import OB from "@onebro/oba-common";
import CryptoJS from "crypto-js";

const key = OB.appvar("_APP_CONFIGS")["cctx-playground"].app.ekey;
export class Encrypter {
  constructor(){}
  jsonFormatter = {
    stringify: function(cipherParams:any){
      let ct,iv,s;
      ct = cipherParams.ciphertext.toString(CryptoJS.enc.Base64);
      if (cipherParams.iv) iv = cipherParams.iv.toString();
      if (cipherParams.salt) s = cipherParams.salt.toString();
      return iv+"\\"+ct+"\\"+s;
    },
    parse: function(jsonStr:string) {
      const [iv,ct,s] = jsonStr.split("\\");
      const cipherParams = CryptoJS.lib.CipherParams.create({ciphertext: CryptoJS.enc.Base64.parse(ct)});
      if(iv) cipherParams.iv = CryptoJS.enc.Hex.parse(iv);
      if(s) cipherParams.salt = CryptoJS.enc.Hex.parse(s);
      return cipherParams;
    }
  };
  encrypt = (value:any) => {
    value = typeof value == "string"? value: JSON.stringify(value);
    const encrypted = CryptoJS.AES.encrypt(value,key,{format:this.jsonFormatter,mode:CryptoJS.mode.CBC}).toString();
    return encrypted;
  }
  decrypt = (value:any) => CryptoJS.AES.decrypt(value,key,{format:this.jsonFormatter}).toString(CryptoJS.enc.Utf8);
}