/// <summary>
/// This method cancels an order. Once the order is cancelled it will replace the goods back to the basket that were held against that order.
///
/// Test Case: Req-7
/// </summary>
/// <param name="order_id">The order id of the cancelled order</param>
/// <returns>Message indicating order has been cancelled</returns>
public string CancelOrder(int order_id)
{
using (SqlConnection conn = new SqlConnection(defaultConnection))
{
string query = "update cust_order set cancelled_ts = getdate() " +
"where order_id = @order_id";
SqlCommand myCmd = new SqlCommand(query, conn);
myCmd.Parameters.AddWithValue("@order_id", order_id);
conn.Open();
myCmd.ExecuteNonQuery();
// get the order items
List <CustOrderItem> coiList = new List <CustOrderItem>();
BasketDAL basket = new BasketDAL();
int basket_id = GetOrderBasketId(order_id);
coiList = GetOrderItems(order_id);
// add stock back to basket (if order was already assigned to a basket. basket_id = 0 means not assigned yet)
if (basket_id > 0)
{
foreach (CustOrderItem coi in coiList)
{
basket.ReturnBasketItem(basket_id, coi.product_id, coi.qty);
}
}
return("Your order has been cancelled");
}
}
/// <summary>
/// This method determines which basket to give the order to.
///
/// Test Case: Req-8, Req-9, Req-11
/// </summary>
/// <param name="delivery_location">Object containing the delivery location</param>
/// <param name="order_id">The related order id</param>
/// <returns>KeyValuePair: basket_id, distance to customer</returns>
private KeyValuePair <int, int> FindAvailableBasket(LocationCoordinates delivery_location, int order_id)
{
int basket_id = 0;
int min_distance = 9999;
// KeyValuePair - Key = bsaket_id; Value = location_cell_id
var basketList = new List <KeyValuePair <int, int> >();
var basket = new BasketDAL();
var locationDAL = new LocationDAL();
basketList = basket.BasketHasStock(order_id);
// get basket that is closest to delivery location
foreach (KeyValuePair <int, int> kvp in basketList)
{
var basket_location = locationDAL.GetLocationCell(kvp.Value);
int basket_distance = locationDAL.CalculateDistanceToCustomer(delivery_location.x, delivery_location.y, basket_location.x_coord, basket_location.y_coord);
if (basket_distance < min_distance)
{
min_distance = basket_distance;
basket_id = kvp.Key;
}
}
return(new KeyValuePair <int, int>(basket_id, min_distance));
}
