soroban update

README.md

@@ -128,8 +128,113 @@ const success = await ethereum.request({
     }
     })
 ```
+### 'signTransaction'
+This method signs an Arbitary Transaction
+```javascript
+    async function signTransaction(){
+      const transaction = new StellarSdk.TransactionBuilder(account, { fee, networkPassphrase: "Test SDF Network ; September 2015" });
+      // Add a payment operation to the transaction
+      console.log("transaction builder initilazed");
+      await transaction.addOperation(StellarSdk.Operation.payment({
+        destination: receiverPublicKey,
+        // The term native asset refers to lumens
+        asset: StellarSdk.Asset.native(),
+        // Specify 350.1234567 lumens. Lumens are divisible to seven digits past
+        // the decimal. They are represented in JS Stellar SDK in string format
+        // to avoid errors from the use of the JavaScript Number data structure.
+        amount: '350.1234567',
+      }));
+      console.log("operations added")
+      // Make this transaction valid for the next 30 seconds only
+      await transaction.setTimeout(30);
+      console.log("timeout set");
+      // Uncomment to add a memo (https://www.stellar.org/developers/learn/concepts/transactions.html)
+      // .addMemo(StellarSdk.Memo.text('Hello world!'))
+      const endTransaction = await transaction.build();
+      const xdrTransaction = endTransaction.toXDR();
+      console.log(xdrTransaction);
+      const response = await ethereum.request({
+        method: 'wallet_invokeSnap',
+        params:{snapId:snapId, request:{
+          method: 'signTransaction',
+          params:{
+            transaction: xdrTransaction,
+            testnet: testnet
+          }
+        }}
+      })
+      console.log(response);
+    }
+```
+### 'Soroban'
+The Wallet also supports sorroban, To sign a SorobanCall
+futurenet must be set to true on the params object.
+```javascript
+    async function callContract() {
+      console.log("here in callContract");
+  const sourcePublicKey = await ethereum.request({
+          method: 'wallet_invokeSnap',
+          params: {snapId:snapId, request:{
+            method: 'getAddress',
+          }}
+      })
+  const server = new SorobanClient.Server('https://rpc-futurenet.stellar.org');
+
+  console.log("getting account")
+  const account = await server.getAccount(sourcePublicKey);
+  console.log("account is: ")
+  console.log(account);
 
+  console.log(SorobanClient);
 
+  const contract = new SorobanClient.Contract("CCNLUNUY66TU4MB6JK4Y4EHVQTAO6KDWXDUSASQD2BBURMQT22H2CQU7")
+  console.log(contract)
+  const arg = SorobanClient.nativeToScVal("world")
+  console.log("arg is: ")
+  console.log(arg)
+  let call_operation = contract.call('hello', arg);
+  console.log(call_operation)
+
+  let transaction = new SorobanClient.TransactionBuilder(account, { fee: "150", networkPassphrase: SorobanClient.Networks.FUTURENET })
+    .addOperation(call_operation) // <- funds and creates destinationA
+    .setTimeout(30)
+    .build();
+
+  console.log(transaction)
+
+
+    const preparedTransaction = await server.prepareTransaction(transaction, SorobanClient.Networks.FUTURENET);
+    console.log("prepairedTxn: ");
+    console.log(preparedTransaction);
+    const tx_XDR = preparedTransaction.toXDR();
+    const signedXDR = await ethereum.request(
+      {method: 'wallet_invokeSnap',
+          params: {
+            snapId:snapId, 
+            request:{
+              method: 'signTransaction',
+              params:{
+                transaction: tx_XDR,
+                futurenet: true
+              }
+            }
+          }
+      }
+    )
+  console.log(signedXDR)
+  try{
+
+    const transactionResult = await server.sendTransaction(signedXDR);
+    console.log(JSON.stringify(transactionResult, null, 2));
+    console.log('\nSuccess! View the transaction at: ');
+    console.log(transactionResult)
+  } catch (e) {
+    console.log('An error has occured:');
+    console.log(e);
+  }
+}
+
+```
 ## building from Source
 
 ```shell