import { describe, expect, it } from "vitest";
import type { Track } from "../types";
import { buildArtistSummaries } from "./artists";

const track = (id: string, artist: string, albumId: string): Track => ({
  id,
  title: id,
  artist,
  album: albumId,
  albumId,
  duration: 180,
  coverTone: "dusk",
});

describe("buildArtistSummaries", () => {
  it("groups artists case-insensitively and counts their albums and tracks", () => {
    const artists = buildArtistSummaries([
      track("song-1", "North Window", "album-1"),
      track("song-2", "north window", "album-1"),
      track("song-3", "North Window", "album-2"),
      track("song-4", "Mara Venn", "album-3"),
    ]);

    expect(artists.map((artist) => artist.name)).toEqual(["Mara Venn", "North Window"]);
    expect(artists[1]).toMatchObject({ albumCount: 2 });
    expect(artists[1].tracks).toHaveLength(3);
  });
});