+ quotation provider

frontend/pweb/lib/pages/payment_methods/add/crypto_address.dart

@@ -1,9 +1,14 @@
 import 'package:flutter/material.dart';
 
+import 'package:pshared/models/payment/asset.dart';
+import 'package:pshared/models/payment/chain_network.dart';
 import 'package:pshared/models/payment/methods/crypto_address.dart';
+import 'package:pshared/utils/l10n/chain.dart';
 
 import 'package:pweb/utils/text_field_styles.dart';
 
+import 'package:pweb/generated/i18n/app_localizations.dart';
+
 
 class CryptoAddressForm extends StatefulWidget {
   final void Function(CryptoAddressPaymentMethod) onChanged;
@@ -22,28 +27,67 @@ class CryptoAddressForm extends StatefulWidget {
 }
 
 class _CryptoAddressFormState extends State<CryptoAddressForm> {
+  final _formKey = GlobalKey<FormState>();
+
   late TextEditingController _addressCtrl;
-  late TextEditingController _networkCtrl;
-  late TextEditingController _destinationTagCtrl;
+  late TextEditingController _tokenCtrl;
+  late TextEditingController _contractCtrl;
+  late TextEditingController _memoCtrl;
+  late ChainNetwork _chain;
 
   @override
   void initState() {
     super.initState();
-    _addressCtrl = TextEditingController(text: widget.initialData?.address);
-    _networkCtrl = TextEditingController(text: widget.initialData?.network);
-    _destinationTagCtrl = TextEditingController(text: widget.initialData?.destinationTag);
+    final initial = widget.initialData;
+    _chain = initial?.asset?.chain ?? ChainNetwork.unspecified;
+    _addressCtrl = TextEditingController(text: initial?.address ?? '');
+    _tokenCtrl = TextEditingController(text: initial?.asset?.tokenSymbol ?? '');
+    _contractCtrl = TextEditingController(text: initial?.asset?.contractAddress ?? '');
+    _memoCtrl = TextEditingController(text: initial?.memo ?? '');
+
+    WidgetsBinding.instance.addPostFrameCallback((_) => _emitIfValid());
   }
 
-  void _emit() {
-    if (_addressCtrl.text.isNotEmpty && _networkCtrl.text.isNotEmpty) {
-      widget.onChanged(
-        CryptoAddressPaymentMethod(
-          address: _addressCtrl.text,
-          network: _networkCtrl.text,
-          destinationTag: _destinationTagCtrl.text.isNotEmpty ? _destinationTagCtrl.text : null,
-        ),
-      );
+  bool get _hasChainSelection => _chain != ChainNetwork.unspecified;
+
+  String? _validateAddress(AppLocalizations l10n, String? value) {
+    if (value == null || value.trim().isEmpty) return l10n.enterCryptoAddress;
+    return null;
+  }
+
+  String? _validateToken(AppLocalizations l10n) {
+    final token = _tokenCtrl.text.trim();
+    final contract = _contractCtrl.text.trim();
+    if ((_hasChainSelection || contract.isNotEmpty) && token.isEmpty) {
+      return l10n.tokenSymbolRequiredWhenNetwork;
     }
+    return null;
+  }
+
+  PaymentAsset? _buildAsset() {
+    final token = _tokenCtrl.text.trim();
+    final contract = _contractCtrl.text.trim();
+
+    if (token.isEmpty && contract.isEmpty && !_hasChainSelection) return null;
+    if (token.isEmpty) return null;
+
+    return PaymentAsset(
+      chain: _chain,
+      tokenSymbol: token,
+      contractAddress: contract.isNotEmpty ? contract : null,
+    );
+  }
+
+  void _emitIfValid() {
+    if (!(_formKey.currentState?.validate() ?? false)) return;
+
+    widget.onChanged(
+      CryptoAddressPaymentMethod(
+        asset: _buildAsset(),
+        address: _addressCtrl.text.trim(),
+        memo: _memoCtrl.text.trim().isNotEmpty ? _memoCtrl.text.trim() : null,
+      ),
+    );
   }
 
   @override
@@ -54,48 +98,88 @@ class _CryptoAddressFormState extends State<CryptoAddressForm> {
 
     if (newData == null && oldData != null) {
       _addressCtrl.clear();
-      _networkCtrl.clear();
-      _destinationTagCtrl.clear();
+      _tokenCtrl.clear();
+      _contractCtrl.clear();
+      _memoCtrl.clear();
+      _chain = ChainNetwork.unspecified;
       return;
     }
 
     if (newData != null && newData != oldData) {
       _addressCtrl.text = newData.address;
-      _networkCtrl.text = newData.network;
-      _destinationTagCtrl.text = newData.destinationTag ?? '';
+      _tokenCtrl.text = newData.asset?.tokenSymbol ?? '';
+      _contractCtrl.text = newData.asset?.contractAddress ?? '';
+      _memoCtrl.text = newData.memo ?? '';
+      _chain = newData.asset?.chain ?? ChainNetwork.unspecified;
+      WidgetsBinding.instance.addPostFrameCallback((_) => _emitIfValid());
     }
   }
 
