Update useWebViewHandler for token transfer

Part of [Service provider auctions for web deployments](https://www.notion.so/Service-provider-auctions-for-web-deployments-104a6b22d47280dbad51d28aa3a91d75)

Reviewed-on: cerc-io/laconic-wallet-web#23
Co-authored-by: Nabarun <nabarun@deepstacksoft.com>
Co-committed-by: Nabarun <nabarun@deepstacksoft.com>

.env.example

@@ -1,5 +1,8 @@
 REACT_APP_WALLET_CONNECT_PROJECT_ID=
+
 REACT_APP_DEFAULT_GAS_PRICE=0.025
 # Reference: https://github.com/cosmos/cosmos-sdk/issues/16020
 REACT_APP_GAS_ADJUSTMENT=2
-REACT_APP_LACONICD_RPC_URL=https://laconicd.laconic.com
+REACT_APP_LACONICD_RPC_URL=https://laconicd-sapo.laconic.com
+
+REACT_APP_DEPLOY_APP_URL=

.eslintignore

@@ -0,0 +1 @@
+build

package.json

@@ -1,6 +1,6 @@
 {
   "name": "web-wallet",
-  "version": "0.1.2",
+  "version": "0.1.3",
   "private": true,
   "dependencies": {
     "@cerc-io/registry-sdk": "^0.2.5",

src/App.tsx

@@ -4,6 +4,8 @@ import { TxBody, AuthInfo } from "cosmjs-types/cosmos/tx/v1beta1/tx";
 
 import { SignClientTypes } from "@walletconnect/types";
 import { useNavigation } from "@react-navigation/native";
+import { DirectSecp256k1Wallet } from "@cosmjs/proto-signing";
+import { SigningStargateClient } from "@cosmjs/stargate";
 import {
   createStackNavigator,
   StackNavigationProp,
@@ -34,6 +36,11 @@ import { NETWORK_METHODS } from "./utils/wallet-connect/common-data";
 import { COSMOS_METHODS } from "./utils/wallet-connect/COSMOSData";
 import styles from "./styles/stylesheet";
 import { Header } from "./components/Header";
+import { WalletEmbed } from "./screens/WalletEmbed";
+import { AutoSignIn } from "./screens/AutoSignIn";
+import { checkSufficientFunds, getPathKey, sendMessage } from "./utils/misc";
+import useAccountsData from "./hooks/useAccountsData";
+import { useWebViewHandler } from "./hooks/useWebViewHandler";
 
 const Stack = createStackNavigator<StackParamsList>();
 
@@ -43,6 +50,8 @@ const App = (): React.JSX.Element => {
   const { web3wallet, setActiveSessions } = useWalletConnect();
   const { accounts, setCurrentIndex } = useAccounts();
   const { networksData, selectedNetwork, setSelectedNetwork } = useNetworks();
+  const { getAccountsData } = useAccountsData();
+
   const [modalVisible, setModalVisible] = useState(false);
   const [toastVisible, setToastVisible] = useState(false);
   const [currentProposal, setCurrentProposal] = useState<
@@ -217,8 +226,62 @@ const App = (): React.JSX.Element => {
     };
   });
 
+  useEffect(() => {
+    const handleCheckBalance = async (event: MessageEvent) => {
+      if (event.data.type !== 'CHECK_BALANCE') return;
+
+      const { chainId, amount } = event.data;
+      const network = networksData.find(net => net.chainId === chainId);
+
+      if (!network) {
+        console.error('Network not found');
+        throw new Error('Requested network not supported.');
+      }
+
+      if (network.namespace !== COSMOS) {
+        throw new Error('Unsupported network');
+      }
+
+      const accounts = await getAccountsData(chainId);
+      const account = accounts[0];
+
+      if (!account) {
+        throw new Error(`No accounts in network ${chainId}`);
+      }
+
+
+      const cosmosPrivKey = (
+        await getPathKey(`${network.namespace}:${chainId}`, account.index)
+      ).privKey;
+
+      const sender = await DirectSecp256k1Wallet.fromKey(
+        Buffer.from(cosmosPrivKey.split('0x')[1], 'hex'),
+        network.addressPrefix
+      );
+
+      const client = await SigningStargateClient.connectWithSigner(network.rpcUrl!, sender);
+
+      const balance = await client.getBalance(
+        account.address,
+        network.nativeDenom!.toLowerCase()
+      );
+
+      const areFundsSufficient = checkSufficientFunds(amount, balance.amount);
+
+      sendMessage(event.source as Window, 'IS_SUFFICIENT', areFundsSufficient, event.origin);
+    };
+
+    window.addEventListener('message', handleCheckBalance);
+
+    return () => {
+      window.removeEventListener('message', handleCheckBalance);
+    };
+  }, [networksData, getAccountsData]);
+
   const showWalletConnect = useMemo(() => accounts.length > 0, [accounts]);
 
+  useWebViewHandler();
+
   return (
     <Surface style={styles.appSurface}>
       <Stack.Navigator
@@ -313,6 +376,20 @@ const App = (): React.JSX.Element => {
             header: () => <Header title="Wallet" />,
           }}
         />
+        <Stack.Screen
+          name="wallet-embed"
+          component={WalletEmbed}
+          options={{
+            header: () => <></>,
+          }}
+        />
+        <Stack.Screen
+          name="auto-sign-in"
+          component={AutoSignIn}
+          options={{
+            header: () => <></>,
+          }}
+        />
       </Stack.Navigator>
       <PairingModal
         visible={modalVisible}

src/context/NetworksContext.tsx

@@ -1,8 +1,9 @@
 import React, { createContext, useContext, useEffect, useState } from 'react';
 
 import { NetworksDataState } from '../types';
-import { retrieveNetworksData, storeNetworkData } from '../utils/accounts';
+import { retrieveNetworksData } from '../utils/accounts';
 import { DEFAULT_NETWORKS, EIP155 } from '../utils/constants';
+import { setInternetCredentials } from '../utils/key-store';
 
 const NetworksContext = createContext<{
   networksData: NetworksDataState[];
@@ -27,28 +28,38 @@ const useNetworks = () => {
   return networksContext;
 };
 
+const DEFAULT_NETWORKS_DATA = DEFAULT_NETWORKS.map((defaultNetwork, index) => (
+  {
+    ...defaultNetwork,
+    networkId: index.toString()
+  })
+);
+
 const NetworksProvider = ({ children }: { children: React.ReactNode }) => {
-  const [networksData, setNetworksData] = useState<NetworksDataState[]>([]);
+  const [networksData, setNetworksData] = useState<NetworksDataState[]>(DEFAULT_NETWORKS_DATA);
   const [networkType, setNetworkType] = useState<string>(EIP155);
   const [selectedNetwork, setSelectedNetwork] = useState<NetworksDataState>();
 
   useEffect(() => {
     const fetchData = async () => {
-      const retrievedNetworks = await retrieveNetworksData();
+      let retrievedNetworks = await retrieveNetworksData();
+
       if (retrievedNetworks.length === 0) {
-        for (const defaultNetwork of DEFAULT_NETWORKS) {
-          await storeNetworkData(defaultNetwork);
-        }
+        setInternetCredentials(
+          'networks',
+          '_',
+          JSON.stringify(DEFAULT_NETWORKS_DATA),
+        );
+
+        retrievedNetworks = DEFAULT_NETWORKS_DATA;
       }
-      const retrievedNewNetworks = await retrieveNetworksData();
-      setNetworksData(retrievedNewNetworks);
-      setSelectedNetwork(retrievedNewNetworks[0]);
+
+      setNetworksData(retrievedNetworks);
+      setSelectedNetwork(retrievedNetworks[0]);
     };
 
