From 25b484022a01530323694d19a35e8e7cc20635ac Mon Sep 17 00:00:00 2001
From: Harvey Zuccon <hzuccon@gmail.com>
Date: Tue, 2 Sep 2025 07:09:41 +0000
Subject: [PATCH] Resolve "Wallets: Emit statusUpdated if payload is not
 specialized"

---
 .../src/blockchain/blockchain-inmemory.ts     | 37 +++++--------------
 packages/stack/src/wallet/wallet-p2pkh.ts     | 15 +++++---
 2 files changed, 19 insertions(+), 33 deletions(-)

diff --git a/packages/stack/src/blockchain/blockchain-inmemory.ts b/packages/stack/src/blockchain/blockchain-inmemory.ts
index 3b68c2e..4fb5111 100644
--- a/packages/stack/src/blockchain/blockchain-inmemory.ts
+++ b/packages/stack/src/blockchain/blockchain-inmemory.ts
@@ -6,8 +6,7 @@ import {
   type BlockchainUTXO,
   type BlockchainUTXOs,
   type BlockchainChainTip,
-  AddressStatusPayload,
-  BlockHeightPayload,
+  type BlockHeightPayload,
 } from './types.js';
 
 import {
@@ -29,10 +28,7 @@ import {
 /**
  * @remarks This provider DOES NOT enforce the 100 confirmations Coinbase Transaction rule.
  **/
-export class BlockchainInMemory extends BaseBlockchain<
-  AddressStatusPayload,
-  BlockHeightPayload
-> {
+export class BlockchainInMemory extends BaseBlockchain<BlockHeightPayload> {
   static async from<T extends typeof BlockchainInMemory>(this: T) {
     const blockchain = new this();
     await blockchain.start();
@@ -41,10 +37,7 @@ export class BlockchainInMemory extends BaseBlockchain<
 
   private blockHeaders: Array<BlockHeader>;
   private transactions: BlockchainTransactions;
-  private addressSubscriptions: Map<
-    string,
-    Set<BlockchainCallback<AddressStatusPayload>>
-  >;
+  private addressSubscriptions: Map<string, Set<BlockchainCallback>>;
   private transactionSubscriptions: Map<string, Set<BlockchainCallback>>;
 
   constructor() {
@@ -177,7 +170,7 @@ export class BlockchainInMemory extends BaseBlockchain<
 
   async subscribeLockscript(
     lockscript: string | Uint8Array,
-    callback: BlockchainCallback<AddressStatusPayload>,
+    callback: BlockchainCallback,
   ) {
     // Fulcrum does not support subscribing to lockscripts, so we cast it to an address.
     const address = Address.fromLockscript(lockscript);
@@ -191,7 +184,7 @@ export class BlockchainInMemory extends BaseBlockchain<
 
   async unsubscribeLockscript(
     lockscript: string | Uint8Array,
-    callback: BlockchainCallback<AddressStatusPayload>,
+    callback: BlockchainCallback,
   ): Promise<boolean> {
     // Fulcrum does not support subscribing to lockscripts, so we cast it to an address.
     const address = Address.fromLockscript(lockscript);
@@ -203,10 +196,7 @@ export class BlockchainInMemory extends BaseBlockchain<
     return await this.unsubscribeAddress(address.toCashAddr(), callback);
   }
 
-  async subscribeAddress(
-    address: string,
-    callback: BlockchainCallback<AddressStatusPayload>,
-  ) {
+  async subscribeAddress(address: string, callback: BlockchainCallback) {
     // Convert the address to it's lockscript hex so that it's consistently represented.
     const lockscriptHex = Address.from(address).toLockscriptHex();
 
@@ -222,10 +212,7 @@ export class BlockchainInMemory extends BaseBlockchain<
     return async () => await this.unsubscribeAddress(address, callback);
   }
 
-  async unsubscribeAddress(
-    address: string,
-    callback: BlockchainCallback<AddressStatusPayload>,
-  ) {
+  async unsubscribeAddress(address: string, callback: BlockchainCallback) {
     // Convert the address to it's lockscript hex so that it's consistently represented.
     const lockscriptHex = Address.from(address).toLockscriptHex();
 
@@ -282,12 +269,6 @@ export class BlockchainInMemory extends BaseBlockchain<
   }
 
   private notifyAddressSubscribers(tx: Transaction) {
-    const payload = {
-      type: 'address-status',
-      // 32 random characters. Since we only need this to be unique per transaction, we can just randomise the first 16 bytes and pad the rest with 0s.
-      status: Math.random().toString(36).substring(2).padEnd(32, '0'),
-    } as const;
-
     // First, notify all source output listeners.
     tx.getInputs().forEach((input) => {
       // Skip coinbase-like inputs
@@ -307,7 +288,7 @@ export class BlockchainInMemory extends BaseBlockchain<
       const callbacks = this.addressSubscriptions.get(address);
 
       if (callbacks) {
-        callbacks.forEach((callback) => callback(address, payload));
+        callbacks.forEach((callback) => callback(address));
       }
     });
 
@@ -320,7 +301,7 @@ export class BlockchainInMemory extends BaseBlockchain<
       const callbacks = this.addressSubscriptions.get(address);
 
       if (callbacks) {
-        callbacks.forEach((callback) => callback(address, payload));
+        callbacks.forEach((callback) => callback(address));
       }
     });
   }
diff --git a/packages/stack/src/wallet/wallet-p2pkh.ts b/packages/stack/src/wallet/wallet-p2pkh.ts
index 0d5c28f..6e729f1 100644
--- a/packages/stack/src/wallet/wallet-p2pkh.ts
+++ b/packages/stack/src/wallet/wallet-p2pkh.ts
@@ -380,14 +380,19 @@ export class WalletP2PKH extends BaseWallet {
     _address: string,
     payload?: AddressStatusPayload,
   ) {
-    // If wallet state has changed...
-    if (payload && payload.status !== this.status) {
+    // Not all blockchain adapters will provide a status payload. But if they do, we check if it's the same as our current status.
+    // If it is, we don't want the wallet to try to update its state as it will be the same and is a waste of resources.
+    if (payload && payload.status === this.status) {
+      return;
+    }
+
+    if (payload) {
       // Set our new status.
       this.status = payload.status;
-
-      // Emit an event.
-      this.emit('stateUpdated', this.status);
     }
+
+    // Emit an event.
+    this.emit('stateUpdated', this.status);
   }
 }