import { describe, expect, test } from "bun:test";
import { getDashboardDateWindows } from "@/lib/admin-dashboard";

describe("admin dashboard date windows", () => {
  test("uses Bangkok-local midnight for today", () => {
    const windows = getDashboardDateWindows(
      new Date("2026-07-27T18:30:00.000Z")
    );

    expect(windows.todayStart.toISOString()).toBe("2026-07-27T17:00:00.000Z");
    expect(windows.tomorrowStart.toISOString()).toBe("2026-07-28T17:00:00.000Z");
  });

  test("includes today and the previous six Bangkok calendar days", () => {
    const windows = getDashboardDateWindows(
      new Date("2026-07-28T05:00:00.000Z")
    );

    expect(windows.todayStart.toISOString()).toBe("2026-07-27T17:00:00.000Z");
    expect(windows.last7DaysStart.toISOString()).toBe(
      "2026-07-21T17:00:00.000Z"
    );
  });
});