export const getNumber = (name: string) => {
  const charactersArray = Array.from(name);
  let charactersCodesSum = 0;

  charactersArray.forEach((charactersArrayItem) => {
    return (charactersCodesSum += charactersArrayItem.charCodeAt(0));
  });

  return charactersCodesSum;
};

export const getModulus = (num: number, max: number) => {
  return num % max;
};

export const getDigit = (number: number, ntn: number) => {
  return Math.floor((number / Math.pow(10, ntn)) % 10);
};

export const getBoolean = (number: number, ntn: number) => {
  return !(getDigit(number, ntn) % 2);
};

export const getAngle = (x: number, y: number) => {
  return (Math.atan2(y, x) * 180) / Math.PI;
};

export const getUnit = (number: number, range: number, index?: number) => {
  let value = number % range;

  if (index && getDigit(number, index) % 2 === 0) {
    return -value;
  } else return value;
};

export const getRandomColor = (number: number, colors: string[], range: number) => {
  return colors[number % range];
};

export const getContrast = (hexcolor: string) => {
  // If a leading # is provided, remove it
  if (hexcolor.slice(0, 1) === '#') {
    hexcolor = hexcolor.slice(1);
  }

  // Convert to RGB value
  var r = parseInt(hexcolor.substr(0, 2), 16);
  var g = parseInt(hexcolor.substr(2, 2), 16);
  var b = parseInt(hexcolor.substr(4, 2), 16);

  // Get YIQ ratio
  var yiq = (r * 299 + g * 587 + b * 114) / 1000;

  // Check contrast
  return yiq >= 128 ? 'black' : 'white';
};

// Source
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/random#getting_a_random_integer_between_two_values
function getRandomInt(min: number, max: number) {
  min = Math.ceil(min);
  max = Math.floor(max);
  return Math.floor(Math.random() * (max - min) + min); // The maximum is exclusive and the minimum is inclusive
}

export const getRandomId = (): string => {
    const array = [...Array(8)].map(() => getRandomInt(0, 255));
    return array.toString();
}