chore(app): Remind about minimum collateral when receiving on-chain funds

Author: holzeis

Diff for: mobile/lib/features/wallet/receive_screen.dart

@@ -8,6 +8,7 @@ import 'package:get_10101/common/custom_app_bar.dart';
 import 'package:get_10101/common/amount_text.dart';
 import 'package:get_10101/common/application/switch.dart';
 import 'package:get_10101/common/color.dart';
+import 'package:get_10101/common/dlc_channel_change_notifier.dart';
 import 'package:get_10101/common/domain/model.dart';
 import 'package:get_10101/common/scrollable_safe_area.dart';
 import 'package:get_10101/common/secondary_action_button.dart';
@@ -49,6 +50,7 @@ class _ReceiveScreenState extends State<ReceiveScreen> {
     super.initState();
     _createPaymentRequest(amount, description)
         .then((paymentRequest) => setState(() => _paymentRequest = paymentRequest));
+    context.read<DlcChannelChangeNotifier>().refreshDlcChannels();
   }
 
   String rawInvoice() {
@@ -63,6 +65,11 @@ class _ReceiveScreenState extends State<ReceiveScreen> {
   Widget build(BuildContext context) {
     final bridge.Config config = context.read<bridge.Config>();
 
+    final balance =
+        context.watch<WalletChangeNotifier>().walletInfo.balances.onChain ?? Amount.zero();
+    final hasDlcChannel = context.watch<DlcChannelChangeNotifier>().hasDlcChannel();
+    const minBalance = 275000;
+
     if (_paymentRequest == null) {
       return Scaffold(
           appBar: AppBar(title: const Text("Receive funds")),
@@ -202,6 +209,34 @@ class _ReceiveScreenState extends State<ReceiveScreen> {
         BitcoinAddress(
           address: _paymentRequest == null ? "" : _paymentRequest!.address,
         ),
+        const SizedBox(height: 20),
+        Visibility(
+          visible: !hasDlcChannel && balance.sats < minBalance,
+          child: Container(
+              padding: const EdgeInsets.symmetric(vertical: 10, horizontal: 20),
+              decoration: BoxDecoration(
+                  border: Border.all(color: tenTenOnePurple),
+                  color: Colors.white,
+                  borderRadius: BorderRadius.circular(10)),
+              child: Row(
+                mainAxisAlignment: MainAxisAlignment.start,
+                children: [
+                  const Icon(
+                    Icons.info,
+                    color: tenTenOnePurple,
+                    size: 22,
+                  ),
+                  const SizedBox(width: 10),
+                  Expanded(
+                    child: Text(
+                      "Receive around ${formatSats(Amount(minBalance))} to be able to trade.",
+                      softWrap: true,
+                      style: const TextStyle(fontSize: 16),
+                    ),
+                  )
+                ],
+              )),
+        ),
       ]),
     )));
   }
@@ -548,6 +583,7 @@ class _InvoiceDrawerScreen extends State<InvoiceDrawerScreen> {
                       color: Colors.grey.shade300,
                       borderRadius: BorderRadius.circular(4)),
                   child: InvoiceInputField(
+                    keyboardType: TextInputType.number,
                     onChanged: (value) => {
                       setState(() {
                         _amount = int.parse(value);
@@ -631,6 +667,7 @@ class InvoiceInputField extends StatelessWidget {
   final String hintText;
   final List<TextInputFormatter>? inputFormatters;
   final String value;
+  final TextInputType? keyboardType;
   final Widget? prefixIcon;
   final Widget? suffixIcon;
 
@@ -640,6 +677,7 @@ class InvoiceInputField extends StatelessWidget {
     required this.hintText,
     required this.inputFormatters,
     required this.value,
+    this.keyboardType,
     this.prefixIcon,
     this.suffixIcon,
   });
@@ -648,6 +686,7 @@ class InvoiceInputField extends StatelessWidget {
   Widget build(BuildContext context) {
     return TextFormField(
       initialValue: value,
+      keyboardType: keyboardType,
       decoration: InputDecoration(
           border: InputBorder.none,
           hintText: hintText,