using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Text;

public partial class ajax_Hand : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        string reqHand="";
        string reqAction="";

        if (Request.QueryString["HAND"] != null && !Request.QueryString["HAND"].ToString().Equals(""))
            reqHand = Request.QueryString["HAND"].ToString().ToUpper();

        if (Request.QueryString["ACTION"] != null && !Request.QueryString["ACTION"].ToString().Equals(""))
            reqAction =Request.QueryString["ACTION"].ToString().ToUpper();


        var sb = new StringBuilder();
        BlackjackClasses.User u;

        if(Session["USER"] == null)
        {
            sb.AppendLine("Session User is null");
            Response.Write(sb.ToString());
        }
        else if(reqAction.Equals("DISPLAY") &&
            !(reqHand.Equals("HOUSE") || reqHand.Equals("PLAYER")))
        {
            sb.AppendLine("Invalid Querystring: reqAction= " + reqAction);
            sb.AppendLine("ReqHand = " + reqHand);
            Response.Write(sb.ToString());
        }
        else if(!(reqAction.Equals("DISPLAY")) && !(reqAction.Equals("HIT") || reqAction.Equals("STAY") || reqAction.Equals("DEAL")))
        {
            sb.AppendLine("Invalid Querystring: reqAction= " + reqAction);
            sb.AppendLine("ReqHand = " + reqHand);
            Response.Write(sb.ToString());
        }    
        
        else
        {
            u = (BlackjackClasses.User)Session["USER"];

            if (reqAction.Equals("HIT"))
            {
                u.hit();
                Session["USER"] = u;
            }

            if(reqAction.Equals("DISPLAY"))
            {
                List<BlackjackClasses.Card> handData = new List<BlackjackClasses.Card>();
                if(reqHand.Equals("PLAYER"))
                    handData= u.getPlayerHand();
                if (reqHand.Equals("HOUSE"))
                    handData = u.getHouseHand();

                buildHand(reqHand, sb, handData);
            }

            if (reqAction.Equals("STAY"))
            {
                u.stay();
                Session["USER"] = u;
            }
            
            if (reqAction.Equals("DEAL"))
            {
                u.NewGame();
                Session["USER"] = u;
            }

        }
        Response.Write(sb.ToString());
    }

    private void buildHand(string reqHand, StringBuilder sb,List<BlackjackClasses.Card> cards)
    {
        foreach (BlackjackClasses.Card c in cards)
        {
            int suitInt = (int)c.CardSuit;
            int faceInt = (int)c.FaceValue;

            int pngInt = -1;
            if (faceInt ==1) //an ace
                pngInt = suitInt;
            else // not an ace
                pngInt = (52 - ((faceInt - 1) * 4)) + suitInt;

            sb.AppendLine(buildCard(reqHand.ToLower(), c.CardSuit.ToString(), pngInt));
        }
    }

    private string buildCard(string cardName, string cardSuit, int cardInt)
    {
        return "<div id='div" + cardName + "Card" + cardInt + "' class='card'><img id='imgCard" + cardInt + "'src='img/" + cardInt + ".png' alt='Card" + cardSuit + cardInt + "' /> </div>";
    }
}