-    if (networksData.length === 0) {
-      fetchData();
-    }
-  }, [networksData]);
+    fetchData();
+  }, []);
 
   useEffect(() => {
     setSelectedNetwork(prevSelectedNetwork => {

src/global.d.ts

@@ -0,0 +1,36 @@
+// Extends the Window interface for Android WebView communication
+declare global {
+  interface Window {
+    // Android bridge callbacks for signature and accounts related events
+    Android?: {
+      // Called when signature is successfully generated
+      onSignatureComplete?: (signature: string) => void;
+
+      // Called when signature generation fails
+      onSignatureError?: (error: string) => void;
+
+      // Called when signature process is cancelled
+      onSignatureCancelled?: () => void;
+
+      // Called when accounts are ready for use
+      onAccountsReady?: () => void;
+
+      // Called when transfer is successfully completed
+      onTransferComplete?: (result: string) => void;
+
+      // Called when transfer fails
+      onTransferError?: (error: string) => void;
+
+      // Called when transfer is cancelled
+      onTransferCancelled?: () => void;
+    };
+
+    // Handles incoming signature requests from Android
+    receiveSignRequestFromAndroid?: (message: string) => void;
+
+    // Handles incoming transfer requests from Android
+    receiveTransferRequestFromAndroid?: (to: string, amount: string) => void;
+  }
+}
+
+export {};

src/hooks/useAccountsData.ts

@@ -0,0 +1,23 @@
+import { useCallback } from "react";
+
+import { retrieveAccounts } from "../utils/accounts";
+import { useNetworks } from "../context/NetworksContext";
+
+const useAccountsData = () => {
+  const { networksData } = useNetworks();
+
+  const getAccountsData = useCallback(async (chainId: string) => {
+    const targetNetwork = networksData.find(network => network.chainId === chainId);
+
+    if (!targetNetwork) {
+      return [];
+    }
+
+    const accounts = await retrieveAccounts(targetNetwork);
+    return accounts || [];
+  }, [networksData]);
+
+  return { getAccountsData };
+};
+
+export default useAccountsData;

src/hooks/useGetOrCreateAccounts.ts

@@ -0,0 +1,71 @@
+import { useEffect, useCallback } from "react";
+
+import { createWallet } from "../utils/accounts";
+import { sendMessage } from "../utils/misc";
+import useAccountsData from "./useAccountsData";
+import { useNetworks } from "../context/NetworksContext";
+
+const useGetOrCreateAccounts = () => {
+  const { networksData } = useNetworks();
+  const { getAccountsData } = useAccountsData();
+
+  // Wrap the function in useCallback to prevent recreation on each render
+  const getOrCreateAccountsForChain = useCallback(async (chainId: string) => {
+    let accountsData = await getAccountsData(chainId);
+
+    if (accountsData.length === 0) {
+      console.log("Accounts not found, creating wallet...");
+      await createWallet(networksData);
+      accountsData = await getAccountsData(chainId);
+    }
+
+    return accountsData;
+  }, [networksData, getAccountsData]);
+
+  useEffect(() => {
+    const handleCreateAccounts = async (event: MessageEvent) => {
+      if (event.data.type !== 'REQUEST_CREATE_OR_GET_ACCOUNTS') return;
+
+      const accountsData = await getOrCreateAccountsForChain(event.data.chainId);
+
+      sendMessage(
+        event.source as Window, 'WALLET_ACCOUNTS_DATA',
+        accountsData.map(account => account.address),
+        event.origin
+      );
+    };
+
+    const autoCreateAccounts = async () => {
+      const defaultChainId = networksData[0]?.chainId;
+      
+      if (!defaultChainId) {
+        console.log('useGetOrCreateAccounts: No default chainId found');
+        return;
+      }
+
+      await getOrCreateAccountsForChain(defaultChainId);
+
+      // Notify Android that accounts are ready
+      if (window.Android?.onAccountsReady) {
+        window.Android.onAccountsReady();
+      } else {
+        console.log('useGetOrCreateAccounts: Android bridge not available');
+      }
+    };
+
+    window.addEventListener('message', handleCreateAccounts);
+
+    const isAndroidWebView = !!(window.Android);
+    
+    // TODO: Call method to auto create accounts from android app
+    if (isAndroidWebView) {
+      autoCreateAccounts();
+    }
+
+    return () => {
+      window.removeEventListener('message', handleCreateAccounts);
+    };
+  }, [networksData, getAccountsData, getOrCreateAccountsForChain]);
+};
+
+export default useGetOrCreateAccounts;

