Switch RPC and Subsquid endpoints to mainnet

miner-app/lib/features/miner/miner_balance_card.dart

@@ -3,6 +3,7 @@ import 'dart:async';
 import 'package:flutter/material.dart';
 import 'package:quantus_miner/src/config/miner_config.dart';
 import 'package:quantus_miner/src/services/log_stream_processor.dart';
+import 'package:quantus_miner/src/services/miner_settings_service.dart';
 import 'package:quantus_miner/src/services/miner_wallet_service.dart';
 import 'package:quantus_miner/src/services/mining_orchestrator.dart';
 import 'package:quantus_miner/src/shared/extensions/snackbar_extensions.dart';
@@ -24,7 +25,7 @@ class MinerBalanceCard extends StatefulWidget {
 
 class _MinerBalanceCardState extends State<MinerBalanceCard> {
   final _walletService = MinerWalletService();
-  final _utxoService = WormholeUtxoService();
+  final _settingsService = MinerSettingsService();
   String? _address;
   BigInt? _balance;
   bool _loading = true;
@@ -112,7 +113,8 @@ class _MinerBalanceCardState extends State<MinerBalanceCard> {
     setState(() => _balanceLoading = true);
     _log.i('Fetching unspent balance for $address ...');
     try {
-      final balance = await _utxoService.getUnspentBalance(wormholeAddress: address, secretHex: secretHex);
+      final utxoService = await _settingsService.utxoService();
+      final balance = await utxoService.getUnspentBalance(wormholeAddress: address, secretHex: secretHex);
       _log.i('Unspent balance: $balance token units (${_formatter.formatBalance(balance, addSymbol: true)})');
       if (!mounted) return;
       setState(() {

miner-app/lib/features/withdrawal/claim_rewards_dialog.dart

@@ -26,7 +26,7 @@ enum _Screen { input, confirm, progress }
 
 class _ClaimRewardsDialogState extends State<_ClaimRewardsDialog> {
   final _addressController = TextEditingController();
-  final _wormholeSendService = WormholeSendService();
+  WormholeSendService? _wormholeSendService;
   final _walletService = MinerWalletService();
   final _settingsService = MinerSettingsService();
 
@@ -118,7 +118,9 @@ class _ClaimRewardsDialogState extends State<_ClaimRewardsDialog> {
       final rpcUrl = chainConfig.rpcUrl;
       _log.i('Starting claim for ${keyPair.address} to ${_addressController.text.trim()}');
 
-      final result = await _wormholeSendService.claimRewards(
+      final sendService = WormholeSendService(utxoService: await _settingsService.utxoService());
+      _wormholeSendService = sendService;
+      final result = await sendService.claimRewards(
         wormholeAddress: keyPair.address,
         secretHex: keyPair.secretHex,
         destinationAddress: _addressController.text.trim(),
@@ -163,7 +165,7 @@ class _ClaimRewardsDialogState extends State<_ClaimRewardsDialog> {
   }
 
   void _cancelClaim() {
-    _wormholeSendService.cancel();
+    _wormholeSendService?.cancel();
   }
 
   @override

miner-app/lib/features/withdrawal/withdrawal_screen.dart

@@ -1,8 +1,8 @@
 import 'package:flutter/material.dart';
 import 'package:go_router/go_router.dart';
+import 'package:quantus_miner/src/services/miner_settings_service.dart';
 import 'package:quantus_miner/src/services/miner_wallet_service.dart';
 import 'package:quantus_miner/src/shared/extensions/snackbar_extensions.dart';
-import 'package:quantus_sdk/quantus_sdk.dart';
 
 import 'claim_rewards_dialog.dart';
 
@@ -17,7 +17,7 @@ class WithdrawalScreen extends StatefulWidget {
 
 class _WithdrawalScreenState extends State<WithdrawalScreen> {
   final _walletService = MinerWalletService();
-  final _utxoService = WormholeUtxoService();
+  final _settingsService = MinerSettingsService();
   BigInt? _balance;
   bool _loading = true;
   bool _canWithdraw = false;
@@ -34,7 +34,8 @@ class _WithdrawalScreenState extends State<WithdrawalScreen> {
     BigInt? balance;
     if (keyPair != null && keyPair.secretHex.isNotEmpty) {
       try {
-        balance = await _utxoService.getUnspentBalance(wormholeAddress: keyPair.address, secretHex: keyPair.secretHex);
+        final utxoService = await _settingsService.utxoService();
+        balance = await utxoService.getUnspentBalance(wormholeAddress: keyPair.address, secretHex: keyPair.secretHex);
       } catch (_) {}
     }
     if (!mounted) return;

