feat: total expense by user calculations

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

@@ -58,4 +58,10 @@ public class PersonService {
     public BigDecimal calculateCredit(final Person person) {
         return this.expenseService.findCreditByUser(person).stream().map(Expense::getCost).reduce(BigDecimal.ZERO, BigDecimal::add);
     }
+
+    public BigDecimal calculateTotalExpenses(final Person person) {
+        final var credit = this.expenseService.findCreditByUser(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);
+        return credit.add(debit);
+    }
 }

src/main/java/com/application/munera/views/expenses/CategoriesView.java

@@ -196,6 +196,5 @@ public class CategoriesView extends Div implements BeforeEnterObserver {
     private void populateForm(Category value) {
         this.category = value;
         binder.readBean(this.category);
-
     }
 }

src/main/java/com/application/munera/views/expenses/ExpensesView.java

@@ -87,9 +87,7 @@ public class ExpensesView extends Div implements BeforeEnterObserver {
         // Configure Grid
         grid.addColumn(Expense::getName).setHeader("Name").setSortable(true);
         grid.addColumn(Expense::getCost).setHeader("Amount").setSortable(true);
-        grid.addColumn(expenseCategory -> expenseCategory.getCategory().getName())
-                .setHeader("Category")
-                .setSortable(true);
+        grid.addColumn(expenseCategory -> expenseCategory.getCategory().getName()).setHeader("Category").setSortable(true);
         grid.addColumn(Expense::getPeriodInterval).setHeader("Period Interval").setSortable(true);
         grid.addColumn(Expense::getPeriodUnit).setHeader("Period Unit").setSortable(true);
         grid.addColumn(Expense::getDate).setHeader("Date").setSortable(true);

src/main/java/com/application/munera/views/expenses/PeopleView.java

@@ -71,6 +71,7 @@ public class PeopleView extends Div implements BeforeEnterObserver {
         grid.addColumn(Person::getEmail).setHeader("Email").setSortable(true);
         grid.addColumn(personService::calculateDebt).setHeader("Debt").setSortable(true);
         grid.addColumn(personService::calculateCredit).setHeader("Credit").setSortable(true);
+        grid.addColumn(personService::calculateTotalExpenses).setHeader("Total Expenses value").setSortable(true);
         grid.getColumns().forEach(col -> col.setAutoWidth(true));
         grid.setItems(query -> personService.list(
                         PageRequest.of(query.getPage(), query.getPageSize(), VaadinSpringDataHelpers.toSpringDataSort(query)))