src/hooks/useWebViewHandler.ts

@@ -0,0 +1,176 @@
+import { useEffect, useCallback } from 'react';
+import { useNavigation } from '@react-navigation/native';
+import { NativeStackNavigationProp } from '@react-navigation/native-stack';
+
+import { useAccounts } from '../context/AccountsContext';
+import { useNetworks } from '../context/NetworksContext';
+import { StackParamsList } from '../types';
+import useGetOrCreateAccounts from './useGetOrCreateAccounts';
+import { retrieveAccountsForNetwork } from '../utils/accounts';
+
+export const useWebViewHandler = () => {
+  // Navigation and context hooks
+  const navigation = useNavigation<NativeStackNavigationProp<StackParamsList>>();
+  const { selectedNetwork } = useNetworks();
+  const { accounts, currentIndex } = useAccounts();
+  
+  // Initialize accounts
+  useGetOrCreateAccounts();
+  
+  // Core navigation handler
+  const navigateToSignRequest = useCallback((message: string) => {
+    try {
+      // Validation checks
+      if (!selectedNetwork?.namespace || !selectedNetwork?.chainId) {
+        window.Android?.onSignatureError?.('Invalid network configuration');
+        return;
+      }
+
+      if (!accounts?.length) {
+        window.Android?.onSignatureError?.('No accounts available');
+        return;
+      }
+
+      const currentAccount = accounts[currentIndex];
+      if (!currentAccount) {
+        window.Android?.onSignatureError?.('Current account not found');
+        return;
+      }
+
+      // Create the path and validate with regex
+      const path = `/sign/${selectedNetwork.namespace}/${selectedNetwork.chainId}/${currentAccount.address}/${encodeURIComponent(message)}`;
+      const pathRegex = /^\/sign\/(eip155|cosmos)\/(.+)\/(.+)\/(.+)$/;
+      const match = path.match(pathRegex);
+      
+      if (!match) {
+        window.Android?.onSignatureError?.('Invalid signing path');
+        return;
+      }
+
+      const [, pathNamespace, pathChainId, pathAddress, pathMessage] = match;
+
+      // Reset navigation stack and navigate to sign request
+      navigation.reset({
+        index: 0,
+        routes: [
+          {
+            name: 'SignRequest',
+            path,
+            params: {
+              namespace: pathNamespace,
+              chainId: pathChainId,
+              address: pathAddress,
+              message: decodeURIComponent(pathMessage),
+              accountInfo: currentAccount,
+            },
+          },
+        ],
+      });
+    } catch (error) {
+      window.Android?.onSignatureError?.(`Navigation error: ${error}`);
+    }
+  }, [selectedNetwork, accounts, currentIndex, navigation]);
+
+  // Handle incoming transfer requests
+  const navigateToTransfer = useCallback(async (to: string, amount: string) => {
+    if (!accounts || accounts.length === 0) {
+      console.error('No accounts available');
+      if (window.Android?.onTransferError) {
+        window.Android.onTransferError('No accounts available');
+      }
+      return;
+    }
+
+    const currentAccount = accounts[currentIndex];
+    if (!currentAccount) {
+      console.error('Current account not found');
+      if (window.Android?.onTransferError) {
+        window.Android.onTransferError('Current account not found');
+      }
+      return;
+    }
+
+    // Use Cosmos Hub Testnet network
+    const cosmosHubTestnet = {
+      namespace: 'cosmos',
+      chainId: 'provider',
+      addressPrefix: 'cosmos'
+    };
+
+    try {
+      // Get all accounts for Cosmos Hub Testnet
+      const cosmosAccounts = await retrieveAccountsForNetwork(
+        `${cosmosHubTestnet.namespace}:${cosmosHubTestnet.chainId}`,
+        '0' // Use the first account
+      );
+
+      if (!cosmosAccounts || cosmosAccounts.length === 0) {
+        console.error('No Cosmos Hub Testnet accounts found');
+        if (window.Android?.onTransferError) {
+          window.Android.onTransferError('No Cosmos Hub Testnet accounts found');
+        }
+        return;
+      }
+
+      const cosmosAccount = cosmosAccounts[0]; // Use the first account
+
+      const path = `/transfer/${cosmosHubTestnet.namespace}/${cosmosHubTestnet.chainId}/${cosmosAccount.address}/${to}/${amount}`;
+      
+      const pathRegex = /^\/transfer\/(eip155|cosmos)\/(.+)\/(.+)\/(.+)\/(.+)$/;
+      if (!pathRegex.test(path)) {
+        console.error('Path does not match expected pattern:', path);
+        if (window.Android?.onTransferError) {
+          window.Android.onTransferError('Invalid path format');
+        }
+        return;
+      }
+
+      const match = path.match(pathRegex);
+      if (!match) {
+        console.error('Failed to parse path:', path);
+        if (window.Android?.onTransferError) {
+          window.Android.onTransferError('Failed to parse path');
+        }
+        return;
+      }
+      
+      navigation.reset({
+        index: 0,
+        routes: [
+          {
+            name: 'ApproveTransfer',
+            path: `/transfer/${cosmosHubTestnet.namespace}/${cosmosHubTestnet.chainId}/${cosmosAccount.address}/${to}/${amount}`,
+            params: {
+              namespace: cosmosHubTestnet.namespace,
+              chainId: `${cosmosHubTestnet.namespace}:${cosmosHubTestnet.chainId}`,
+              transaction: {
+                from: cosmosAccount.address,
+                to: to,
+                value: amount,
+                data: ''
+              },
+              accountInfo: cosmosAccount,
+            },
+          },
+        ],
+      });
+    } catch (error) {
+      console.error('Navigation error:', error);
+      if (window.Android?.onTransferError) {
+        window.Android.onTransferError(`Navigation error: ${error}`);
+      }
+    }
+  }, [accounts, currentIndex, navigation]);
+
+  useEffect(() => {
+    // Assign the function to the window object
+    window.receiveSignRequestFromAndroid = navigateToSignRequest;
+
+    window.receiveTransferRequestFromAndroid = navigateToTransfer;
+    
+    return () => {
+      window.receiveSignRequestFromAndroid = undefined;
+      window.receiveTransferRequestFromAndroid = undefined;
+    };
+  }, [navigateToSignRequest, navigateToTransfer]); // Only the function reference as dependency
+};

src/screens/ApproveTransfer.tsx

@@ -46,24 +46,29 @@ export const MEMO = 'Sending signed tx from Laconic Wallet';
 // Reference: https://ethereum.org/en/developers/docs/gas/#what-is-gas-limit
 const ETH_MINIMUM_GAS = 21000;
 
-type SignRequestProps = NativeStackScreenProps<
-  StackParamsList,
-  'ApproveTransfer'
->;
+type ApproveTransferProps = NativeStackScreenProps<StackParamsList, 'ApproveTransfer'> & {
+  route: {
+    params: {
+      transaction: any;
+      requestEvent?: {
+        params: {
+          chainId: string;
+          request: {
+            method: string;
+          };
+        };
+      };
+      requestSessionData?: any;
+      chainId?: string;
+    };
+    path?: string;
+  };
+};
 
-const ApproveTransfer = ({ route }: SignRequestProps) => {
+const ApproveTransfer = ({ route }: ApproveTransferProps) => {
   const { networksData } = useNetworks();
   const { web3wallet } = useWalletConnect();
 
-  const requestSession = route.params.requestSessionData;
-  const requestName = requestSession.peer.metadata.name;
-  const requestIcon = requestSession.peer.metadata.icons[0];
-  const requestURL = requestSession.peer.metadata.url;
-  const transaction = route.params.transaction;
-  const requestEvent = route.params.requestEvent;
-  const chainId = requestEvent.params.chainId;
-  const requestMethod = requestEvent.params.request.method;
-
   const [account, setAccount] = useState<Account>();
   const [isLoading, setIsLoading] = useState(true);
   const [balance, setBalance] = useState<string>('');
@@ -80,6 +85,80 @@ const ApproveTransfer = ({ route }: SignRequestProps) => {
   const [ethMaxPriorityFee, setEthMaxPriorityFee] =
     useState<BigNumber | null>();
 
+  const navigation =
+    useNavigation<NativeStackNavigationProp<StackParamsList>>();
+
+  // Extract data from route params or path
+  const requestSession = route.params?.requestSessionData;
+  const requestName = requestSession?.peer?.metadata?.name;
+  const requestIcon = requestSession?.peer?.metadata?.icons?.[0];
+  const requestURL = requestSession?.peer?.metadata?.url;
+  const transaction = route.params?.transaction;
+  const requestEvent = route.params?.requestEvent;
+  const chainId = requestEvent?.params?.chainId || route.params?.chainId;
+  const requestMethod = requestEvent?.params?.request?.method;
+
+  const sanitizePath = useCallback((path: string) => {
+    const regex = /^\/transfer\/(eip155|cosmos)\/(.+)\/(.+)\/(.+)\/(.+)$/;
+    const match = path.match(regex);
+    if (match) {
+      const [, pathNamespace, pathChainId, pathAddress, pathTo, pathAmount] = match;
+      return {
+        namespace: pathNamespace,
+        chainId: pathChainId,
+        address: pathAddress,
+        to: pathTo,
+        amount: pathAmount,
+      };
+    } else {
+      navigation.navigate('InvalidPath');
+    }
+    return null;
+  }, [navigation]);
+
+  const retrieveData = useCallback(async (requestNamespace: string, requestChainId: string, requestAddress: string) => {
+    const requestAccount = await retrieveSingleAccount(
+      requestNamespace,
+      requestChainId,
+      requestAddress,
+    );
+    if (!requestAccount) {
+      navigation.navigate('InvalidPath');
+      return;
+    }
+
+    setAccount(requestAccount);
+  }, [navigation]);
+
+  useEffect(() => {
+    if (route.path) {
+      const sanitizedRoute = sanitizePath(route.path);
+      if (sanitizedRoute) {
+        retrieveData(
+          sanitizedRoute.namespace,
+          sanitizedRoute.chainId,
+          sanitizedRoute.address,
+        );
+        return;
+      }
+    }
+
+    if (requestEvent) {
+      const requestedNetwork = networksData.find(
+        networkData => {
+          return `${networkData.namespace}:${networkData.chainId}` === chainId;
+        }
+      );
+      if (requestedNetwork && transaction?.from) {
+        retrieveData(
+          requestedNetwork.namespace,
+          requestedNetwork.chainId,
+          transaction.from,
+        );
+      }
+    }
+  }, [retrieveData, sanitizePath, route, networksData, requestEvent, chainId, transaction]);
+
   const isSufficientFunds = useMemo(() => {
     if (!transaction.value) {
       return;
@@ -139,7 +218,7 @@ const ApproveTransfer = ({ route }: SignRequestProps) => {
       ).privKey;
 
       const sender = await DirectSecp256k1Wallet.fromKey(
-        Buffer.from(cosmosPrivKey.split('0x')[1], 'hex'),
+        Uint8Array.from(Buffer.from(cosmosPrivKey.split('0x')[1], 'hex')),
         requestedNetwork?.addressPrefix,
       );
 
