/*
 * 				Firetweet - Twitter client for Android
 * 
 *  Copyright (C) 2012-2014 Mariotaku Lee <mariotaku.lee@gmail.com>
 * 
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 * 
 *  This program 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 org.getlantern.firetweet.fragment.support;

import android.content.Context;
import android.os.Bundle;
import android.support.v4.app.LoaderManager.LoaderCallbacks;
import android.support.v4.content.Loader;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemLongClickListener;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.TextView;

import org.getlantern.firetweet.loader.support.SavedSearchesLoader;

import java.util.Collections;
import java.util.Comparator;

import twitter4j.ResponseList;
import twitter4j.SavedSearch;

import static org.getlantern.firetweet.util.Utils.openTweetSearch;

public class SavedSearchesListFragment extends BasePullToRefreshListFragment implements
        LoaderCallbacks<ResponseList<SavedSearch>>, OnItemLongClickListener {

    private SavedSearchesAdapter mAdapter;

    private long mAccountId;
    private ListView mListView;
    private static final Comparator<SavedSearch> POSITION_COMPARATOR = new Comparator<SavedSearch>() {

        @Override
        public int compare(final SavedSearch object1, final SavedSearch object2) {
            return object1.getPosition() - object2.getPosition();
        }

    };

    @Override
    public void onActivityCreated(final Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        mAdapter = new SavedSearchesAdapter(getActivity());
        setListAdapter(mAdapter);
        mListView = getListView();
        mListView.setOnItemLongClickListener(this);
        final Bundle args = getArguments();
        mAccountId = args != null ? args.getLong(EXTRA_ACCOUNT_ID, -1) : -1;
        getLoaderManager().initLoader(0, null, this);
        setListShown(false);
    }

    @Override
    public Loader<ResponseList<SavedSearch>> onCreateLoader(final int id, final Bundle args) {
        return new SavedSearchesLoader(getActivity(), mAccountId);
    }

    @Override
    public boolean onItemLongClick(final AdapterView<?> view, final View child, final int position, final long id) {
        final SavedSearch item = mAdapter.findItem(id);
        if (item == null) return false;
        DestroySavedSearchDialogFragment.show(getFragmentManager(), mAccountId, item.getId(), item.getName());
        return true;
    }

    @Override
    public void onListItemClick(final ListView view, final View child, final int position, final long id) {
        final SavedSearch item = mAdapter.findItem(id);
        if (item == null) return;
        openTweetSearch(getActivity(), mAccountId, item.getQuery());
    }

    @Override
    public void onLoaderReset(final Loader<ResponseList<SavedSearch>> loader) {
        mAdapter.setData(null);
    }

    @Override
    public void onLoadFinished(final Loader<ResponseList<SavedSearch>> loader, final ResponseList<SavedSearch> data) {
        if (data != null) {
            Collections.sort(data, POSITION_COMPARATOR);
        }
        mAdapter.setData(data);
        setListShown(true);
        setRefreshing(false);
    }

    @Override
    public void onRefresh() {
        if (isRefreshing()) return;
        getLoaderManager().restartLoader(0, null, this);
    }

    static class SavedSearchesAdapter extends BaseAdapter {

        private ResponseList<SavedSearch> mData;
        private final LayoutInflater mInflater;

        public SavedSearchesAdapter(final Context context) {
            mInflater = LayoutInflater.from(context);
        }

        public SavedSearch findItem(final long id) {
            for (int i = 0, count = getCount(); i < count; i++) {
                if (id != -1 && id == getItemId(i)) return getItem(i);
            }
            return null;
        }

        @Override
        public int getCount() {
            return mData != null ? mData.size() : 0;
        }

        @Override
        public SavedSearch getItem(final int position) {
            return mData != null ? mData.get(position) : null;
        }

        @Override
        public long getItemId(final int position) {
            return mData != null ? mData.get(position).getId() : -1;
        }

        @Override
        public View getView(final int position, final View convertView, final ViewGroup parent) {
            final View view = convertView != null ? convertView : mInflater.inflate(
                    android.R.layout.simple_list_item_1, null);
            final TextView text = (TextView) view.findViewById(android.R.id.text1);
            text.setText(getItem(position).getName());
            return view;
        }

        public void setData(final ResponseList<SavedSearch> data) {
            mData = data;
            notifyDataSetChanged();
        }

    }

}