More payments (WIP)

assets/translations/en.json

@@ -15,8 +15,8 @@
   "search_user_title": "User to pay",
   "search_user": "Search (user or public key)",
   "search_user_btn": "Search user",
-  "g1_form_pay_desc": "Description",
-  "g1_form_pay_hint": "Enter a description (optional)",
+  "g1_form_pay_desc": "Comment",
+  "g1_form_pay_hint": "Enter a comment (optional)",
   "code_card_title": "Code repository",
   "intro_1_title": "Welcome to our Ğ1 wallet!",
   "intro_1_description": "With this wallet, you can easily and securely store, send, and receive Ğ1 currency (also known as 'June').",

assets/translations/es.json

@@ -15,8 +15,8 @@
   "search_user_title": "Usuario a pagar",
   "search_user": "Buscar (usuari@ o clave pública)",
   "search_user_btn": "Buscar usuari@",
-  "g1_form_pay_desc": "Descripción",
-  "g1_form_pay_hint": "Introduzca una descripción (opcional)",
+  "g1_form_pay_desc": "Comment",
+  "g1_form_pay_hint": "Introduzca un comentario (opcional)",
   "code_card_title": "Repositorio de código",
   "intro_1_title": "¡Bienvenido a nuestro monedero Ğ1!",
   "intro_1_description": "Con este monedero, puede almacenar, enviar y recibir fácil y seguramente la moneda Ğ1 (también conocida como 'Juna').",

lib/data/models/payment_cubit.dart

@@ -35,9 +35,7 @@ class PaymentCubit extends HydratedCubit<PaymentState> {
 
   void selectKey(String publicKey) {
     final PaymentState newState = PaymentState(
-        publicKey: publicKey,
-        amount: state.amount,
-        description: state.description);
+        publicKey: publicKey, amount: state.amount, comment: state.comment);
     emit(newState);
   }
 
@@ -51,4 +49,8 @@ class PaymentCubit extends HydratedCubit<PaymentState> {
   void clearRecipient() {
     emit(PaymentState.emptyPayment);
   }
+
+  void selectAmount(double amount) {
+    emit(state.copyWith(amount: amount));
+  }
 }

lib/data/models/payment_state.dart

@@ -3,6 +3,7 @@ import 'dart:typed_data';
 import 'package:equatable/equatable.dart';
 import 'package:json_annotation/json_annotation.dart';
 
+import '../../g1/g1_helper.dart';
 import 'model_utils.dart';
 
 part 'payment_state.g.dart';
@@ -13,7 +14,7 @@ class PaymentState extends Equatable {
     required this.publicKey,
     this.nick,
     this.avatar,
-    this.description = '',
+    this.comment = '',
     this.amount,
     this.isSent = false,
   });
@@ -21,11 +22,14 @@ class PaymentState extends Equatable {
   factory PaymentState.fromJson(Map<String, dynamic> json) =>
       _$PaymentStateFromJson(json);
 
+  bool canBeSent() =>
+      !isSent && validateKey(publicKey) && amount != null && amount! > 0;
+
   final String publicKey;
   final String? nick;
   @JsonKey(fromJson: uIntFromList, toJson: uIntToList)
   final Uint8List? avatar;
-  final String description;
+  final String comment;
   final double? amount;
   final bool isSent;
 
@@ -43,7 +47,7 @@ class PaymentState extends Equatable {
       publicKey: publicKey ?? this.publicKey,
       nick: nick ?? this.nick,
       avatar: avatar ?? this.avatar,
-      description: description ?? this.description,
+      comment: description ?? this.comment,
       amount: amount ?? this.amount,
       isSent: isSent ?? this.isSent,
     );
@@ -61,5 +65,5 @@ class PaymentState extends Equatable {
 
   @override
   List<Object?> get props =>
-      <dynamic>[publicKey, nick, avatar, description, amount, isSent];
+      <dynamic>[publicKey, nick, avatar, comment, amount, isSent];
 }

lib/data/models/payment_state.g.dart

@@ -10,7 +10,7 @@ PaymentState _$PaymentStateFromJson(Map<String, dynamic> json) => PaymentState(
       publicKey: json['publicKey'] as String,
       nick: json['nick'] as String?,
       avatar: uIntFromList(json['avatar'] as List<int>),
-      description: json['description'] as String? ?? '',
+      comment: json['comment'] as String? ?? '',
       amount: (json['amount'] as num?)?.toDouble(),
       isSent: json['isSent'] as bool? ?? false,
     );
@@ -20,7 +20,7 @@ Map<String, dynamic> _$PaymentStateToJson(PaymentState instance) =>
       'publicKey': instance.publicKey,
       'nick': instance.nick,
       'avatar': uIntToList(instance.avatar),
-      'description': instance.description,
+      'comment': instance.comment,
       'amount': instance.amount,
       'isSent': instance.isSent,
     };

lib/g1/api.dart

 import 'dart:convert';
-
 // import 'dart:developer' as developer;
 import 'dart:io';
 
+import 'package:durt/durt.dart';
 import 'package:flutter/foundation.dart';
 import 'package:http/http.dart' as http;
 import 'package:http/http.dart';
@@ -12,6 +12,7 @@ import '../data/models/node.dart';
 import '../data/models/node_manager.dart';
 import '../data/models/node_type.dart';
 import '../main.dart';
+import '../shared_prefs.dart';
 import 'g1_helper.dart';
 
 // Tx history
@@ -192,6 +193,11 @@ int nodesWorking(NodeType type) => NodeManager()
     .toList()
     .length;
 
