status-monitor/ui/src/services/utils.ts

import { UptimeMessage } from "@/services/types";

export function isAgentOnline(data: UptimeMessage): boolean {
    const timeDiff = new Date().getTime() - new Date(data.last_seen).getTime();

    return timeDiff < 10000;
}

export function formatRelativeTime(timestamp: string): string {
    const now = new Date();
    const past = new Date(timestamp);
    const diffInSeconds = Math.floor((now.getTime() - past.getTime()) / 1000);

    if (diffInSeconds < 5) {
        return "now";
    } else if (diffInSeconds < 60) {
        return `${diffInSeconds}s ago`;
    } else if (diffInSeconds < 3600) {
        const minutes = Math.floor(diffInSeconds / 60);
        return `${minutes}m ago`;
    } else if (diffInSeconds < 86400) {
        const hours = Math.floor(diffInSeconds / 3600);
        return `${hours}h ago`;
    } else {
        const days = Math.floor(diffInSeconds / 86400);
        return `${days}d ago`;
    }
}

export function formatBytes(bytes: number | undefined): string {
    if (!bytes || bytes === 0) return "0 B";

    const k = 1024;
    const sizes = ["B", "KB", "MB", "GB", "TB"];
    const i = Math.floor(Math.log(bytes) / Math.log(k));

    return `${parseFloat((bytes / Math.pow(k, i)).toFixed(1))} ${sizes[i]}`;
}

export function calcPercentage(
    value: number | undefined,
    total: number | undefined,
): number {
    if (value === undefined || total === undefined) return 0;
    return (value / total) * 100;
}

export function formatPercentage(val: number | undefined) {
    return `${(val ?? 0).toFixed(2)}%`;
}