import XLSX from 'xlsx'

import {validatenull} from './validate'

//表单序列化
export const serialize = data => {
  let list = [];
  Object.keys(data).forEach(ele => {list.push(`${ele}=${data[ele]}`)})
  return list.join('&');
};
export const getObjType = obj => {
  var toString = Object.prototype.toString;
  var map = {
    '[object Boolean]': 'boolean',
    '[object Number]': 'number',
    '[object String]': 'string',
    '[object Function]': 'function',
    '[object Array]': 'array',
    '[object Date]': 'date',
    '[object RegExp]': 'regExp',
    '[object Undefined]': 'undefined',
    '[object Null]': 'null',
    '[object Object]': 'object'
  };
  if (obj instanceof Element) {
    return 'element';
  }
  return map[toString.call(obj)];
};
export const getViewDom =
    () => {
      return window.document.getElementById('avue-view')
          .getElementsByClassName('el-scrollbar__wrap')[0]
    }
/**
 * 对象深拷贝
 */
export const deepClone = data => {
  var type = getObjType(data);
  var obj;
  if (type === 'array') {
    obj = [];
  } else if (type === 'object') {
    obj = {};
  } else {
    //不再具有下一层次
    return data;
  }
  if (type === 'array') {
    for (var i = 0, len = data.length; i < len; i++) {
      obj.push(deepClone(data[i]));
    }
  } else if (type === 'object') {
    for (var key in data) {
      obj[key] = deepClone(data[key]);
    }
  }
  return obj;
};
/**
 * 设置灰度模式
 */
export const toggleGrayMode = (status) => {
  if (status) {
    document.body.className = document.body.className + ' grayMode';
  } else {
    document.body.className = document.body.className.replace(' grayMode', '');
  }
};
/**
 * 设置主题
 */
export const setTheme =
    (name) => {
      document.body.className = name;
    }

/**
 * 加密处理
 */
export const encryption = (params) => {
  let {data, type, param, key} = params;
  let result = JSON.parse(JSON.stringify(data));
  if (type == 'Base64') {
    param.forEach(ele => {
      result[ele] = btoa(result[ele]);
    })
  } else if (type == 'Aes') {
    param.forEach(ele => {
      result[ele] = window.CryptoJS.AES.encrypt(result[ele], key).toString();
    })
  }
  return result;
};


/**
 * 浏览器判断是否全屏
 */
export const fullscreenToggel = () => {
  if (fullscreenEnable()) {
    exitFullScreen();
  } else {
    reqFullScreen();
  }
};
/**
 * esc监听全屏
 */
export const listenfullscreen = (callback) => {
  function listen() {
    callback()
  }
  document.addEventListener('fullscreenchange', function() {
    listen();
  });
  document.addEventListener('mozfullscreenchange', function() {
    listen();
  });
  document.addEventListener('webkitfullscreenchange', function() {
    listen();
  });
  document.addEventListener('msfullscreenchange', function() {
    listen();
  });
};
/**
 * 浏览器判断是否全屏
 */
export const fullscreenEnable =
    () => {
      var isFullscreen = document.isFullScreen || document.mozIsFullScreen ||
          document.webkitIsFullScreen
      return isFullscreen;
    }

/**
 * 浏览器全屏
 */
export const reqFullScreen = () => {
  if (document.documentElement.requestFullScreen) {
    document.documentElement.requestFullScreen();
  } else if (document.documentElement.webkitRequestFullScreen) {
    document.documentElement.webkitRequestFullScreen();
  } else if (document.documentElement.mozRequestFullScreen) {
    document.documentElement.mozRequestFullScreen();
  }
};
/**
 * 浏览器退出全屏
 */
export const exitFullScreen = () => {
  if (document.documentElement.requestFullScreen) {
    document.exitFullScreen();
  } else if (document.documentElement.webkitRequestFullScreen) {
    document.webkitCancelFullScreen();
  } else if (document.documentElement.mozRequestFullScreen) {
    document.mozCancelFullScreen();
  }
};
/**
 * 递归寻找子类的父类
 */

export const findParent = (menu, id) => {
  for (let i = 0; i < menu.length; i++) {
    if (menu[i].children.length != 0) {
      for (let j = 0; j < menu[i].children.length; j++) {
        if (menu[i].children[j].id == id) {
          return menu[i];
        } else {
          if (menu[i].children[j].children.length != 0) {
            return findParent(menu[i].children[j].children, id);
          }
        }
      }
    }
  }
};
/**
 * 判断2个对象属性和值是否相等
 */

