import { JSEncrypt } from 'jsencrypt'
const publicKey = hexToDec();

function hexToDec() {
    let str =
        'LS0tLS1CRUdJTiBQVUJMSUMgS0VZLS0tLS0KTUlHZk1BMEdDU3FHU0liM0RRRUJBUVVBQTRHTkFEQ0JpUUtCZ1FEWjFVUnZMODRUWG9LTUFXMng2UDZ4WHplZQpXaUxINVljSFJGZ3YwZzBmSVVtTG02UDZ1Z2s1WXpHSkhrSkxvWFlvYmt4SHJXV1FBRjhuZmRnTDVMYmYzMGJ3CjlITVJ1REJXV2w4S3NFYTdwTVllZ2NsY1dncVJwOXBMZVMzQzhXQlI1NmxsNTM4TDF0MkJWZEh5U1pvUnFGRE8KZmJqTitKN0xnWUl6S2NVZGJ3SURBUUFCCi0tLS0tRU5EIFBVQkxJQyBLRVktLS0tLQo='
    str = atob(str);
    return str;
}

function atob(input) {
  const chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
  let str = input.replace(/=+$/, '');
  let output = '';
 
  if (str.length % 4 === 1) {
    throw new Error('InvalidLengthError');
  }
 
  for (let i = 0, len = str.length; i < len; i += 4) {
    const a = chars.indexOf(str.charAt(i));
    const b = chars.indexOf(str.charAt(i + 1));
    const c = chars.indexOf(str.charAt(i + 2));
    const d = chars.indexOf(str.charAt(i + 3));
    const sum = (a << 18) | (b << 12) | (c << 6) | d;
    output += String.fromCharCode((sum >> 16) & 0xFF, (sum >> 8) & 0xFF, sum & 0xFF);
  }
 
  return output;
}


export function returnJSEncrypt(data, is = true) {
    let jsencrypt = new JSEncrypt()
    jsencrypt.setPublicKey(publicKey)
    if (is) {
        data.st = Date.parse(new Date());
    }
    let s = JSON.stringify(data);
    let arr = [];
    if (s.length > 50) {
        let reg = /.{50}/g;
        let rs = s.match(reg);
        rs.push(s.substring(rs.join('').length));
        rs.forEach(item => {
            arr.push(jsencrypt.encrypt(item));
        })
    } else {
        arr[0] = jsencrypt.encrypt(s)
    }
    return arr
}