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package de.thedevstack.conversationsplus.ui;

import android.app.PendingIntent;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;
import android.widget.Toast;

import java.net.URLConnection;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;

import de.thedevstack.conversationsplus.ConversationsPlusPreferences;
import de.thedevstack.conversationsplus.ui.dialogs.UserDecisionDialog;
import de.thedevstack.conversationsplus.ui.listeners.ResizePictureUserDecisionListener;
import de.thedevstack.conversationsplus.ui.listeners.ShareWithResizePictureUserDecisionListener;
import de.thedevstack.conversationsplus.Config;
import de.thedevstack.conversationsplus.R;
import de.thedevstack.conversationsplus.entities.Account;
import de.thedevstack.conversationsplus.entities.Conversation;
import de.thedevstack.conversationsplus.entities.Message;
import de.thedevstack.conversations.services.XmppConnectionService;
import de.thedevstack.conversationsplus.ui.adapter.ConversationAdapter;
import de.thedevstack.conversationsplus.xmpp.jid.InvalidJidException;
import de.thedevstack.conversationsplus.xmpp.jid.Jid;

public class ShareWithActivity extends XmppActivity implements XmppConnectionService.OnConversationUpdate {

	@Override
	public void onConversationUpdate() {
		refreshUi();
	}

	private class Share {
		public List<Uri> uris = new ArrayList<>();
		public boolean image;
		public String account;
		public String contact;
		public String text;
		public String uuid;
		public boolean multiple = false;
	}

	private Share share;

	private static final int REQUEST_START_NEW_CONVERSATION = 0x0501;
	private ListView mListView;
	private ConversationAdapter mAdapter;
	private List<Conversation> mConversations = new ArrayList<>();
	private Toast mToast;
	private AtomicInteger attachmentCounter = new AtomicInteger(0);

	private UiCallback<Message> attachFileCallback = new UiCallback<Message>() {

		@Override
		public void userInputRequried(PendingIntent pi, Message object) {
			// TODO Auto-generated method stub

		}

		@Override
		public void success(final Message message) {
			xmppConnectionService.sendMessage(message);
			runOnUiThread(new Runnable() {
				@Override
				public void run() {
					if (attachmentCounter.decrementAndGet() <=0 ) {
						int resId;
						if (share.image && share.multiple) {
							resId = R.string.shared_images_with_x;
						} else if (share.image) {
							resId = R.string.shared_image_with_x;
						} else {
							resId = R.string.shared_file_with_x;
						}
						replaceToast(getString(resId, message.getConversation().getName()));
						if (share.uuid != null) {
							finish();
						} else {
							switchToConversation(message.getConversation());
						}
					}
				}
			});
		}

		@Override
		public void error(final int errorCode, Message object) {
			runOnUiThread(new Runnable() {
				@Override
				public void run() {
					replaceToast(getString(errorCode));
					if (attachmentCounter.decrementAndGet() <=0 ) {
						finish();
					}
				}
			});
		}
	};

	protected void hideToast() {
		if (mToast != null) {
			mToast.cancel();
		}
	}

	protected void replaceToast(String msg) {
		hideToast();
		mToast = Toast.makeText(this, msg ,Toast.LENGTH_LONG);
		mToast.show();
	}

	protected void onActivityResult(int requestCode, int resultCode, final Intent data) {
		super.onActivityResult(requestCode, resultCode, data);
		if (requestCode == REQUEST_START_NEW_CONVERSATION
				&& resultCode == RESULT_OK) {
			share.contact = data.getStringExtra("contact");
			share.account = data.getStringExtra(EXTRA_ACCOUNT);
		}
		if (xmppConnectionServiceBound
				&& share != null
				&& share.contact != null
				&& share.account != null) {
			share();
		}
	}

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);

		if (getActionBar() != null) {
			getActionBar().setDisplayHomeAsUpEnabled(false);
			getActionBar().setHomeButtonEnabled(false);
		}

		setContentView(R.layout.share_with);
		setTitle(getString(R.string.title_activity_sharewith));

		mListView = (ListView) findViewById(R.id.choose_conversation_list);
		mAdapter = new ConversationAdapter(this, this.mConversations);
		mListView.setAdapter(mAdapter);
		mListView.setOnItemClickListener(new OnItemClickListener() {

			@Override
			public void onItemClick(AdapterView<?> arg0, View arg1, int position, long arg3) {
				share(mConversations.get(position));
			}
		});

		this.share = new Share();
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		getMenuInflater().inflate(R.menu.share_with, menu);
		return true;
	}

	@Override
	public boolean onOptionsItemSelected(final MenuItem item) {
		switch (item.getItemId()) {
			case R.id.action_add:
				final Intent intent = new Intent(getApplicationContext(), ChooseContactActivity.class);
				startActivityForResult(intent, REQUEST_START_NEW_CONVERSATION);
				return true;
		}
		return super.onOptionsItemSelected(item);
	}

