1 files changed, 50 insertions, 0 deletions
diff --git a/database.h b/database.h
new file mode 100644
index 0000000..cdde765
--- /dev/null
+++ b/database.h
@@ -0,0 +1,50 @@
+#ifndef DATABASE_H
+#define DATABASE_H
+
+#include <QSqlDatabase>
+#include <QSqlQuery>
+#include <QSqlError>
+#include <QString>
+#include <QList>
+#include <QDate>
+#include "transaction.h"
+
+class Database {
+public:
+    Database();
+    ~Database();
+    
+    bool open(const QString &path);
+    bool createTables();
+    
+    // Transaction operations
+    bool addTransaction(const Transaction &transaction);
+    bool updateTransaction(const Transaction &transaction);
+    bool deleteTransaction(int id);
+    QList<Transaction> getTransactions(const QDate &startDate, const QDate &endDate);
+    QList<Transaction> getAllTransactions();
+    
+    // Recurring rule operations
+    bool addRecurringRule(const RecurringRule &rule);
+    bool updateRecurringRule(const RecurringRule &rule);
+    bool deleteRecurringRule(int id);
+    QList<RecurringRule> getAllRecurringRules();
+    
+    // Reconciliation
+    bool convertToActual(int transactionId, double actualAmount);
+    
+    // Settings
+    QString getSetting(const QString &name, const QString &defaultValue = QString());
+    bool setSetting(const QString &name, const QString &value);
+    
+    QString lastError() const;
+    
+private:
+    QSqlDatabase db;
+    QString errorMsg;
+    
+    Transaction queryToTransaction(QSqlQuery &query);
+    RecurringRule queryToRecurringRule(QSqlQuery &query);
+};
+
+#endif // DATABASE_H