/* Copyright 2010 ESRI
* 
* All rights reserved under the copyright laws of the United States
* and applicable international laws, treaties, and conventions.
* 
* You may freely redistribute and use this sample code, with or
* without modification, provided you include the original copyright
* notice and use restrictions.
* 
* See the use restrictions.
* 
*/
package com.esri.arcgis.sample.upload;

import com.esri.adf.web.data.GraphicElement;
import com.esri.adf.web.data.WebContext;
import com.esri.adf.web.data.WebGraphics;
import com.esri.adf.web.data.geometry.WebPoint;
import com.esri.adf.web.data.geometry.WebSpatialReference;
import com.esri.adf.web.data.symbol.WebSimpleMarkerSymbol;
import com.esri.adf.web.util.WebUtil;
import java.io.BufferedReader;
import java.io.StringReader;
import java.util.Map;
import java.util.Random;
import java.util.StringTokenizer;

/**
 * Bean to handle uploading of comma separated points file
 */
public class UploadBean {
  private String id; //upload id
  private String filename; //upload filename
  private WebContext webContext;
  
  public String getId() {
    return this.id;
  }

  public void setId(String id) {
    this.id = id;
  }
  
  public String getFilename() {
    return this.filename;
  }
  
  public void setFilename(String filename) {
    this.filename = filename;
  }
  
  public WebContext getWebContext() {
    return this.webContext;
  }
  
  public void setWebContext(WebContext webContext) {
    this.webContext = webContext;
  }

  /**
   * This method parses the points stored in the uploaded file and adds the points
   * to the web graphics.
   */
  public void drawPoints() {
    try {
      //get data from session map
      Map sessionMap = WebUtil.getExternalContext().getSessionMap();
      byte[] data = (byte[]) sessionMap.get(this.id);
      sessionMap.remove(this.id);

      //get spatial reference & web graphics for current web context
      WebSpatialReference sprf = webContext.getSpatialReference();
      WebGraphics graphics = webContext.getWebGraphics();

      //set symbology to use for all points
      WebSimpleMarkerSymbol markerSymbol = new WebSimpleMarkerSymbol();
      markerSymbol.setAngle(0);
      Random rand = new Random();
      String colorStr = (rand.nextInt(255)+1) + "," + (rand.nextInt(255)+1) + "," + (rand.nextInt(255)+1);
      markerSymbol.setColor(colorStr);
      markerSymbol.setMarkerType(WebSimpleMarkerSymbol.CIRCLE);
      markerSymbol.setOutlineColor("0,0,0");
      markerSymbol.setTransparency(1.0);
      markerSymbol.setWidth(50);

      //parse uploaded file
      BufferedReader in = new BufferedReader(new StringReader(new String(data)));
      String line;
      while ((line = in.readLine()) != null) {
        StringTokenizer tokenizer = new StringTokenizer(line, ",");
        double x = Double.parseDouble(tokenizer.nextToken());
        double y = Double.parseDouble(tokenizer.nextToken());
        WebPoint point = new WebPoint(x, y, sprf);

        //add graphic elements to the web graphics
        GraphicElement element = new GraphicElement();
        element.setSymbol(markerSymbol);
        element.setGeometry(point);
        graphics.addGraphics(element);
      }
    }
    catch (Exception e) {
      e.printStackTrace();
    }
  }
}