mirror of
https://github.com/cypherstack/stack_wallet.git
synced 2024-11-05 20:07:44 +00:00
554 lines
16 KiB
Dart
554 lines
16 KiB
Dart
import 'dart:convert';
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import 'dart:math';
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import 'package:decimal/decimal.dart';
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import 'package:http/http.dart';
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import 'package:stackwallet/dto/ethereum/eth_token_tx_dto.dart';
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import 'package:stackwallet/dto/ethereum/eth_token_tx_extra_dto.dart';
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import 'package:stackwallet/dto/ethereum/eth_tx_dto.dart';
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import 'package:stackwallet/models/isar/models/ethereum/eth_contract.dart';
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import 'package:stackwallet/models/paymint/fee_object_model.dart';
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import 'package:stackwallet/utilities/default_nodes.dart';
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import 'package:stackwallet/utilities/eth_commons.dart';
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import 'package:stackwallet/utilities/logger.dart';
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class EthApiException with Exception {
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EthApiException(this.message);
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final String message;
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@override
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String toString() => "$runtimeType: $message";
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}
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class EthereumResponse<T> {
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EthereumResponse(this.value, this.exception);
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final T? value;
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final EthApiException? exception;
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@override
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toString() => "EthereumResponse: { value: $value, exception: $exception }";
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}
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abstract class EthereumAPI {
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static String get stackBaseServer => DefaultNodes.ethereum.host;
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// static const etherscanApi =
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// "https://api.etherscan.io/api"; //TODO - Once our server has abi functionality update
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static const gasTrackerUrl =
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"https://blockscout.com/eth/mainnet/api/v1/gas-price-oracle";
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static Future<EthereumResponse<List<EthTxDTO>>> getEthTransactions(
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String address) async {
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try {
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final response = await get(
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Uri.parse(
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"$stackBaseServer/export?addrs=$address",
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),
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);
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if (response.statusCode == 200) {
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if (response.body.isNotEmpty) {
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final json = jsonDecode(response.body) as Map;
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final list = json["data"] as List?;
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final List<EthTxDTO> txns = [];
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for (final map in list!) {
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final txn = EthTxDTO.fromMap(Map<String, dynamic>.from(map as Map));
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if (txn.hasToken == 0) {
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txns.add(txn);
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}
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}
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return EthereumResponse(
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txns,
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null,
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);
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} else {
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throw EthApiException(
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"getEthTransactions($address) response is empty but status code is "
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"${response.statusCode}",
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);
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}
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} else {
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throw EthApiException(
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"getEthTransactions($address) failed with status code: "
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"${response.statusCode}",
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);
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}
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} on EthApiException catch (e) {
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return EthereumResponse(
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null,
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e,
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);
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} catch (e, s) {
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Logging.instance.log(
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"getEthTransactions($address): $e\n$s",
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level: LogLevel.Error,
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);
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return EthereumResponse(
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null,
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EthApiException(e.toString()),
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);
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}
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}
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static Future<EthereumResponse<List<EthTokenTxExtraDTO>>>
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getEthTokenTransactionsByTxids(List<String> txids) async {
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try {
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final response = await get(
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Uri.parse(
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"$stackBaseServer/transactions?transactions=${txids.join(" ")}",
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),
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);
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if (response.statusCode == 200) {
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if (response.body.isNotEmpty) {
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final json = jsonDecode(response.body) as Map;
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final list = json["data"] as List?;
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final List<EthTokenTxExtraDTO> txns = [];
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for (final map in list!) {
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final txn = EthTokenTxExtraDTO.fromMap(
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Map<String, dynamic>.from(map as Map),
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);
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txns.add(txn);
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}
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return EthereumResponse(
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txns,
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null,
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);
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} else {
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throw EthApiException(
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"getEthTransaction($txids) response is empty but status code is "
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"${response.statusCode}",
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);
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}
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} else {
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throw EthApiException(
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"getEthTransaction($txids) failed with status code: "
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"${response.statusCode}",
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);
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}
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} on EthApiException catch (e) {
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return EthereumResponse(
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null,
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e,
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);
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} catch (e, s) {
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Logging.instance.log(
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"getEthTransaction($txids): $e\n$s",
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level: LogLevel.Error,
