import test from 'node:test';
import assert from 'node:assert/strict';
import {
	createMediaAdapter,
	VideoMediaAdapter
} from '../vr180player/media/media-adapter.js';

function createVideo({
	ended = false,
	paused = false,
	source = 'https://cdn.example.com/videos/demo-video.mp4',
	title = ''
} = {}) {
	return {
		classList: {
			values: [],
			add(value) {
				this.values.push(value);
			}
		},
		ended,
		loadCount: 0,
		paused,
		style: { display: '' },
		getAttribute(name) {
			return name === 'title' ? title : '';
		},
		load() {
			this.loadCount += 1;
		},
		querySelector(selector) {
			if (selector !== 'source' || !source) {
				return null;
			}

			return { src: source };
		}
	};
}

test('VideoMediaAdapter exposes video capabilities and lifecycle helpers', () => {
	const video = createVideo({ title: 'Demo Title' });
	const adapter = new VideoMediaAdapter(video);

	assert.deepEqual(adapter.capabilities, {
		audio: true,
		dynamicTexture: true,
		playback: true,
		timeline: true
	});
	assert.equal(adapter.element, video);
	assert.equal(adapter.textureSource, video);
	assert.equal(adapter.getTitle(), 'Demo Title');

	adapter.hideElement();
	assert.equal(video.style.display, 'none');

	adapter.showElement();
	assert.equal(video.style.display, '');

	adapter.load();
	assert.equal(video.loadCount, 1);
});

test('VideoMediaAdapter falls back to source filename and tracks texture update state', () => {
	const video = createVideo({ source: 'https://cdn.example.com/media/flat-sbs-demo.mp4' });
	const adapter = new VideoMediaAdapter(video);

	assert.equal(adapter.getTitle(), 'flat sbs demo');
	assert.equal(adapter.shouldUpdateTexture(), true);

	video.paused = true;
	assert.equal(adapter.shouldUpdateTexture(), false);

	video.paused = false;
	video.ended = true;
	assert.equal(adapter.shouldUpdateTexture(), false);
});

test('createMediaAdapter finds and marks the supported video element', () => {
	const video = createVideo();
	const playerContainer = {
		querySelector(selector) {
			return selector === 'video' ? video : null;
		}
	};

	const adapter = createMediaAdapter(playerContainer);

	assert.ok(adapter instanceof VideoMediaAdapter);
	assert.equal(adapter.element, video);
	assert.deepEqual(video.classList.values, ['vrwp-video']);
});