feat: filtering by status for better math

src/main/java/com/application/munera/repositories/ExpenseRepository.java

@@ -21,5 +21,11 @@ public interface ExpenseRepository extends JpaRepository<Expense, Long>, JpaSpec
     @Query("SELECT e FROM Expense e WHERE YEAR(e.date) = :year")
     List<Expense> findAllByYear(@Param("year") int year);
 
+    @Query("SELECT e FROM Expense e JOIN e.creditors c WHERE c.id = :personId AND e.isResolved = false")
+    Set<Expense> findUnpaidCreditorsExpensesByPersonId(@Param("personId") Long personId);
+
+    @Query("SELECT e FROM Expense e JOIN e.debtors d WHERE d.id = :personId AND e.isResolved = false")
+    Set<Expense> findUnpaidDebtorsExpensesByPersonId(@Param("personId") Long personId);
+
     boolean existsByIdAndIsResolvedTrue(Long id);
 }

src/main/java/com/application/munera/services/ExpenseService.java

@@ -32,6 +32,14 @@ public class ExpenseService {
     public Collection<Expense> findCreditByUser(final Person person) {
         return repository.findCreditorsExpensesByPersonId(person.getId());
     }
+
+    public Collection<Expense> findUnpaidDebtByUser(final Person person) {
+        return repository.findUnpaidDebtorsExpensesByPersonId(person.getId());
+    }
+
+    public Collection<Expense> findUnpaidCreditByUser(final Person person) {
+        return repository.findUnpaidCreditorsExpensesByPersonId(person.getId());
+    }
     public List<Expense> findAll() {return repository.findAll();}
 
     public void update(Expense entity) {

src/main/java/com/application/munera/services/PersonService.java

@@ -60,8 +60,8 @@ public class PersonService {
     }
 
     public BigDecimal calculateNetBalance(final Person person) {
-        final var credit = this.expenseService.findCreditByUser(person).stream().map(Expense::getCost).reduce(BigDecimal.ZERO, BigDecimal::add);
+        final var credit = this.expenseService.findUnpaidCreditByUser(person).stream().map(Expense::getCost).reduce(BigDecimal.ZERO, BigDecimal::add);
-        final var debit = this.expenseService.findDebtByUser(person).stream().map(Expense::getCost).reduce(BigDecimal.ZERO, BigDecimal::add);
+        final var debit = this.expenseService.findUnpaidDebtByUser(person).stream().map(Expense::getCost).reduce(BigDecimal.ZERO, BigDecimal::add);
         return credit.subtract(debit);
     }
 }