Add checkout controller

Controllers/CheckoutController.cs

@@ -0,0 +1,85 @@
+using kuro_desserts.Data;
+using kuro_desserts.Models;
+using Microsoft.AspNetCore.Mvc;
+
+namespace kuro_desserts.Controllers;
+
+[ApiController]
+[Route("api/[controller]")]
+[Produces("application/json")]
+public class CheckoutController : ControllerBase
+{
+    private readonly Context _context;
+
+    public CheckoutController(Context context)
+    {
+        _context = context;
+    }
+
+    /// <summary>
+    /// Save orders to database
+    /// </summary>
+    /// <param name="request">In orders you find products to add to cart,
+    /// the cart references a user and an address to the orders</param>
+    /// <response code="200">Success</response>
+    /// <response code="400">Bad Request</response>
+    /// <response code="401">Unauthorized</response>
+    /// <response code="403">Forbidden</response>
+    /// <response code="404">Not Found</response>
+    [HttpPost]
+    public IActionResult Checkout([FromBody] CheckoutRequest request)
+    {
+        // Get authenticated user
+        var user = (User?)HttpContext.Items["User"];
+        if (user == null) return Unauthorized("Please login to do this");
+
+        // Track cart if address belong to logged user 
+        var cart = request.Cart;
+        var userAddress = _context.Addresses.Find(cart.AddressId);
+
+        if (userAddress == null) return NotFound($"Couldn't find address with id {cart.AddressId}");
+        if (userAddress.UserId != user.Id) return StatusCode(403);
+
+        cart.UserId = user.Id;
+        _context.Carts.Add(cart);
+
+        // Track orders if ids exist
+        foreach (var order in request.Orders)
+        {
+            if (_context.Desserts.Find(order.DessertId) == null)
+                return NotFound($"Couldn't find dessert with id {order.DessertId}");
+            if (_context.Flavors.Find(order.FlavorId) == null)
+                return NotFound($"Couldn't find flavor with id {order.FlavorId}");
+
+            order.CartId = request.Cart.Id;
+        }
+
+        _context.Orders.AddRange(request.Orders);
+
+        // Track Order Toppings if provided and if topping ids exist
+        if (request.OrderToppings != null)
+        {
+            foreach (var orderTopping in request.OrderToppings)
+            {
+                if (_context.Toppings.Find(orderTopping.ToppingId) == null)
+                    return NotFound($"Couldn't find topping with id {orderTopping.ToppingId}");
+
+                try
+                {
+                    orderTopping.OrderId = request.Orders.ToList()[orderTopping.OrderListIndex].Id;
+                }
+                catch (ArgumentOutOfRangeException)
+                {
+                    return BadRequest(
+                        "OrderListIndex was out of range. Must be non-negative and less than the size of the order list.");
+                }
+            }
+
+            _context.OrderToppings.AddRange(request.OrderToppings);
+        }
+
+        // Save changes if not error found
+        _context.SaveChanges();
+        return Ok("Successfully checkout");
+    }
+}