@@ -185,26 +264,6 @@ const ApproveTransfer = ({ route }: SignRequestProps) => {
     }
   }, [requestedNetwork, namespace]);
 
-  const navigation =
-    useNavigation<NativeStackNavigationProp<StackParamsList>>();
-
-  const retrieveData = useCallback(
-    async (requestAddress: string) => {
-      const requestAccount = await retrieveSingleAccount(
-        requestedNetwork!.namespace,
-        requestedNetwork!.chainId,
-        requestAddress,
-      );
-      if (!requestAccount) {
-        navigation.navigate('InvalidPath');
-        return;
-      }
-
-      setAccount(requestAccount);
-    },
-    [navigation, requestedNetwork],
-  );
-
   useEffect(() => {
     // Set loading to false when gas values for requested chain are fetched
     // If requested chain is EVM compatible, the cosmos gas values will be undefined and vice-versa, hence the condition checks only one of them at the same time
@@ -246,9 +305,6 @@ const ApproveTransfer = ({ route }: SignRequestProps) => {
     requestedNetwork,
     ethMaxFee,
   ]);
-  useEffect(() => {
-    retrieveData(transaction.from!);
-  }, [retrieveData, transaction]);
 
   const isEIP1559 = useMemo(() => {
     if (cosmosGasLimit) {
@@ -260,6 +316,101 @@ const ApproveTransfer = ({ route }: SignRequestProps) => {
     return false;
   }, [cosmosGasLimit, ethMaxFee, ethMaxPriorityFee]);
 
+  const handleIntent = async () => {
+    if (!account) {
+      throw new Error('Account is not valid');
+    }
+
+    if (route.path) {
+      const sanitizedRoute = sanitizePath(route.path);
+      if (!sanitizedRoute) {
+        throw new Error('Invalid path');
+      }
+
+      const requestedNetwork = networksData.find(
+        networkData => networkData.chainId === sanitizedRoute.chainId,
+      );
+
+      if (!requestedNetwork) {
+        throw new Error('Network not found');
+      }
+
+      const cosmosPrivKey = (
+        await getPathKey(
+          `${requestedNetwork.namespace}:${requestedNetwork.chainId}`,
+          account.index,
+        )
+      ).privKey;
+
+      const sender = await DirectSecp256k1Wallet.fromKey(
+        Uint8Array.from(Buffer.from(cosmosPrivKey.split('0x')[1], 'hex')),
+        requestedNetwork.addressPrefix,
+      );
+
+      const client = await SigningStargateClient.connectWithSigner(
+        requestedNetwork.rpcUrl!,
+        sender,
+      );
+
+      const sendMsg: MsgSendEncodeObject = {
+        typeUrl: '/cosmos.bank.v1beta1.MsgSend',
+        value: {
+          fromAddress: account.address,
+          toAddress: sanitizedRoute.to,
+          amount: [
+            {
+              amount: String(sanitizedRoute.amount),
+              denom: requestedNetwork.nativeDenom!,
+            },
+          ],
+        },
+      };
+
+      const gasEstimation = await client.simulate(
+        account.address,
+        [sendMsg],
+        MEMO,
+      );
+
+      const gasLimit = String(
+        Math.round(gasEstimation * Number(process.env.REACT_APP_GAS_ADJUSTMENT)),
+      );
+
+      const gasPrice = GasPrice.fromString(
+        requestedNetwork.gasPrice! + requestedNetwork.nativeDenom,
+      );
+
+      const cosmosFees = calculateFee(Number(gasLimit), gasPrice);
+
+      const result = await client.signAndBroadcast(
+        account.address,
+        [sendMsg],
+        {
+          amount: [
+            {
+              amount: cosmosFees.amount[0].amount,
+              denom: requestedNetwork.nativeDenom!,
+            },
+          ],
+          gas: gasLimit,
+        },
+        MEMO,
+      );
+
+      // Convert BigInt values to strings before sending to Android
+      const serializedResult = JSON.stringify(result, (key, value) => 
+        typeof value === 'bigint' ? value.toString() : value
+      );
+
+      // Send the result back to Android and close dialog
+      if (window.Android?.onTransferComplete) {
+        window.Android.onTransferComplete(serializedResult);
+      } else {
+        alert(`Transaction: ${serializedResult}`);
+      }
+    }
+  };
+
   const acceptRequestHandler = async () => {
     setIsTxLoading(true);
     try {
@@ -267,77 +418,80 @@ const ApproveTransfer = ({ route }: SignRequestProps) => {
         throw new Error('account not found');
       }
 
-      if (ethGasLimit && ethGasLimit.lt(ETH_MINIMUM_GAS)) {
-        throw new Error(`Atleast ${ETH_MINIMUM_GAS} gas limit is required`);
-      }
+      if (requestEvent) {
+        // Handle WalletConnect request
+        if (ethGasLimit && ethGasLimit.lt(ETH_MINIMUM_GAS)) {
+          throw new Error(`Atleast ${ETH_MINIMUM_GAS} gas limit is required`);
+        }
 
-      if (ethMaxFee && ethMaxPriorityFee && ethMaxFee.lte(ethMaxPriorityFee)) {
-        throw new Error(
-          `Max fee per gas (${ethMaxFee.toNumber()}) cannot be lower than or equal to max priority fee per gas (${ethMaxPriorityFee.toNumber()})`,
+        if (ethMaxFee && ethMaxPriorityFee && ethMaxFee.lte(ethMaxPriorityFee)) {
+          throw new Error(
+            `Max fee per gas (${ethMaxFee.toNumber()}) cannot be lower than or equal to max priority fee per gas (${ethMaxPriorityFee.toNumber()})`,
+          );
+        }
+
+        let options: WalletConnectRequests;
+
+        switch (requestMethod) {
+          case EIP155_SIGNING_METHODS.ETH_SEND_TRANSACTION:
+            if (
+              ethMaxFee === undefined ||
+              ethMaxPriorityFee === undefined ||
+              ethGasPrice === undefined
+            ) {
+              throw new Error('Gas values not found');
+            }
+
+            options = {
+              type: 'eth_sendTransaction',
+              provider: provider!,
+              ethGasLimit: BigNumber.from(ethGasLimit),
+              ethGasPrice: ethGasPrice ? ethGasPrice.toHexString() : null,
+              maxFeePerGas: ethMaxFee,
+              maxPriorityFeePerGas: ethMaxPriorityFee,
+            };
+            break;
+          case COSMOS_METHODS.COSMOS_SEND_TOKENS:
+            if (!cosmosStargateClient) {
+              throw new Error('Cosmos stargate client not found');
+            }
+
+            options = {
+              type: 'cosmos_sendTokens',
+              signingStargateClient: cosmosStargateClient,
+              cosmosFee: {
+                amount: [
+                  {
+                    amount: fees,
+                    denom: requestedNetwork!.nativeDenom!,
+                  },
+                ],
+                gas: cosmosGasLimit,
+              },
+              sendMsg,
+              memo: MEMO,
+            };
+            break;
+          default:
+            throw new Error('Invalid method');
+        }
+
+        const response = await approveWalletConnectRequest(
+          requestEvent,
+          account!,
+          namespace,
+          requestedNetwork!.chainId,
+          options,
         );
+
+        const { topic } = requestEvent;
+        await web3wallet!.respondSessionRequest({ topic, response });
+        navigation.navigate('Home');
+      } else {
+        // Handle direct intent
+        await handleIntent();
+        navigation.navigate('Home');
       }
-
-      let options: WalletConnectRequests;
-
-      switch (requestMethod) {
-        case EIP155_SIGNING_METHODS.ETH_SEND_TRANSACTION:
-          if (
-            ethMaxFee === undefined ||
-            ethMaxPriorityFee === undefined ||
-            ethGasPrice === undefined
-          ) {
-            throw new Error('Gas values not found');
-          }
-
-          options = {
-            type: 'eth_sendTransaction',
-            provider: provider!,
-            ethGasLimit: BigNumber.from(ethGasLimit),
-            ethGasPrice: ethGasPrice ? ethGasPrice.toHexString() : null,
-            maxFeePerGas: ethMaxFee,
-            maxPriorityFeePerGas: ethMaxPriorityFee,
-          };
-          break;
-        case COSMOS_METHODS.COSMOS_SEND_TOKENS:
-          if (!cosmosStargateClient) {
-            throw new Error('Cosmos stargate client not found');
-          }
-
-          options = {
-            type: 'cosmos_sendTokens',
-            signingStargateClient: cosmosStargateClient,
-            // StdFee object
-            cosmosFee: {
-              // This amount is total fees required for transaction
-              amount: [
-                {
-                  amount: fees,
-                  denom: requestedNetwork!.nativeDenom!,
-                },
-              ],
-              gas: cosmosGasLimit,
-            },
-            sendMsg,
-            memo: MEMO,
-          };
-
-          break;
-
-        default:
-          throw new Error('Invalid method');
-      }
-
-      const response = await approveWalletConnectRequest(
-        requestEvent,
-        account,
-        namespace,
-        requestedNetwork!.chainId,
-        options,
-      );
-
-      const { topic } = requestEvent;
-      await web3wallet!.respondSessionRequest({ topic, response });
-      navigation.navigate('Home');
     } catch (error) {
       if (!(error instanceof Error)) {
         throw error;
@@ -350,20 +504,26 @@ const ApproveTransfer = ({ route }: SignRequestProps) => {
   };
 
