feat: wallet balance

closes #42

lib/i18n/strings.g.dart

@@ -4,9 +4,9 @@
 /// To regenerate, run: `dart run slang`
 ///
 /// Locales: 22
-/// Strings: 1650 (75 per locale)
+/// Strings: 1653 (75 per locale)
 ///
-/// Built on 2025-05-29 at 10:02 UTC
+/// Built on 2025-05-29 at 11:29 UTC
 
 // coverage:ignore-file
 // ignore_for_file: type=lint, unused_import

lib/i18n/strings_en.g.dart

@@ -52,6 +52,8 @@ class Translations implements BaseTranslations<AppLocale, Translations> {
 	/// An anonymous user
 	String get anon => 'Anon';
 
+	String full_amount_sats({required num n}) => '${NumberFormat.decimalPattern('en').format(n)} sats';
+
 	/// Number of viewers of the stream
 	String viewers({required num n}) => (_root.$meta.cardinalResolver ?? PluralResolvers.cardinal('en'))(n,
 		one: '1 viewer',
@@ -290,6 +292,8 @@ class TranslationsSettingsWalletEn {
 	String get disconnect_wallet => 'Disconnect Wallet';
 	String get connect_1tap => '1-Tap Connection';
 	String get paste => 'Paste URL';
+	String get balance => 'Balance';
+	String get name => 'Wallet';
 	late final TranslationsSettingsWalletErrorEn error = TranslationsSettingsWalletErrorEn.internal(_root);
 }
 
@@ -381,6 +385,7 @@ extension on Translations {
 			case 'most_zapped_streamers': return 'Most Zapped Streamers';
 			case 'no_user_found': return 'No user found';
 			case 'anon': return 'Anon';
+			case 'full_amount_sats': return ({required num n}) => '${NumberFormat.decimalPattern('en').format(n)} sats';
 			case 'viewers': return ({required num n}) => (_root.$meta.cardinalResolver ?? PluralResolvers.cardinal('en'))(n,
 				one: '1 viewer',
 				other: '${NumberFormat.decimalPattern('en').format(n)} viewers',
@@ -458,6 +463,8 @@ extension on Translations {
 			case 'settings.wallet.disconnect_wallet': return 'Disconnect Wallet';
 			case 'settings.wallet.connect_1tap': return '1-Tap Connection';
 			case 'settings.wallet.paste': return 'Paste URL';
+			case 'settings.wallet.balance': return 'Balance';
+			case 'settings.wallet.name': return 'Wallet';
 			case 'settings.wallet.error.logged_out': return 'Cant connect wallet when logged out';
 			case 'settings.wallet.error.nwc_auth_event_not_found': return 'No wallet auth event found';
 			case 'login.username': return 'Username';

lib/i18n/translated/en.i18n.yaml

@@ -8,6 +8,7 @@ no_user_found: No user found
 "@no_user_found":
   description: No user found when searching
 anon: Anon
+full_amount_sats: ${n:decimalPattern} sats
 viewers:
   one: 1 viewer
   other: ${n:decimalPattern} viewers
@@ -122,6 +123,8 @@ settings:
     disconnect_wallet: Disconnect Wallet
     connect_1tap: 1-Tap Connection
     paste: Paste URL
+    balance: Balance
+    name: Wallet
     error:
       logged_out: Cant connect wallet when logged out
       nwc_auth_event_not_found: No wallet auth event found

lib/login.dart

@@ -38,8 +38,16 @@ class WalletConfig {
   }
 }
 
+class WalletInfo {
+  final String name;
+  final int balance;
+
+  const WalletInfo({required this.name, required this.balance});
+}
+
 abstract class SimpleWallet {
   Future<String> payInvoice(String pr);
+  Future<WalletInfo> getInfo();
 }
 
 class NWCWrapper extends SimpleWallet {
@@ -60,6 +68,13 @@ class NWCWrapper extends SimpleWallet {
       return rsp.preimage!;
     }
   }
+
+  @override
+  Future<WalletInfo> getInfo() async {
+    final info = await ndk.nwc.getInfo(_conn);
+    final balance = await ndk.nwc.getBalance(_conn);
+    return WalletInfo(name: info.alias, balance: balance.balanceSats);
+  }
 }
 
 class LoginAccount {

lib/pages/settings_wallet.dart

@@ -87,7 +87,7 @@ class _Inner extends State<SettingsWalletPage> with ProtocolListener {
       queryParameters: {
         "relay": nwcRelays,
         "name": "zap.stream",
-        "request_methods": "pay_invoice",
+        "request_methods": "pay_invoice get_info get_balance",
         "icon": "https://zap.stream/logo.png",
         "return_to": nwaHandlerUrl,
       },
@@ -174,7 +174,33 @@ class _Inner extends State<SettingsWalletPage> with ProtocolListener {
             ],
           );
         } else {
-          return BasicButton.text(
+          return FutureBuilder(
+            future: () async {
+              final wallet = await state!.getWallet();
+              return await wallet?.getInfo();
+            }(),
+            builder: (context, state) {
+              return Column(
+                spacing: 8,
+                crossAxisAlignment: CrossAxisAlignment.start,
+                children: [
+                  Text(
+                    "Wallet: ${state.data?.name ?? ""}",
+                    style: TextStyle(fontWeight: FontWeight.bold, fontSize: 24),
+                  ),
+                  Text.rich(
+                    TextSpan(
+                      style: TextStyle(fontWeight: FontWeight.w500),
+                      children: [
+                        TextSpan(text: t.settings.wallet.balance),
+                        TextSpan(text: ": "),
+                        TextSpan(
+                          text: t.full_amount_sats(n: state.data?.balance ?? 0),
+                        ),
+                      ],
+                    ),
+                  ),
+                  BasicButton.text(
                     t.settings.wallet.disconnect_wallet,
                     onTap: (context) {
                       _setWallet(null);
@@ -182,6 +208,10 @@ class _Inner extends State<SettingsWalletPage> with ProtocolListener {
                         context.pop();
                       }
                     },
+                  ),
+                ],
+              );
+            },
           );
         }
       },