const randomChars = () => {
  const uppercaseAsciiStart = 65;
  const letterIndex = Math.floor(Math.random() * 26);
  const letter = String.fromCharCode(uppercaseAsciiStart + letterIndex);

  return letter;
};

const generateNumberPlate = () => {
  const numberPlateLetters = new Array(4);
  const characters: string[] = [];
  for (let index = 0; index <= numberPlateLetters.length; index++) {
    const letter = randomChars();
    characters.push(letter);
  }
  const number = Math.floor(Math.random() * 99);
  characters.splice(2, 0, number + " ");
  const numberPlate = characters.join("");

  return numberPlate;
};

export const generateNumberPlateList = (numberofSightings = 5) => {
  const numberPlates = [];

  for (let i = 0; i <= numberofSightings; i++) {
    numberPlates.push(generateNumberPlate());
  }

  return numberPlates;
};

export const formatNumberPlate = (plate: string) => {
  const splittedPlate = plate?.split("");
  splittedPlate?.splice(4, 0, " ");
  const formattedPlate = splittedPlate?.join("");
  return formattedPlate;
};