feat(spotify): implement milestone M4 importers

skills/spotify/tests/m3u.test.ts

@@ -0,0 +1,38 @@
+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("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");
+});