/**
 * Tests for the "server only" card rule shared by the grid and the list view.
 *
 * TRACES: UR-052 | DR-292 | UT-257
 */

import { describe, it, expect } from "vitest";
import { isServerOnly, type ServerOnlyInput } from "./serverOnly";

const offlineReveal: ServerOnlyInput = {
  isMediaItem: true,
  isConnected: false,
  revealServerCatalog: true,
  isDownloaded: false,
  isActivelyDownloading: false,
  hasDeviceContent: false,
};

describe("isServerOnly", () => {
  it("is true only offline, with the reveal on, for an item with nothing on the device", () => {
    expect(isServerOnly(offlineReveal)).toBe(true);
    expect(isServerOnly({ ...offlineReveal, isConnected: true })).toBe(false);
    expect(isServerOnly({ ...offlineReveal, revealServerCatalog: false })).toBe(false);
  });

  it("never greys a library tile: there is nothing to queue", () => {
    expect(isServerOnly({ ...offlineReveal, isMediaItem: false })).toBe(false);
  });

  it("does not grey the item's own completed or in-flight download", () => {
    expect(isServerOnly({ ...offlineReveal, isDownloaded: true })).toBe(false);
    expect(isServerOnly({ ...offlineReveal, isActivelyDownloading: true })).toBe(false);
  });

  it("does not grey a container whose children are on the device", () => {
    // The regression: an album has no download row of its own — its *tracks*
    // do — so a fully downloaded album greyed itself out and offered to queue
    // what was already there.
    expect(isServerOnly({ ...offlineReveal, hasDeviceContent: true })).toBe(false);
  });

  it("still greys a container with nothing downloaded under it", () => {
    expect(isServerOnly({ ...offlineReveal, hasDeviceContent: false })).toBe(true);
  });
});