import { describe, expect, it } from "vitest";
import {
  createMeasurementSchema,
  getUnitForType,
  listMeasurementsSchema,
  validateMeasurementRange,
} from "../measurement";

describe("measurement validation", () => {
  describe("getUnitForType", () => {
    it("returns canonical unit for each measurement type", () => {
      expect(getUnitForType("WEIGHT")).toBe("kg");
      expect(getUnitForType("BLOOD_PRESSURE_SYS")).toBe("mmHg");
      expect(getUnitForType("BLOOD_PRESSURE_DIA")).toBe("mmHg");
      expect(getUnitForType("PULSE")).toBe("bpm");
      expect(getUnitForType("BODY_FAT")).toBe("%");
      // v1.4.23 — sleep duration shifted from hours to minutes so per-stage
      // HealthKit category samples can be stored without precision loss.
      expect(getUnitForType("SLEEP_DURATION")).toBe("minutes");
      expect(getUnitForType("ACTIVITY_STEPS")).toBe("steps");
      expect(getUnitForType("BLOOD_GLUCOSE")).toBe("mg/dL");
      expect(getUnitForType("TOTAL_BODY_WATER")).toBe("kg");
      expect(getUnitForType("BONE_MASS")).toBe("kg");
      // ── v1.4.23 Apple Health canonical units ──
      expect(getUnitForType("HEART_RATE_VARIABILITY")).toBe("ms");
      expect(getUnitForType("RESTING_HEART_RATE")).toBe("bpm");
      expect(getUnitForType("ACTIVE_ENERGY_BURNED")).toBe("kcal");
      expect(getUnitForType("FLIGHTS_CLIMBED")).toBe("flights");
      expect(getUnitForType("WALKING_RUNNING_DISTANCE")).toBe("m");
      expect(getUnitForType("VO2_MAX")).toBe("mL/(kg·min)");
      expect(getUnitForType("BODY_TEMPERATURE")).toBe("celsius");
    });

    it("returns 'unknown' for unrecognised types", () => {
      expect(getUnitForType("MADE_UP_TYPE")).toBe("unknown");
    });
  });

  describe("validateMeasurementRange", () => {
    it("rejects values below the plausible minimum", () => {
      expect(validateMeasurementRange("WEIGHT", 0.5)).toMatch(/between/i);
      expect(validateMeasurementRange("BONE_MASS", 0.1)).toMatch(/between/i);
      expect(validateMeasurementRange("TOTAL_BODY_WATER", 1)).toMatch(
        /between/i,
      );
    });

    it("rejects values above the plausible maximum", () => {
      expect(validateMeasurementRange("WEIGHT", 600)).toMatch(/between/i);
      expect(validateMeasurementRange("BONE_MASS", 12)).toMatch(/between/i);
      expect(validateMeasurementRange("TOTAL_BODY_WATER", 200)).toMatch(
        /between/i,
      );
    });

    it("accepts values inside the plausible range", () => {
      expect(validateMeasurementRange("WEIGHT", 75)).toBeNull();
      expect(validateMeasurementRange("BONE_MASS", 3.0)).toBeNull();
      expect(validateMeasurementRange("TOTAL_BODY_WATER", 42)).toBeNull();
    });

    it("returns null for unknown types (no range = no opinion)", () => {
      expect(validateMeasurementRange("MADE_UP_TYPE", 9999)).toBeNull();
    });
  });

  describe("createMeasurementSchema", () => {
    const validBase = {
      value: 75,
      measuredAt: "2026-04-27T08:00:00.000Z",
    };

    it("accepts a TOTAL_BODY_WATER measurement without glucoseContext", () => {
      const parsed = createMeasurementSchema.safeParse({
        ...validBase,
        type: "TOTAL_BODY_WATER",
        value: 42,
      });
      expect(parsed.success).toBe(true);
    });

    it("accepts a BONE_MASS measurement without glucoseContext", () => {
      const parsed = createMeasurementSchema.safeParse({
        ...validBase,
        type: "BONE_MASS",
        value: 3.2,
      });
      expect(parsed.success).toBe(true);
    });

    it("rejects out-of-range values for body composition types", () => {
      const tooMuchWater = createMeasurementSchema.safeParse({
        ...validBase,
        type: "TOTAL_BODY_WATER",
        value: 500,
      });
      expect(tooMuchWater.success).toBe(false);

      const tooLittleBone = createMeasurementSchema.safeParse({
        ...validBase,
        type: "BONE_MASS",
        value: 0.1,
      });
      expect(tooLittleBone.success).toBe(false);
    });