   const rejectRequestHandler = async () => {
-    const response = rejectWalletConnectRequest(requestEvent);
-    const { topic } = requestEvent;
-    await web3wallet!.respondSessionRequest({
-      topic,
-      response,
-    });
+    if (requestEvent) {
+      const response = rejectWalletConnectRequest(requestEvent);
+      const { topic } = requestEvent;
+      await web3wallet!.respondSessionRequest({
+        topic,
+        response,
+      });
+    }
 
-    navigation.navigate('Home');
+    if (window.Android?.onTransferCancelled) {
+      window.Android.onTransferCancelled();
+    } else {
+      navigation.navigate('Home');
+    }
   };
 
   useEffect(() => {
     const getAccountBalance = async () => {
       try {
-        if (!account) {
+        if (!account || !requestedNetwork) {
           return;
         }
         if (namespace === EIP155) {
@@ -373,20 +533,20 @@ const ApproveTransfer = ({ route }: SignRequestProps) => {
           const fetchedBalance = await provider.getBalance(account.address);
           setBalance(fetchedBalance ? fetchedBalance.toString() : '0');
         } else {
-          const cosmosBalance = await cosmosStargateClient?.getBalance(
+          if (!cosmosStargateClient) {
+            return;
+          }
+          const cosmosBalance = await cosmosStargateClient.getBalance(
             account.address,
-            requestedNetwork!.nativeDenom!.toLowerCase(),
+            requestedNetwork.nativeDenom!.toLowerCase(),
           );
-
-          setBalance(cosmosBalance?.amount!);
+          setBalance(cosmosBalance?.amount || '0');
         }
       } catch (error) {
-        if (!(error instanceof Error)) {
-          throw error;
-        }
-
-        setTxError(error.message);
-        setIsTxErrorDialogOpen(true);
+        console.error('Error fetching balance:', error);
+        setBalance('0');
+        // Don't show error dialog for balance fetch failures
+        // Just set balance to 0 and let the transaction proceed
       }
     };
 
@@ -508,16 +668,18 @@ const ApproveTransfer = ({ route }: SignRequestProps) => {
       ) : (
         <>
           <ScrollView contentContainerStyle={styles.appContainer}>
-            <View style={styles.dappDetails}>
-              {requestIcon && (
-                <Image
-                  style={styles.dappLogo}
-                  source={requestIcon ? { uri: requestIcon } : undefined}
-                />
-              )}
-              <Text>{requestName}</Text>
-              <Text variant="bodyMedium">{requestURL}</Text>
-            </View>
+            {requestSession && (
+              <View style={styles.dappDetails}>
+                {requestIcon && (
+                  <Image
+                    style={styles.dappLogo}
+                    source={requestIcon ? { uri: requestIcon } : undefined}
+                  />
+                )}
+                <Text>{requestName}</Text>
+                <Text variant="bodyMedium">{requestURL}</Text>
+              </View>
+            )}
             <View style={styles.dataBoxContainer}>
               <Text style={styles.dataBoxLabel}>From</Text>
               <View style={styles.dataBox}>
@@ -528,11 +690,7 @@ const ApproveTransfer = ({ route }: SignRequestProps) => {
               label={`Balance (${
                 namespace === EIP155 ? 'wei' : requestedNetwork!.nativeDenom
               })`}
-              data={
-                balance === '' || balance === undefined
-                  ? 'Loading balance...'
-                  : `${balance}`
-              }
+              data={balance || '0'}
             />
             {transaction && (
               <View style={styles.approveTransfer}>

src/screens/AutoSignIn.tsx

@@ -0,0 +1,49 @@
+import React, { useEffect } from 'react';
+
+import { useNetworks } from '../context/NetworksContext';
+import { signMessage } from '../utils/sign-message';
+import { EIP155 } from '../utils/constants';
+import { sendMessage } from '../utils/misc';
+import useAccountsData from '../hooks/useAccountsData';
+import useGetOrCreateAccounts from '../hooks/useGetOrCreateAccounts';
+
+export const AutoSignIn = () => {
+  const { networksData } = useNetworks();
+
+  const { getAccountsData } = useAccountsData();
+
+  useEffect(() => {
+    const handleSignIn = async (event: MessageEvent) => {
+      if (event.data.type !== 'AUTO_SIGN_IN') return;
+
+      if (event.origin !== process.env.REACT_APP_DEPLOY_APP_URL) {
+        console.log('Unauthorized app.');
+        return;
+      }
+
+      const accountsData = await getAccountsData(event.data.chainId);
+
+      if (!accountsData.length) {
+        return
+      }
+
+      const signature = await signMessage({ message: event.data.message, accountId: accountsData[0].index, chainId: event.data.chainId, namespace: EIP155 })
+
+      sendMessage(event.source as Window, 'SIGN_IN_RESPONSE', { message: event.data.message, signature }, event.origin);
+    };
+
+    window.addEventListener('message', handleSignIn);
+
+    return () => {
+      window.removeEventListener('message', handleSignIn);
+    };
+  }, [networksData, getAccountsData]);
+
+  // Custom hook for adding listener to get accounts data
+  useGetOrCreateAccounts();
+
+  return (
+    <>
+    </>
+  )
+};

src/screens/SignRequest.tsx

@@ -202,7 +202,13 @@ const SignRequest = ({ route }: SignRequestProps) => {
         chainId,
         accountId: account.index,
       });
-      alert(`Signature ${signedMessage}`);
+      
+      // Send the result back to Android and close dialog
+      if (window.Android?.onSignatureComplete) {
+        window.Android.onSignatureComplete(signedMessage || "");
+      } else {
+        alert(`Signature: ${signedMessage}`);
+      }
     }
   };
 
