const assert = require('node:assert/strict');
const test = require('node:test');
const capabilities = require('./player-capabilities.js');
const type = 'video/mp4; codecs="avc1.42C01F, mp4a.40.2"';
function mse(supported) {class MediaSource {} MediaSource.isTypeSupported = () => supported; return {MediaSource};}
const native = {canPlayType: () => 'probably'}, absent = {canPlayType: () => ''};
test('iPhone and desktop-mode iPad prefer native HLS even when MSE claims support', () => {
  for (const agent of [{userAgent:'iPhone Safari'}, {userAgent:'iPad CriOS'}, {platform:'MacIntel',maxTouchPoints:5}]) {
    assert.equal(capabilities(mse(true), native, agent).choose(type), 'hls');
    assert.equal(capabilities({}, absent, agent).choose(type), 'hls');
  }
});
test('desktop MSE, native-only, and unsupported browsers are distinguished', () => {
  assert.equal(capabilities(mse(true), native, {}).choose(type),'mse');
  assert.equal(capabilities(mse(false), native, {}).choose(type),'hls');
  assert.equal(capabilities({}, absent, {}).choose(type),'');
  assert.equal(capabilities(mse(true), absent, {platform:'MacIntel',maxTouchPoints:0}).choose(type),'mse');
});
test('broken capability probes cannot prevent native HLS', () => {
  const environment=mse(true);environment.MediaSource.isTypeSupported=()=>{throw new Error('probe failed');};
  assert.equal(capabilities(environment,native,{}).choose(type),'hls');
  assert.equal(capabilities({MediaSource:{}},native,{}).choose(type),'hls');
  assert.equal(capabilities({}, {canPlayType:()=> 'no'}, {}).choose(type),'');
});

test('remux requires compatible H.264 profiles and never replaces iOS HLS', () => {
  assert.equal(capabilities(mse(true), native, {}).remux(), true);
  assert.equal(capabilities(mse(false), native, {}).remux(), false);
  assert.equal(capabilities(mse(true), native, {userAgent:'iPhone Safari'}).remux(), false);
  const limited = mse(true);
  limited.MediaSource.isTypeSupported = type => type.includes('42E0');
  assert.equal(capabilities(limited, absent, {}).remux(), false);
  limited.MediaSource.isTypeSupported = () => {throw new Error('probe unavailable');};
  assert.equal(capabilities(limited, native, {}).remux(), false);
});

test('third-party iOS browsers hide native HLS so the server plans the TS path', () => {
  for (const ua of ['iPhone CriOS/154.0.8037.41 Mobile/15E148 Safari/604.1',
      'iPhone FxiOS/130.0 Mobile/15E148 Safari/605.1.15',
      'iPhone EdgiOS/130.0.1 Mobile/15E148 Safari/605.1.15']) {
    const view = capabilities(mse(true), native, {userAgent: ua});
    assert.equal(view.describe().nativeHls, false);
    assert.equal(view.choose(type), 'hls');
  }
  const safari = capabilities(mse(true), native, {userAgent: 'iPhone Version/27.0 Mobile/15E148 Safari/604.1'});
  assert.equal(safari.describe().nativeHls, true);
  const opera = capabilities(mse(true), native, {userAgent: 'iPhone OPT/2.4.0 Mobile/15E148 Safari/605.1.15'});
  assert.equal(opera.describe().nativeHls, false);
});