import assert from "node:assert/strict";
import test from "node:test";

import {
  DECLARED_PERIOD_RANGES,
  declaredClockRange,
  declaredClockRangeFromProfile,
  declaredWindowProbeClocks,
  matchingDeclaredPeriod,
} from "../src/lib/declared-birth-window.ts";

test("evening probes stay inside the declared range and are not the midpoint", () => {
  const range = DECLARED_PERIOD_RANGES.evening;
  const clocks = declaredWindowProbeClocks(range.startTime, range.endTime);

  assert.deepEqual(clocks, ["18:00", "19:40", "21:19", "22:59"]);
  assert.equal(clocks.includes("20:29"), false);
  assert.equal(clocks.includes("20:30"), false);
  assert.equal(clocks.includes("12:00"), false);
  assert.equal(clocks.includes("00:00"), false);
});

test("unknown-day probes keep midnight as a sample, not as a birth minute", () => {
  const range = declaredClockRange({ source: "unknown" });
  assert.ok(range);
  const clocks = declaredWindowProbeClocks(range.startTime, range.endTime);
  assert.equal(clocks[0], "00:00");
  assert.equal(clocks.at(-1), "23:59");
  assert.equal(clocks.length, 4);
});

test("period_only without a period cannot invent a clock range", () => {
  assert.equal(declaredClockRange({ source: "period_only" }), null);
  assert.deepEqual(
    declaredClockRange({ source: "period_only", period: "evening" }),
    DECLARED_PERIOD_RANGES.evening,
  );
});

test("a custom start and end clock beats a leftover afternoon bucket", () => {
  assert.deepEqual(
    declaredClockRange({
      source: "period_only",
      period: "afternoon",
      startTime: "14:30",
      endTime: "15:00",
    }),
    { label: "14:30—15:00", startTime: "14:30", endTime: "15:00" },
  );
  assert.equal(matchingDeclaredPeriod("14:30", "15:00"), null);
  assert.equal(matchingDeclaredPeriod("12:00", "17:59"), "afternoon");
  assert.equal(
    declaredClockRange({
      source: "period_only",
      startTime: "14:30",
      endTime: "14:30",
    }),
    null,
  );
  assert.deepEqual(
    declaredClockRange({
      source: "period_only",
      startTime: "23:00",
      endTime: "03:59",
    }),
    { label: "23:00—03:59", startTime: "23:00", endTime: "03:59" },
  );
});

test("profile readers prefer declared window clocks over the period bucket", () => {
  assert.deepEqual(
    declaredClockRangeFromProfile({
      birth_time_source: "period_only",
      birth_time_period: "afternoon",
      declared_window_start: "14:30",
      declared_window_end: "15:00",
    }),
    { label: "14:30—15:00", startTime: "14:30", endTime: "15:00" },
  );
  assert.deepEqual(
    declaredClockRangeFromProfile({
      birthTimeSource: "period_only",
      birthTimePeriod: "evening",
    }),
    DECLARED_PERIOD_RANGES.evening,
  );
});