@@ -230,7 +236,11 @@ const SignRequest = ({ route }: SignRequestProps) => {
     }
 
     setIsRejecting(false);
-    navigation.navigate('Home');
+    if (window.Android?.onSignatureCancelled) {
+      window.Android.onSignatureCancelled();
+    } else {
+      navigation.navigate('Home');
+    }
   };
 
   useEffect(() => {

src/screens/WalletEmbed.tsx

@@ -0,0 +1,317 @@
+import React, { useEffect, useState, useCallback, useRef } from 'react';
+import { ScrollView, View } from 'react-native';
+import {
+  ActivityIndicator,
+  Button,
+  Text,
+  TextInput,
+} from 'react-native-paper';
+import { BigNumber } from 'ethers';
+
+import { DirectSecp256k1Wallet } from '@cosmjs/proto-signing';
+import {
+  calculateFee,
+  GasPrice,
+  SigningStargateClient,
+} from '@cosmjs/stargate';
+
+import { retrieveSingleAccount } from '../utils/accounts';
+import AccountDetails from '../components/AccountDetails';
+import styles from '../styles/stylesheet';
+import DataBox from '../components/DataBox';
+import { checkSufficientFunds, getPathKey, sendMessage } from '../utils/misc';
+import { useNetworks } from '../context/NetworksContext';
+import TxErrorDialog from '../components/TxErrorDialog';
+import { MEMO } from '../screens/ApproveTransfer';
+import { Account, NetworksDataState } from '../types';
+import useGetOrCreateAccounts from '../hooks/useGetOrCreateAccounts';
+import useAccountsData from '../hooks/useAccountsData';
+
+type TransactionDetails = {
+  chainId: string;
+  fromAddress: string;
+  toAddress: string;
+  amount: string;
+  account: Account
+  balance: string;
+  requestedNetwork: NetworksDataState
+};
+
+export const WalletEmbed = () => {
+  const [isTxRequested, setIsTxRequested] = useState<boolean>(false);
+  const [transactionDetails, setTransactionDetails] = useState<TransactionDetails | null>(null);
+  const [fees, setFees] = useState<string>('');
+  const [gasLimit, setGasLimit] = useState<string>('');
+  const [isTxLoading, setIsTxLoading] = useState(false);
+  const [txError, setTxError] = useState<string | null>(null);
+  const txEventRef = useRef<MessageEvent | null>(null);
+
+  const { networksData } = useNetworks();
+  const { getAccountsData } = useAccountsData();
+
+  useEffect(() => {
+    const handleGetAccounts = async (event: MessageEvent) => {
+      if (event.data.type !== 'REQUEST_WALLET_ACCOUNTS') return;
+
+      const accountsData = await getAccountsData(event.data.chainId);
+
+      if (accountsData.length === 0) {
+        sendMessage(event.source as Window, 'ERROR', 'Wallet accounts not found', event.origin);
+        return;
+      }
+
+      sendMessage(
+        event.source as Window,
+        'WALLET_ACCOUNTS_DATA',
+        accountsData.map(account => account.address),
+        event.origin
+      );
+    };
+
+    window.addEventListener('message', handleGetAccounts);
+
+    return () => {
+      window.removeEventListener('message', handleGetAccounts);
+    };
+  }, [getAccountsData]);
+
+  // Custom hook for adding listener to get accounts data
+  useGetOrCreateAccounts();
+
+  const handleTxRequested = useCallback(
+    async (event: MessageEvent) => {
+      try {
+        if (event.data.type !== 'REQUEST_TX') return;
+
+        txEventRef.current = event;
+
+        const { chainId, fromAddress, toAddress, amount } = event.data;
+        const network = networksData.find(net => net.chainId === chainId);
+
+        if (!network) {
+          console.error('Network not found');
+          throw new Error('Requested network not supported.');
+        }
+
+        const account = await retrieveSingleAccount(network.namespace, network.chainId, fromAddress);
+        if (!account) {
+          throw new Error('Account not found for the requested address.');
+        }
+
+        const cosmosPrivKey = (
+          await getPathKey(`${network.namespace}:${chainId}`, account.index)
+        ).privKey;
+
+        const sender = await DirectSecp256k1Wallet.fromKey(
+          Buffer.from(cosmosPrivKey.split('0x')[1], 'hex'),
+          network.addressPrefix
+        );
+
+        const client = await SigningStargateClient.connectWithSigner(network.rpcUrl!, sender);
+
+        const balance = await client.getBalance(
+          account.address,
+          network.nativeDenom!.toLowerCase()
+        );
+
+        const sendMsg = {
+          typeUrl: '/cosmos.bank.v1beta1.MsgSend',
+          value: {
+            fromAddress: fromAddress,
+            toAddress: toAddress,
+            amount: [
+              {
+                amount: String(amount),
+                denom: network.nativeDenom!,
+              },
+            ],
+          },
+        };
+
+        setTransactionDetails({
+          chainId,
+          fromAddress,
+          toAddress,
+          amount,
+          account,
+          balance: balance.amount,
+          requestedNetwork: network,
+        });
+
+        if (!checkSufficientFunds(amount, balance.amount)) {
+          console.log("Insufficient funds detected. Throwing error.");
+          throw new Error('Insufficient funds');
+        }
+
+        const gasEstimation = await client.simulate(fromAddress, [sendMsg], MEMO);
+        const gasLimit = String(
+          Math.round(gasEstimation * Number(process.env.REACT_APP_GAS_ADJUSTMENT))
+        );
+        setGasLimit(gasLimit);
+
+        const gasPrice = GasPrice.fromString(`${network.gasPrice}${network.nativeDenom}`);
+        const cosmosFees = calculateFee(Number(gasLimit), gasPrice);
+        setFees(cosmosFees.amount[0].amount);
+
+        setIsTxRequested(true);
+      } catch (error) {
+        if (!(error instanceof Error)) {
+          throw error;
+        }
+        setTxError(error.message);
+      }
+    }, [networksData]);
+
+  useEffect(() => {
+    window.addEventListener('message', handleTxRequested);
+    return () => window.removeEventListener('message', handleTxRequested);
+  }, [handleTxRequested]);
+
+  const acceptRequestHandler = async () => {
+    try {
+      setIsTxLoading(true);
+      if (!transactionDetails) {
+        throw new Error('Tx details not set');
+      }
+      const balanceBigNum = BigNumber.from(transactionDetails.balance);
+      const amountBigNum = BigNumber.from(String(transactionDetails.amount));
+      if (amountBigNum.gte(balanceBigNum)) {
+        throw new Error('Insufficient funds');
+      }
+
+      const cosmosPrivKey = (
+        await getPathKey(`${transactionDetails.requestedNetwork.namespace}:${transactionDetails.chainId}`, transactionDetails.account.index)
+      ).privKey;
+
+      const sender = await DirectSecp256k1Wallet.fromKey(
+        Buffer.from(cosmosPrivKey.split('0x')[1], 'hex'),
+        transactionDetails.requestedNetwork.addressPrefix
+      );
+
+      const client = await SigningStargateClient.connectWithSigner(
+        transactionDetails.requestedNetwork.rpcUrl!,
+        sender
+      );
+
+      const fee = calculateFee(
+        Number(gasLimit),
+        GasPrice.fromString(`${transactionDetails.requestedNetwork.gasPrice}${transactionDetails.requestedNetwork.nativeDenom}`)
+      );
+
+      const txResult = await client.sendTokens(
+        transactionDetails.fromAddress,
+        transactionDetails.toAddress,
+        [{ amount: String(transactionDetails.amount), denom: transactionDetails.requestedNetwork.nativeDenom! }],
+        fee
+      );
+
+      const event = txEventRef.current;
+      if (event?.source) {
+        sendMessage(event.source as Window, 'TRANSACTION_RESPONSE', txResult.transactionHash, event.origin);
+      } else {
+        console.error('No event source available to send message');
+      }
+    } catch (error) {
+      if (!(error instanceof Error)) {
+        throw error;
+      }
+      setTxError(error.message);
+    } finally {
+      setIsTxLoading(false);
+    }
+  };
+
+  const rejectRequestHandler = () => {
+    const event = txEventRef.current;
+
+    setIsTxRequested(false);
+    setTransactionDetails(null);
+    if (event?.source) {
+      sendMessage(event.source as Window, 'TRANSACTION_RESPONSE', null, event.origin);
+    } else {
+      console.error('No event source available to send message');
+    }
+  };
+
+  return (
+    <>
+      {isTxRequested && transactionDetails ? (
+        <>
+          <ScrollView contentContainerStyle={styles.appContainer}>
+            <View style={styles.dataBoxContainer}>
+              <Text style={styles.dataBoxLabel}>From</Text>
+              <View style={styles.dataBox}>
+                <AccountDetails account={transactionDetails.account} />
+              </View>
+            </View>
+            <DataBox
+              label={`Balance (${transactionDetails.requestedNetwork.nativeDenom})`}
+              data={
+                transactionDetails.balance === '' ||
+                  transactionDetails.balance === undefined
+                  ? 'Loading balance...'
+                  : `${transactionDetails.balance}`
+              }
+            />
+            <View style={styles.approveTransfer}>
+              <DataBox label="To" data={transactionDetails.toAddress} />
+              <DataBox
+                label={`Amount (${transactionDetails.requestedNetwork.nativeDenom})`}
+                data={transactionDetails.amount}
+              />
+              <TextInput
+                mode="outlined"
+                label="Fee"
+                value={fees}
+                onChangeText={setFees}
+                style={styles.transactionFeesInput}
+              />
+              <TextInput
+                mode="outlined"
+                label="Gas Limit"
+                value={gasLimit}
+                onChangeText={value =>
+                  /^\d+$/.test(value) ? setGasLimit(value) : null
+                }
+              />
+            </View>
+          </ScrollView>
+          <View style={styles.buttonContainer}>
+            <Button
+              mode="contained"
+              onPress={acceptRequestHandler}
+              loading={isTxLoading}
+              disabled={!transactionDetails.balance || !fees || isTxLoading}
+            >
+              {isTxLoading ? 'Processing' : 'Yes'}
+            </Button>
+            <Button
+              mode="contained"
+              onPress={rejectRequestHandler}
+              buttonColor="#B82B0D"
+              disabled={isTxLoading}
+            >
+              No
+            </Button>
+          </View>
+        </>
+      ) : (
+        <View style={styles.spinnerContainer}>
+          <View style={{ marginTop: 50 }}></View>
+          <ActivityIndicator size="large" color="#0000ff" />
+        </View>
+      )}
+      <TxErrorDialog
+        error={txError!}
+        visible={!!txError}
+        hideDialog={() => {
+          setTxError(null)
+          if (window.parent) {
+            sendMessage(window.parent, 'TRANSACTION_RESPONSE', null, '*');
+            sendMessage(window.parent, 'closeIframe', null, '*');
+          }
+        }}
+      />
+    </>
+  );
+};

