import { customObject } from "../type";
export const forEach = (obj: customObject, callback: (key: string, value: any) => void) => {
  Object.keys(obj).forEach((key) => {
    callback(key, obj[key]);
  });
};

const _keys: string[] = ["Ctrl", "Control", "^", "⇧", "Shift", "⌥", "Alt", "Option", "⌘", "Command"];
// const _modify: customObject = {
//   "⇧": 16,
//   Shift: 16,
//   "⌥": 18,
//   Alt: 18,
//   Option: 18,
//   "⌃": 17,
//   Ctrl: 17,
//   Control: 17,
//   "⌘": 91,
//   Command: 91,
// };

export const isExit = (keys: string[]): boolean => {
  for (let i = 0; i < _keys.length; i++) {
    if (keys.includes(_keys[i])) {
      return true;
    }
  }
  return false;
};

export function capitalFirstLetter(str: string): string {
  return str.slice(0, 1).toUpperCase() + str.slice(1).toLowerCase();
}
// @ts-ignore
export const isEqual = (_key, _value, isComposition: boolean): boolean => {
  const { altKey, ctrlKey, shiftKey } = _key,
    { keyCode, value, key, compositionKeys } = _value;
  let str = `${ctrlKey ? "Ctrl+" : ""}${shiftKey ? "Shift+" : ""}${altKey ? "Alt+" : ""}${key}`;
  const ret = str === compositionKeys && keyCode === value && isComposition;
  return ret;
};
// TODO: 优化缓存策略 使用闭包 减少计算
export const isMatchEvent = (e: KeyboardEvent, keys: number[], compositionKeys:string = ""): boolean => {
  // console.log(e);
  let key = capitalFirstLetter(e.key),
    value = keys[0],
    keyCode = e.keyCode,
    _compositionKeys = compositionKeys.split("+") || [];

  if (keyCode == 93 || keyCode == 224) keyCode = 91; // right command on webkit, command on Gecko

  const _key = {
    altKey: e.altKey,
    ctrlKey: e.ctrlKey || e.metaKey,
    shiftKey: e.shiftKey,
  };
  // 组合键
  if (isExit(_compositionKeys)) {
    const _value = {
      keyCode,
      value,
      key,
      compositionKeys,
    };

    if (isEqual(_key, _value, _compositionKeys.length > 1)) return true;

    return false;
  }

  if(_key.altKey || _key.ctrlKey || _key.shiftKey) return false;
  // 单键
  if (keyCode === value) {
    return true;
  }

  return false;
}

const capitalFirstLetterRegex = /((^[A-Z]{1})|\d).*/;
export const validateCompositionKey = (compositionKeys: string): boolean => {
  const str = compositionKeys.split("+");
  for (const s of str) {
    if (!capitalFirstLetterRegex.test(s)) {
      return false;
    }
  }
  return true;
};