miner-app/lib/src/config/miner_config.dart

@@ -141,7 +141,15 @@ class MinerConfig {
       displayName: 'Planck Testnet',
       description: 'Planck testnet',
       rpcUrl: 'https://a1-planck.quantus.cat',
-      subsquidUrl: 'http://127.0.0.1:4000/graphql', // Local Subsquid for testing
+      subsquidUrl: 'https://sub2.quantus.com/v1/graphql',
+      isDefault: false,
+    ),
+    ChainConfig(
+      id: 'mainnet',
+      displayName: 'Mainnet',
+      description: 'Quantus mainnet',
+      rpcUrl: 'https://rpc1-mainnet.quantus.com',
+      subsquidUrl: 'https://subsquid-mainnet-app-1.quantus.com/v1/graphql',
       isDefault: true,
     ),
   ];
@@ -207,15 +215,15 @@ class ChainConfig {
   final String displayName;
   final String description;
   final String rpcUrl;
-  final String? subsquidUrl;
+  final String subsquidUrl;
   final bool isDefault;
 
   const ChainConfig({
     required this.id,
     required this.displayName,
     required this.description,
     required this.rpcUrl,
-    this.subsquidUrl,
+    required this.subsquidUrl,
     this.isDefault = false,
   });
 

miner-app/lib/src/services/miner_settings_service.dart

@@ -42,34 +42,9 @@ class MinerSettingsService {
     return prefs.getInt(_keyGpuDevices);
   }
 
-  /// Save the selected chain ID and configure endpoints accordingly.
   Future<void> saveChainId(String chainId) async {
     final prefs = await SharedPreferences.getInstance();
     await prefs.setString(_keyChainId, chainId);
-    // Update GraphQL endpoint for the selected chain
-    _configureEndpointsForChain(chainId);
-  }
-
-  /// Configure RPC and GraphQL endpoints based on chain ID.
-  void _configureEndpointsForChain(String chainId) {
-    final chain = MinerConfig.getChainById(chainId);
-    _log.i('Configuring endpoints for chain $chainId:');
-    _log.i('  RPC: ${chain.rpcUrl}');
-    _log.i('  GraphQL: ${chain.subsquidUrl ?? 'not configured'}');
-
-    // Configure RPC endpoint for SubstrateService
-    final rpcService = RpcEndpointService();
-    _log.i('  RPC endpoints before: ${rpcService.endpoints.length}');
-    // rpcService.setEndpoints([chain.rpcUrl]);
-    // _log.i('  RPC endpoints after: ${rpcService.endpoints.length}');
-    // _log.i('  Best RPC endpoint: ${rpcService.bestEndpointUrl}');
-
-    // Configure GraphQL endpoint (for any remaining Subsquid usage)
-    // if (chain.subsquidUrl != null) {
-    //   GraphQlEndpointService().setEndpoints([chain.subsquidUrl!]);
-    // } else {
-    //   GraphQlEndpointService().setEndpoints([]);
-    // }
   }
 
   /// Get the saved chain ID, returns default if not set.
@@ -89,8 +64,6 @@ class MinerSettingsService {
         chainId = savedChainId;
       }
     }
-    // Configure endpoints for this chain
-    _configureEndpointsForChain(chainId);
     return chainId;
   }
 
@@ -100,6 +73,16 @@ class MinerSettingsService {
     return MinerConfig.getChainById(chainId);
   }
 
+  /// UTXO discovery bound to the selected chain, so balances, claims and proofs
+  /// all talk to the same network instead of the SDK's app-wide endpoints.
+  Future<WormholeUtxoService> utxoService() async {
+    final chain = await getChainConfig();
+    return WormholeUtxoService(
+      graphQl: GraphQlEndpointService.forUrls([chain.subsquidUrl]),
+      rpc: RpcEndpointService.forUrls([chain.rpcUrl]),
+    );
+  }
+
   Future<void> logout() async {
     _log.i('Starting app logout/reset...');