src/styles/stylesheet.js

@@ -288,7 +288,7 @@ const styles = StyleSheet.create({
     fontSize: 18,
     fontWeight: "bold",
     marginBottom: 3,
-    color: "black",
+    color: "white",
   },
   dataBox: {
     borderWidth: 1,

src/types.ts

@@ -13,8 +13,10 @@ export type StackParamsList = {
   };
   SignRequest: {
     namespace: string;
+    chainId?: string;
     address: string;
     message: string;
+    accountInfo?: Account;
     requestEvent?: Web3WalletTypes.SessionRequest;
     requestSessionData?: SessionTypes.Struct;
   };
@@ -36,6 +38,8 @@ export type StackParamsList = {
     requestEvent: Web3WalletTypes.SessionRequest;
     requestSessionData: SessionTypes.Struct;
   };
+  "wallet-embed": undefined;
+  "auto-sign-in": undefined;
 };
 
 export type Account = {

src/utils/constants.ts

@@ -1,21 +1,35 @@
 import { COSMOS_TESTNET_CHAINS } from './wallet-connect/COSMOSData';
 import { EIP155_CHAINS } from './wallet-connect/EIP155Data';
+import { NetworksFormData } from '../types';
 
 export const EIP155 = 'eip155';
 export const COSMOS = 'cosmos';
-export const DEFAULT_NETWORKS = [
+
+export const DEFAULT_NETWORKS: NetworksFormData[] = [
   {
-    chainId: 'laconic_9000-1',
-    networkName: 'laconicd',
+    chainId: 'laconic-testnet-2',
+    networkName: 'laconicd testnet-2',
     namespace: COSMOS,
     rpcUrl: process.env.REACT_APP_LACONICD_RPC_URL!,
     blockExplorerUrl: '',
     nativeDenom: 'alnt',
     addressPrefix: 'laconic',
     coinType: '118',
-    gasPrice: '1',
+    gasPrice: '0.001',
     isDefault: true,
   },
+  {
+    chainId: 'laconic_9000-1',
+    networkName: 'laconicd',
+    namespace: COSMOS,
+    rpcUrl: "https://laconicd.laconic.com",
+    blockExplorerUrl: '',
+    nativeDenom: 'alnt',
+    addressPrefix: 'laconic',
+    coinType: '118',
+    gasPrice: '1',
+    isDefault: false,
+  },
   {
     chainId: '1',
     networkName: EIP155_CHAINS['eip155:1'].name,
@@ -27,10 +41,10 @@ export const DEFAULT_NETWORKS = [
     isDefault: true,
   },
   {
-    chainId: 'theta-testnet-001',
-    networkName: COSMOS_TESTNET_CHAINS['cosmos:theta-testnet-001'].name,
+    chainId: 'provider',
+    networkName: COSMOS_TESTNET_CHAINS['cosmos:provider'].name,
     namespace: COSMOS,
-    rpcUrl: COSMOS_TESTNET_CHAINS['cosmos:theta-testnet-001'].rpc,
+    rpcUrl: COSMOS_TESTNET_CHAINS['cosmos:provider'].rpc,
     blockExplorerUrl: '',
     nativeDenom: 'uatom',
     addressPrefix: 'cosmos',

src/utils/misc.ts

@@ -1,7 +1,11 @@
 /*  Importing this library provides react native with a secure random source.
 For more information, "visit https://docs.ethers.org/v5/cookbook/react-native/#cookbook-reactnative-security" */
 import 'react-native-get-random-values';
+import { BigNumber } from 'ethers';
 
+import { AccountData } from '@cosmjs/amino';
+import { DirectSecp256k1HdWallet } from '@cosmjs/proto-signing';
+import { stringToPath } from '@cosmjs/crypto';
 import '@ethersproject/shims';
 
 import {
@@ -9,10 +13,6 @@ import {
   resetInternetCredentials,
   setInternetCredentials,
 } from './key-store';
-
-import { AccountData } from '@cosmjs/amino';
-import { DirectSecp256k1HdWallet } from '@cosmjs/proto-signing';
-import { stringToPath } from '@cosmjs/crypto';
 import { EIP155 } from './constants';
 import { NetworksDataState } from '../types';
 
