package eu.alefzero.owncloud.files.services;

import java.net.URLEncoder;

import eu.alefzero.owncloud.AccountUtils;
import eu.alefzero.owncloud.R;
import eu.alefzero.owncloud.authenticator.AccountAuthenticator;
import eu.alefzero.owncloud.utils.OwnCloudVersion;
import eu.alefzero.webdav.WebdavClient;
import android.accounts.Account;
import android.accounts.AccountManager;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.Service;
import android.content.Intent;
import android.net.Uri;
import android.os.Handler;
import android.os.HandlerThread;
import android.os.IBinder;
import android.os.Looper;
import android.os.Message;
import android.os.Process;
import android.util.Log;
import android.webkit.MimeTypeMap;
import android.widget.RemoteViews;
import android.widget.Toast;

public class FileUploader extends Service {

  public static final String KEY_LOCAL_FILE = "LOCAL_FILE";
  public static final String KEY_REMOTE_FILE = "REMOTE_FILE";
  public static final String KEY_ACCOUNT = "ACCOUNT";
  public static final String KEY_UPLOAD_TYPE = "UPLOAD_TYPE";
  
  public static final int UPLOAD_SINGLE_FILE = 0;
  public static final int UPLOAD_MULTIPLE_FILES = 1;
  
  private static final String TAG = "FileUploader"; 
  private NotificationManager mNotificationManager;
  private Looper mServiceLooper;
  private ServiceHandler mServiceHandler;
  private AccountManager mAccountManager;
  private Account mAccount;
  private String[] mLocalPaths, mRemotePaths;
  private boolean mResult;
  private int mUploadType;
  
  @Override
  public IBinder onBind(Intent arg0) {
    return null;
  }
  
  private final class ServiceHandler extends Handler {
    public ServiceHandler(Looper looper) {
      super(looper);
    }
    @Override
    public void handleMessage(Message msg) {
      uploadFile();
      stopSelf(msg.arg1);
    }
  }
  
  @Override
  public void onCreate() {
    super.onCreate();
    mNotificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
    HandlerThread thread = new HandlerThread("FileUploaderThread", Process.THREAD_PRIORITY_BACKGROUND);
    thread.start();
    mServiceLooper = thread.getLooper();
    mServiceHandler = new ServiceHandler(mServiceLooper); 
    mAccountManager = AccountManager.get(this);
  }
  
  @Override
  public int onStartCommand(Intent intent, int flags, int startId) {
    if (!intent.hasExtra(KEY_ACCOUNT) && !intent.hasExtra(KEY_UPLOAD_TYPE)) {
      Log.e(TAG, "Not enought data in intent provided");
      return Service.START_NOT_STICKY;
    }
    mAccount = intent.getParcelableExtra(KEY_ACCOUNT);
    mUploadType = intent.getIntExtra(KEY_UPLOAD_TYPE, -1);
    if (mUploadType == -1) {
      Log.e(TAG, "Incorrect upload type provided");
      return Service.START_NOT_STICKY;
    }
    if (mUploadType == UPLOAD_SINGLE_FILE) {
      mLocalPaths = new String[] { intent.getStringExtra(KEY_LOCAL_FILE) };
      mRemotePaths = new String[] { intent.getStringExtra(KEY_REMOTE_FILE) };
    } else { // mUploadType == UPLOAD_MULTIPLE_FILES
      mLocalPaths = intent.getStringArrayExtra(KEY_LOCAL_FILE);
      mRemotePaths = intent.getStringArrayExtra(KEY_REMOTE_FILE);
    }
    
    for (int i = 0; i < mRemotePaths.length; ++i)
      mRemotePaths[i] = mRemotePaths[i].replace(' ', '+');
    
    if (mLocalPaths.length != mRemotePaths.length) {
      Log.e(TAG, "Remote paths and local paths are not equal!");
      return Service.START_NOT_STICKY;
    }
      
    Message msg = mServiceHandler.obtainMessage();
    msg.arg1 = startId;
    mServiceHandler.sendMessage(msg);
    
    return Service.START_NOT_STICKY;
  }

  public void run() {
    if (mResult) {
      Toast.makeText(this, "Upload successfull", Toast.LENGTH_SHORT).show();
    } else {
      Toast.makeText(this, "No i kupa", Toast.LENGTH_SHORT).show();
    }
  }

    public void uploadFile() {
      String baseUrl = mAccountManager.getUserData(mAccount, AccountAuthenticator.KEY_OC_BASE_URL),
             ocVerStr = mAccountManager.getUserData(mAccount, AccountAuthenticator.KEY_OC_VERSION);
      OwnCloudVersion ocVer = new OwnCloudVersion(ocVerStr);
      String webdav_path = AccountUtils.getWebdavPath(ocVer);
      Uri ocUri = Uri.parse(baseUrl + webdav_path);
      String username = mAccount.name.substring(0, mAccount.name.lastIndexOf('@'));
      String password = mAccountManager.getPassword(mAccount);
      Notification notification = new Notification(eu.alefzero.owncloud.R.drawable.icon,
                                                   "Uploading...", System.currentTimeMillis());
      notification.flags |= Notification.FLAG_ONGOING_EVENT;
      notification.contentView = new RemoteViews(getApplicationContext().getPackageName(),
                                                 R.layout.progressbar_layout);
      notification.contentView.setProgressBar(R.id.status_progress, mLocalPaths.length-1, 0, false);
      notification.contentView.setImageViewResource(R.id.status_icon, R.drawable.icon);
      
      mNotificationManager.notify(42, notification);

      WebdavClient wc = new WebdavClient(ocUri);
      wc.setCredentials(username, password);
      
      for (int i = 0; i < mLocalPaths.length; ++i) {
        String mimeType = MimeTypeMap.getSingleton().getMimeTypeFromExtension(mLocalPaths[i].substring(mLocalPaths[i].lastIndexOf('.')+1));
        mResult = false;
        if (wc.putFile(mLocalPaths[i], mRemotePaths[i], mimeType)) {
          mResult |= true;
        }
        notification.contentView.setProgressBar(R.id.status_progress, mLocalPaths.length-1, i+1, false);
        
        mNotificationManager.notify(42, notification);
      }
      //notification.contentView.setProgressBar(R.id.status_progress, mLocalPaths.length-1, mLocalPaths.length-1, false);
      mNotificationManager.cancel(42);
      run();
    }
}