waseel/lib/utils.ts

import { tr } from "@/lib/i18n";
import type { Ride } from "@/types/type";

export const sortRides = (rides: Ride[]): Ride[] => {
  return [...rides].sort(
    (a, b) =>
      new Date(b.created_at).getTime() - new Date(a.created_at).getTime(),
  );
};

// Unit words and month names are localized through the module-level translator
// in lib/i18n (set by I18nProvider). Until the provider boots, `tr` falls back
// to English, so these stay safe to call during the initial render.
export function formatTime(minutes: number): string {
  const formattedMinutes = Math.round(minutes) || 0;

  if (formattedMinutes < 60) {
    return tr("units.min", {}, formattedMinutes);
  }

  const hours = Math.floor(formattedMinutes / 60);
  const remainingMinutes = formattedMinutes % 60;

  return tr("units.hoursMinutes", { h: hours, m: remainingMinutes });
}

export function formatDate(dateString: string): string {
  const date = new Date(dateString);
  const day = date.getDate();
  const monthKeys = [
    "months.jan",
    "months.feb",
    "months.mar",
    "months.apr",
    "months.may",
    "months.jun",
    "months.jul",
    "months.aug",
    "months.sep",
    "months.oct",
    "months.nov",
    "months.dec",
  ];
  const month = tr(monthKeys[date.getMonth()]);
  const year = date.getFullYear();

  return `${day < 10 ? "0" + day : day} ${month} ${year}`;
}

// Normalizes a Lebanese phone number to E.164 (+961...).
export function normalizePhone(raw: string): string {
  const cleaned = raw.replace(/[^\d+]/g, "");

  if (cleaned.startsWith("+")) return cleaned;

  return `+961${cleaned.replace(/^0+/, "")}`;
}

/**
 * A lat/lng box that fully contains a circle of `radiusMeters` around a point.
 *
 * Used as a cheap first pass before the exact great-circle test: the box is
 * something an index can answer, so the database only hands back the handful
 * of rows worth measuring properly. It over-selects at the corners, which is
 * why callers still filter with `haversine` afterwards.
 */
export function boundingBox(
  latitude: number,
  longitude: number,
  radiusMeters: number,
): { minLat: number; maxLat: number; minLng: number; maxLng: number } {
  // A degree of latitude is ~111.32 km everywhere; a degree of longitude
  // shrinks with the cosine of the latitude. The cos is floored so the box
  // stays finite near the poles instead of dividing by zero.
  const latDelta = radiusMeters / 111_320;
  const lngDelta =
    radiusMeters /
    (111_320 * Math.max(Math.cos((latitude * Math.PI) / 180), 0.01));

  return {
    minLat: latitude - latDelta,
    maxLat: latitude + latDelta,
    minLng: longitude - lngDelta,
    maxLng: longitude + lngDelta,
  };
}

// Great-circle distance between two lat/lng points, in meters. Used for
// nearest-driver matching and "X m away" POI chips. Haversine formula.
export function haversine(
  lat1: number,
  lng1: number,
  lat2: number,
  lng2: number,
): number {
  const R = 6371000; // Earth radius, meters
  const toRad = (d: number) => (d * Math.PI) / 180;
  const dLat = toRad(lat2 - lat1);
  const dLng = toRad(lng2 - lng1);
  const a =
    Math.sin(dLat / 2) ** 2 +
    Math.cos(toRad(lat1)) * Math.cos(toRad(lat2)) * Math.sin(dLng / 2) ** 2;
  return 2 * R * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
}