<%@ page language="java"
         contentType="text/html; charset=UTF-8"
         pageEncoding="UTF-8"
        %>
<%@ page import="org.json.simple.JSONObject" %>
<%@ page import="org.json.simple.JSONValue" %>
<%@ page import="edu.uic.evl.hands.N3VizDataJSONFileCollector" %>
<%@ page import="edu.uic.evl.hands.N3VizDataCollectorInterface" %>
<%
    JSONObject replyObj;

    try {
        System.out.println("-> Preparing N3 viz data based on request interval.");

        if (request != null) {
            String strJSON = request.getParameter("strJSON");

            if (strJSON != null) {
                JSONObject objJSON = (JSONObject) JSONValue.parseWithException(strJSON);
                if (objJSON != null) {                    
                    Object msg = objJSON.get("interval");                    
                    N3VizDataCollectorInterface collector = new N3VizDataJSONFileCollector();
                    
                    if (msg != null) {
                        String intervalRange = msg.toString();
                        System.out.println("-> Requested interval: '" + intervalRange + "'");

                        collector.setSourceKey(intervalRange);
                        replyObj = collector.goCollect();

                        if(replyObj == null) {
                            replyObj = new JSONObject();
                            replyObj.put("source", "nullFromCollector");
                        }

                        out.write(replyObj.toJSONString());
                    }
                }
            }

        }
    } catch (Exception e) {
        // Default empty reply
        replyObj = new JSONObject();
        replyObj.put("source", N3VizDataJSONFileCollector.DEFAULT_SOURCE_KEY);
        out.write(replyObj.toJSONString());
        
        e.printStackTrace();
    }
%>