   @override
   Widget build(BuildContext context) {
-    return Column(
-      children: [
-        TextFormField(
-          readOnly: !widget.isEditable,
-          controller: _addressCtrl,
-          decoration: getInputDecoration(context, 'Crypto address', widget.isEditable),
-          style: getTextFieldStyle(context, widget.isEditable),
-          onChanged: (_) => _emit(),
-          validator: (val) => (val?.isEmpty ?? true) ? 'Enter crypto address' : null,
-        ),
-        const SizedBox(height: 12),
-        TextFormField(
-          readOnly: !widget.isEditable,
-          controller: _networkCtrl,
-          decoration: getInputDecoration(context, 'Network', widget.isEditable),
-          style: getTextFieldStyle(context, widget.isEditable),
-          onChanged: (_) => _emit(),
-          validator: (val) => (val?.isEmpty ?? true) ? 'Enter network' : null,
-        ),
-        const SizedBox(height: 12),
-        TextFormField(
-          readOnly: !widget.isEditable,
-          controller: _destinationTagCtrl,
-          decoration: getInputDecoration(context, 'Destination tag / memo (optional)', widget.isEditable),
-          style: getTextFieldStyle(context, widget.isEditable),
-          onChanged: (_) => _emit(),
-        ),
-      ],
+    final l10n = AppLocalizations.of(context)!;
+
+    return Form(
+      key: _formKey,
+      onChanged: _emitIfValid,
+      child: Column(
+        mainAxisSize: MainAxisSize.min,
+        spacing: 12.0,
+        children: [
+          TextFormField(
+            readOnly: !widget.isEditable,
+            controller: _addressCtrl,
+            decoration: getInputDecoration(context, l10n.cryptoAddressLabel, widget.isEditable),
+            style: getTextFieldStyle(context, widget.isEditable),
+            validator: (val) => _validateAddress(l10n, val),
+          ),
+          DropdownButtonFormField<ChainNetwork>(
+            initialValue: _chain,
+            decoration: getInputDecoration(context, l10n.walletTopUpNetworkLabel, widget.isEditable),
+            items: ChainNetwork.values
+              .map((chain) => DropdownMenuItem(
+                    value: chain,
+                    child: Text(chain.localizedName(context)),
+                  ))
+              .toList(),
+            onChanged: widget.isEditable
+              ? (value) {
+                  if (value == null) return;
+                  setState(() => _chain = value);
+                  _emitIfValid();
+                }
+              : null,
+          ),
+          TextFormField(
+            readOnly: !widget.isEditable,
+            controller: _tokenCtrl,
+            decoration: getInputDecoration(context, l10n.tokenSymbolLabel, widget.isEditable),
+            style: getTextFieldStyle(context, widget.isEditable),
+            validator: (_) => _validateToken(l10n),
+          ),
+          TextFormField(
+            readOnly: !widget.isEditable,
+            controller: _contractCtrl,
+            decoration: getInputDecoration(context, l10n.contractAddressLabel, widget.isEditable),
+            style: getTextFieldStyle(context, widget.isEditable),
+          ),
+          TextFormField(
+            readOnly: !widget.isEditable,
+            controller: _memoCtrl,
+            decoration: getInputDecoration(context, l10n.memoLabel, widget.isEditable),
+            style: getTextFieldStyle(context, widget.isEditable),
+          ),
+        ],
+      ),
     );
   }
+
+  @override
+  void dispose() {
+    _addressCtrl.dispose();
+    _tokenCtrl.dispose();
+    _contractCtrl.dispose();
+    _memoCtrl.dispose();
+    super.dispose();
+  }
 }

frontend/pweb/lib/pages/payment_methods/form.dart

@@ -52,7 +52,7 @@ class PaymentMethodForm extends StatelessWidget {
         initialData: initialData as RussianBankAccountPaymentMethod?,
         isEditable: isEditable,
       ),
-      PaymentType.cryptoAddress => CryptoAddressForm(
+      PaymentType.externalChain => CryptoAddressForm(
         onChanged: onChanged,
         initialData: initialData as CryptoAddressPaymentMethod?,
         isEditable: isEditable,

frontend/pweb/lib/pages/payment_methods/icon.dart

@@ -13,7 +13,10 @@ IconData iconForPaymentType(PaymentType type) {
       return Icons.account_balance_wallet;
     case PaymentType.card:
       return Icons.credit_card;
-    case PaymentType.cryptoAddress:
+    case PaymentType.externalChain:
       return Icons.currency_bitcoin;
+    //TODO: define new payment methods
+    default:
+      return Icons.question_mark;
   }
 }