import test from 'node:test';
import assert from 'node:assert/strict';

import {
	getLauncherAction,
	inferLauncherMediaType,
	readLauncherMediaConfig
} from '../vr180player/launcher/launcher-config.js';

function createLauncher({ attributes = {}, dataset = {} } = {}) {
	return {
		dataset,
		getAttribute(name) {
			return attributes[name] ?? '';
		}
	};
}

test('getLauncherAction opens immersive only when immersive VR is supported', () => {
	assert.equal(getLauncherAction(true), 'immersive');
	assert.equal(getLauncherAction(false), 'fallback-modal');
});

test('inferLauncherMediaType detects common image and video extensions', () => {
	assert.equal(inferLauncherMediaType('https://cdn.example.com/demo.png'), 'image');
	assert.equal(inferLauncherMediaType('/media/demo.JPG?cache=1'), 'image');
	assert.equal(inferLauncherMediaType('/media/demo.webm'), 'video');
	assert.equal(inferLauncherMediaType('/media/demo.mp4#clip'), 'video');
	assert.equal(inferLauncherMediaType('/media/demo'), null);
});

test('readLauncherMediaConfig reads explicit launcher data', () => {
	const config = readLauncherMediaConfig(createLauncher({
		dataset: {
			crossorigin: 'anonymous',
			headLock: 'position',
			mediaType: 'video',
			poster: '/poster.jpg',
			preload: 'auto',
			projection: 'plane',
			src: '/media/demo',
			title: 'Demo Video',
			type: 'video/mp4'
		}
	}));

	assert.deepEqual(config, {
		carousel: false,
		crossOrigin: 'anonymous',
		headLockMode: 'position',
		mediaType: 'video',
		poster: '/poster.jpg',
		preload: 'auto',
		projectionMode: 'plane',
		src: '/media/demo',
		srcs: ['/media/demo'],
		title: 'Demo Video',
		type: 'video/mp4'
	});
});

test('readLauncherMediaConfig infers defaults from data-src and aria-label', () => {
	const config = readLauncherMediaConfig(createLauncher({
		attributes: {
			'aria-label': 'Demo Image'
		},
		dataset: {
			src: '/media/demo-image.webp'
		}
	}));

	assert.equal(config.mediaType, 'image');
	assert.equal(config.projectionMode, 'vr180');
	assert.equal(config.headLockMode, 'auto');
	assert.equal(config.preload, 'metadata');
	assert.equal(config.carousel, false);
	assert.deepEqual(config.srcs, ['/media/demo-image.webp']);
	assert.equal(config.title, 'Demo Image');
});

test('readLauncherMediaConfig supports image carousel launchers', () => {
	const config = readLauncherMediaConfig(createLauncher({
		dataset: {
			carousel: '',
			mediaType: 'image',
			projection: 'plane',
			src: '/media/first.png, /media/second.png',
			title: 'Demo Carousel'
		}
	}));

	assert.equal(config.carousel, true);
	assert.equal(config.mediaType, 'image');
	assert.equal(config.projectionMode, 'plane');
	assert.equal(config.src, '/media/first.png');
	assert.deepEqual(config.srcs, ['/media/first.png', '/media/second.png']);
});

test('readLauncherMediaConfig rejects missing source or unsupported values', () => {
	assert.equal(readLauncherMediaConfig(createLauncher()), null);
	assert.equal(readLauncherMediaConfig(createLauncher({ dataset: { projection: 'cube', src: '/media/demo.png' } })), null);
	assert.equal(readLauncherMediaConfig(createLauncher({ dataset: { headLock: 'bad', src: '/media/demo.png' } })), null);
	assert.equal(readLauncherMediaConfig(createLauncher({ dataset: { mediaType: 'audio', src: '/media/demo.png' } })), null);
	assert.equal(readLauncherMediaConfig(createLauncher({ dataset: { src: '/media/demo' } })), null);
	assert.equal(readLauncherMediaConfig(createLauncher({ dataset: { carousel: '', mediaType: 'video', src: '/media/demo.mp4, /media/other.mp4' } })), null);
	assert.equal(readLauncherMediaConfig(createLauncher({ dataset: { carousel: '', src: '/media/demo.png' } })), null);
	assert.equal(readLauncherMediaConfig(createLauncher({ dataset: { src: '/media/first.png, /media/second.png' } })), null);
});