/**
 * Per-type HealthKit arrival ledger (#1173), against real Postgres.
 *
 * The Apple Health card used to show only when each type's newest SAMPLE was
 * taken. A type the phone hands over only on "Sync all" can carry a reading
 * from this morning and still never arrive in the background, so the card
 * needs when the server RECEIVED each type and under which trigger. These
 * cases pin the batch route's write, the duplicate rule for
 * `lastNewSampleAt`, the scoped-credential exclusion, and the status read
 * that serves it, including the newest-sample probe that replaced the
 * grouped read.
 */
import { NextRequest } from "next/server";
import { beforeEach, describe, expect, it, vi } from "vitest";

import { cookieJar, headerJar } from "./mock-next-headers";
import { getPrismaClient, truncateAllTables } from "./setup";

process.env.API_TOKEN_HMAC_KEY ??=
  "test-hmac-key-healthkit-type-sync-32-bytes-minimum-123456";

const { hashToken } = await import("@/lib/auth/hmac");

const USER_ID = "user-healthkit-type-sync";

vi.mock("next/headers", async () => {
  const { cookieJar, headerJar } = await import("./mock-next-headers");
  return {
    headers: vi.fn(async () => ({
      get: (name: string) => headerJar.get(name.toLowerCase()) ?? null,
    })),
    cookies: vi.fn(async () => ({
      get: (name: string) => {
        const value = cookieJar.get(name);
        return value ? { name, value } : undefined;
      },
      set: (name: string, value: string) => {
        cookieJar.set(name, value);
      },
      delete: (name: string) => {
        cookieJar.delete(name);
      },
    })),
  };
});

vi.mock("@/lib/db-compat", () => ({
  ensureDbCompatibility: vi.fn().mockResolvedValue(undefined),
}));

beforeEach(async () => {
  await truncateAllTables(getPrismaClient());
  cookieJar.clear();
  headerJar.clear();
  await getPrismaClient().user.create({
    data: {
      id: USER_ID,
      username: "healthkit-type-sync",
      email: "healthkit-type-sync@example.test",
      timezone: "UTC",
    },
  });
});

async function armSession(): Promise<void> {
  const session = await getPrismaClient().session.create({
    data: { userId: USER_ID, expiresAt: new Date(Date.now() + 3_600_000) },
  });
  cookieJar.set("healthlog_session", session.id);
}

function entry(
  hkIdentifier: string,
  value: number,
  unit: string,
  at: string,
  externalId: string,
) {
  return { hkIdentifier, value, unit, startDate: at, endDate: at, externalId };
}

async function postBatch(
  body: Record<string, unknown>,
  headers: Record<string, string> = {},
): Promise<Response> {
  const { POST } = await import("@/app/api/measurements/batch/route");
  return POST(
    new NextRequest("http://localhost/api/measurements/batch", {
      method: "POST",
      headers: { "content-type": "application/json", ...headers },
      body: JSON.stringify(body),
    }),
  );
}

const T1 = "2026-10-01T06:00:00.000Z";
const T2 = "2026-10-01T07:00:00.000Z";

describe("per-type arrival ledger (#1173)", () => {
  it("records each type a batch carried, with its trigger", async () => {
    await armSession();
    const res = await postBatch({
      syncTrigger: "manual",
      entries: [
        entry("HKQuantityTypeIdentifierBodyMass", 70, "kg", T1, "uuid-w1"),
        entry(
          "HKQuantityTypeIdentifierHeartRate",
          61,
          "count/min",
          T1,
          "uuid-p1",
        ),
        entry(
          "HKQuantityTypeIdentifierHeartRate",
          63,
          "count/min",
          T2,
          "uuid-p2",
        ),
      ],
    });
    expect(res.status).toBe(200);

