import { describe, expect, it } from "vitest";
import { evaluateCartAttributes } from "../../extensions/validation-slot/src/evaluate.js";

const COMPLETE = {
  dd_method: "PICKUP",
  dd_date: "2026-08-25",
  dd_start_min: "540",
  dd_end_min: "600",
  dd_location_id: "loc_123",
};

describe("evaluateCartAttributes", () => {
  it("is valid when every required attribute is present", () => {
    expect(evaluateCartAttributes(COMPLETE)).toEqual({ valid: true });
  });

  it("rejects a cart with no scheduling attributes at all", () => {
    const result = evaluateCartAttributes({});
    expect(result).toMatchObject({ valid: false, reason: "no_slot_selected" });
  });

  it("rejects a cart missing just one required attribute", () => {
    const { dd_start_min, ...rest } = COMPLETE;
    const result = evaluateCartAttributes(rest);
    expect(result).toMatchObject({ valid: false, reason: "incomplete_slot_selection", missing: ["dd_start_min"] });
  });

  it("treats an empty-string attribute the same as missing", () => {
    const result = evaluateCartAttributes({ ...COMPLETE, dd_date: "" });
    expect(result.valid).toBe(false);
  });

  it("treats null/undefined attribute values as missing", () => {
    const result = evaluateCartAttributes({ ...COMPLETE, dd_location_id: null, dd_method: undefined });
    expect(result.valid).toBe(false);
    if (result.valid) throw new Error("unreachable");
    expect(result.reason).toBe("incomplete_slot_selection");
    expect([...result.missing].sort()).toEqual(["dd_location_id", "dd_method"]);
  });
});