import assert from "node:assert/strict";
import { mkdtemp, writeFile } from "node:fs/promises";
import { join } from "node:path";
import { tmpdir } from "node:os";
import { test } from "node:test";

import { parseM3u, readM3u } from "../src/importers/m3u.js";

test("parses EXTINF metadata and ignores comments", () => {
  const refs = parseM3u(`#EXTM3U
#EXTINF:123,Radiohead - Karma Police
/music/01 - ignored filename.mp3
# comment
#EXTINF:123,Massive Attack - Teardrop
/music/02 - fallback.mp3
`);

  assert.equal(refs.some((ref) => ref.artist === "Radiohead" && ref.title === "Karma Police"), true);
  assert.equal(refs.some((ref) => ref.artist === "Massive Attack" && ref.title === "Teardrop"), true);
});

test("falls back to filename when EXTINF is absent", () => {
  const refs = parseM3u("/music/01 - Radiohead - Karma Police.flac\n");

  assert.equal(refs[0].artist, "Radiohead");
  assert.equal(refs[0].title, "Karma Police");
});

test("falls back to the filename from Windows paths", () => {
  const refs = parseM3u(String.raw`C:\Users\fiori\iCloudDrive\Music\Classic Hits\Owner of a Lonely Heart.mp3`);

  assert.deepEqual(refs, [
    {
      source: "Owner of a Lonely Heart",
      query: "Owner of a Lonely Heart",
      title: "Owner of a Lonely Heart"
    }
  ]);
});

test("reads m3u from file", async () => {
  const root = await mkdtemp(join(tmpdir(), "spotify-m3u-"));
  const path = join(root, "playlist.m3u8");
  await writeFile(path, "#EXTINF:123,Radiohead - Karma Police\n/music/track.mp3\n");

  const refs = await readM3u(path);

  assert.equal(refs[0].artist, "Radiohead");
  assert.equal(refs[0].title, "Karma Police");
});