content: /*
   * Copyright 2013 Chris Banes
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package com.zhaojian.jolly.controller;
  
  import java.util.ArrayList;
  import java.util.HashSet;
  import java.util.Iterator;
  import java.util.List;
  import java.util.Vector;
  
  import android.content.Context;
  
  import com.zhaojian.jolly.listener.OnNumChangeListener;
  import com.zhaojian.jolly.model.PhotoUpload;
  import com.zhaojian.jolly.selectphotos.SelectPhotoApplication;
  
  public class PhotoUploadController {
  
  	private Vector list = new Vector();
  
  	public void addMyEventListener(OnNumChangeListener me) {
  		list.add(me);
  	}
  
  	public void deleteMyEventListener(OnNumChangeListener me) {
  		list.remove(me);
  	}
  
  	public void notifyMyEvent() {
  		Iterator it = list.iterator();
  		while (it.hasNext()) {
  			((OnNumChangeListener) it.next()).OnChangeNum();
  		}
  	}
  
  	public static PhotoUploadController getFromContext(Context context) {
  		return SelectPhotoApplication.getInstanse().getPhotoUploadController();
  	}
  
  	private static List<PhotoUpload> checkListForInvalid(final Context context,
  			final List<PhotoUpload> uploads) {
  		ArrayList<PhotoUpload> toBeRemoved = null;
  
  		for (PhotoUpload upload : uploads) {
  			if (!upload.isValid(context)) {
  				if (null == toBeRemoved) {
  					toBeRemoved = new ArrayList<PhotoUpload>();
  				}
  				toBeRemoved.add(upload);
  			}
  		}
  
  		if (null != toBeRemoved) {
  			uploads.removeAll(toBeRemoved);
  		}
  		return toBeRemoved;
  	}
  
  	private final Context mContext;
  	private final ArrayList<PhotoUpload> mSelectedPhotoList;
  
  	private final ArrayList<PhotoUpload> mUploadingList;
  
  	public PhotoUploadController(Context context) {
  		mContext = context;
  		mSelectedPhotoList = new ArrayList<PhotoUpload>();
  		mUploadingList = new ArrayList<PhotoUpload>();
  
  		populateFromDatabase();
  	}
  
  	public synchronized boolean addSelection(final PhotoUpload selection) {
  		boolean result = false;
  
  		if (!mSelectedPhotoList.contains(selection)) {
  			selection.setUploadState(PhotoUpload.STATE_SELECTED);
  			mSelectedPhotoList.add(selection);
  
  			result = true;
  		}
  
  		// Remove it from Upload list if it's there
  		if (mUploadingList.contains(selection)) {
  			mUploadingList.remove(selection);
  		}
  		
  		notifyMyEvent();
  		
  		return result;
  	}
  
  	public synchronized void addSelections(List<PhotoUpload> selections) {
  		final HashSet<PhotoUpload> currentSelectionsSet = new HashSet<PhotoUpload>(
  				mSelectedPhotoList);
  		final HashSet<PhotoUpload> currentUploadSet = new HashSet<PhotoUpload>(
  				mUploadingList);
  		boolean listModified = false;
  
  		for (final PhotoUpload selection : selections) {
  			if (!currentSelectionsSet.contains(selection)) {
  
  				// Remove it from Upload list if it's there
  				if (currentUploadSet.contains(selection)) {
  					mUploadingList.remove(selection);
  				}
  
  				selection.setUploadState(PhotoUpload.STATE_SELECTED);
  				mSelectedPhotoList.add(selection);
  				listModified = true;
  			}
  		}
  
  	}
  
  	public boolean addUpload(PhotoUpload selection) {
  		if (null != selection && selection.isValid(mContext)) {
  			synchronized (this) {
  				if (!mUploadingList.contains(selection)) {
  					selection.setUploadState(PhotoUpload.STATE_UPLOAD_WAITING);
  
  					mUploadingList.add(selection);
  					mSelectedPhotoList.remove(selection);
  
  					return true;
  				}
  			}
  		}
  
  		return false;
  	}
  
  	public synchronized void addUploadsFromSelected() {
  
  		ArrayList<PhotoUpload> eventResult = new ArrayList<PhotoUpload>(
  				mSelectedPhotoList);
  
  		mUploadingList.addAll(mSelectedPhotoList);
  		mSelectedPhotoList.clear();
  
  	}
  
  	public synchronized void clearSelected() {
  		if (!mSelectedPhotoList.isEmpty()) {
  
