap floor", async ({
    page,
  }) => {
    for (const width of PHONE_WIDTHS) {
      await page.setViewportSize({ width, height: 851 });
      await page.goto("/cycle", { waitUntil: "domcontentloaded" });

      // The cycle vertical mounted (the page redirects home if the gate is off).
      const wheel = page.locator('[data-slot="cycle-wheel-tile"]');
      await expect(wheel).toBeVisible();

      await settleForOverflowMeasurement(page);
      await expectNoHorizontalOverflow(page, `/cycle @${width}px`);
    }

    // Back to the Pixel-5 width for the tap-target measurement.
    await page.setViewportSize({ width: 393, height: 851 });
    await page.goto("/cycle", { waitUntil: "domcontentloaded" });
    await expect(page.locator('[data-slot="cycle-wheel-tile"]')).toBeVisible();
    await page.waitForLoadState("networkidle").catch(() => {});

    // 2) Calendar day cells clear the 44 px tap-target height floor.
    const cells = await page.locator('[role="gridcell"]').all();
    const failures: string[] = [];
    for (const cell of cells) {
      if (!(await cell.isVisible().catch(() => false))) continue;
      const box = await cell.boundingBox();
      if (!box) continue;
      if (box.height < 44) {
        const label = (await cell.getAttribute("aria-label")) ?? "(cell)";
        failures.push(`${label.slice(0, 30)} → ${box.height.toFixed(1)}px`);
      }
    }
    expect(
      failures,
      `Calendar cells below 44 px tall:\n  ${failures.join("\n  ")}`,
    ).toEqual([]);
  });
});