import { ArrayBuffers } from './ArrayBuffers';

export function toHexDump(data: BufferSource) {
	return Array.from(ArrayBuffers.toHex(data).match(/.{1,32}/g) ?? [])
		.map((v, i) => {
			let idxPrefix = `${i.toString(16).padStart(8, '0')}:`;
			let content = Array.from(v.match(/.{4}/g) ?? []).join(' ');
			let chars = Array.from(new Uint8Array(ArrayBuffers.fromHex(v).buffer)).map((v) => {
				let c = String.fromCharCode(v);
				if (v < 32 || v > 126) {
					c = '.';
				}
				return c;
			});
			return [idxPrefix, content.padEnd(40, ' '), chars.join('')].join(' ');
		})
		.join('\n');
}

/**
 * Chrome Websocket Binary format
 * ```
 * 00000000: 0000 0000 0000 0000 0000 0000 0000 0000  ................
 * ```
 */
export function fromHexDump(dump: string) {
	return ArrayBuffers.fromHex(
		dump
			.split('\n')
			.map((v) => {
				return v
					.substring(10, 10 + 41)
					.split(' ')
					.join('');
			})
			.join(''),
	);
}