[WebGL] Implement Wallet.GetSignerAddress for Smart Wallets

Author: 0xFirekeeper

Assets/Thirdweb/Core/Plugin/thirdweb.jslib

@@ -413,6 +413,29 @@ var plugin = {
         dynCall_viii(cb, idPtr, null, buffer);
       });
   },
+  ThirdwebGetSignerAddress: async function (taskId, cb) {
+    // convert taskId from pointer to str and allocate it to keep in memory
+    var id = UTF8ToString(taskId);
+    var idSize = lengthBytesUTF8(id) + 1;
+    var idPtr = _malloc(idSize);
+    stringToUTF8(id, idPtr, idSize);
+    // execute bridge call
+    window.bridge
+      .getSignerAddress()
+      .then((returnStr) => {
+        var bufferSize = lengthBytesUTF8(returnStr) + 1;
+        var buffer = _malloc(bufferSize);
+        stringToUTF8(returnStr, buffer, bufferSize);
+        dynCall_viii(cb, idPtr, buffer, null);
+      })
+      .catch((err) => {
+        var msg = err.message;
+        var bufferSize = lengthBytesUTF8(msg) + 1;
+        var buffer = _malloc(bufferSize);
+        stringToUTF8(msg, buffer, bufferSize);
+        dynCall_viii(cb, idPtr, null, buffer);
+      });
+  },
 };
 
 mergeInto(LibraryManager.library, plugin);

Assets/Thirdweb/Core/Scripts/Bridge.cs

@@ -381,6 +381,23 @@ public static async Task<string> GetEmail()
             return JsonConvert.DeserializeObject<Result<string>>(result).result;
         }
 
+        public static async Task<string> GetSigner()
+        {
+            if (!Utils.IsWebGLBuild())
+            {
+                ThirdwebDebug.LogWarning("Interacting with the thirdweb SDK is not fully supported in the editor.");
+                return "";
+            }
+            string taskId = Guid.NewGuid().ToString();
+            var task = new TaskCompletionSource<string>();
+            taskMap[taskId] = task;
+#if UNITY_WEBGL
+            ThirdwebGetSignerAddress(taskId, jsCallback);
+#endif
+            string result = await task.Task;
+            return JsonConvert.DeserializeObject<Result<string>>(result).result;
+        }
+
 #if UNITY_WEBGL
         [DllImport("__Internal")]
         private static extern string ThirdwebInvoke(string taskId, string route, string payload, Action<string, string, string> cb);
@@ -418,6 +435,8 @@ public static async Task<string> GetEmail()
         private static extern string ThirdwebGetBlockWithTransactions(string taskId, string blockNumber, Action<string, string, string> cb);
         [DllImport("__Internal")]
         private static extern string ThirdwebGetEmail(string taskId, Action<string, string, string> cb);
+        [DllImport("__Internal")]
+        private static extern string ThirdwebGetSignerAddress(string taskId, Action<string, string, string> cb);
 #endif
     }
 }

Assets/Thirdweb/Core/Scripts/Wallet.cs

@@ -309,7 +309,18 @@ public async Task<string> GetSignerAddress()
         {
             if (Utils.IsWebGLBuild())
             {
-                return await GetAddress();
+                try
+                {
+                    var signer = await Bridge.GetSigner();
+                    if (string.IsNullOrEmpty(signer))
+                        return await GetAddress();
+                    else
+                        return signer;
+                }
+                catch
+                {
+                    return await GetAddress();
+                }
             }
             else
             {