RPG-Maker Quartier

package v3.model;

import java.sql.Timestamp;

/**
 * ReadInformation is a kind of Transport Object to return search information
 * from provider searches in one format.
 *
 */
public class ReadInformation {
   private String name;
   private String picture;
   private String filter;
   private String EAN;
   private String ISBN;
   private int price;
   private Timestamp readTimestamp;
   
   
   public ReadInformation (String name, String picture, String filter, String EAN, String ISBN, int price, Timestamp timestamp) {
      setName(name);
      setPicture(picture);
      setFilter(filter);
      setEAN(EAN);
      setISBN(ISBN);
      setPrice(price);
      setReadTimestamp(timestamp);
   }
   
   
   /* TEN MIRRION GETTER AND SETTER */
}

package v3.model;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;
import java.sql.Timestamp;
import java.util.ArrayList;
import java.util.Date;

/**
 * buchDeReader searches buch.de for the user's input and returns an
 * array of standardized ReadInformation.
 */
public class BuchDeReader {
   public static ArrayList<ReadInformation> read(String searchText, String filter) {
      String buchDeURL = buildURL(searchText, filter);
      String wholePage = readURL(buchDeURL);
      ArrayList<ReadInformation> readInformation = evaluateURL(wholePage, filter);

      return readInformation;
   }


   // builds the URL we want to use
   private static String buildURL(String searchText, String filter) {
      // build buchDeURL - default link plus searchText
      String buchDeURL = "http://www.buch.de/shop/home/suche/?sq=" + searchText;

      // build buchDeURL - additional searchText (filters, if not available in category)
      if (filter.equals("CD")) {
         buchDeURL = buchDeURL + " CD";
      } else if (filter.equals("DVD")) {
            buchDeURL = buchDeURL + " DVD";
      } else if (filter.equals("Blu-ray")) {
            buchDeURL = buchDeURL + " Blu-ray";
      }

      // build buchDeURL - search category (filter, if available)
      if (filter.equals("Buch")) {
            buchDeURL = buchDeURL + "&sswg=BUCH";
      } else if (filter.equals("eBook")) {
            buchDeURL = buchDeURL + "&sswg=EBOOK";
      } else {
               buchDeURL = buchDeURL + "&sswg=ANY";
      }
      
      buchDeURL = buchDeURL.replace(' ', '+');
      
      return buchDeURL;
   }


   private static String readURL(String buchDeURL) {
      // call buchDeURL, save HTML as String
      String wholePage = "";
      
      try {
         URL url = new URL(buchDeURL);
         URLConnection urlConnection = url.openConnection();
         InputStream result = urlConnection.getInputStream();

         BufferedReader reader = new BufferedReader(new InputStreamReader(result));
         String line = null;
         while ((line = reader.readLine()) != null) {
            wholePage = wholePage + line;
            // System.out.println(line);
         }
         reader.close();
      } catch (Exception e) {
         // PANIC MODE ENGAGE
         e.printStackTrace();
      }

      return wholePage;
   }
   
   
   private static ArrayList<ReadInformation> evaluateURL(String wholePage, String filter) {
      ArrayList<ReadInformation> readInformationArray = new ArrayList<ReadInformation>();
      
      if (wholePage.contains("</span>keine Treffer.")) {
         // "keine Treffer" in wholePage - no hits, nothing to do
         
      } else if (wholePage.contains("OpenGraph")) {
         // "OpenGraph" in wholePage - one hit
         addOneElement(readInformationArray, filter, wholePage);
      } else {
         // else - multiple hits
         addMultipleElements(readInformationArray, filter, wholePage);
      }
      
      return readInformationArray;
   }


   private static void addOneElement(ArrayList<ReadInformation> readInformationArray, String filter, String wholePage) {
      
      String name = wholePage;
      name = cutText(name, "og:title\" content=\"", 19, "\" />");
      
      String picture = wholePage;
      picture = cutText(picture, "og:image\" content=\"", 19, "\"/>");
      
      String EAN = wholePage;
      EAN = cutText(EAN, "eanNumber : '", 13, "'");
      
      String ISBN = wholePage;
      ISBN = cutText(ISBN, "isbnNumber : '", 14, "'");
      
      String priceText = wholePage;
      priceText = cutText(priceText, "<span class=\"pm_preis b9Value\">", 31, "</span>");
      int price = deleteComma(priceText);
      
      readInformationArray.add(new ReadInformation(name, picture, filter, EAN, ISBN, price, new Timestamp(new Date().getTime())));
   }
   
   
   private static int deleteComma(String priceText) {
      StringBuffer stringBuffer = new StringBuffer(priceText);
      int i;
      
      while ((i = stringBuffer.indexOf(",")) > -1) {
         stringBuffer.deleteCharAt(i);
      }
      
      int price = new Integer(stringBuffer.toString());
      return price;
   }
   
   
   private static String cutText(String textToCut, String startPhrase, int startPhraseLength, String endPhrase) {
      textToCut = textToCut.substring(textToCut.indexOf(startPhrase) + startPhraseLength);   // cut left
      textToCut = textToCut.substring(0, textToCut.indexOf(endPhrase));                  // cut right
      return textToCut;
   }


   private static void addMultipleElements(ArrayList<ReadInformation> readInformationArray, String filter, String wholePage) {
      String currentLink = null;
      String currentPage = null;
      // read all articles like single articles by calling their page
      while (wholePage.contains("col1\"><a href=\"")) {
         wholePage = wholePage.substring(wholePage.indexOf("col1\"><a href=\"") + 15);
         currentLink = cutText(wholePage, "h", 0, "\" style=");
         currentPage = readURL(currentLink);
         addOneElement(readInformationArray, filter, currentPage);
      }
   }
}