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);
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return EthereumResponse(
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null,
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EthApiException(e.toString()),
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);
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}
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}
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static Future<EthereumResponse<List<EthTokenTxDto>>> getTokenTransactions({
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required String address,
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required String tokenContractAddress,
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}) async {
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try {
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final response = await get(
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Uri.parse(
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"$stackBaseServer/export?addrs=$address&emitter=$tokenContractAddress&logs=true",
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),
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);
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if (response.statusCode == 200) {
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if (response.body.isNotEmpty) {
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final json = jsonDecode(response.body) as Map;
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final list = json["data"] as List?;
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final List<EthTokenTxDto> txns = [];
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for (final map in list!) {
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final txn =
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EthTokenTxDto.fromMap(Map<String, dynamic>.from(map as Map));
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txns.add(txn);
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}
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return EthereumResponse(
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txns,
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null,
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);
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} else {
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throw EthApiException(
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"getTokenTransactions($address, $tokenContractAddress) response is empty but status code is "
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"${response.statusCode}",
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);
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}
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} else {
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throw EthApiException(
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"getTokenTransactions($address, $tokenContractAddress) failed with status code: "
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"${response.statusCode}",
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);
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}
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} on EthApiException catch (e) {
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return EthereumResponse(
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null,
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e,
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);
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} catch (e, s) {
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Logging.instance.log(
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"getTokenTransactions($address, $tokenContractAddress): $e\n$s",
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level: LogLevel.Error,
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);
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return EthereumResponse(
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null,
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EthApiException(e.toString()),
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);
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}
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}
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// ONLY FETCHES WALLET TOKENS WITH A NON ZERO BALANCE
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// static Future<EthereumResponse<List<EthToken>>> getWalletTokens({
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// required String address,
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// }) async {
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// try {
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// final uri = Uri.parse(
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// "$blockExplorer?module=account&action=tokenlist&address=$address",
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// );
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// final response = await get(uri);
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//
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// if (response.statusCode == 200) {
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// final json = jsonDecode(response.body);
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// if (json["message"] == "OK") {
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// final result =
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// List<Map<String, dynamic>>.from(json["result"] as List);
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// final List<EthToken> tokens = [];
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// for (final map in result) {
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// if (map["type"] == "ERC-20") {
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// tokens.add(
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// Erc20Token(
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// balance: int.parse(map["balance"] as String),
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// contractAddress: map["contractAddress"] as String,
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// decimals: int.parse(map["decimals"] as String),
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// name: map["name"] as String,
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// symbol: map["symbol"] as String,
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// ),
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// );
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// } else if (map["type"] == "ERC-721") {
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// tokens.add(
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// Erc721Token(
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// balance: int.parse(map["balance"] as String),
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// contractAddress: map["contractAddress"] as String,
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// decimals: int.parse(map["decimals"] as String),
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// name: map["name"] as String,
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// symbol: map["symbol"] as String,
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// ),
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// );
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// } else {
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// throw EthApiException(
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// "Unsupported token type found: ${map["type"]}");
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// }
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// }
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//
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// return EthereumResponse(
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// tokens,
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// null,
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// );
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// } else {
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// throw EthApiException(json["message"] as String);
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// }
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// } else {
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// throw EthApiException(
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// "getWalletTokens($address) failed with status code: "
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// "${response.statusCode}",
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// );
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// }
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// } on EthApiException catch (e) {
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// return EthereumResponse(
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// null,
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// e,
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// );
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// } catch (e, s) {
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// Logging.instance.log(
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// "getWalletTokens(): $e\n$s",
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// level: LogLevel.Error,
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// );
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// return EthereumResponse(
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// null,
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// EthApiException(e.toString()),
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// );
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// }
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// }
