Feat: Macht die Dashboard-Seite funktional

2025-12-31 16:44:29 +01:00
parent f765ba6268
commit 4014757319
9 changed files with 845 additions and 239 deletions
--- a/lib/Pages/Dashboard/current_balance.dart
+++ b/lib/Pages/Dashboard/current_balance.dart
@@ -0,0 +1,142 @@
+import 'package:flutter/material.dart';
+
+import '../../Controller/account_controller.dart';
+import '../../Controller/transaction_controller.dart';
+import '../../Repositories/transaction_repository.dart';
+
+/// Gibt eine Übersicht über den aktuellen Kontostand
+/// und der Veränderung zum Vormonat zurück
+class CurrentBalance extends StatefulWidget {
+  /// Erstellt eine neue Instanz dieser Klasse
+  const CurrentBalance({super.key});
+
+  @override
+  State<StatefulWidget> createState() => _CurrentBalanceState();
+}
+
+class _CurrentBalanceState extends State<CurrentBalance> {
+  final TransactionController _transactionController = TransactionController();
+  final AccountController _accountController = AccountController();
+
+  final TransactionRepository _transactionRepository = TransactionRepository();
+
+  @override
+  void initState() {
+    super.initState();
+
+    _transactionController.transactions.addListener(() {
+      if (mounted) {
+        setState(() {});
+      }
+    });
+  }
+
+  @override
+  Widget build(final BuildContext context) => FutureBuilder(
+    future: _getBalance(),
+    builder:
+        (
+          final BuildContext context,
+          final AsyncSnapshot<(double, double, double)> snapshot,
+        ) {
+          final ThemeData theme = Theme.of(context);
+
+          Widget widget;
+
+          if (snapshot.hasData) {
+            final double balanceOfLastMonth = snapshot.data!.$1;
+            final double balanceNow = snapshot.data!.$2;
+            final double balanceOfThisMonth = snapshot.data!.$3;
+
+            final double diff = balanceOfThisMonth - balanceOfLastMonth;
+
+            widget = Row(
+              mainAxisAlignment: MainAxisAlignment.spaceBetween,
+              children: <Widget>[
+                Column(
+                  crossAxisAlignment: CrossAxisAlignment.start,
+                  children: <Widget>[
+                    Text('Aktuell', style: theme.textTheme.bodyMedium),
+                    const SizedBox(height: 8),
+                    Text(
+                      '${balanceNow.toStringAsFixed(2)} €',
+                      style: theme.textTheme.headlineSmall?.copyWith(
+                        fontWeight: FontWeight.bold,
+                      ),
+                    ),
+                  ],
+                ),
+
+                Column(
+                  crossAxisAlignment: CrossAxisAlignment.end,
+                  children: <Widget>[
+                    Text(
+                      'Differenz zum Vormonat',
+                      style: theme.textTheme.bodySmall?.copyWith(
+                        color: theme.colorScheme.onSurface,
+                      ),
+                    ),
+                    const SizedBox(height: 8),
+                    Row(
+                      children: <Widget>[
+                        Icon(
+                          diff >= 0 ? Icons.arrow_upward : Icons.arrow_downward,
+                          color: diff >= 0 ? Colors.green : Colors.red,
+                        ),
+                        const SizedBox(width: 4),
+                        Text(
+                          '${diff.abs().toStringAsFixed(2)} €',
+                          style: theme.textTheme.titleMedium?.copyWith(
+                            fontWeight: FontWeight.bold,
+                            color: diff >= 0 ? Colors.green : Colors.red,
+                          ),
+                        ),
+                      ],
+                    ),
+                  ],
+                ),
+              ],
+            );
+          } else if (snapshot.hasError) {
+            widget = Column(
+              children: [
+                Icon(Icons.error, color: theme.colorScheme.error),
+                const Text('Fehler beim holen der letzten Transaktionen!'),
+              ],
+            );
+          } else {
+            widget = const Center(child: CircularProgressIndicator());
+          }
+
+          return Container(
+            padding: const EdgeInsets.all(16),
+            decoration: BoxDecoration(
+              color: theme.colorScheme.primaryContainer,
+              borderRadius: BorderRadius.circular(16),
+            ),
+            child: widget,
+          );
+        },
+  );
+
+  Future<(double, double, double)> _getBalance() async {
+    final now = DateTime.now();
+    final dateOfLastMonth = DateTime(now.year, now.month, 0);
+    final dateOfThisMonth = DateTime(now.year, now.month + 1, 0);
+
+    final double balanceOfLastMonth = await _transactionRepository.balance(
+      account: _accountController.selected.value,
+      until: dateOfLastMonth,
+    );
+    final double balanceNow = await _transactionRepository.balance(
+      account: _accountController.selected.value,
+      until: now,
+    );
+    final double balanceOfThisMonth = await _transactionRepository.balance(
+      account: _accountController.selected.value,
+      until: dateOfThisMonth,
+    );
+
+    return (balanceOfLastMonth, balanceNow, balanceOfThisMonth);
+  }
+}