export function deepCopy(target) {
  if (typeof target === 'object') {
    const result = Array.isArray(target) ? [] : {}
    for (const key in target) {
      if (typeof target[key] === 'object') {
        result[key] = deepCopy(target[key])
      } else {
        result[key] = target[key]
      }
    }

    return result
  }

  return target
}

export function swap(arr, i, j) {
  console.log('before:' + i + '-->' + j + JSON.stringify(arr))
  const temp = arr[i]
  arr[i] = arr[j]
  arr[j] = temp
  console.log('after:' + JSON.stringify(arr))
}

export function moveUp(arr, i) {
  arr.splice(i + 1, 0, arr.splice(i, 1)[0])
}

export function moveDown(arr, i) {
  arr.splice(i, 0, arr.splice(i - 1, 1)[0])
}

export function toTop(arr, i, j) {
  arr.push(arr.splice(i, 1)[0])
}

export function toBottom(arr, i) {
  arr.unshift(arr.splice(i, 1)[0])
 }
export function $(selector) {
  return document.querySelector(selector)
}