    it("rejects glucoseContext on non-glucose measurements", () => {
      const parsed = createMeasurementSchema.safeParse({
        ...validBase,
        type: "TOTAL_BODY_WATER",
        value: 42,
        glucoseContext: "FASTING",
      });
      expect(parsed.success).toBe(false);
    });

    it("requires glucoseContext on BLOOD_GLUCOSE measurements", () => {
      const parsed = createMeasurementSchema.safeParse({
        ...validBase,
        type: "BLOOD_GLUCOSE",
        value: 95,
      });
      expect(parsed.success).toBe(false);
    });

    it("rejects unrecognised measurement types", () => {
      const parsed = createMeasurementSchema.safeParse({
        ...validBase,
        type: "TBD_NEW_TYPE",
        value: 1,
      });
      expect(parsed.success).toBe(false);
    });

    // v1.17 W1b — shared `validateEntryInstant` plausibility bound.
    it("rejects a future-dated measurement", () => {
      const future = new Date(Date.now() + 60 * 60 * 1000).toISOString();
      const parsed = createMeasurementSchema.safeParse({
        ...validBase,
        type: "WEIGHT",
        value: 80,
        measuredAt: future,
      });
      expect(parsed.success).toBe(false);
    });

    it("accepts a sane backdated measurement", () => {
      const past = new Date(Date.now() - 24 * 60 * 60 * 1000).toISOString();
      const parsed = createMeasurementSchema.safeParse({
        ...validBase,
        type: "WEIGHT",
        value: 80,
        measuredAt: past,
      });
      expect(parsed.success).toBe(true);
    });

    it("rejects a measurement dated before 1900", () => {
      const parsed = createMeasurementSchema.safeParse({
        ...validBase,
        type: "WEIGHT",
        value: 80,
        measuredAt: "1899-06-01T00:00:00.000Z",
      });
      expect(parsed.success).toBe(false);
    });

    // v1.4.25 W10 reconcile (code-review M4): `deviceType` was a
    // batch-only field; the single-entry schema silently dropped it.
    // Now it parses through so the column is populated whether the
    // client posts one row or many.
    it("accepts an optional deviceType tag and surfaces it on the parsed value", () => {
      const parsed = createMeasurementSchema.safeParse({
        ...validBase,
        type: "WEIGHT",
        value: 82,
        deviceType: "scale",
      });
      expect(parsed.success).toBe(true);
      if (parsed.success) {
        expect(parsed.data.deviceType).toBe("scale");
      }
    });

    it("accepts a null deviceType so a client can explicitly clear the column", () => {
      const parsed = createMeasurementSchema.safeParse({
        ...validBase,
        type: "WEIGHT",
        value: 82,
        deviceType: null,
      });
      expect(parsed.success).toBe(true);
      if (parsed.success) {
        expect(parsed.data.deviceType).toBeNull();
      }
    });

    it("treats a missing deviceType as undefined (back-compat with pre-W10 clients)", () => {
      const parsed = createMeasurementSchema.safeParse({
        ...validBase,
        type: "WEIGHT",
        value: 82,
      });
      expect(parsed.success).toBe(true);
      if (parsed.success) {
        expect(parsed.data.deviceType).toBeUndefined();
      }
    });

    // v1.17.1 — the `stats:`-prefix overwrite contract is deliberately
    // batch-scoped. The single manual POST must never accept an
    // `externalId`, which would open a client-controlled overwrite vector
    // on the `(userId, type, source, externalId)` unique key. The schema
    // strips it (no passthrough), so the parsed value never carries one.
    it("does not surface an externalId on the manual create schema (overwrite contract)", () => {
      const parsed = createMeasurementSchema.safeParse({
        ...validBase,
        type: "WEIGHT",
        value: 82,
        externalId: "stats:HKQuantityTypeIdentifierBodyMass:2026-04-27",
      });
      expect(parsed.success).toBe(true);
      if (parsed.success) {
        expect(
          (parsed.data as Record<string, unknown>).externalId,
        ).toBeUndefined();
      }
    });
  });

