feat: Added mainnet to solana_client example (#1532)

packages/solana_mobile_client/example/lib/client.dart

@@ -6,14 +6,32 @@ import 'package:freezed_annotation/freezed_annotation.dart';
 import 'package:solana/encoder.dart';
 import 'package:solana/solana.dart';
 import 'package:solana_mobile_client/solana_mobile_client.dart';
+import 'package:solana_mobile_client_example/config.dart';
 
 part 'client.freezed.dart';
 
 // ignore: avoid-cubits, just an example
 class ClientBloc extends Cubit<ClientState> {
-  ClientBloc(this._solanaClient) : super(const ClientState());
+  ClientBloc() : super(const ClientState()) {
+    _initializeClient();
+  }
+
+  late SolanaClient _solanaClient;
+
+  void _initializeClient() {
+    final rpcUrl = state.isMainnet ? mainnetRpcUrl : testnetRpcUrl;
+    final websocketUrl = state.isMainnet ? mainnetWsUrl : testnetWsUrl;
+    _solanaClient = SolanaClient(
+      rpcUrl: Uri.parse(rpcUrl),
+      websocketUrl: Uri.parse(websocketUrl),
+    );
+  }
 
-  final SolanaClient _solanaClient;
+  void updateNetwork({required bool isMainnet}) {
+    if (state.isMainnet == isMainnet) return;
+    _initializeClient();
+    emit(ClientState(isMainnet: isMainnet));
+  }
 
   Future<bool> isWalletAvailable() => LocalAssociationScenario.isAvailable();
 
@@ -180,7 +198,7 @@ class ClientBloc extends Cubit<ClientState> {
       identityUri: Uri.parse('https://solana.com'),
       iconUri: Uri.parse('favicon.ico'),
       identityName: 'Solana',
-      cluster: 'testnet',
+      cluster: state.isMainnet ? mainnetCluster : testnetCluster,
     );
 
     emit(state.copyWith(authorizationResult: result));
@@ -211,6 +229,7 @@ class ClientState with _$ClientState {
     GetCapabilitiesResult? capabilities,
     AuthorizationResult? authorizationResult,
     @Default(false) bool isRequestingAirdrop,
+    @Default(false) bool isMainnet,
   }) = _ClientState;
 
   const ClientState._();

packages/solana_mobile_client/example/lib/config.dart

@@ -0,0 +1,6 @@
+const String testnetRpcUrl = 'https://api.testnet.solana.com';
+const String testnetWsUrl = 'wss://api.testnet.solana.com';
+const String testnetCluster = 'testnet';
+const String mainnetRpcUrl = 'https://api.mainnet-beta.solana.com';
+const String mainnetWsUrl = 'wss://api.mainnet-beta.solana.com';
+const String mainnetCluster = 'mainnet-beta';

packages/solana_mobile_client/example/lib/main.dart

@@ -1,17 +1,11 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
-import 'package:solana/solana.dart';
 import 'package:solana_mobile_client_example/client.dart';
 
 void main() {
   runApp(
     BlocProvider(
-      create: (_) => ClientBloc(
-        SolanaClient(
-          rpcUrl: Uri.parse('https://api.testnet.solana.com'),
-          websocketUrl: Uri.parse('wss://api.testnet.solana.com'),
-        ),
-      ),
+      create: (_) => ClientBloc(),
       child: const MyApp(),
     ),
   );
@@ -37,6 +31,7 @@ class MyApp extends StatelessWidget {
               builder: (context, state) => Column(
                 crossAxisAlignment: CrossAxisAlignment.start,
                 children: [
+                  const NetworkToggleButtons(),
                   Padding(
                     padding: const EdgeInsets.symmetric(
                       horizontal: 8,
@@ -144,6 +139,34 @@ class MyApp extends StatelessWidget {
       );
 }
 
+class NetworkToggleButtons extends StatelessWidget {
+  const NetworkToggleButtons({super.key});
+
+  @override
+  Widget build(BuildContext context) => Padding(
+        padding: const EdgeInsets.symmetric(horizontal: 8),
+        child: ToggleButtons(
+          isSelected: [
+            !context.watch<ClientBloc>().state.isMainnet,
+            context.watch<ClientBloc>().state.isMainnet,
+          ],
+          onPressed: (index) {
+            context.read<ClientBloc>().updateNetwork(isMainnet: index == 1);
+          },
+          children: const [
+            Padding(
+              padding: EdgeInsets.symmetric(horizontal: 16),
+              child: Text('Testnet'),
+            ),
+            Padding(
+              padding: EdgeInsets.symmetric(horizontal: 16),
+              child: Text('Mainnet'),
+            ),
+          ],
+        ),
+      );
+}
+
 class SignAndSendTxButton extends StatelessWidget {
   const SignAndSendTxButton({
     super.key,