import { describe, it, expect } from "vitest";
import { computeStaleness, isMcError } from "@/lib/types";

describe("computeStaleness", () => {
  it("returns 'normal' for null timestamp", () => {
    expect(computeStaleness(null)).toBe("normal");
  });

  it("returns 'fresh' for items less than 1 day old", () => {
    const twoHoursAgo = new Date(Date.now() - 2 * 60 * 60 * 1000).toISOString();
    expect(computeStaleness(twoHoursAgo)).toBe("fresh");
  });

  it("returns 'normal' for items 1-2 days old", () => {
    const thirtyHoursAgo = new Date(
      Date.now() - 30 * 60 * 60 * 1000
    ).toISOString();
    expect(computeStaleness(thirtyHoursAgo)).toBe("normal");
  });

  it("returns 'amber' for items 3-6 days old", () => {
    const fourDaysAgo = new Date(
      Date.now() - 4 * 24 * 60 * 60 * 1000
    ).toISOString();
    expect(computeStaleness(fourDaysAgo)).toBe("amber");
  });

  it("returns 'urgent' for items 7+ days old", () => {
    const tenDaysAgo = new Date(
      Date.now() - 10 * 24 * 60 * 60 * 1000
    ).toISOString();
    expect(computeStaleness(tenDaysAgo)).toBe("urgent");
  });
});

describe("isMcError", () => {
  it("returns true for valid McError objects", () => {
    const error = {
      code: "LORE_UNAVAILABLE",
      message: "lore CLI not found",
      recoverable: true,
    };
    expect(isMcError(error)).toBe(true);
  });

  it("returns false for plain strings", () => {
    expect(isMcError("some error")).toBe(false);
  });

  it("returns false for null", () => {
    expect(isMcError(null)).toBe(false);
  });

  it("returns false for objects missing required fields", () => {
    expect(isMcError({ code: "TEST" })).toBe(false);
    expect(isMcError({ message: "test" })).toBe(false);
    expect(isMcError({ recoverable: true })).toBe(false);
  });
});