// TODO: Move other calculations here

export const avg = (values: number[]) =>

  values.reduce((a, b) => a + b, 0) / values.length;

export const formatHours = (hours: number): string => {

  let h = Math.floor(hours);

  let m = Math.round((hours - h) * 60);

  // Rounding to the nearest minute can land on 60; carry it into the hour

  if (m === 60) {

    h += 1;

    m = 0;

  }

  if (m === 0) return `${h}h`;

  return `${h}h ${m}min`;

}

export const formatDiff = (minutes: number): string => {

  const abs = Math.abs(minutes);

  const h = Math.floor(abs / 60);

  const m = abs % 60;

  const sign = minutes > 0 ? "+" : "-";

  if (h === 0) return `${sign}${m}min`;

  if (m === 0) return `${sign}${h}h`;

  return `${sign}${h}h ${m}min`;

}

export const paginate = (

  page: number,

  limit: number,

  total: number,

): { page: number; skip: number; nextPage: number | null } => {

  const skip = (page - 1) * limit;

  const totalPages = Math.ceil(total / limit);

  return {

    page,

    skip,

    nextPage: page < totalPages ? page + 1 : null,

  };

}

export const timeToCron = (time: string): string => {

  const [hour, minute] = time.split(":").map(Number);

  return `${minute} ${hour} * * *`;

}