    const rows = await getPrismaClient().healthKitTypeSync.findMany({
      where: { userId: USER_ID },
      orderBy: { type: "asc" },
    });
    expect(rows.map((row) => row.type).sort()).toEqual(["PULSE", "WEIGHT"]);
    for (const row of rows) {
      expect(row.lastTrigger).toBe("manual");
      expect(row.lastNewSampleAt?.toISOString()).toBe(
        row.lastReceivedAt.toISOString(),
      );
      // Stored as the instant it is, whatever zone the process runs in.
      expect(Math.abs(row.lastReceivedAt.getTime() - Date.now())).toBeLessThan(
        60_000,
      );
    }
  });

  it("keeps the arrival and dates the re-send on a duplicates-only batch (#1259)", async () => {
    await armSession();
    const weight = entry(
      "HKQuantityTypeIdentifierBodyMass",
      70,
      "kg",
      T1,
      "uuid-w1",
    );
    await postBatch({ syncTrigger: "foreground", entries: [weight] });
    const first = await getPrismaClient().healthKitTypeSync.findUniqueOrThrow({
      where: { userId_type: { userId: USER_ID, type: "WEIGHT" } },
    });

    await new Promise((resolve) => setTimeout(resolve, 20));
    await postBatch({ syncTrigger: "background", entries: [weight] });
    const second = await getPrismaClient().healthKitTypeSync.findUniqueOrThrow({
      where: { userId_type: { userId: USER_ID, type: "WEIGHT" } },
    });

    expect(second.lastTrigger).toBe("foreground");
    expect(second.lastReceivedAt).toEqual(first.lastReceivedAt);
    expect(second.lastBackgroundAt).toBeNull();
    expect(second.lastNewSampleAt?.toISOString()).toBe(
      first.lastNewSampleAt?.toISOString(),
    );
    expect(second.lastSeenDuplicateAt?.getTime()).toBeGreaterThan(
      first.lastReceivedAt.getTime(),
    );
  });

  it("stores a missing trigger as null rather than keeping the previous one", async () => {
    await armSession();
    await postBatch({
      syncTrigger: "push",
      entries: [
        entry("HKQuantityTypeIdentifierBodyMass", 70, "kg", T1, "uuid-w1"),
      ],
    });
    await postBatch({
      entries: [
        entry("HKQuantityTypeIdentifierBodyMass", 71, "kg", T2, "uuid-w2"),
      ],
    });
    const row = await getPrismaClient().healthKitTypeSync.findUniqueOrThrow({
      where: { userId_type: { userId: USER_ID, type: "WEIGHT" } },
    });
    expect(row.lastTrigger).toBeNull();
  });

  it("records nothing for MANUAL rows or for a scoped credential", async () => {
    await armSession();
    await postBatch({
      syncTrigger: "foreground",
      entries: [
        {
          ...entry(
            "HKQuantityTypeIdentifierBodyMass",
            70,
            "kg",
            T1,
            "manual-w1",
          ),
          source: "MANUAL",
        },
      ],
    });
    cookieJar.clear();

    const raw = `hlk_typesync_${"0".repeat(48)}`;
    await getPrismaClient().apiToken.create({
      data: {
        userId: USER_ID,
        name: "bridge",
        tokenHash: hashToken(raw),
        permissions: ["measurements:write"],
      },
    });
    headerJar.set("authorization", `Bearer ${raw}`);
    const res = await postBatch(
      {
        syncTrigger: "background",
        entries: [
          entry("HKQuantityTypeIdentifierBodyMass", 72, "kg", T2, "uuid-b1"),
        ],
      },
      { authorization: `Bearer ${raw}` },
    );
    expect(res.status).toBe(200);

    expect(
      await getPrismaClient().healthKitTypeSync.count({
        where: { userId: USER_ID },
      }),
    ).toBe(0);
  });

