"use client";

import type { AuditFilterKey } from "@/features/groups/components/group-settings.types";

export function formatInviteExpiry(expiresAt: string) {
    const expiry = new Date(expiresAt).getTime();
    if (Number.isNaN(expiry)) return "Unknown";
    const diffMs = expiry - Date.now();
    const absMs = Math.abs(diffMs);
    const minute = 60 * 1000;
    const hour = 60 * minute;
    const day = 24 * hour;
    const pick = (value: number, unit: string) => `${value} ${unit}${value === 1 ? "" : "s"}`;
    let label = "";

    if (absMs < hour) {
        const value = Math.max(1, Math.round(absMs / minute));
        label = pick(value, "minute");
    } else if (absMs < day) {
        const value = Math.max(1, Math.round(absMs / hour));
        label = pick(value, "hour");
    } else {
        const value = Math.max(1, Math.round(absMs / day));
        label = pick(value, "day");
    }

    return diffMs >= 0 ? `in ${label}` : `${label} ago`;
}

export function isInviteExpired(expiresAt: string) {
    const expiry = new Date(expiresAt).getTime();
    if (Number.isNaN(expiry)) return false;
    return Date.now() > expiry;
}

export function eventCategory(eventType: string): AuditFilterKey {
    const upper = eventType.toUpperCase();
    if (upper.includes("SPENDING") || upper.includes("ENTRY")) return "entries";
    if (upper.includes("TAG")) return "tags";
    if (upper.includes("SETTING") || upper.includes("RENAMED")) return "settings";
    return "members";
}