  			// Reset States (as may still be in cache)
  			for (PhotoUpload upload : mSelectedPhotoList) {
  				upload.setUploadState(PhotoUpload.STATE_NONE);
  			}
  
  			ArrayList<PhotoUpload> eventResult = new ArrayList<PhotoUpload>(
  					mSelectedPhotoList);
  
  			// Clear from memory
  			mSelectedPhotoList.clear();
  
  		}
  	}
  
  	public synchronized int getActiveUploadsCount() {
  		int count = 0;
  		for (PhotoUpload upload : mUploadingList) {
  			if (upload.getUploadState() != PhotoUpload.STATE_UPLOAD_COMPLETED) {
  				count++;
  			}
  		}
  		return count;
  	}
  
  	public synchronized PhotoUpload getNextUpload() {
  		for (PhotoUpload selection : mUploadingList) {
  			if (selection.getUploadState() == PhotoUpload.STATE_UPLOAD_WAITING) {
  				return selection;
  			}
  		}
  		return null;
  	}
  
  	public synchronized List<PhotoUpload> getSelected() {
  		checkSelectedForInvalid(true);
  		return new ArrayList<PhotoUpload>(mSelectedPhotoList);
  	}
  
  	public synchronized int getSelectedCount() {
  		return mSelectedPhotoList.size();
  	}
  
  	public synchronized List<PhotoUpload> getUploadingUploads() {
  		return new ArrayList<PhotoUpload>(mUploadingList);
  	}
  
  	public synchronized int getUploadsCount() {
  		return mUploadingList.size();
  	}
  
  	public synchronized boolean hasSelections() {
  		return !mSelectedPhotoList.isEmpty();
  	}
  
  	public synchronized boolean hasSelectionsWithPlace() {
  		for (PhotoUpload selection : mSelectedPhotoList) {
  			if (selection.hasPlace()) {
  				return true;
  			}
  		}
  		return false;
  	}
  
  	public synchronized boolean hasUploads() {
  		return !mUploadingList.isEmpty();
  	}
  
  	public synchronized boolean hasWaitingUploads() {
  		for (PhotoUpload upload : mUploadingList) {
  			if (upload.getUploadState() == PhotoUpload.STATE_UPLOAD_WAITING) {
  				return true;
  			}
  		}
  		return false;
  	}
  
  	public synchronized boolean isOnUploadList(PhotoUpload selection) {
  		return mUploadingList.contains(selection);
  	}
  
  	public synchronized boolean isSelected(PhotoUpload selection) {
  		return mSelectedPhotoList.contains(selection);
  	}
  
  	public synchronized boolean moveFailedToSelected() {
  		boolean result = false;
  
  		final Iterator<PhotoUpload> iterator = mUploadingList.iterator();
  		PhotoUpload upload;
  
  		while (iterator.hasNext()) {
  			upload = iterator.next();
  
  			if (upload.getUploadState() == PhotoUpload.STATE_UPLOAD_ERROR) {
  				// Reset State and add to selection list
  				upload.setUploadState(PhotoUpload.STATE_SELECTED);
  				mSelectedPhotoList.add(upload);
  
  				// Remove from Uploading list
  				iterator.remove();
  				result = true;
  			}
  		}
  
  		return result;
  	}
  
  	public boolean removeSelection(final PhotoUpload selection) {
  		boolean removed = false;
  		synchronized (this) {
  			removed = mSelectedPhotoList.remove(selection);
  		}
  
  		if (removed) {
  			// Reset State (as may still be in cache)
  			selection.setUploadState(PhotoUpload.STATE_NONE);
  
  		}
  		
  		notifyMyEvent();
  
  		return removed;
  	}
  
  	public void removeUpload(final PhotoUpload selection) {
  		boolean removed = false;
  		synchronized (this) {
  			removed = mUploadingList.remove(selection);
  		}
  
  		if (removed) {
  
  			// Reset State (as may still be in cache)
  			selection.setUploadState(PhotoUpload.STATE_NONE);
  
  		}
  	}
  
  	public void reset() {
  		// Clear the cache
  		PhotoUpload.clearCache();
  
  		synchronized (this) {
  			// Clear the internal lists
  			mSelectedPhotoList.clear();
  			mUploadingList.clear();
  		}
  
  	}
  
  	public synchronized void updateDatabase() {
  
  	}
  
  	void populateFromDatabase() {
  	}
  
  	private void checkSelectedForInvalid(final boolean sendEvent) {
  	}
  
  	private void checkUploadsForInvalid(final boolean sendEvent) {
  	}
  
  	private void postEvent(Object event) {
  	}
  
  }
  