  it("serves the arrival facts beside the newest live sample", async () => {
    await armSession();
    await postBatch({
      syncTrigger: "manual",
      entries: [
        entry(
          "HKQuantityTypeIdentifierRespiratoryRate",
          14,
          "count/min",
          T1,
          "uuid-r1",
        ),
        entry(
          "HKQuantityTypeIdentifierRespiratoryRate",
          15,
          "count/min",
          T2,
          "uuid-r2",
        ),
      ],
    });
    // A type that came only from the export import: live rows, no arrival.
    await getPrismaClient().measurement.create({
      data: {
        userId: USER_ID,
        type: "WEIGHT",
        value: 70,
        unit: "kg",
        measuredAt: new Date(T1),
        source: "APPLE_HEALTH",
        externalId: "xml-w1",
      },
    });
    // The newest respiratory row is a tombstone; the read must skip it.
    await getPrismaClient().measurement.updateMany({
      where: { userId: USER_ID, externalId: "uuid-r2" },
      data: { deletedAt: new Date() },
    });

    const { GET } = await import("@/app/api/integrations/healthkit/route");
    const res = await (GET as unknown as (r: NextRequest) => Promise<Response>)(
      new NextRequest("http://localhost/api/integrations/healthkit"),
    );
    expect(res.status).toBe(200);
    const body = (await res.json()) as {
      data: {
        metricFreshness: Array<{
          type: string;
          lastSeenAt: string;
          lastReceivedAt?: string | null;
          lastTrigger?: string | null;
        }>;
      };
    };
    const byType = Object.fromEntries(
      body.data.metricFreshness.map((row) => [row.type, row]),
    );
    expect(byType.RESPIRATORY_RATE.lastSeenAt).toBe(T1);
    expect(byType.RESPIRATORY_RATE.lastTrigger).toBe("manual");
    expect(byType.RESPIRATORY_RATE.lastReceivedAt).toEqual(expect.any(String));
    expect(byType.WEIGHT).toMatchObject({
      lastSeenAt: T1,
      lastReceivedAt: null,
      lastTrigger: null,
    });
  });
});

async function seedAppleMedication(): Promise<string> {
  const med = await getPrismaClient().medication.create({
    data: {
      userId: USER_ID,
      name: "Magnesium",
      dose: "400mg",
      active: true,
      // Dose events from Apple Health only target a mirrored medication.
      externalSource: "APPLE_HEALTH",
      externalId: "hk-medication-type-sync",
    },
  });
  return med.id;
}

async function postDoses(body: Record<string, unknown>): Promise<Response> {
  const { POST } = await import("@/app/api/medications/intake/bulk/route");
  return POST(
    new NextRequest("http://localhost/api/medications/intake/bulk", {
      method: "POST",
      headers: { "content-type": "application/json" },
      body: JSON.stringify(body),
    }),
  );
}

function appleDose(medicationId: string, takenAt: string, externalId: string) {
  return {
    medicationId,
    scheduledFor: takenAt,
    takenAt,
    source: "APPLE_HEALTH",
    externalId,
  };
}

type FreshnessRow = {
  type: string;
  lastSeenAt: string;
  stale: boolean;
  lastReceivedAt?: string | null;
  lastTrigger?: string | null;
  lastNewSampleAt?: string | null;
  lastBackgroundAt?: string | null;
};

async function readFreshness(): Promise<Record<string, FreshnessRow>> {
  const { GET } = await import("@/app/api/integrations/healthkit/route");
  const res = await (GET as unknown as (r: NextRequest) => Promise<Response>)(
    new NextRequest("http://localhost/api/integrations/healthkit"),
  );
  expect(res.status).toBe(200);
  const body = (await res.json()) as {
    data: { metricFreshness: FreshnessRow[] };
  };
  return Object.fromEntries(
    body.data.metricFreshness.map((row) => [row.type, row]),
  );
}

const D1 = "2026-10-02T08:00:00.000Z";
const D2 = "2026-10-03T08:00:00.000Z";

describe("Apple Health dose arrivals and the last background arrival (v1.42.4)", () => {
  it("serves a dose sent in the background as the MEDICATION_DOSE entry", async () => {
    await armSession();
    const medicationId = await seedAppleMedication();
    const res = await postDoses({
      syncTrigger: "background",
      entries: [appleDose(medicationId, D1, "hk-dose-1")],
    });
    expect(res.status).toBe(200);