/**
 * 动态插入css
 */

export const loadStyle = url => {
  const link = document.createElement('link');
  link.type = 'text/css';
  link.rel = 'stylesheet';
  link.href = url;
  const head = document.getElementsByTagName('head')[0];
  head.appendChild(link);
};
/**
 * 判断路由是否相等
 */
export const diff =
    (obj1, obj2) => {
      delete obj1.close;
      var o1 = obj1 instanceof Object;
      var o2 = obj2 instanceof Object;
      if (!o1 || !o2) { /*  判断不是对象  */
        return obj1 === obj2;
      }

      if (Object.keys(obj1).length !== Object.keys(obj2).length) {
        return false;
        // Object.keys()
        // 返回一个由对象的自身可枚举属性(key值)组成的数组,例如：数组返回下表：let
        // arr = ["a", "b", "c"];console.log(Object.keys(arr))->0,1,2;
      }

      for (var attr in obj1) {
        var t1 = obj1[attr] instanceof Object;
        var t2 = obj2[attr] instanceof Object;
        if (t1 && t2) {
          return diff(obj1[attr], obj2[attr]);
        } else if (obj1[attr] !== obj2[attr]) {
          return false;
        }
      }
      return true;
    }
/**
 * 根据字典的value显示label
 */
export const findByvalue = (dic, value) => {
  let result = '';
  if (validatenull(dic)) return value;
  if (typeof (value) == 'string' || typeof (value) == 'number' ||
      typeof (value) == 'boolean') {
    let index = 0;
    index = findArray(dic, value);
    if (index != -1) {
      result = dic[index].label;
    } else {
      result = value;
    }
  } else if (value instanceof Array) {
    result = [];
    let index = 0;
    value.forEach(ele => {
      index = findArray(dic, ele);
      if (index != -1) {
        result.push(dic[index].label);
      } else {
        result.push(value);
      }
    });
    result = result.toString();
  }
  return result;
};
/**
 * 根据字典的value查找对应的index
 */
export const findArray = (dic, value) => {
  for (let i = 0; i < dic.length; i++) {
    if (dic[i].value == value) {
      return i;
    }
  }
  return -1;
};
/**
 * 生成随机len位数字
 */
export const randomLenNum = (len, date) => {
  let random = '';
  random = Math.ceil(Math.random() * 100000000000000)
               .toString()
               .substr(0, len ? len : 4);
  if (date) random = random + Date.now();
  return random;
};
/**
 * 打开小窗口
 */
export const openWindow =
    (url, title, w, h) => {
      // Fixes dual-screen position                            Most browsers
      // Firefox
      const dualScreenLeft =
          window.screenLeft !== undefined ? window.screenLeft : screen.left
      const dualScreenTop =
          window.screenTop !== undefined ? window.screenTop : screen.top

      const width = window.innerWidth ? window.innerWidth :
                                        document.documentElement.clientWidth ?
                                        document.documentElement.clientWidth :
                                        screen.width
      const height = window.innerHeight ?
          window.innerHeight :
          document.documentElement.clientHeight ?
          document.documentElement.clientHeight :
          screen.height

      const left = ((width / 2) - (w / 2)) + dualScreenLeft
      const top = ((height / 2) - (h / 2)) + dualScreenTop
      const newWindow = window.open(
          url, title,
          'toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=no, resizable=yes, copyhistory=no, width=' +
              w + ', height=' + h + ', top=' + top + ', left=' + left)

      // Puts focus on the newWindow
      if (window.focus) {
        newWindow.focus()
      }
    }
/**
 * 导出excel
 */
export const exportFunc =
    (title, data, fileName) => {
      const aoa = [title]
      data.forEach(item => {aoa.push(item)})
      const sheet = XLSX.utils.aoa_to_sheet(aoa)
      const book = XLSX.utils.book_new()
      XLSX.utils.book_append_sheet(book, sheet, 'sheet1')
      XLSX.writeFile(book, fileName)
    }
/**
 * 下载文件
 */
export const download =
    (fileName, data) => {
      if (!data) {
        return;
      }
      let url = window.URL.createObjectURL(new Blob([data]));
      let link = document.createElement('a');
      link.style.display = 'none';
      link.href = url;
      link.setAttribute('download', fileName);

      document.body.appendChild(link);
      link.click();
    }
/**
 * 数据分页
 */
export const pagination =
    (arr, currentPage, pageSize) => {
      const res = [];
      const start = (currentPage - 1) * pageSize;
      const end = start + pageSize;
      for (let index = start; index < end && index < arr.length; index++) {
        res.push(arr[index]);
      }
      return res;
    }
/**
 * 通过身份证获取年龄
 */
export const getAgeByIdNumber =
    (idNumber) => {
      const year = idNumber.substring(6, 10)
      const month = idNumber.substring(10, 12)
      const day = idNumber.substring(12, 14)
      const now = new Date()
      let age = now.getFullYear() - year
      if (now.getMonth() < month ||
          (now.getMonth() == month && day < now.getDay())) {
        age--;
      }

      return age
    }
/**
 * 通过身份证获取性别
 */
export const getGenderByIdNumber = (idNumber) => {
  if (idNumber.substring(16, 17) % 2) {
    return '男'
  } else {
    return '女'
  }
}
/**
 * 通过身份证号脱敏显示
 */
export const idNumberDDesensitization = (idNumber) => {
  if (!idNumber) return '';
  let str = idNumber;
  str = str.toString().replace(/^(.{6})(?:\d+)(.{4})$/, "$1****$2")
  return str;
}
/**
 * 通过姓名脱敏显示
 */
export const nameDesensitization = (name) => {
  if (!name) return '';
  let str = name;
  str = str.substring(0,1) + new Array(str.length).join('*')
  return str;
}