From 91d68225ef4ca8ac0bd31a9e03c990414d71cf6d Mon Sep 17 00:00:00 2001
From: julian <julian@cypherstack.com>
Date: Mon, 6 Nov 2023 15:55:34 -0600
Subject: [PATCH] dogecoin

---
 .../crypto_currency/coins/dogecoin.dart       | 125 ++++++++++++++++++
 1 file changed, 125 insertions(+)
 create mode 100644 lib/wallets/crypto_currency/coins/dogecoin.dart

diff --git a/lib/wallets/crypto_currency/coins/dogecoin.dart b/lib/wallets/crypto_currency/coins/dogecoin.dart
new file mode 100644
index 000000000..b910b0507
--- /dev/null
+++ b/lib/wallets/crypto_currency/coins/dogecoin.dart
@@ -0,0 +1,125 @@
+import 'package:coinlib_flutter/coinlib_flutter.dart' as coinlib;
+import 'package:stackwallet/models/isar/models/blockchain_data/address.dart';
+import 'package:stackwallet/utilities/amount/amount.dart';
+import 'package:stackwallet/utilities/enums/coin_enum.dart';
+import 'package:stackwallet/utilities/enums/derive_path_type_enum.dart';
+import 'package:stackwallet/wallets/crypto_currency/crypto_currency.dart';
+import 'package:stackwallet/wallets/crypto_currency/intermediate/bip39_hd_currency.dart';
+
+class Dogecoin extends Bip39HDCurrency {
+  Dogecoin(super.network);
+
+  @override
+  String constructDerivePath({
+    required DerivePathType derivePathType,
+    int account = 0,
+    required int chain,
+    required int index,
+  }) {
+    String coinType;
+
+    switch (networkParams.wifPrefix) {
+      case 0x9e: // doge mainnet wif
+        coinType = "3"; // doge mainnet
+        break;
+      case 0xf1: // doge testnet wif
+        coinType = "1"; // doge testnet
+        break;
+      default:
+        throw Exception("Invalid Dogecoin network wif used!");
+    }
+
+    int purpose;
+    switch (derivePathType) {
+      case DerivePathType.bip44:
+        purpose = 44;
+        break;
+
+      default:
+        throw Exception("DerivePathType $derivePathType not supported");
+    }
+
+    return "m/$purpose'/$coinType'/$account'/$chain/$index";
+  }
+
+  @override
+  Amount get dustLimit => Amount(
+        rawValue: BigInt.from(1000000),
+        fractionDigits: Coin.particl.decimals,
+      );
+
+  @override
+  String get genesisHash {
+    switch (network) {
+      case CryptoCurrencyNetwork.main:
+        return "1a91e3dace36e2be3bf030a65679fe821aa1d6ef92e7c9902eb318182c355691";
+      case CryptoCurrencyNetwork.test:
+        return "bb0a78264637406b6360aad926284d544d7049f45189db5664f3c4d07350559e";
+      default:
+        throw Exception("Unsupported network: $network");
+    }
+  }
+
+  @override
+  ({
+    coinlib.Address address,
+    AddressType addressType,
+  }) getAddressForPublicKey({
+    required coinlib.ECPublicKey publicKey,
+    required DerivePathType derivePathType,
+  }) {
+    switch (derivePathType) {
+      case DerivePathType.bip44:
+        final addr = coinlib.P2PKHAddress.fromPublicKey(
+          publicKey,
+          version: networkParams.p2pkhPrefix,
+        );
+
+        return (address: addr, addressType: AddressType.p2pkh);
+
+      default:
+        throw Exception("DerivePathType $derivePathType not supported");
+    }
+  }
+
+  @override
+  int get minConfirms => 1;
+
+  @override
+  coinlib.NetworkParams get networkParams {
+    switch (network) {
+      case CryptoCurrencyNetwork.main:
+        return const coinlib.NetworkParams(
+          wifPrefix: 0x9e,
+          p2pkhPrefix: 0x1e,
+          p2shPrefix: 0x16,
+          privHDPrefix: 0x02fac398,
+          pubHDPrefix: 0x02facafd,
+          bech32Hrp: "doge",
+          messagePrefix: '\x18Dogecoin Signed Message:\n',
+        );
+      case CryptoCurrencyNetwork.test:
+        return const coinlib.NetworkParams(
+          wifPrefix: 0xf1,
+          p2pkhPrefix: 0x71,
+          p2shPrefix: 0xc4,
+          privHDPrefix: 0x04358394,
+          pubHDPrefix: 0x043587cf,
+          bech32Hrp: "tdge",
+          messagePrefix: "\x18Dogecoin Signed Message:\n",
+        );
+      default:
+        throw Exception("Unsupported network: $network");
+    }
+  }
+
+  @override
+  bool validateAddress(String address) {
+    try {
+      coinlib.Address.fromString(address, networkParams);
+      return true;
+    } catch (_) {
+      return false;
+    }
+  }
+}