	@Override
	public void onStart() {
		super.onStart();
		Intent intent = getIntent();
		if (intent == null) {
			return;
		}
		final String type = intent.getType();
		final String action = intent.getAction();
		Log.d(Config.LOGTAG, "action: "+action+ ", type:"+type);
		share.uuid = intent.getStringExtra("uuid");
		if (Intent.ACTION_SEND.equals(action)) {
			final String text = intent.getStringExtra(Intent.EXTRA_TEXT);
			final Uri uri = intent.getParcelableExtra(Intent.EXTRA_STREAM);
			if (type != null && uri != null && text == null) {
				this.share.uris.clear();
				this.share.uris.add(uri);
				this.share.image = type.startsWith("image/") || isImage(uri);
			} else {
				this.share.text = text;
			}
		} else if (Intent.ACTION_SEND_MULTIPLE.equals(action)) {
			this.share.image = type != null && type.startsWith("image/");
			if (!this.share.image) {
				return;
			}
			this.share.uris = intent.getParcelableArrayListExtra(Intent.EXTRA_STREAM);
		}
		if (xmppConnectionServiceBound) {
			if (share.uuid != null) {
				share();
			} else {
				xmppConnectionService.populateWithOrderedConversations(mConversations, this.share.uris.size() == 0);
			}
		}

	}

	protected boolean isImage(Uri uri) {
		try {
			String guess = URLConnection.guessContentTypeFromName(uri.toString());
			return (guess != null && guess.startsWith("image/"));
		} catch (final StringIndexOutOfBoundsException ignored) {
			return false;
		}
	}

	@Override
	void onBackendConnected() {
		if (xmppConnectionServiceBound && share != null
				&& ((share.contact != null && share.account != null) || share.uuid != null)) {
			share();
			return;
		}
		refreshUiReal();
	}

	private void share() {
		final Conversation conversation;
		if (share.uuid != null) {
			conversation = xmppConnectionService.findConversationByUuid(share.uuid);
			if (conversation == null) {
				return;
			}
		}else{
			Account account;
			try {
				account = xmppConnectionService.findAccountByJid(Jid.fromString(share.account));
			} catch (final InvalidJidException e) {
				account = null;
			}
			if (account == null) {
				return;
			}

			try {
				conversation = xmppConnectionService
						.findOrCreateConversation(account, Jid.fromString(share.contact), false);
			} catch (final InvalidJidException e) {
				return;
			}
		}
		share(conversation);
	}

	private void share(final Conversation conversation) {
		mListView.setEnabled(false);
		if (conversation.getNextEncryption() == Message.ENCRYPTION_PGP && !hasPgp()) {
			if (share.uuid == null) {
				showInstallPgpDialog();
			} else {
				Toast.makeText(this,R.string.openkeychain_not_installed,Toast.LENGTH_SHORT).show();
				finish();
			}
			return;
		}
		if (share.uris.size() != 0) {
			OnPresenceSelected callback;
			if (this.share.image) {
				// TODO: attachementCounter should be set and decremented correctly
				callback = new OnPresenceSelected() {
					@Override
					public void onPresenceSelected() {
						ResizePictureUserDecisionListener userDecisionListener = new ShareWithResizePictureUserDecisionListener(ShareWithActivity.this, conversation, xmppConnectionService, share.uris);
						UserDecisionDialog userDecisionDialog = new UserDecisionDialog(ShareWithActivity.this, R.string.userdecision_question_resize_picture, userDecisionListener);
						userDecisionDialog.decide(ConversationsPlusPreferences.resizePicture());
					}
				};
			} else {
				attachmentCounter.set(share.uris.size());
				callback = new OnPresenceSelected() {
					@Override
					public void onPresenceSelected() {
						replaceToast(getString(R.string.preparing_file));
						ShareWithActivity.this.xmppConnectionService
								.attachFileToConversation(conversation, share.uris.get(0),
										attachFileCallback);
						switchToConversation(conversation, null, true);
						finish();
					}
				};
			}
			if (conversation.getAccount().httpUploadAvailable()) {
				callback.onPresenceSelected();
			} else {
				selectPresence(conversation, callback);
			}
		} else {
			switchToConversation(conversation, this.share.text, true);
			finish();
		}

	}

	public void refreshUiReal() {
		xmppConnectionService.populateWithOrderedConversations(mConversations, this.share != null && this.share.uris.size() == 0);
		mAdapter.notifyDataSetChanged();
	}

	@Override
	public void onBackPressed() {
		if (attachmentCounter.get() >= 1) {
			replaceToast(getString(R.string.sharing_files_please_wait));
		} else {
			super.onBackPressed();
		}
	}
}