import { env } from '$env/dynamic/public';

export const cdn = (urlString: string | undefined) => {
	if (!urlString || !['http', 'https'].some((protocol) => urlString.startsWith(protocol)))
		return urlString;

	return env.PUBLIC_ANILIST_REDIRECT_URI?.includes('localhost') ||
		[
			'api.telegram.org',
			'telegra.ph',
			't.me',
			'discord.com',
			'cdn.discordapp.com',
			'media.discordapp.net',
			'images-ext-1.discordapp.net',
			'images-ext-2.discordapp.net',
			'media.trace.moe'
		].includes(new URL(urlString).hostname)
		? urlString
		: `https://cdn.due.moe?url=${encodeURIComponent(urlString)}`;
};

export default cdn;