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static Future<EthereumResponse<int>> getWalletTokenBalance({
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required String address,
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required String contractAddress,
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}) async {
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try {
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final uri = Uri.parse(
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"$stackBaseServer/tokens?addrs=$contractAddress $address",
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);
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final response = await get(uri);
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if (response.statusCode == 200) {
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final json = jsonDecode(response.body);
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if (json["data"] is List) {
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final map = json["data"].first as Map;
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final bal = Decimal.tryParse(map["balance"].toString());
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final int balance;
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if (bal == null) {
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balance = 0;
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} else {
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final int decimals = map["decimals"] as int;
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balance = (bal * Decimal.fromInt(pow(10, decimals).truncate()))
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.toBigInt()
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.toInt();
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}
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return EthereumResponse(
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balance,
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null,
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);
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} else {
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throw EthApiException(json["message"] as String);
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}
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} else {
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throw EthApiException(
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"getWalletTokenBalance($address) failed with status code: "
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"${response.statusCode}",
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);
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}
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} on EthApiException catch (e) {
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return EthereumResponse(
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null,
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e,
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);
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} catch (e, s) {
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Logging.instance.log(
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"getWalletTokenBalance(): $e\n$s",
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level: LogLevel.Error,
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);
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return EthereumResponse(
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null,
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EthApiException(e.toString()),
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);
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}
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}
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static Future<GasTracker> getGasOracle() async {
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final response = await get(Uri.parse(gasTrackerUrl));
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if (response.statusCode == 200) {
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return GasTracker.fromJson(
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json.decode(response.body) as Map<String, dynamic>);
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} else {
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throw Exception('Failed to load gas oracle');
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}
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}
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static Future<FeeObject> getFees() async {
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GasTracker fees = await getGasOracle();
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final feesFast = fees.fast * (pow(10, 9));
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final feesStandard = fees.average * (pow(10, 9));
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final feesSlow = fees.slow * (pow(10, 9));
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return FeeObject(
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numberOfBlocksFast: 1,
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numberOfBlocksAverage: 3,
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numberOfBlocksSlow: 3,
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fast: feesFast.toInt(),
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medium: feesStandard.toInt(),
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slow: feesSlow.toInt());
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}
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static Future<EthereumResponse<EthContract>> getTokenContractInfoByAddress(
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String contractAddress) async {
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try {
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final response = await get(
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Uri.parse(
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"$stackBaseServer/tokens?addrs=$contractAddress&parts=all",
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),
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);
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if (response.statusCode == 200) {
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final json = jsonDecode(response.body) as Map;
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if (json["data"] is List) {
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final map = Map<String, dynamic>.from(json["data"].first as Map);
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EthContract? token;
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if (map["isErc20"] == true) {
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token = EthContract(
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address: map["address"] as String,
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decimals: map["decimals"] as int,
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name: map["name"] as String,
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symbol: map["symbol"] as String,
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type: EthContractType.erc20,
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);
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} else if (map["isErc721"] == true) {
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token = EthContract(
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address: map["address"] as String,
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decimals: map["decimals"] as int,
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name: map["name"] as String,
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symbol: map["symbol"] as String,
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type: EthContractType.erc721,
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);
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} else {
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throw EthApiException(
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"Unsupported token type found: ${map["type"]}");
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}
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return EthereumResponse(
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token,
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null,
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);
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} else {
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throw EthApiException(response.body);
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}
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} else {
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throw EthApiException(
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"getTokenByContractAddress($contractAddress) failed with status code: "
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"${response.statusCode}",
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);
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}
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} on EthApiException catch (e) {
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return EthereumResponse(
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null,
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e,
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);
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} catch (e, s) {
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Logging.instance.log(
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"getTokenByContractAddress(): $e\n$s",
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level: LogLevel.Error,
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);
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return EthereumResponse(
