/**
 * 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 java.util.Collections;
import java.util.HashSet;

import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.Spinner;
import android.widget.Toast;

import com.xabber.android.data.Application;
import com.xabber.android.data.NetworkException;
import com.xabber.android.data.account.AccountManager;
import com.xabber.android.data.intent.EntityIntentBuilder;
import com.xabber.android.data.message.MessageManager;
import com.xabber.android.data.roster.PresenceManager;
import com.xabber.android.data.roster.RosterManager;
import com.xabber.android.ui.adapter.AccountChooseAdapter;
import com.xabber.androiddev.R;

public class ContactAdd extends GroupListActivity implements
        View.OnClickListener, OnItemSelectedListener {

    private static final String SAVED_ACCOUNT = "com.xabber.android.ui.ContactAdd.SAVED_ACCOUNT";
    private static final String SAVED_USER = "com.xabber.android.ui.ContactAdd.SAVED_USER";
    private static final String SAVED_NAME = "com.xabber.android.ui.ContactAdd.SAVED_NAME";

    private String account;
    private String user;

    /**
     * Views
     */
    private Spinner accountView;
    private EditText userView;
    private EditText nameView;

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

        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
    }

    @Override
    protected void onInflate(Bundle savedInstanceState) {
        setContentView(R.layout.contact_add);

        ListView listView = getListView();
        LayoutInflater inflater = (LayoutInflater) getSystemService(LAYOUT_INFLATER_SERVICE);
        View view = inflater.inflate(R.layout.contact_add_header, listView,
                false);
        listView.addHeaderView(view, null, false);

        accountView = (Spinner) view.findViewById(R.id.contact_account);
        accountView.setAdapter(new AccountChooseAdapter(this));
        accountView.setOnItemSelectedListener(this);
        userView = (EditText) view.findViewById(R.id.contact_user);
        nameView = (EditText) view.findViewById(R.id.contact_name);
        ((Button) view.findViewById(R.id.ok)).setOnClickListener(this);

        String name;
        Intent intent = getIntent();
        if (savedInstanceState != null) {
            account = savedInstanceState.getString(SAVED_ACCOUNT);
            user = savedInstanceState.getString(SAVED_USER);
            name = savedInstanceState.getString(SAVED_NAME);
        } else {
            account = getAccount(intent);
            user = getUser(intent);
            if (account == null || user == null)
                name = null;
            else {
                name = RosterManager.getInstance().getName(account, user);
                if (user.equals(name))
                    name = null;
            }
        }
        if (account == null) {
            Collection<String> accounts = AccountManager.getInstance()
                    .getAccounts();
            if (accounts.size() == 1)
                account = accounts.iterator().next();
        }
        if (account != null) {
            for (int position = 0; position < accountView.getCount(); position++)
                if (account.equals(accountView.getItemAtPosition(position))) {
                    accountView.setSelection(position);
                    break;
                }
        }
        if (user != null)
            userView.setText(user);
        if (name != null)
            nameView.setText(name);
    }

    @Override
    protected void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        outState.putString(SAVED_ACCOUNT,
                (String) accountView.getSelectedItem());
        outState.putString(SAVED_USER, userView.getText().toString());
        outState.putString(SAVED_NAME, nameView.getText().toString());
    }

    @Override
    public void onClick(View view) {
        switch (view.getId()) {
            case R.id.ok:
                String user = userView.getText().toString();
                if ("".equals(user)) {
                    Toast.makeText(this, getString(R.string.EMPTY_USER_NAME),
                            Toast.LENGTH_LONG).show();
                    return;
                }
                String account = (String) accountView.getSelectedItem();
                if (account == null) {
                    Toast.makeText(this, getString(R.string.EMPTY_ACCOUNT),
                            Toast.LENGTH_LONG).show();
                    return;
                }
                try {
                    RosterManager.getInstance().createContact(account, user,
                            nameView.getText().toString(), getSelected());
                    PresenceManager.getInstance()
                            .requestSubscription(account, user);
                } catch (NetworkException e) {
                    Application.getInstance().onError(e);
                    finish();
                    return;
                }
                MessageManager.getInstance().openChat(account, user);
                finish();
                break;
            default:
                break;
        }
    }

    @Override
    Collection<String> getInitialGroups() {
        String account = (String) accountView.getSelectedItem();
        if (account == null)
            return Collections.emptyList();
        return RosterManager.getInstance().getGroups(account);
    }

    @Override
    Collection<String> getInitialSelected() {
        return Collections.emptyList();
    }

    @Override
    public void onItemSelected(AdapterView<?> parent, View view, int position,
                               long id) {
        String account = (String) accountView.getSelectedItem();
        if (account == null) {
            onNothingSelected(parent);
        } else {
            HashSet<String> groups = new HashSet<String>(RosterManager
                    .getInstance().getGroups(account));
            groups.addAll(getSelected());
            setGroups(groups, getSelected());
        }
    }

    @Override
    public void onNothingSelected(AdapterView<?> parent) {
        setGroups(getSelected(), getSelected());
    }

    public static Intent createIntent(Context context) {
        return createIntent(context, null);
    }

    public static Intent createIntent(Context context, String account) {
        return createIntent(context, account, null);
    }

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

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

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

}
