/**
 * Copyright (c) 2013, Redsolution LTD. All rights reserved.
 *
 * This file is part of Xabber project; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License, Version 3.
 *
 * Xabber 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 com.xabber.android.ui;

import java.util.Collection;

import android.content.Context;
import android.content.Intent;
import android.os.Bundle;

import com.xabber.android.data.Application;
import com.xabber.android.data.account.OnAccountChangedListener;
import com.xabber.android.data.entity.BaseEntity;
import com.xabber.android.data.extension.muc.MUCManager;
import com.xabber.android.data.intent.AccountIntentBuilder;
import com.xabber.android.data.intent.EntityIntentBuilder;
import com.xabber.android.data.roster.OnContactChangedListener;
import com.xabber.android.ui.adapter.OccupantListAdapter;
import com.xabber.android.ui.helper.ManagedListActivity;
import com.xabber.androiddev.R;
import com.xabber.xmpp.address.Jid;

/**
 * Represent list of occupants in the room.
 *
 * @author alexander.ivanov
 */
public class OccupantList extends ManagedListActivity implements
        OnAccountChangedListener, OnContactChangedListener {

    private String account;
    private String room;
    private OccupantListAdapter listAdapter;

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

        account = getAccount(getIntent());
        room = Jid.getBareAddress(getUser(getIntent()));
        if (account == null || room == null
                || !MUCManager.getInstance().hasRoom(account, room)) {
            Application.getInstance().onError(R.string.ENTRY_IS_NOT_FOUND);
            finish();
            return;
        }
        setContentView(R.layout.list);
        listAdapter = new OccupantListAdapter(this, account, room);
        setListAdapter(listAdapter);

        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
    }

    @Override
    protected void onResume() {
        super.onResume();
        Application.getInstance().addUIListener(OnAccountChangedListener.class,
                this);
        Application.getInstance().addUIListener(OnContactChangedListener.class,
                this);
        listAdapter.onChange();
    }

    @Override
    protected void onPause() {
        super.onPause();
        Application.getInstance().removeUIListener(
                OnAccountChangedListener.class, this);
        Application.getInstance().removeUIListener(
                OnContactChangedListener.class, this);
    }

    @Override
    public void onContactsChanged(Collection<BaseEntity> entities) {
        if (entities.contains(new BaseEntity(account, room)))
            listAdapter.onChange();
    }

    @Override
    public void onAccountsChanged(Collection<String> accounts) {
        if (accounts.contains(account))
            listAdapter.onChange();
    }

    public static Intent createIntent(Context context, String account,
                                      String user) {
        return new EntityIntentBuilder(context, OccupantList.class)
                .setAccount(account).setUser(user).build();
    }

    private static String getAccount(Intent intent) {
        return AccountIntentBuilder.getAccount(intent);
    }

    private static String getUser(Intent intent) {
        return EntityIntentBuilder.getUser(intent);
    }

}