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null,
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EthApiException(e.toString()),
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);
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}
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}
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static Future<EthereumResponse<String>> getTokenAbi({
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required String name,
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required String contractAddress,
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}) async {
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try {
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final response = await get(
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Uri.parse(
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"$stackBaseServer/abis?addrs=$contractAddress&verbose=true",
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),
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);
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if (response.statusCode == 200) {
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final json = jsonDecode(response.body)["data"] as List;
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return EthereumResponse(
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jsonEncode(json),
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null,
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);
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} else {
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throw EthApiException(
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"getTokenAbi($name, $contractAddress) failed with status code: "
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"${response.statusCode}",
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);
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}
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} on EthApiException catch (e) {
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return EthereumResponse(
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null,
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e,
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);
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} catch (e, s) {
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Logging.instance.log(
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"getTokenAbi($name, $contractAddress): $e\n$s",
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level: LogLevel.Error,
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);
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return EthereumResponse(
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null,
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EthApiException(e.toString()),
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);
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}
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}
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// static Future<EthereumResponse<String>> getTokenAbi22(
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// String contractAddress) async {
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// try {
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// final response = await get(
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// Uri.parse(
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// "https://api.etherscan.io/api?module=contract&action=getabi&address=$contractAddress&apikey=EG6J7RJIQVSTP2BS59D3TY2G55YHS5F2HP",
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// ),
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// );
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//
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// if (response.statusCode == 200) {
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// final json = jsonDecode(response.body) as Map;
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// print("========================== 222222222222222 ================");
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// dev.log((jsonDecode(json["result"] as String)).toString());
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// print(
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// "============================ 2222222222222222222 ==============");
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//
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// return EthereumResponse(
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// json["result"] as String,
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// null,
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// );
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// } else {
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// throw EthApiException(
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// "getTokenAbi($contractAddress) failed with status code: "
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// "${response.statusCode}",
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// );
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// }
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// } on EthApiException catch (e) {
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// return EthereumResponse(
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// null,
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// e,
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// );
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// } catch (e, s) {
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// Logging.instance.log(
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// "getTokenAbi(): $e\n$s",
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// level: LogLevel.Error,
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// );
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// return EthereumResponse(
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// null,
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// EthApiException(e.toString()),
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// );
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// }
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// }
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|
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// /// Fetch the underlying contract address that a proxy contract points to
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// static Future<EthereumResponse<String>> getProxyTokenImplementation(
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// String contractAddress) async {
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// try {
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// final response = await get(Uri.parse(
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// "$stackURI?module=contract&action=getsourcecode&address=$contractAddress"));
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// // "$etherscanApi?module=contract&action=getsourcecode&address=$contractAddress&apikey=EG6J7RJIQVSTP2BS59D3TY2G55YHS5F2HP"));
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// if (response.statusCode == 200) {
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// final json = jsonDecode(response.body);
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// if (json["message"] == "OK") {
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// final list = json["result"] as List;
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// final map = Map<String, dynamic>.from(list.first as Map);
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//
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// return EthereumResponse(
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// map["Implementation"] as String,
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// null,
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// );
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// } else {
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// throw EthApiException(json["message"] as String);
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// }
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// } else {
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// throw EthApiException(
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// "fetchProxyTokenImplementation($contractAddress) failed with status code: "
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// "${response.statusCode}",
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// );
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// }
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// } on EthApiException catch (e) {
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// return EthereumResponse(
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// null,
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// e,
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// );
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// } catch (e, s) {
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// Logging.instance.log(
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// "fetchProxyTokenImplementation(): $e\n$s",
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// level: LogLevel.Error,
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// );
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// return EthereumResponse(
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// null,
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// EthApiException(e.toString()),
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// );
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// }
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// }
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}
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