import { describe, it, expect } from "vitest";
import { resolveReportsPeriod } from "./useReportsPeriod";

describe("resolveReportsPeriod", () => {
  const fixedToday = new Date("2026-04-14T12:00:00Z");

  it("defaults to current civil year when no URL params are set", () => {
    const result = resolveReportsPeriod(null, null, null, fixedToday);
    expect(result.from).toBe("2026-01-01");
    expect(result.to).toBe("2026-12-31");
    expect(result.period).toBe("custom");
  });

  it("restores state from bookmarked from/to params", () => {
    const result = resolveReportsPeriod("2025-03-01", "2025-06-30", null, fixedToday);
    expect(result.from).toBe("2025-03-01");
    expect(result.to).toBe("2025-06-30");
    expect(result.period).toBe("custom");
  });

  it("keeps period=yearly alongside explicit from/to", () => {
    const result = resolveReportsPeriod("2024-01-01", "2024-12-31", "year", fixedToday);
    expect(result.period).toBe("year");
  });

  it("ignores malformed dates and falls back to the civil year", () => {
    const result = resolveReportsPeriod("not-a-date", "also-not", null, fixedToday);
    expect(result.from).toBe("2026-01-01");
    expect(result.to).toBe("2026-12-31");
    expect(result.period).toBe("custom");
  });

  it("resolves preset period values without from/to", () => {
    const result = resolveReportsPeriod(null, null, "6months", fixedToday);
    expect(result.period).toBe("6months");
    expect(result.from).toBeTruthy();
    expect(result.to).toBeTruthy();
  });

  it("rejects an invalid period string and falls back to civil year custom", () => {
    const result = resolveReportsPeriod(null, null, "bogus", fixedToday);
    expect(result.period).toBe("custom");
    expect(result.from).toBe("2026-01-01");
  });

  it("treats `all` as a preset with empty range (service handles the clauses)", () => {
    const result = resolveReportsPeriod(null, null, "all", fixedToday);
    expect(result.period).toBe("all");
    // Fallback civil year when computeDateRange returns empty
    expect(result.from).toBe("2026-01-01");
    expect(result.to).toBe("2026-12-31");
  });
});