EtherscanTransaction.fromJson constructor

Implementation

factory EtherscanTransaction.fromJson(
  Json json, {
  required CoinEntity token,
  required String address,
}) {
  /// Etherscan V2
  if (json
      case {
        'blockNumber': String block_s,
        'timeStamp': String timeStamp_s,
        'hash': String hash,
        'from': String from,
        'to': String to,
        'value': String value_s,
        'gas': String gas_s,
        'gasUsed': String gasUsed_s,
        'gasPrice': String gasPrice_s,
        'txreceipt_status': String txreceipt_status_s,
        'isError': String _,
        'input': String input_s,
        'functionName': String functionName, // V2 only
      }) {
    final block = block_s.toIntOrNull ?? -1;
    final confirmations = block_s.toIntOrNull ?? -1;

    final timeMilli = timeStamp_s.toIntOrNull ?? -1;
    final amount = Amount(
      value: BigInt.tryParse(value_s) ?? BigInt.from(-1),
      decimals: token.decimals,
    );

    final fee = Amount(
      value: gasPrice_s.toBigInt * gasUsed_s.toBigInt,
      decimals: token.decimals,
    );

    final gasPrice = Amount(
      value: gasPrice_s.toBigInt,
      decimals: token.decimals,
    );

    final transferMethod =
        TransactionTransferMethod.fromAddress(address, to, from);

    final input = input_s.hexToBytesWithPrefixOrNull ?? Uint8List(0);

    final contractFunction = switch (functionName) {
      "" => null,
      _ => ContractFunction.fromTextSignature(textSignature: functionName)
    };

    ContractFunctionWithValues? decodedInput;
    if (contractFunction != null) {
      try {
        decodedInput = ContractFunction.decode(
          data: input,
          function: contractFunction,
        );
      } catch (e, s) {
        Logger.logError(e, s: s, hint: "Failed to decode contract function");
      }
    }

    return EtherscanTransaction(
      hash: hash,
      block: block,
      confirmations: confirmations,
      timeMilli: timeMilli * 1000,
      amount: amount,
      fee: fee,
      gasPrice: gasPrice,
      gasUsed: gasUsed_s.toInt,
      sender: from,
      gas: gas_s.toInt,
      recipient: to,
      transferMethod: transferMethod,
      token: token,
      status: ConfirmationStatus.fromReceiptStatus(
        txreceipt_status_s.toIntOrNull ?? -1,
      ),
      input: input,
      decodedInput: decodedInput,
    );
  }

  /// Etherscan V1
  if (json
      case {
        'blockNumber': String block_s,
        'timeStamp': String timeStamp_s,
        'hash': String hash,
        'from': String from,
        'to': String to,
        'value': String value_s,
        'gas': String gas_s,
        'gasUsed': String gasUsed_s,
        'gasPrice': String gasPrice_s,
        'txreceipt_status': String txreceipt_status_s,
        'isError': String _,
        'input': String input_s,
      }) {
    final block = block_s.toIntOrNull ?? -1;
    final confirmations = block_s.toIntOrNull ?? -1;

    final timeMilli = timeStamp_s.toIntOrNull ?? -1;
    final amount = Amount(
      value: BigInt.tryParse(value_s) ?? BigInt.from(-1),
      decimals: token.decimals,
    );

    final fee = Amount(
      value: gasPrice_s.toBigInt * gasUsed_s.toBigInt,
      decimals: token.decimals,
    );

    final gasPrice = Amount(
      value: gasPrice_s.toBigInt,
      decimals: token.decimals,
    );

    final transferMethod =
        TransactionTransferMethod.fromAddress(address, to, from);

    final input = input_s.hexToBytesWithPrefixOrNull ?? Uint8List(0);

    return EtherscanTransaction(
      hash: hash,
      block: block,
      confirmations: confirmations,
      timeMilli: timeMilli * 1000,
      amount: amount,
      fee: fee,
      gasPrice: gasPrice,
      gasUsed: gasUsed_s.toInt,
      sender: from,
      gas: gas_s.toInt,
      recipient: to,
      transferMethod: transferMethod,
      token: token,
      status: ConfirmationStatus.fromReceiptStatus(
        txreceipt_status_s.toIntOrNull ?? -1,
      ),
      input: input,
    );
  }

  throw UnsupportedError("Invalid JSON for EtherscanTransaction");
}