Nearly there

side-node/src/node.rs

@@ -1,16 +1,23 @@
 use bft_json_crdt::json_crdt::BaseCrdt;
+use fastcrypto::ed25519::Ed25519KeyPair;
 
 use crate::{list_transaction_crdt::TransactionList, websocket::WebSocketClient};
 
 pub(crate) struct SideNode {
     crdt: BaseCrdt<TransactionList>,
+    keys: fastcrypto::ed25519::Ed25519KeyPair,
     websocket_client: WebSocketClient,
 }
 
 impl SideNode {
-    pub(crate) fn new(websocket_client: WebSocketClient, crdt: BaseCrdt<TransactionList>) -> Self {
+    pub(crate) fn new(
+        websocket_client: WebSocketClient,
+        crdt: BaseCrdt<TransactionList>,
+        keys: Ed25519KeyPair,
+    ) -> Self {
         Self {
             crdt,
+            keys,
             websocket_client,
         }
     }
@@ -18,4 +25,25 @@ impl SideNode {
     pub(crate) async fn start(&mut self) {
         self.websocket_client.start().await;
     }
+
+    fn add_transaction_locally(
+        &mut self,
+        transaction: serde_json::Value,
+    ) -> bft_json_crdt::json_crdt::SignedOp {
+        // let last: &Op<Transaction>;
+        let last = self
+            .crdt
+            .doc
+            .list
+            .ops
+            .last()
+            .expect("couldn't find last op");
+        let signed_op = self
+            .crdt
+            .doc
+            .list
+            .insert(last.id, transaction)
+            .sign(&self.keys);
+        signed_op
+    }
 }