    const dose = (await readFreshness()).MEDICATION_DOSE;
    expect(dose).toMatchObject({
      lastSeenAt: D1,
      stale: false,
      lastTrigger: "background",
    });
    expect(dose.lastReceivedAt).toEqual(expect.any(String));
    expect(dose.lastBackgroundAt).toBe(dose.lastReceivedAt);
    expect(dose.lastNewSampleAt).toBe(dose.lastReceivedAt);
    expect(
      Math.abs(Date.parse(dose.lastReceivedAt!) - Date.now()),
    ).toBeLessThan(60_000);
  });

  it("keeps the background date when a later foreground batch replays the dose", async () => {
    await armSession();
    const medicationId = await seedAppleMedication();
    const first = appleDose(medicationId, D1, "hk-dose-1");
    await postDoses({ syncTrigger: "background", entries: [first] });
    const before = (await readFreshness()).MEDICATION_DOSE;

    await new Promise((resolve) => setTimeout(resolve, 20));
    const res = await postDoses({
      syncTrigger: "foreground",
      entries: [first, appleDose(medicationId, D2, "hk-dose-2")],
    });
    const body = (await res.json()) as {
      data: { entries: Array<{ status: string }> };
    };
    expect(body.data.entries.map((e) => e.status)).toEqual([
      "duplicate",
      "inserted",
    ]);

    const after = (await readFreshness()).MEDICATION_DOSE;
    expect(after.lastTrigger).toBe("foreground");
    expect(Date.parse(after.lastReceivedAt!)).toBeGreaterThan(
      Date.parse(before.lastReceivedAt!),
    );
    expect(after.lastBackgroundAt).toBe(before.lastBackgroundAt);
    expect(after.lastSeenAt).toBe(D2);
  });

  it("records no dose arrival for a dose taken in the app", async () => {
    await armSession();
    const medicationId = await seedAppleMedication();
    // The mirror gate refuses non-Apple entries on a mirrored medication only
    // for APPLE_HEALTH entries; a plain entry lands as an app dose.
    const res = await postDoses({
      syncTrigger: "background",
      entries: [{ medicationId, scheduledFor: D1, takenAt: D1 }],
    });
    expect(res.status).toBe(200);
    expect(
      await getPrismaClient().healthKitTypeSync.count({
        where: { userId: USER_ID },
      }),
    ).toBe(0);
    expect((await readFreshness()).MEDICATION_DOSE).toBeUndefined();
  });

  it("keeps a measurement type's background date across a later foreground batch", async () => {
    await armSession();
    await postBatch({
      syncTrigger: "background",
      entries: [
        entry("HKQuantityTypeIdentifierBodyMass", 70, "kg", T1, "uuid-w1"),
      ],
    });
    const background =
      await getPrismaClient().healthKitTypeSync.findUniqueOrThrow({
        where: { userId_type: { userId: USER_ID, type: "WEIGHT" } },
      });
    expect(background.lastBackgroundAt?.toISOString()).toBe(
      background.lastReceivedAt.toISOString(),
    );

    await new Promise((resolve) => setTimeout(resolve, 20));
    await postBatch({
      syncTrigger: "foreground",
      entries: [
        entry("HKQuantityTypeIdentifierBodyMass", 71, "kg", T2, "uuid-w2"),
      ],
    });
    const weight = (await readFreshness()).WEIGHT;
    expect(weight.lastTrigger).toBe("foreground");
    expect(weight.lastReceivedAt).not.toBe(
      background.lastReceivedAt.toISOString(),
    );
    expect(weight.lastBackgroundAt).toBe(
      background.lastBackgroundAt?.toISOString(),
    );
  });

  it("does not date a background arrival for a push-triggered batch", async () => {
    await armSession();
    await postBatch({
      syncTrigger: "push",
      entries: [
        entry("HKQuantityTypeIdentifierBodyMass", 70, "kg", T1, "uuid-w1"),
      ],
    });
    expect((await readFreshness()).WEIGHT.lastBackgroundAt).toBeNull();
  });
});