  // v1.4.37 W7c — list-view "one row per day" mode for cumulative
  // types. The schema pins the optional `groupBy` enum + `dayKey`
  // shape; the route gates each branch on whether the resolved type
  // is in `CUMULATIVE_HK_TYPES`. Tests below pin the parser surface.
  describe("listMeasurementsSchema — v1.4.37 W7c groupBy + dayKey", () => {
    it("accepts an omitted groupBy + dayKey (legacy per-sample list)", () => {
      const parsed = listMeasurementsSchema.safeParse({});
      expect(parsed.success).toBe(true);
      if (parsed.success) {
        expect(parsed.data.groupBy).toBeUndefined();
        expect(parsed.data.dayKey).toBeUndefined();
      }
    });

    it("accepts groupBy=day", () => {
      const parsed = listMeasurementsSchema.safeParse({
        type: "ACTIVITY_STEPS",
        groupBy: "day",
      });
      expect(parsed.success).toBe(true);
      if (parsed.success) {
        expect(parsed.data.groupBy).toBe("day");
      }
    });

    it("rejects an unknown groupBy value", () => {
      const parsed = listMeasurementsSchema.safeParse({
        type: "ACTIVITY_STEPS",
        groupBy: "week",
      });
      expect(parsed.success).toBe(false);
    });

    it("accepts a well-formed YYYY-MM-DD dayKey", () => {
      const parsed = listMeasurementsSchema.safeParse({
        type: "ACTIVITY_STEPS",
        dayKey: "2026-05-15",
      });
      expect(parsed.success).toBe(true);
      if (parsed.success) {
        expect(parsed.data.dayKey).toBe("2026-05-15");
      }
    });

    it("rejects a malformed dayKey (DD.MM.YYYY)", () => {
      const parsed = listMeasurementsSchema.safeParse({
        type: "ACTIVITY_STEPS",
        dayKey: "15.05.2026",
      });
      expect(parsed.success).toBe(false);
    });

    it("rejects a partial dayKey (missing day component)", () => {
      const parsed = listMeasurementsSchema.safeParse({
        type: "ACTIVITY_STEPS",
        dayKey: "2026-05",
      });
      expect(parsed.success).toBe(false);
    });
  });

  describe("listMeasurementsSchema — v1.15.13 sourceEq filter", () => {
    it("accepts a valid MeasurementSource on sourceEq", () => {
      const parsed = listMeasurementsSchema.safeParse({ sourceEq: "WITHINGS" });
      expect(parsed.success).toBe(true);
      if (parsed.success) {
        expect(parsed.data.sourceEq).toBe("WITHINGS");
      }
    });

    it("leaves sourceEq undefined when omitted", () => {
      const parsed = listMeasurementsSchema.safeParse({});
      expect(parsed.success).toBe(true);
      if (parsed.success) {
        expect(parsed.data.sourceEq).toBeUndefined();
      }
    });

    it("rejects an unknown sourceEq value", () => {
      const parsed = listMeasurementsSchema.safeParse({ sourceEq: "BOGUS" });
      expect(parsed.success).toBe(false);
    });

    it("rejects the rollup opt-in value on sourceEq (distinct from source)", () => {
      // `rollup` is the rollup-tier opt-in for `source`, NOT a valid
      // MeasurementSource filter — sourceEq must not accept it.
      const parsed = listMeasurementsSchema.safeParse({ sourceEq: "rollup" });
      expect(parsed.success).toBe(false);
    });

    it("accepts source=rollup and sourceEq together (independent params)", () => {
      const parsed = listMeasurementsSchema.safeParse({
        source: "rollup",
        sourceEq: "APPLE_HEALTH",
      });
      expect(parsed.success).toBe(true);
      if (parsed.success) {
        expect(parsed.data.source).toBe("rollup");
        expect(parsed.data.sourceEq).toBe("APPLE_HEALTH");
      }
    });
  });

  describe("listMeasurementsSchema — v1.18.5 value-range filter", () => {
    it("coerces valueMin / valueMax from query strings", () => {
      const parsed = listMeasurementsSchema.safeParse({
        valueMin: "80",
        valueMax: "120",
      });
      expect(parsed.success).toBe(true);
      if (parsed.success) {
        expect(parsed.data.valueMin).toBe(80);
        expect(parsed.data.valueMax).toBe(120);
      }
    });

    it("accepts an open-ended min-only range", () => {
      const parsed = listMeasurementsSchema.safeParse({ valueMin: "100" });
      expect(parsed.success).toBe(true);
      if (parsed.success) {
        expect(parsed.data.valueMin).toBe(100);
        expect(parsed.data.valueMax).toBeUndefined();
      }
    });

    it("accepts an open-ended max-only range", () => {
      const parsed = listMeasurementsSchema.safeParse({ valueMax: "90" });
      expect(parsed.success).toBe(true);
      if (parsed.success) {
        expect(parsed.data.valueMax).toBe(90);
        expect(parsed.data.valueMin).toBeUndefined();
      }
    });

    it("accepts valueMin == valueMax (exact-value band)", () => {
      const parsed = listMeasurementsSchema.safeParse({
        valueMin: "72",
        valueMax: "72",
      });
      expect(parsed.success).toBe(true);
    });

    it("rejects an inverted range (valueMin > valueMax) with a 422-shaped issue", () => {
      const parsed = listMeasurementsSchema.safeParse({
        valueMin: "120",
        valueMax: "80",
      });
      expect(parsed.success).toBe(false);
      if (!parsed.success) {
        expect(parsed.error.issues.some((i) => i.path[0] === "valueMin")).toBe(
          true,
        );
      }
    });

    it("leaves both bounds undefined when omitted", () => {
      const parsed = listMeasurementsSchema.safeParse({});
      expect(parsed.success).toBe(true);
      if (parsed.success) {
        expect(parsed.data.valueMin).toBeUndefined();
        expect(parsed.data.valueMax).toBeUndefined();
      }
    });
  });

