sup kin

pengpengliu · Jun 28, 2020 · 131be15 · 131be15
1 parent ef7ebe0
commit 131be15
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diff --git a/core/src/main/java/org/bitcorej/chain/ChainStateProxy.java b/core/src/main/java/org/bitcorej/chain/ChainStateProxy.java
@@ -41,6 +41,7 @@
 import org.bitcorej.chain.ripple.RippleStateProvider;
 import org.bitcorej.chain.rvc.RVCStateProvider;
 import org.bitcorej.chain.rvn.RVNStateProvider;
+import org.bitcorej.chain.stellar.KINStateProvider;
 import org.bitcorej.chain.stellar.StellarStateProvider;
 import org.bitcorej.chain.stg.STGStateProvider;
 import org.bitcorej.chain.trx.TRXStateProvider;
@@ -173,6 +174,9 @@ public class ChainStateProxy implements ChainState, UTXOState, USDTState, XMRSta
         DIVIStateProvider divi = new DIVIStateProvider(Network.MAIN);
         services.put("DIVI", divi);
         services.put("DIVI_MAIN", divi);
+        KINStateProvider kin = new KINStateProvider(Network.MAIN);
+        services.put("KIN", kin);
+        services.put("KI_MAIN", kin);
     }
 
     private ChainState provider;

diff --git a/core/src/main/java/org/bitcorej/chain/stellar/KINStateProvider.java b/core/src/main/java/org/bitcorej/chain/stellar/KINStateProvider.java
@@ -0,0 +1,54 @@
+package org.bitcorej.chain.stellar;
+
+import org.bitcorej.core.Network;
+import org.bitcorej.utils.NumericUtil;
+import org.json.JSONObject;
+import org.stellar.sdk.*;
+
+import java.math.BigDecimal;
+import java.util.List;
+
+public class KINStateProvider extends StellarStateProvider {
+    public KINStateProvider(Network network) {
+        super(network);
+    }
+
+    @Override
+    protected void switchNetwork() {
+        org.stellar.sdk.Network.use(new org.stellar.sdk.Network("Kin Mainnet ; December 2018"));
+    }
+
+    @Override
+    public String signRawTransaction(String rawTx, List<String> keys) {
+        switchNetwork();
+        JSONObject jsonObject = new JSONObject(rawTx);
+        String to = jsonObject.getString("to");
+        String type = jsonObject.getString("type");
+        Long sequence = Long.parseLong(jsonObject.getString("sequence"));
+        int fee = jsonObject.getInt("fee");
+        String memo = jsonObject.getString("memo");
+        // The KIN decimals is 5 (XLM is 7)
+        BigDecimal amount = new BigDecimal(jsonObject.getString("amount")).divide(new BigDecimal(100));
+        org.stellar.sdk.KeyPair source = org.stellar.sdk.KeyPair.fromSecretSeed(keys.get(0));
+        org.stellar.sdk.KeyPair destination = org.stellar.sdk.KeyPair.fromAccountId(to);
+        Asset asset = new AssetTypeNative();
+        Operation op;
+        if (type.equals("payment")) {
+            op = new PaymentOperation.Builder(destination, asset, amount.toString()).build();
+        } else if (type.equals("create_account")) {
+            op = new CreateAccountOperation.Builder(destination, amount.toString()).build();
+        } else {
+            throw new RuntimeException("no sup op");
+        }
+        org.stellar.sdk.Transaction transaction = new org.stellar.sdk.Transaction.Builder(new Account(source, sequence))
+                .addOperation(op)
+                .setOperationFee(fee)
+                .addMemo(Memo.text(memo))
+                .setTimeout(0)
+                .build();
+        transaction.sign(source);
+        JSONObject packedTx = new JSONObject();
+        packedTx.put("XDR", transaction.toEnvelopeXdrBase64());
+        return packedTx.toString();
+    }
+}