/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2012-2014 lacolaco.net
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

package net.lacolaco.smileessence.activity;

import android.app.Activity;
import android.os.Bundle;
import android.support.v4.app.NavUtils;
import android.text.TextUtils;
import android.util.SparseBooleanArray;
import android.view.*;
import android.widget.AbsListView;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.TextView;
import net.lacolaco.smileessence.Application;
import net.lacolaco.smileessence.R;
import net.lacolaco.smileessence.data.ExtractionWord;
import net.lacolaco.smileessence.entity.IdObject;
import net.lacolaco.smileessence.logging.Logger;
import net.lacolaco.smileessence.view.DialogHelper;
import net.lacolaco.smileessence.view.adapter.OrderedCustomListAdapter;
import net.lacolaco.smileessence.view.dialog.EditTextDialogFragment;
import net.lacolaco.smileessence.viewmodel.IViewModel;

public class EditExtractionActivity extends Activity implements AbsListView.MultiChoiceModeListener {

    // ------------------------------ FIELDS ------------------------------

    private OrderedCustomListAdapter<ExtractionWordViewModel> adapter;

    // --------------------- GETTER / SETTER METHODS ---------------------

    private ListView getListView() {
        return (ListView) findViewById(R.id.listview_edit_list);
    }

    // ------------------------ INTERFACE METHODS ------------------------


    // --------------------- Interface Callback ---------------------

    @Override
    public boolean onCreateActionMode(ActionMode mode, Menu menu) {
        menu.clear();
        MenuInflater inflater = mode.getMenuInflater();
        inflater.inflate(R.menu.edit_list, menu);
        return true;
    }

    @Override
    public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
        return false;
    }

    @Override
    public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
        switch (item.getItemId()) {
            case R.id.menu_edit_list_delete: {
                deleteSelectedItems();
            }
        }
        mode.finish();
        return true;
    }

    @Override
    public void onDestroyActionMode(ActionMode mode) {
    }

    // --------------------- Interface MultiChoiceModeListener ---------------------

    @Override
    public void onItemCheckedStateChanged(ActionMode mode, int position, long id, boolean checked) {
    }

    // ------------------------ OVERRIDE METHODS ------------------------

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        setTheme(Application.getInstance().getThemeResId());
        super.onCreate(savedInstanceState);
        setContentView(R.layout.layout_edit_list);

        initializeViews();
        Logger.debug("onCreate");
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        MenuItem add = menu.add(Menu.NONE, R.id.menu_edit_list_add, Menu.NONE, "");
        add.setIcon(android.R.drawable.ic_menu_add);
        add.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
            case R.id.menu_edit_list_add: {
                addNewExtractionWord();
                break;
            }
            case android.R.id.home: {
                NavUtils.navigateUpFromSameTask(this);
                return true;
            }
        }
        return true;
    }

    // -------------------------- OTHER METHODS --------------------------

    public void deleteSelectedItems() {
        SparseBooleanArray checkedItems = getListView().getCheckedItemPositions();
        for (int i = adapter.getCount() - 1; i > -1; i--) {
            if (checkedItems.get(i)) {
                ExtractionWordViewModel vm = adapter.getItem(i);
                vm.getExtractionWord().remove();
                adapter.removeItem(vm);
            }
        }
        adapter.notifyDataSetChanged();
        updateListView();
    }

    private void addNewExtractionWord() {
        EditTextDialogFragment dialogFragment = new EditTextDialogFragment() {
            @Override
            public void onTextInput(String text) {
                if (TextUtils.isEmpty(text.trim())) {
                    return;
                }
                ExtractionWord extractionWord = ExtractionWord.add(text);
                adapter.addItem(new ExtractionWordViewModel(extractionWord));
                adapter.notifyDataSetChanged();
                updateListView();
            }
        };
        dialogFragment.setParams(getString(R.string.dialog_title_add), "");
        DialogHelper.showDialog(this, dialogFragment);
    }

    private void initializeViews() {
        ListView listView = getListView();
        adapter = new OrderedCustomListAdapter<>(this);
        for (ExtractionWord ew : ExtractionWord.cached()) {
            adapter.addItem(new ExtractionWordViewModel(ew));
        }
        adapter.update();
        listView.setAdapter(adapter);
        listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE_MODAL);
        listView.setMultiChoiceModeListener(this);
    }

    private void updateListView() {
        getListView().requestLayout();
    }


    // --------------------- Interface IViewModel ---------------------


    private static class ExtractionWordViewModel implements IViewModel, IdObject {
        private final ExtractionWord ew;

        public ExtractionWordViewModel(ExtractionWord ew) {
            this.ew = ew;
        }

        public ExtractionWord getExtractionWord() {
            return ew;
        }

        @Override
        public View getView(Activity activity, LayoutInflater inflater, View convertedView) {
            if (convertedView == null) {
                convertedView = inflater.inflate(R.layout.list_item_simple_text, null);
            }
            TextView textView = (TextView) convertedView.findViewById(R.id.list_item_textview);
            textView.setText(ew.getPatternString());
            return convertedView;
        }

        @Override
        public long getId() {
            return ew.getPatternString().hashCode();
        }
    }
}