assessment-model/src/app/utils.ts

export const serializeBigInt = (_: any, value: any): string | any => {
  // Simple utility function to convert BigInts to strings with JSON.stringify
  return typeof value === "bigint" ? value.toString() : value;
};

export function sapToEpc(sapPoints: number): string {
  if (sapPoints <= 0 || sapPoints > 100) {
    throw new Error("SAP points should be between 1 and 100.");
  }

  if (sapPoints > 91) {
    return "A";
  } else if (sapPoints > 80) {
    return "B";
  } else if (sapPoints > 69) {
    return "C";
  } else if (sapPoints > 55) {
    return "D";
  } else if (sapPoints > 39) {
    return "E";
  } else if (sapPoints > 21) {
    return "F";
  } else {
    return "G";
  }
}

export function formatDateTime(dateTimeString: string): string {
  // Create a new Date object
  const dateTime = new Date(dateTimeString);

  // Get the various parts of the date
  const options: Intl.DateTimeFormatOptions = {
    year: "numeric",
    month: "long",
    day: "numeric",
    hour: "2-digit",
    minute: "2-digit",
  };
  return dateTime.toLocaleDateString("en-GB", options);
}

export function formatNumber(number: number): string {
  if (number === 0) {
    return "0";
  }

  const suffixes: string[] = ["", "k", "m", "b", "t"];
  const suffixIndex: number = Math.floor(Math.log10(Math.abs(number)) / 3);

  // Check if the suffix index is within the available suffixes
  if (suffixIndex >= suffixes.length) {
    return number.toString(); // Return the number as is
  }

  // Check if the number is smaller and round to 2 decimal places
  const roundedNumber: number =
    Math.abs(number) < 1000
      ? Number(number.toFixed(2))
      : Number(number.toPrecision(4));

  const formattedNumber: string = (
    roundedNumber / Math.pow(1000, suffixIndex)
  ).toString();

  return formattedNumber + suffixes[suffixIndex];
}

export function roundToDecimalPlaces(
  number: number,
  decimalPlaces: number
): number {
  const factor = 10 ** decimalPlaces;
  return Math.round(number * factor) / factor;
}