  // v1.4.38 — the per-day drill-down branch always returns at most
  // 1000 rows (one pathological phone-only stepCount day). Push the
  // cap into the validator so a caller asking for more sees a 422
  // instead of a silent server-side Math.min clamp.
  describe("listMeasurementsSchema — v1.4.38 dayKey limit ceiling", () => {
    it("accepts limit=1000 alongside a dayKey", () => {
      const parsed = listMeasurementsSchema.safeParse({
        type: "ACTIVITY_STEPS",
        dayKey: "2026-05-15",
        limit: 1000,
      });
      expect(parsed.success).toBe(true);
    });

    it("rejects limit=1001 when dayKey is set (drill-down hard cap)", () => {
      const parsed = listMeasurementsSchema.safeParse({
        type: "ACTIVITY_STEPS",
        dayKey: "2026-05-15",
        limit: 1001,
      });
      expect(parsed.success).toBe(false);
      if (!parsed.success) {
        expect(parsed.error.issues[0].message).toMatch(/<=\s*1000/);
        expect(parsed.error.issues[0].path).toEqual(["limit"]);
      }
    });

    it("accepts limit=5000 when dayKey is omitted (legacy ceiling)", () => {
      const parsed = listMeasurementsSchema.safeParse({
        type: "ACTIVITY_STEPS",
        limit: 5000,
      });
      expect(parsed.success).toBe(true);
    });
  });

  // v1.10.0 — computed scores (WX-C).
  describe("computed scores", () => {
    it("canonical unit is 'score' for each computed-score type", () => {
      expect(getUnitForType("RECOVERY_SCORE")).toBe("score");
      expect(getUnitForType("STRESS_SCORE")).toBe("score");
      expect(getUnitForType("STRAIN_SCORE")).toBe("score");
    });

    it("plausibility range is 0..100 for a computed score", () => {
      expect(validateMeasurementRange("RECOVERY_SCORE", 0)).toBeNull();
      expect(validateMeasurementRange("RECOVERY_SCORE", 100)).toBeNull();
      expect(validateMeasurementRange("RECOVERY_SCORE", -1)).not.toBeNull();
      expect(validateMeasurementRange("RECOVERY_SCORE", 101)).not.toBeNull();
    });

    it("rejects every non-writable source on a client write", () => {
      // v1.10.0 QA — the single-POST validates `source` against the
      // client-writable subset {MANUAL, APPLE_HEALTH}. COMPUTED (server
      // scores), WITHINGS (the Withings webhook), and IMPORT (the CSV
      // importer) are all server-owned and must be rejected so a client
      // cannot forge a row attributed to a source it does not own.
      for (const source of ["COMPUTED", "WITHINGS", "IMPORT"]) {
        const parsed = createMeasurementSchema.safeParse({
          type: "WEIGHT",
          value: 80,
          measuredAt: "2026-06-02T12:00:00Z",
          source,
        });
        expect(parsed.success, `expected ${source} to be rejected`).toBe(false);
        if (!parsed.success) {
          const issue = parsed.error.issues.find((i) =>
            i.path.includes("source"),
          );
          expect(issue, `expected a source-path rejection for ${source}`).toBeDefined();
        }
      }
    });

    it("accepts the client-writable sources MANUAL and APPLE_HEALTH", () => {
      for (const source of ["MANUAL", "APPLE_HEALTH"]) {
        const parsed = createMeasurementSchema.safeParse({
          type: "WEIGHT",
          value: 80,
          measuredAt: "2026-06-02T12:00:00Z",
          source,
        });
        expect(parsed.success, `expected ${source} to be accepted`).toBe(true);
      }
    });

    it("defaults source to MANUAL when omitted", () => {
      const parsed = createMeasurementSchema.safeParse({
        type: "WEIGHT",
        value: 80,
        measuredAt: "2026-06-02T12:00:00Z",
      });
      expect(parsed.success).toBe(true);
      if (parsed.success) expect(parsed.data.source).toBe("MANUAL");
    });
  });
});