/* ownCloud Android client application
 *   Copyright (C) 2011  Bartek Przybylski
 *
 *   This program is free software: you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation, either version 3 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

package eu.alefzero.owncloud.syncadapter;

import java.io.IOException;

import org.apache.jackrabbit.webdav.DavException;
import org.apache.jackrabbit.webdav.MultiStatus;
import org.apache.jackrabbit.webdav.client.methods.PropFindMethod;

import android.accounts.Account;
import android.accounts.AuthenticatorException;
import android.accounts.OperationCanceledException;
import android.content.ContentProviderClient;
import android.content.Context;
import android.content.Intent;
import android.content.SyncResult;
import android.os.Bundle;
import android.util.Log;
import eu.alefzero.owncloud.datamodel.FileDataStorageManager;
import eu.alefzero.owncloud.datamodel.OCFile;
import eu.alefzero.webdav.WebdavEntry;

/**
 * SyncAdapter implementation for syncing sample SyncAdapter contacts to the
 * platform ContactOperations provider.
 * 
 * @author Bartek Przybylski
 */
public class FileSyncAdapter extends AbstractOwnCloudSyncAdapter {

	public FileSyncAdapter(Context context, boolean autoInitialize) {
		super(context, autoInitialize);
	}
	
	@Override
	public synchronized void onPerformSync(
			Account account, 
			Bundle extras, 
			String authority, 
			ContentProviderClient provider, 
			SyncResult syncResult) {

			this.setAccount(account);
			this.setContentProvider(provider);
			this.setStorageManager(new FileDataStorageManager(account, getContentProvider()));

			Log.d("ASD", "syncing owncloud account " + account.name);
			
			Intent i = new Intent(FileSyncService.SYNC_MESSAGE);
			i.putExtra(FileSyncService.IN_PROGRESS, true);
			i.putExtra(FileSyncService.ACCOUNT_NAME, account.name);
			getContext().sendStickyBroadcast(i);
			
			PropFindMethod query;
      try {
        Log.e("ASD", getUri().toString());
        query = new PropFindMethod(getUri().toString()+"/");
        getClient().executeMethod(query);
        MultiStatus resp = null;
        resp = query.getResponseBodyAsMultiStatus();
        
        if (resp.getResponses().length > 0) {
          WebdavEntry we = new WebdavEntry(resp.getResponses()[0]);
          OCFile file = fillOCFile(we);
          file.setParentId(0);
          getStorageManager().saveFile(file);
          fetchData(getUri().toString(), syncResult, file.getFileId());
        }
      } catch (OperationCanceledException e) {
        e.printStackTrace();
      } catch (AuthenticatorException e) {
        syncResult.stats.numAuthExceptions++;
        e.printStackTrace();
      } catch (IOException e) {
        syncResult.stats.numIoExceptions++;
        e.printStackTrace();
      } catch (DavException e) {
        syncResult.stats.numIoExceptions++;
        e.printStackTrace();
      }
      i.putExtra(FileSyncService.IN_PROGRESS, false);
      getContext().sendStickyBroadcast(i);
	}

  private void fetchData(String uri, SyncResult syncResult, long parentId) {
    try {
      PropFindMethod query = new PropFindMethod(uri);
      getClient().executeMethod(query);
      MultiStatus resp = null;
      resp = query.getResponseBodyAsMultiStatus();
      for (int i = 1; i < resp.getResponses().length; ++i) {
        WebdavEntry we = new WebdavEntry(resp.getResponses()[i]);
        OCFile file = fillOCFile(we);
        file.setParentId(parentId);
        getStorageManager().saveFile(file);
        if (parentId == 0) parentId = file.getFileId();
        if (we.contentType().equals("DIR"))
          fetchData(getUri().toString() + we.path(), syncResult, file.getFileId());
      }
    } catch (OperationCanceledException e) {
      e.printStackTrace();
    } catch (AuthenticatorException e) {
      syncResult.stats.numAuthExceptions++;
      e.printStackTrace();
    } catch (IOException e) {
      syncResult.stats.numIoExceptions++;
      e.printStackTrace();
    } catch (DavException e) {
      syncResult.stats.numIoExceptions++;
      e.printStackTrace();
    }
  }
  
  private OCFile fillOCFile(WebdavEntry we) {
    OCFile file = new OCFile(we.path());
    file.setCreationTimestamp(we.createTimestamp());
    file.setFileLength(we.contentLength());
    file.setMimetype(we.contentType());
    file.setModificationTimestamp(we.modifiedTimesamp());
    return file;
  }
	
}