(doc => {

const
	qUri = path => doc.location.pathname.replace(/\/+$/,'') + '/?/' + path,
	eId = id => doc.getElementById('rl-'+id),
	app = eId('app'),
	admin = app && '1' == app.dataset.admin,
	layout = doc.cookie.match(/(^|;) ?rllayout=([^;]+)/) || '',

	showError = msg => {
		let div = eId('loading-error');
		div.append(msg);
		eId('loading').hidden = true;
		div.hidden = false;
	},

	loadScript = src => {
		if (!src) {
			throw new Error('src should not be empty.');
		}
		return new Promise((resolve, reject) => {
			const script = doc.createElement('script');
			script.onload = () => resolve();
			script.onerror = () => reject('Failed loading ' + src);
			script.src = src;
//			script.async = true;
			doc.head.append(script);
		});
	};

try {
	let smctoken = doc.cookie.match(/(^|;) ?smctoken=([^;]+)/);
	smctoken = smctoken ? smctoken[2] : localStorage.getItem('smctoken');
	if (!smctoken) {
		let data = new Uint8Array(16);
		crypto.getRandomValues(data);
		smctoken = encodeURIComponent(btoa(String.fromCharCode(...data)));
	}
	localStorage.setItem('smctoken', smctoken);
//	doc.cookie = `smctoken=${smctoken};path=${doc.location.pathname};samesite=strict;secure";
//	doc.cookie = 'smctoken='+smctoken+";path=/;samesite=lax";
	doc.cookie = 'smctoken='+smctoken+";path=/;samesite=strict";
} catch (e) {
	console.error(e);
}

let RL_APP_DATA = {};

doc.documentElement.classList.toggle('rl-mobile', 'mobile' === layout[2] || (!layout && 1000 > innerWidth));

window.rl = {
	adminArea: () => admin,

	settings: {
		get: name => RL_APP_DATA[name],
		set: (name, value) => RL_APP_DATA[name] = value,
		app: name => RL_APP_DATA.System[name]
	},

	setTitle: title =>
		doc.title = (title || '') + (RL_APP_DATA.Title ? (title ? ' - ' : '') + RL_APP_DATA.Title : ''),

	initData: appData => {
		RL_APP_DATA = appData;
		const url = appData.StaticLibsJs,
			cb = () => rl.app.bootstart();
		loadScript(url)
			.then(() => loadScript(url.replace('/libs.', `/${admin?'admin':'app'}.`)))
			.then(() => appData.PluginsLink ? loadScript(qUri(appData.PluginsLink)) : Promise.resolve())
			.then(() => rl.app
					? cb()
					: doc.addEventListener('readystatechange', () => 'complete' == doc.readyState && cb())
			)
			.catch(e => {
				showError(e);
				throw e;
			});
	},

	setData: appData => {
		RL_APP_DATA = appData;
		rl.app.refresh();
	},

	loadScript: loadScript
};

if (!navigator.cookieEnabled) {
	eId('loading').hidden = true;
	eId('NoCookie').hidden = false;
} else if (![].flat) {
	eId('loading').hidden = true;
	eId('BadBrowser').hidden = false;
} else {
	loadScript(qUri(`${admin ? 'Admin' : ''}AppData/0/${Math.random().toString().slice(2)}/`))
	.catch(e => showError(e));
}

})(document);