const aesJs = require('aes-js');


function _0x2925ac(x) {
    var c = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
    var e = "";
    for (var W = 0; W < x; W++) {
        e += c.charAt(Math.random(0, 62));
    }
    return e
}

function _0x5178e5(x) {
    let _ = "";
    for (let d = 0; d < x.length; d++) {
        _ += String["fromCharCode"](x[d]);
    }
    return _
}

function aes_encrypt(key, str) {
    let a = aesJs["utils"]["utf8"]["toBytes"](key)
        , f = _0x2925ac(16)
        , n = aesJs["utils"]["utf8"]["toBytes"](f)
        , t = aesJs["utils"]["utf8"]["toBytes"](str);
    t = aesJs.padding.pkcs7.pad(t);
    const r = new aesJs.ModeOfOperation.cbc(a, n).encrypt(t);
    const b = new Uint8Array(n["length"] + t["length"]);
    b["set"](n, 0);
    b["set"](r, 16);
    return btoa(_0x5178e5(b))
}

module.exports = {aes_encrypt}