package org.paneris.bibliomania.metasearch.bol;

 import java.io.File;

 import java.io.FileNotFoundException;

 import java.io.IOException;

 import java.net.URL;

 import java.util.Enumeration;

 import org.melati.poem.transaction.ToTidyList;

 import org.melati.util.IoUtils;

 import org.melati.util.UTF8URLEncoder;

 import org.paneris.bibliomania.BookStocking;

 import org.paneris.bibliomania.metasearch.BOLAndBOBBackendBase;

 import org.paneris.bibliomania.metasearch.BookPageBase;

 import org.paneris.bibliomania.metasearch.BookStockingFactory;

 import com.sleepycat.db.DatabaseException;

 public class Backend extends BOLAndBOBBackendBase {

   public Backend(File dbHome, int isbnOfPrdidCacheSize)

     throws FileNotFoundException, DatabaseException {

     super(

       dbHome,

       "bol_isbnAndImageOfPrdid.db",

       isbnOfPrdidCacheSize,

       "http://www.uk.bol.com");

   }

   public String productURL_nonaffil(BookStocking stocking) {

     return "http://www.uk.bol.com/cec/cstage?ecaction=boldlprdview&"

       + "PrdId="

       + stocking.getVendorproductid_unsafe();

   }

   public byte[] productPage_nonaffil(BookStocking stocking)

     throws IOException {

     return IoUtils.slurp(new URL(productURL_nonaffil(stocking)), 32768, 100000);

   }

   protected BookPageBase bookPage(byte[] text) {

     return new BookPage(text);

   }

   private int bfmid = 1389056;

   private int siteid = 29472511;

   private String bfastURL(String op, String prdId) {

     return "http://service.bfast.com/bfast/"

       + op

       + "?"

       + "bfmid="

       + bfmid

       + "&siteid="

       + siteid

       + "&"

       + "bfpid=0&"

     + // this must be present but is "internal"

     // according to Jonathan Kestel of BOL

     "bfmtype=B&PrdId=" + prdId;

   }

   public String notifyOfferedLinkHTML(String prdId) {

     return "<IMG SRC=\""

       + bfastURL("serve", prdId)

       + "\" "

       + "BORDER=0 WIDTH=1 HEIGHT=1 NOSAVE>";

   }

   public String productURL(String prdId) {

     return bfastURL("click", prdId);

   }

   public String productURL(BookStocking stocking) {

     return productURL(stocking.getVendorproductid_unsafe());

   }

   public String notifiedOfferedLinkHTML(BookStocking stocking) {

     return notifyOfferedLinkHTML(stocking.getVendorproductid_unsafe());

   }

   /**

    * Doesn't work with prdid

    */

   public String thumbnailURL(String isbn) {

     return "http://www.uk.bol.com/multimedia/image/bookcover/"

       + "thumb"

       + isbn

       + ".gif";

   }

   public String searchURL(

     String title,

     String author,

     String publisher,

     String keyword) {

     return "http://www.uk.bol.com/cec/cstage?ecaction=booksearch"

       + "&prdTmp=b_src_mainresults_top.uk.htm"

       + "&startnum=1&increment=20&count=0"

       + "&query_type=BS_SIMPLE"

       + "&title_ent="

       + (title == null ? "" : UTF8URLEncoder.encode(title))

       + "&author_ent="

       + (author == null ? "" : UTF8URLEncoder.encode(author))

       + "&publisher_ent="

       + (publisher == null ? "" : UTF8URLEncoder.encode(publisher))

       + "&keyword_ent="

       + (keyword == null ? "" : UTF8URLEncoder.encode(keyword))

       + "&keyword_option=ALL_KEYWORDS";

   }

   public Enumeration booksMatching(

     BookStockingFactory stockings,

     String title,

     String author,

     String publisher,

     String keyword,

     ToTidyList toTidy)

     throws IOException {

     return new SearchResults(

       IoUtils.slurp(

         new URL(searchURL(title, author, publisher, keyword)),

         65536),

       stockings);

   }

 }