import { reverse } from './object'
/**
 * 会触发字符改变的键
 */
export const charKey = {
  // 英文字母
  a: 65,
  b: 66,
  c: 67,
  d: 68,
  e: 69,
  f: 70,
  g: 71,
  h: 72,
  i: 73,
  j: 74,
  k: 75,
  l: 76,
  m: 77,
  n: 78,
  o: 79,
  p: 80,
  q: 81,
  r: 82,
  s: 83,
  t: 84,
  u: 85,
  v: 86,
  w: 87,
  x: 88,
  y: 89,
  z: 90,

  // 主键盘数字键
  '0': 48,
  '1': 49,
  '2': 50,
  '3': 51,
  '4': 52,
  '5': 53,
  '6': 54,
  '7': 55,
  '8': 56,
  '9': 57,

  // 主键盘几个特殊字符
  '`': 192,
  '+': 187,
  '-': 189,
  '=': 61,
  '[': 219,
  ']': 221,
  '\\': 220,
  ';': 59,
  '\'': 222,
  ',': 188,
  '.': 190,
  '/': 191,

  // 小键盘（统一加前缀 $）
  '$0': 96,
  '$1': 97,
  '$2': 98,
  '$3': 99,
  '$4': 100,
  '$5': 101,
  '$6': 102,
  '$7': 103,
  '$8': 104,
  '$9': 105,
  '$.': 110,
  '$+': 107,
  '$-': 109,
  '$*': 106,
  '$/': 111,

  space: 32,
  tab: 9
}

/**
* 删除键
*/
export const deleteKey = {
  backspace: 8,
  'delete': 46
}

/**
* 功能键
*/
export const functionKey = {

  // F1 -> F12
  f1: 112,
  f2: 113,
  f3: 114,
  f4: 115,
  f5: 116,
  f6: 117,
  f7: 118,
  f8: 119,
  f9: 120,
  f10: 121,
  f11: 122,
  f12: 123,

  // 常用的控制键
  enter: 13,
  esc: 27,
  capslock: 20,

  insert: 45,
  home: 36,
  end: 35,
  pageup: 33,
  pagedown: 34,

  // 方向键
  left: 37,
  right: 39,
  up: 38,
  down: 40
}

/**
* 常用的组合按键
*/
export const combinationKey = {
  shift: 16,
  ctrl: 17,
  meta: 91,
  alt: 18
}


export const keyChar: Record<number, string> = reverse(charKey)
export const keyDelete: Record<number, string> = reverse(deleteKey)
export const keyFunction: Record<number, string> = reverse(functionKey)
export const keyCombination: Record<number, string> = reverse(combinationKey)

export function isCharKey(keyCode: number) {
  return keyCode in keyChar
}

export function isDeleteKey(keyCode: number) {
  return keyCode in keyDelete
}

export function isFunctionKey(keyCode: number) {
  return keyCode in keyFunction
}

export function isCombinationKey(keyCode: number) {
  return keyCode in keyCombination
}