/*
 * Get a DOM element from a class name:
 */
export const getNode = (className: string): HTMLElement => {
  const selector = `.${className}`;

  return <HTMLElement>document.querySelector(selector);
};

export const stringToNode = (html: string): HTMLElement => {
  let wrapper: HTMLElement = document.createElement('div');
  wrapper.innerHTML = html.trim();

  return <HTMLElement>wrapper.firstChild;
};

export const insertAfter = (newNode: Node, referenceNode: Node) => {
  let nextNode = referenceNode.nextSibling;
  let parentNode = referenceNode.parentNode;

  parentNode.insertBefore(newNode, nextNode);
};

export const removeNode = (node: Node) => {
  node.parentElement.removeChild(node);
};

export const throwErr = (message: string) => {
  // Remove multiple spaces:
  message = message.replace(/ +(?= )/g,'');
  message = message.trim();

  throw `SweetAlert: ${message}`;
};

/*
 * Match plain objects ({}) but NOT null
 */
export const isPlainObject = (value: any): boolean => {
  if (Object.prototype.toString.call(value) !== '[object Object]') {
    return false;
  } else {
    var prototype = Object.getPrototypeOf(value);
    return prototype === null || prototype === Object.prototype;
  }
};

/*
 * Take a number and return a version with ordinal suffix
 * Example: 1 => 1st
 */
export const ordinalSuffixOf = (num: number): string => {
  let j = num % 10;
  let k = num % 100;

  if (j === 1 && k !== 11) {
    return `${num}st`;
  }

  if (j === 2 && k !== 12) {
    return `${num}nd`;
  }

  if (j === 3 && k !== 13) {
    return `${num}rd`;
  }

  return `${num}th`;
};