import { describe, expect, it } from "vitest";

import {
  computeIsAddOnAtCreation,
  getAddonCutoffIso,
  previewIsAddOnFromCutoff,
  resolveIsAddOnForCreate,
} from "@/domain/work-orders/utils/wo-addon-cutoff";

describe("getAddonCutoffIso", () => {
  it("returns Saturday of the week prior to the scheduled week", () => {
    // Week of Mon 2026-07-06 → prior Saturday 2026-07-04
    expect(getAddonCutoffIso("2026-07-08")).toBe("2026-07-04");
    expect(getAddonCutoffIso("2026-07-06")).toBe("2026-07-04");
    expect(getAddonCutoffIso("2026-07-10")).toBe("2026-07-04");
  });

  it("returns null for missing or invalid scheduledOn", () => {
    expect(getAddonCutoffIso("")).toBeNull();
    expect(getAddonCutoffIso("not-a-date")).toBeNull();
  });
});

describe("previewIsAddOnFromCutoff", () => {
  it("returns true when created after prior-Saturday 23:59", () => {
    expect(
      previewIsAddOnFromCutoff({
        createdAt: "2026-07-05T00:00:00",
        scheduledOn: "2026-07-08",
      }),
    ).toBe(true);
  });

  it("returns false when created on or before prior-Saturday 23:59", () => {
    expect(
      previewIsAddOnFromCutoff({
        createdAt: "2026-07-04T23:59:59",
        scheduledOn: "2026-07-08",
      }),
    ).toBe(false);
    expect(
      previewIsAddOnFromCutoff({
        createdAt: "2026-07-03T12:00:00",
        scheduledOn: "2026-07-08",
      }),
    ).toBe(false);
  });

  it("returns null when scheduledOn is missing", () => {
    expect(
      previewIsAddOnFromCutoff({
        createdAt: new Date("2026-07-05T12:00:00"),
        scheduledOn: "",
      }),
    ).toBeNull();
  });

  it("keeps computeIsAddOnAtCreation as a deprecated alias", () => {
    expect(computeIsAddOnAtCreation).toBe(previewIsAddOnFromCutoff);
  });
});

describe("resolveIsAddOnForCreate", () => {
  it("uses cutoff preview when scheduledOn is set", () => {
    expect(
      resolveIsAddOnForCreate({
        createdAt: "2026-07-05T00:00:00",
        scheduledOn: "2026-07-08",
        manualOverride: false,
      }),
    ).toBe(true);
  });

  it("uses manual override when scheduledOn is missing", () => {
    expect(
      resolveIsAddOnForCreate({
        scheduledOn: "",
        manualOverride: true,
      }),
    ).toBe(true);
    expect(
      resolveIsAddOnForCreate({
        scheduledOn: "",
        manualOverride: false,
      }),
    ).toBe(false);
  });
});