import { mongoDisplayName } from "$lib/utils/mongoUri";

export function formatBytes(bytes: number): string {
	if (bytes === 0) {
		return "0 B";
	}
	if (bytes < 1000) {
		return bytes + " B";
	}
	if (bytes < 1000000) {
		return (bytes / 1000).toFixed(2) + " kB";
	}
	if (bytes < 1000000000) {
		return (bytes / 1000000).toFixed(2) + " MB";
	}
	if (bytes < 1000000000000) {
		return (bytes / 1000000000).toFixed(2) + " GB";
	}
	return (bytes / 1000000000000).toFixed(2) + " TB";
}

export function formatNumber(num: number): string {
	return num.toLocaleString();
}

export function serverName(name: string): string {
	// Extract a short, friendly hostname from a MongoDB connection string.
	// Multi-host safe (mongos / replica-set URIs won't produce giant names).
	if (name.startsWith("mongodb://") || name.startsWith("mongodb+srv://")) {
		return mongoDisplayName(name);
	}
	return name;
}