93 lines
2.8 KiB
Dart
93 lines
2.8 KiB
Dart
import 'package:drift/drift.dart';
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import '../Entities/drift_database.dart';
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import '../Services/database_service.dart';
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/// Funktionen zum interagieren mit der Datenbank für die Transaktionen
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class TransactionRepository {
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final AppDatabase _db = DatabaseService().database;
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/// Fügt eine neue Transaktion zur Datenbank hinzu
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Future<Transaction?> add(final TransactionsCompanion transaction) async {
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final int id = await _db.into(_db.transactions).insert(transaction);
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return find(id);
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}
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/// Entfernt eine Transaktion aus der Datenbank
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Future<int> remove(final Transaction transaction) => (_db.delete(
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_db.transactions,
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)..where((final t) => t.id.equals(transaction.id))).go();
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/// Sucht eine Transaktion anhand seiner Id aus der Datenbank
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Future<Transaction?> find(final int id) => (_db.select(
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_db.transactions,
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)..where((final t) => t.id.equals(id))).getSingleOrNull();
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/// Sucht Transaktionen anhand der gegebenen Parameter aus der Datenbank
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Future<List<Transaction>> findBy({
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final int? id,
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final String? name,
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final DateTime? date,
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final DateTime? dateBefore,
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final DateTime? dateAfter,
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final double? amount,
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final double? amountMin,
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final double? amountMax,
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final String? orderBy,
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}) {
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final SimpleSelectStatement<$TransactionsTable, Transaction> query = _db
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.select(_db.transactions);
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if (id != null) {
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query.where((final t) => t.id.equals(id));
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}
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if (name != null && name.isNotEmpty) {
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query.where((final t) => t.name.like('%$name%'));
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}
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if (date != null) {
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query.where((final t) => t.date.equals(date));
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}
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if (dateBefore != null) {
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query.where((final t) => t.date.isBiggerThanValue(dateBefore));
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}
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if (dateAfter != null) {
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query.where((final t) => t.date.isSmallerThanValue(dateAfter));
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}
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if (amount != null) {
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query.where((final t) => t.amount.equals(amount));
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}
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if (amountMin != null) {
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query.where((final t) => t.amount.isBiggerThanValue(amountMin));
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}
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if (amountMax != null) {
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query.where((final t) => t.amount.isSmallerThanValue(amountMax));
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}
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if (orderBy != null) {
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switch (orderBy) {
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case 'nameAsc':
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query.orderBy([(final t) => OrderingTerm.asc(t.name)]);
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case 'nameDesc':
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query.orderBy([(final t) => OrderingTerm.desc(t.name)]);
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case 'dateAsc':
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query.orderBy([(final t) => OrderingTerm.asc(t.date)]);
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case 'dateDesc':
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query.orderBy([(final t) => OrderingTerm.desc(t.date)]);
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case 'amountAsc':
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query.orderBy([(final t) => OrderingTerm.asc(t.amount)]);
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case 'amountDesc':
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query.orderBy([(final t) => OrderingTerm.desc(t.amount)]);
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}
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}
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return query.get();
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}
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}
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