package org.vamsas.test.simpleclient;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.InputStream;
import java.io.InputStreamReader;

import org.vamsas.client.simpleclient.VamsasArchiveReader;
import org.vamsas.objects.core.ApplicationData;
import org.vamsas.objects.core.VAMSAS;
import org.vamsas.objects.core.VamsasDocument;

public class ArchiveReader {
  public static boolean reportDocument(VamsasDocument document, VamsasArchiveReader archive) {
    if (document!=null) {
      System.out.print("Vamsas Document version '"+document.getVersion()+"'");
      System.out.print("Document contains "+document.getVAMSASCount()+" VAMSAS Elements and "+document.getApplicationDataCount()+" elements.\n");
      if (document.getApplicationDataCount()>0) {
        System.out.print("There are "+document.getApplicationDataCount()+" ApplicationData references.\n");
        ApplicationData appd[] = document.getApplicationData();
        for (int i=0,j=appd.length; i<j; i++) {
          System.out.print("Application "+i+": '"+appd[i].getName()+"'\nVersion '"+appd[i].getVersion()+"'\nURN: '"+appd[i].getUrn()+"'\n");
          System.out.print("AppData is ");
          if (appd[i].getAppDataChoice().getDataReference()!=null) {
            String appData=appd[i].getAppDataChoice().getDataReference();
            if (appData.length()>1) {
              System.out.print("a reference ("+appData+")");
              InputStream jstrm;
              if ((jstrm=archive.getAppdataStream(appData))!=null)
                System.out.println(" which resolves to a JarEntry.");
              else {
                System.out.println(" which does not resolve to a JarEntry.");
                System.err.println("Unresolved appdata reference '"+appData+"'");
              }
            } else {
              System.out.println("an empty reference.");
            }
          } else {
            System.out.println("an embedded chunk of "+appd[i].getAppDataChoice().getData().length+" bytes.");
          }
        }
          
      }
      return true;
    } else {
      System.out.print("Document Object is null");
    }
    return false;
  }
  
  public static boolean rootReport(VAMSAS[] roots) {
    if (roots!=null) {
      for (int i=0; i<roots.length; i++) {
        VAMSAS r = roots[i];
        System.out.print("Vamsas Root "+i+" (id="
            +((r.getId()!=null) ? r.getId():"<none>")
            +") contains "+r.getDataSetCount()+" DataSets, "
            + r.getTreeCount()+" Global trees");
      }
      return true;
    }
    return false;
  }
  
  public static void main(String args[]) {
    
    try {
      File av = new File(args[0]);
      VamsasArchiveReader var = new VamsasArchiveReader(av);
      VAMSAS roots[]=null;
      if (var.isValid()) {
        InputStreamReader vdoc = new InputStreamReader(var.getVamsasDocumentStream());
        VamsasDocument doc = VamsasDocument.unmarshal(vdoc);
        if (reportDocument(doc, var)) {
          roots = doc.getVAMSAS();
        }
      } else {
        InputStream vxmlis = var.getVamsasXmlStream();
        
        if (vxmlis!=null) { // Might be an old vamsas file.
          BufferedInputStream ixml = new BufferedInputStream(var.getVamsasXmlStream());
          InputStreamReader vxml = new InputStreamReader(ixml);
          VAMSAS root;
          // unmarshal seems to always close the stream (should check this)
          if ((root = VAMSAS.unmarshal(vxml))!=null) {
            System.out.println("Read a root.");
            roots = new VAMSAS[1];
            roots[0] = root;
          }
        }
      }
      if (!rootReport(roots))
        System.err.print(args[0]+" is not a valid vamsas archive.");
    } catch (Exception e) {
      e.printStackTrace(System.err);
    }
  }
}