import ArrayList from './ArrayList'

/**
 * @see http://download.oracle.com/javase/6/docs/api/java/util/Arrays.html
 *
 * @constructor
 * @private
 */
export default class Arrays {
  static sort () {
    const a = arguments[0]
    let i
    let t
    let comparator
    let compare
    if (arguments.length === 1) {
      compare = function (a, b) {
        return a.compareTo(b)
      }
      a.sort(compare)
    } else if (arguments.length === 2) {
      comparator = arguments[1]
      compare = function (a, b) {
        return comparator['compare'](a, b)
      }
      a.sort(compare)
    } else if (arguments.length === 3) {
      t = a.slice(arguments[1], arguments[2])
      t.sort()
      var r = a.slice(0, arguments[1]).concat(t, a.slice(arguments[2], a.length))
      a.splice(0, a.length)
      for (i = 0; i < r.length; i++) {
        a.push(r[i])
      }
    } else if (arguments.length === 4) {
      t = a.slice(arguments[1], arguments[2])
      comparator = arguments[3]
      compare = function (a, b) {
        return comparator['compare'](a, b)
      }
      t.sort(compare)
      r = a.slice(0, arguments[1]).concat(t, a.slice(arguments[2], a.length))
      a.splice(0, a.length)
      for (i = 0; i < r.length; i++) {
        a.push(r[i])
      }
    }
  }
  /**
   * @param {Array} array
   * @return {ArrayList}
   */
  static asList (array) {
    var arrayList = new ArrayList()
    for (var i = 0, len = array.length; i < len; i++) {
      arrayList.add(array[i])
    }
    return arrayList
  }
}