package scotlandyard.servlets.players;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Arrays;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import scotlandyard.engine.impl.Engine;
import scotlandyard.engine.spec.IGame;
import scotlandyard.engine.spec.IPlayer;
/**
* gets the legal moves that a player can do from his current position, based on the number of tickets and game rules
* @author Hussain Al-Mutawa
* @version 3.0
*/
public class legal_moves_json extends HttpServlet {
private static final long serialVersionUID = 1234234L;
private String gameId,xhash;
public legal_moves_json() {
super();
}
public legal_moves_json(String gameId,String xhash) {
super();
this.gameId=gameId;
this.xhash=xhash;
}
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
final PrintWriter out = response.getWriter();
response.setHeader("Content-Type", "text/plain");
try{
if(request.getParameter("xhash")!=null){
xhash = request.getParameter("xhash");
}
if(xhash==null || "".equals(xhash)){throw new Exception("Unknown HASH");}
if(request.getParameter("selected_game")!=null){
gameId = request.getParameter("selected_game");
}
if(gameId==null || "".equals(gameId)){throw new Exception("Game Id is unknown");}
final IGame game = Engine.instance().games.get(gameId);
if(game==null){throw new Exception("Game is unknown");}
final IPlayer player = game.getPlayer(xhash);
if(player==null){throw new Exception("player is unknown");}
final String moves = Arrays.toString(game.getLegalMoves(player.getEmail())).replace("{", "[").replace("}", "]").replace("null", "0");
final IPlayer mrx = game.getMrX();
if(mrx==null){
throw new Exception("MR X Is not there");
}
String position = "-1";
if(game.isRoundExposingMrX(game.getRound())){
position = mrx.getPosition()+"";
}
out.print("{\"msg\" : "+ moves +", \"mrx\" : { \"position\" : "+ position +", \"face\" : \""+ mrx.getIcon() +"\", \"name\" : \""+mrx.getName()+"\"} }");
}catch(Exception e){
out.print("{\"msg\" : \"EXCEPTION : "+(e.getMessage()+"").replace("\"", "'")+"\", \"className\" : \""+getClass().getName()+"\"}");
}
}
}