using System;
using PizzaService;
using PizzaSystem;

namespace PizzaPresentation
{
    public partial class StudentStart : System.Web.UI.Page
    {
        private StudentService studentService;
 
        protected void Page_Load(object sender, EventArgs e)
        {
            // check if app has yet run, set up APIs
            if (Application["PizzaSys"] == null)
            {
                PizzaConfig pizzaService = new PizzaConfig();
                Application["PizzaSys"] = pizzaService;
            }
            PizzaConfig pizzaSystem = (PizzaConfig)Application["PizzaSys"];
            studentService = pizzaSystem.StudentService;

            if (!IsPostBack)  // only set room no. text on page load, let user's value show later
            {    
                if (Session["room"] != null)
                    RoomNumTextBox.Text = (String)Session["room"];
                else
                    RoomNumTextBox.Text = "";
            }
        }
        // Here if user typed <CR> in text box--treat as submit
        protected void RoomNumTextBox_TextChanged1(object sender, EventArgs e)
        {
            SubmitButton_OnClick(sender, e);
        }
        // if have submit button and text box, need to click back to same
        // page to be sure to get user input from the text box
        public void SubmitButton_OnClick(object sender, EventArgs e)
        {
            String numberStr = RoomNumTextBox.Text;
            try
            {
                int roomNum = Int32.Parse(numberStr);
                Session["room"] = numberStr;
            }
            catch (FormatException e1)
            {
                RoomNumTextBox.Text = "Decimal number here" + e1.Message;
            }

             // If  got room, redirect to next page. 
             if (Session["room"] != null)
                  Response.Redirect("ChooseAction.aspx", false);
        }

    }
}