+List<Node> nodesWorkingList(NodeType type) => NodeManager()
+    .nodeList(type)
+    .where((Node n) => n.errors < NodeManager.maxNodeErrors)
+    .toList();
+
 Future<List<Node>> _fetchDuniterNodesFromPeers() async {
   final List<Node> lNodes = <Node>[];
   // To compare with something...
@@ -415,3 +421,21 @@ Future<http.Response> _requestWithRetry(
   throw Exception(
       'Cannot make the request to any of the ${nodes.length} nodes');
 }
+
+Future<String> pay(
+    {required String to, required double amount, String? comment}) async {
+  final List<Node> nodes = nodesWorkingList(NodeType.gva);
+  // reorder list to use others
+  if (nodes.isNotEmpty) {
+    nodes.shuffle();
+    final Gva gva = Gva(node: nodes.first.url);
+    final CesiumWallet wallet = await SharedPreferencesHelper().getWallet();
+    final String response = await gva.pay(
+        recipient: to,
+        amount: amount,
+        comment: comment ?? '',
+        cesiumSeed: wallet.seed);
+    return response;
+  }
+  return 'Sorry: I cannot find a working node to send the transaction';
+}

lib/ui/screens/g1_textfield.dart

 import 'package:easy_localization/easy_localization.dart';
 import 'package:flutter/material.dart';
+import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:flutter_svg/flutter_svg.dart';
 
+import '../../data/models/payment_cubit.dart';
+import '../../data/models/payment_state.dart';
+
 class G1PayAmountField extends StatelessWidget {
   const G1PayAmountField({super.key, required this.controller});
 
   final TextEditingController controller;
 
   @override
-  Widget build(BuildContext context) {
-    return TextField(
-      controller: controller,
-      keyboardType: const TextInputType.numberWithOptions(decimal: true),
-      decoration: InputDecoration(
-        labelText: tr('g1_amount'),
-        hintText: tr('g1_amount_hint'),
-        prefixIcon: Padding(
-          padding: const EdgeInsets.all(10.0),
-          child: SvgPicture.asset(
-            colorFilter:
-                ColorFilter.mode(Colors.purple.shade600, BlendMode.srcIn),
-            'assets/img/gbrevedot.svg',
-            width: 20.0,
-            height: 20.0,
-          ),
-        ),
-        border: const OutlineInputBorder(),
-      ),
-    );
-  }
+  Widget build(BuildContext context) => BlocBuilder<PaymentCubit, PaymentState>(
+      builder: (BuildContext context, PaymentState state) => TextField(
+            controller: controller,
+            keyboardType: const TextInputType.numberWithOptions(decimal: true),
+            onChanged: (String? value) {
+              if (value != null) {
+                context.read<PaymentCubit>().selectAmount(double.parse(value));
+              }
+            },
+            decoration: InputDecoration(
+              labelText: tr('g1_amount'),
+              hintText: tr('g1_amount_hint'),
+              prefixIcon: Padding(
+                padding: const EdgeInsets.all(10.0),
+                child: SvgPicture.asset(
+                  colorFilter:
+                      ColorFilter.mode(Colors.purple.shade600, BlendMode.srcIn),
+                  'assets/img/gbrevedot.svg',
+                  width: 20.0,
+                  height: 20.0,
+                ),
+              ),
+              border: const OutlineInputBorder(),
+            ),
+          ));
 }

lib/ui/screens/pay_form.dart

@@ -4,6 +4,9 @@ import 'package:flutter_bloc/flutter_bloc.dart';
 
 import '../../data/models/payment_cubit.dart';
 import '../../data/models/payment_state.dart';
+import '../../data/models/transaction_cubit.dart';
+import '../../g1/api.dart';
+import '../ui_helpers.dart';
 import 'g1_textfield.dart';
 
 class PayForm extends StatefulWidget {
@@ -16,7 +19,7 @@ class PayForm extends StatefulWidget {
 class _PayFormState extends State<PayForm> {
   final GlobalKey<FormState> _formKey = GlobalKey<FormState>();
   final TextEditingController _amountController = TextEditingController();
-  final TextEditingController _descController = TextEditingController();
+  final TextEditingController _commentController = TextEditingController();
 
   @override
   Widget build(BuildContext context) {
@@ -31,7 +34,7 @@ class _PayFormState extends State<PayForm> {
             G1PayAmountField(controller: _amountController),
             const SizedBox(height: 10.0),
             TextField(
-              controller: _descController,
+              controller: _commentController,
               decoration: InputDecoration(
                 labelText: tr('g1_form_pay_desc'),
                 hintText: tr('g1_form_pay_hint'),
@@ -41,14 +44,21 @@ class _PayFormState extends State<PayForm> {
             ),
             const SizedBox(height: 10.0),
             ElevatedButton(
-              onPressed:
-                  null /* () {
-              if (_formKey.currentState != null &&
-                  _formKey.currentState!.validate()) {
-                // Enviar formulario
-              }
-            }, */
-              ,
+              onPressed: !state.canBeSent() &&
+                      state.amount != null &&
+                      _weHaveBalance(context, state.amount!)
+                  ? () {}
+                  : () async {
+                      final String response = await pay(
+                          to: state.publicKey,
+                          comment: state.comment,
+                          amount: state.amount!);
+                      if (!mounted) {
+                        // Cannot show a tooltip if the widget is not now visible
+                        return;
+                      }
+                      showTooltip(context, '', response);
+                    },
               child: Text(tr('g1_form_pay_send')),
             ),
           ],
@@ -56,4 +66,7 @@ class _PayFormState extends State<PayForm> {
       );
     });
   }
+
+  bool _weHaveBalance(BuildContext context, double amount) =>
+      context.read<TransactionsCubit>().balance > amount;
 }