Controllers/ExpenseController.cs

@@ -0,0 +1,44 @@
+using FirmTracker_Server.nHibernate.Expenses;
+using Microsoft.AspNetCore.Mvc;
+namespace FirmTracker_Server.Controllers
+{
+    [Route("api/[controller]")]
+    [ApiController]
+    public class ExpensesController : ControllerBase
+    {
+        private readonly ExpenseCRUD _expenseCrud;
+        
+        public ExpensesController()
+        {
+            _expenseCrud = new ExpenseCRUD();
+        }
+        // POST: api/Expenses
+        [HttpPost]
+        [ProducesResponseType(201)] // Created
+        [ProducesResponseType(400)] // Bad Request
+        public IActionResult CreateExpense([FromBody] Expense expense) { 
+        try
+            {
+                _expenseCrud.AddExpense(expense);
+                return CreatedAtAction("GetExpense", new { id = expense.Id }, expense);
+            }
+        catch (System.Exception ex) {
+                return BadRequest(ex.Message);
+                    }
+        }
+
+        // GET: api/Expenses
+        [HttpGet("{id}")]
+        [ProducesResponseType(200)] // Created
+        [ProducesResponseType(400)] // Bad Request
+        public IActionResult GetExpense(int id)
+        {
+            var expense = _expenseCrud.GetExpense(id);
+            if (expense == null)
+            {
+                return NotFound();
+            }
+            return Ok(expense);
+        }
+    }
+}

TestClass.cs

@@ -2,6 +2,7 @@
 using FirmTracker_Server.nHibernate; 
 using FirmTracker_Server.nHibernate.Products;
 using FirmTracker_Server.nHibernate.Transactions;
+using FirmTracker_Server.nHibernate.Expenses;
 using NHibernate;
 
 namespace FirmTracker_Server
@@ -37,13 +38,23 @@ namespace FirmTracker_Server
                 PaymentType = "Karta kredytowa",
             };
 
+            var expense1 = new Expense
+            {
+                Date = DateTime.Now,
+                TotalPrice = 10.5m,
+                Description = "testowy rozchód"
+            };
+
             try
             {
                 FirmTracker_Server.nHibernate.Products.ProductCRUD crud = new ProductCRUD();
                 FirmTracker_Server.nHibernate.Transactions.TransactionCRUD transactionCrud = new nHibernate.Transactions.TransactionCRUD();
+                ExpenseCRUD expenseCrud = new ExpenseCRUD();
                 crud.AddProduct(product);
                 crud.AddProduct(product2);
                 transactionCrud.AddTransaction(transaction1);
+                expenseCrud.AddExpense(expense1);
+                
 
                 List<TransactionProduct> testTransactionProducts = new List<TransactionProduct>  {
          new TransactionProduct { ProductID = 1, Quantity = 2 },

nHIbernate/Expenses/Expense.cs

@@ -0,0 +1,10 @@
+namespace FirmTracker_Server.nHibernate.Expenses
+{
+    public class Expense
+    {
+        public virtual int Id { get; set; }
+        public virtual DateTime Date { get; set; }
+        public virtual decimal TotalPrice { get; set; }
+        public virtual string Description { get; set; }
+    }
+}

nHIbernate/Expenses/ExpenseCRUD.cs

@@ -0,0 +1,38 @@
+using FirmTracker_Server.nHibernate;
+
+namespace FirmTracker_Server.nHibernate.Expenses
+{
+    public class ExpenseCRUD
+    {
+        public void AddExpense(Expense expense)
+        {
+            using (var session = SessionFactory.OpenSession())
+            using (var transaction = session.BeginTransaction())
+            {
+                try
+                {
+                    session.Save(expense);
+                    transaction.Commit();
+                }
+                catch 
+                { 
+                    transaction.Rollback();
+                    throw;
+                }
+            }
+        }
+        public Expense GetExpense(int expenseId) {
+            using (var session = SessionFactory.OpenSession())
+            {
+                /*var query = session.CreateQuery(@"
+                SELECT e
+                FROM Expense e
+                WHERE e.Id = expenseId
+                ");
+                query.SetParameter("expenseId", expenseId);
+                var expense = query.UniqueResult<Expense>();*/
+                return session.Get<Expense>(expenseId);
+            }
+        }
+    }
+}

nHIbernate/Expenses/ExpenseMapping.cs

@@ -0,0 +1,17 @@
+using FluentNHibernate.Mapping;
+
+namespace FirmTracker_Server.nHibernate.Expenses
+{
+    public class ExpenseMapping : ClassMap<Expense>
+    {
+        public ExpenseMapping()
+        {
+            Table("Expenses");
+            Id(x => x.Id).GeneratedBy.Identity();
+            Map(x => x.Date);
+            Map(x => x.TotalPrice);
+            Map(x => x.Description);
+
+        }
+    }
+}

nHIbernate/SessionFactory.cs

@@ -32,7 +32,8 @@ namespace FirmTracker_Server.nHibernate
                     .AddFromAssemblyOf<Transactions.TransactionMapping>()
                     .AddFromAssemblyOf<Transactions.TransactionProductMapping>()
                     .AddFromAssemblyOf<Transactions.Transaction2Mapping>()
-                    .AddFromAssemblyOf<Transactions.TransactionWithProductsMapping>();
+                    .AddFromAssemblyOf<Transactions.TransactionWithProductsMapping>()
+                    .AddFromAssemblyOf<Expenses.ExpenseMapping>();
                 })
                 .ExposeConfiguration(cfg => new SchemaExport(cfg).Create(true, true))  //SchemaUpdate . Execute  dla only update
                 .BuildSessionFactory();