Method toString

blue_modules/ur/index.js:283–372

()

  bbqrParts = {}; // key-value, payload->1

  toString() {
    if (Object.keys(this.bbqrParts).length > 0) {
      // its BBQR, handle differently
      const decodedBbqr = joinQRs(Object.keys(this.bbqrParts));
      if (decodedBbqr.fileType === 'P') {
        // if its psbt we return base64:
        return uint8ArrayToBase64(decodedBbqr.raw);
      }

      // for everything else we covnert bytes to string directly
      return uint8ArrayToString(decodedBbqr.raw);
    }

    const decoded = this.resultUR();

    if (decoded.type === 'crypto-psbt') {
      const cryptoPsbt = CryptoPSBT.fromCBOR(decoded.cbor);
      return cryptoPsbt.getPSBT().toString('base64');
    }

    if (decoded.type === 'bytes') {
      const bytes = Bytes.fromCBOR(decoded.cbor);
      const data = bytes.getData();
      return uint8ArrayToString(data);
    }

    if (decoded.type === 'crypto-account') {
      const cryptoAccount = CryptoAccount.fromCBOR(decoded.cbor);

      const results = [];
      for (const outputDescriptor of cryptoAccount.outputDescriptors) {
        // now, crafting zpub out of data we have
        const hdKey = outputDescriptor.getCryptoKey();
        const derivationPath = 'm/' + hdKey.getOrigin().getPath();
        const script = cryptoAccount.outputDescriptors[0].getScriptExpressions()[0].getExpression();
        const isMultisig =
          script === ScriptExpressions.WITNESS_SCRIPT_HASH.getExpression() ||
          // fallback to paths (unreliable).
          // dont know how to add ms p2sh (legacy) or p2sh-p2wsh (wrapped segwit) atm
          derivationPath === MultisigHDWallet.PATH_LEGACY ||
          derivationPath === MultisigHDWallet.PATH_WRAPPED_SEGWIT ||
          derivationPath === MultisigHDWallet.PATH_NATIVE_SEGWIT;
        const version = hexToUint8Array(isMultisig ? '02aa7ed3' : '04b24746');
        const parentFingerprint = hdKey.getParentFingerprint();
        const depth = hdKey.getOrigin().getDepth();
        const depthBuf = new Uint8Array(1);
        depthBuf[0] = depth;
        const components = hdKey.getOrigin().getComponents();
        const lastComponents = components[components.length - 1];
        const index = lastComponents.isHardened() ? lastComponents.getIndex() + 0x80000000 : lastComponents.getIndex();
        const indexBuf = new Uint8Array(4);
        new DataView(indexBuf.buffer).setUint32(0, index, false); // big-endian
        const chainCode = hdKey.getChainCode();
        const key = hdKey.getKey();
        const data = concatUint8Arrays([version, depthBuf, parentFingerprint, indexBuf, chainCode, key]);

        const zpub = b58.encode(data);