function encode(input: Uint8Array) {
	const keyStr = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
	let output = '';
	let chr1, chr2, chr3, enc1, enc2, enc3, enc4;
	let i = 0;

	while (i < input.length) {
		chr1 = input[i++];
		chr2 = i < input.length ? input[i++] : Number.NaN; // Not sure if the index
		chr3 = i < input.length ? input[i++] : Number.NaN; // checks are needed here

		enc1 = chr1 >> 2;
		enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
		enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
		enc4 = chr3 & 63;

		if (isNaN(chr2)) {
			enc3 = enc4 = 64;
		} else if (isNaN(chr3)) {
			enc4 = 64;
		}
		output += keyStr.charAt(enc1) + keyStr.charAt(enc2) + keyStr.charAt(enc3) + keyStr.charAt(enc4);
	}
	return output;
}

export async function GET({ request, params }) {
	const response = await fetch('https://catapi.cf4.workers.dev/list');
	const asJson = await response.json();

	const resultcats = await Promise.all(
		asJson.map(async (cat) => {
			const catimage = await fetch(`https://catapi.cf4.workers.dev/${cat.key}`);
			const img = await catimage.arrayBuffer();

			const b64 = encode(new Uint8Array(img));
			return { ...cat, b64 };
		}),
	);

	return {
		status: response.status,
		body: {
			cats: response.ok && resultcats,
		},
	};
}