// Unit tests for the resolver's pure logic (run with `node --test`). Zero-dep.
import { test } from "node:test";
import assert from "node:assert/strict";
import { norm, googleSearch, pickArtist, linkResult, isSearchUrl, isHttpUrl } from "./lib.js";

test("norm lowercases, trims, NFKC-normalizes", () => {
  assert.equal(norm("  Cerebral Bore "), "cerebral bore");
  assert.equal(norm("DEVOURMENT"), "devourment");
});

test("pickArtist matches case-insensitively, rejects non-matches", () => {
  const items = [{ name: "Cattle Decapitation" }, { name: "Cerebral Bore" }];
  assert.equal(pickArtist("cerebral bore", items)?.name, "Cerebral Bore");
  assert.equal(pickArtist("CATTLE DECAPITATION", items)?.name, "Cattle Decapitation");
  assert.equal(pickArtist("Notarealband", items), null);
});

test("pickArtist tolerates empty / garbage input", () => {
  assert.equal(pickArtist("x", null), null);
  assert.equal(pickArtist("x", []), null);
  assert.equal(pickArtist("x", [null, { name: "y" }]), null);
});

test("googleSearch points at a Google query for '<name> bandcamp', url-encoded", () => {
  const u = googleSearch("Cerebral Bore");
  assert.match(u, /^https:\/\/www\.google\.com\/search\?q=/);
  assert.ok(u.includes("Cerebral%20Bore%20bandcamp"));
  assert.ok(googleSearch("A&B").includes("A%26B"));
});

test("linkResult prefers a direct Spotify url, primary = spotify", () => {
  const r = linkResult("Devourment", "https://open.spotify.com/artist/abc");
  assert.equal(r.spotify, "https://open.spotify.com/artist/abc");
  assert.deepEqual(r.primary, { platform: "spotify", url: "https://open.spotify.com/artist/abc" });
  assert.equal(r.google, undefined);
});

test("linkResult falls back to Google->Bandcamp when there is no direct Spotify url", () => {
  const r = linkResult("Some Local Band", null);
  assert.equal(r.spotify, undefined);
  assert.equal(r.primary.platform, "google");
  assert.match(r.primary.url, /^https:\/\/www\.google\.com\/search\?q=/);
  assert.equal(r.google, r.primary.url);
});

test("linkResult rejects non-http(s) / search Spotify urls and falls back to Google", () => {
  for (const bad of ["javascript:alert(1)", "ftp://x/y", "https://open.spotify.com/search/X", "not a url"]) {
    const r = linkResult("X", bad);
    assert.equal(r.primary.platform, "google", `expected fallback for ${bad}`);
  }
});

test("isSearchUrl detects /search urls", () => {
  assert.equal(isSearchUrl("https://open.spotify.com/search/X"), true);
  assert.equal(isSearchUrl("https://open.spotify.com/artist/abc"), false);
});

test("isHttpUrl accepts http/https only", () => {
  assert.equal(isHttpUrl("https://x.com"), true);
  assert.equal(isHttpUrl("http://x.com"), true);
  assert.equal(isHttpUrl("javascript:alert(1)"), false);
  assert.equal(isHttpUrl("ftp://x/y"), false);
  assert.equal(isHttpUrl("not a url"), false);
  assert.equal(isHttpUrl(null), false);
});