@@ -149,10 +149,28 @@ const resetKeyServers = async (namespace: string) => {
   });
 };
 
+const sendMessage = (
+  source: Window | null,
+  type: string,
+  data: any,
+  origin: string
+): void => {
+  source?.postMessage({ type, data }, origin);
+};
+
+const checkSufficientFunds = (amount: string, balance: string) => {
+  const amountBigNum = BigNumber.from(String(amount));
+  const balanceBigNum = BigNumber.from(balance);
+
+  return balanceBigNum.gte(amountBigNum);
+};
+
 export {
   getMnemonic,
   getPathKey,
   updateAccountIndices,
   getHDPath,
   resetKeyServers,
+  sendMessage,
+  checkSufficientFunds,
 };

src/utils/sign-message.ts

@@ -3,6 +3,7 @@ For more information, "visit https://docs.ethers.org/v5/cookbook/react-native/#c
 import 'react-native-get-random-values';
 
 import '@ethersproject/shims';
+import { fromBech32 } from '@cosmjs/encoding';
 
 import { Wallet } from 'ethers';
 import { SignDoc } from 'cosmjs-types/cosmos/tx/v1beta1/tx';
@@ -24,7 +25,7 @@ const signMessage = async ({
     case EIP155:
       return await signEthMessage(message, accountId, chainId);
     case COSMOS:
-      return await signCosmosMessage(message, path.path);
+      return await signCosmosMessage(message, path.path, path.address);
     default:
       throw new Error('Invalid wallet type');
   }
@@ -51,10 +52,13 @@ const signEthMessage = async (
 const signCosmosMessage = async (
   message: string,
   path: string,
+  cosmosAddress: string,
 ): Promise<string | undefined> => {
   try {
     const mnemonic = await getMnemonic();
-    const cosmosAccount = await getCosmosAccounts(mnemonic, path);
+    const addressPrefix = fromBech32(cosmosAddress).prefix
+
+    const cosmosAccount = await getCosmosAccounts(mnemonic, path, addressPrefix);
     const address = cosmosAccount.data.address;
     const cosmosSignature = await cosmosAccount.cosmosWallet.signAmino(
       address,

src/utils/wallet-connect/COSMOSData.ts

@@ -19,10 +19,10 @@ export const COSMOS_TESTNET_CHAINS: Record<
     namespace: string;
   }
 > = {
-  'cosmos:theta-testnet-001': {
-    chainId: 'theta-testnet-001',
+  'cosmos:provider': {
+    chainId: 'provider',
     name: 'Cosmos Hub Testnet',
-    rpc: 'https://rpc-t.cosmos.nodestake.top',
+    rpc: 'https://rpc-rs.cosmos.nodestake.top',
     namespace: 'cosmos',
   },
 };

src/utils/wallet-connect/wallet-connect-requests.ts

@@ -9,6 +9,7 @@ import {
   StdFee,
   MsgSendEncodeObject
 } from '@cosmjs/stargate';
+import { fromBech32 } from '@cosmjs/encoding';
 import { EncodeObject } from '@cosmjs/proto-signing';
 import { LaconicClient } from '@cerc-io/registry-sdk';
 import { Buffer } from 'buffer';
@@ -19,6 +20,7 @@ import { Account } from '../../types';
 import { getMnemonic, getPathKey } from '../misc';
 import { getCosmosAccounts } from '../accounts';
 import { COSMOS_METHODS } from './COSMOSData';
+import { COSMOS } from '../constants';
 
 interface EthSendTransaction {
   type: 'eth_sendTransaction';
@@ -80,7 +82,13 @@ export async function approveWalletConnectRequest(
   const path = (await getPathKey(`${namespace}:${chainId}`, account.index))
     .path;
   const mnemonic = await getMnemonic();
-  const cosmosAccount = await getCosmosAccounts(mnemonic, path);
+
+  let addressPrefix: string | undefined
+  if (namespace === COSMOS) {
+    addressPrefix = fromBech32(account.address).prefix
+  }
+
+  const cosmosAccount = await getCosmosAccounts(mnemonic, path, addressPrefix);
   const address = account.address;
 
   switch (request.method) {

stack/stack-orchestrator/compose/docker-compose-laconic-wallet-web.yml

@@ -6,9 +6,11 @@ services:
     environment:
       CERC_SCRIPT_DEBUG: ${CERC_SCRIPT_DEBUG}
       WALLET_CONNECT_ID: ${WALLET_CONNECT_ID}
+      WALLET_CONNECT_VERIFY_CODE: ${WALLET_CONNECT_VERIFY_CODE}
       CERC_DEFAULT_GAS_PRICE: ${CERC_DEFAULT_GAS_PRICE:-0.025}
       CERC_GAS_ADJUSTMENT: ${CERC_GAS_ADJUSTMENT:-2}
       CERC_LACONICD_RPC_URL: ${CERC_LACONICD_RPC_URL:-https://laconicd.laconic.com}
+      CERC_DEPLOY_APP_URL: ${CERC_DEPLOY_APP_URL}
     command: ["bash", "/scripts/run.sh"]
     volumes:
       - ../config/app/run.sh:/scripts/run.sh

stack/stack-orchestrator/config/app/run.sh

@@ -10,12 +10,23 @@ echo "WALLET_CONNECT_ID: ${WALLET_CONNECT_ID}"
 echo "CERC_DEFAULT_GAS_PRICE: ${CERC_DEFAULT_GAS_PRICE}"
 echo "CERC_GAS_ADJUSTMENT: ${CERC_GAS_ADJUSTMENT}"
 echo "CERC_LACONICD_RPC_URL: ${CERC_LACONICD_RPC_URL}"
+echo "CERC_DEPLOY_APP_URL: ${CERC_DEPLOY_APP_URL}"
 
 # Build with required env
 REACT_APP_WALLET_CONNECT_PROJECT_ID=$WALLET_CONNECT_ID \
 REACT_APP_DEFAULT_GAS_PRICE=$CERC_DEFAULT_GAS_PRICE \
 REACT_APP_GAS_ADJUSTMENT=$CERC_GAS_ADJUSTMENT \
 REACT_APP_LACONICD_RPC_URL=$CERC_LACONICD_RPC_URL \
+REACT_APP_DEPLOY_APP_URL=$CERC_DEPLOY_APP_URL \
 yarn build
 
+# Define the directory and file path
+FILE_PATH="/app/build/.well-known/walletconnect.txt"
+
+# Create the directory if it doesn't exist
+mkdir -p "$(dirname "$FILE_PATH")"
+# Write verification code to the file
+echo "$WALLET_CONNECT_VERIFY_CODE" > "$FILE_PATH"
+
+# Serve build dir
 http-server --proxy http://localhost:80? -p 80 /app/build

stack/stack-orchestrator/stack/laconic-wallet-web/README.md

@@ -51,6 +51,9 @@ Instructions for running the `laconic-wallet-web` using [laconic-so](https://git
 
   # Optional
 
+  # WalletConnect code for hostname verification
+  WALLET_CONNECT_VERIFY_CODE=
+
   # Default gas price for txs (default: 0.025)
   CERC_DEFAULT_GAS_PRICE=
 
@@ -60,6 +63,10 @@ Instructions for running the `laconic-wallet-web` using [laconic-so](https://git
 
   # RPC endpoint of laconicd node (default: https://laconicd.laconic.com)
   CERC_LACONICD_RPC_URL=
+
+  # Deploy app URL used for checking origin of the messages for auto-sign-in route
+  # Deploy app repo: https://git.vdb.to/cerc-io/snowballtools-base
+  CERC_DEPLOY_APP_URL=
   ```
 
 ## Start the deployment