import android.content.Context;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.support.v4.app.FragmentManager;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.view.Window;
import android.widget.Button;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.Spinner;
import android.widget.ToggleButton;

import com.X.MyApp;
import com.X.R;
import com.X.adapter.FilterAdapter;
import com.X.adapter.FilterSubtypesAdapter;
import com.X.fragments.content.menus.SimpleDividerItemDecorator;
import com.X.interfaces.I_FilterEventListener;
import com.X.itemwrappers.FilterTypeActive;
import com.X.itemwrappers.FilterTypeActive.Subtype_type;
import com.X.itemwrappers.enums.configs.E_FilterDates;
import com.X.itemwrappers.enums.configs.E_FilterDistance;

import java.util.ArrayList;

public class FilterDialog extends DialogFragment implements OnClickListener, OnCheckedChangeListener {
	private static final int TOTAL_CELLS_PER_ROW = 2;

	private static final String KEY_FILTERACTIVE = "filterActive";
	private static final String KEY_FILTER_DATA = "data";
	private static final String KEY_FILTER_DATE = "date";
	private static final String KEY_FILTER_DISTANCE = "distance";

	protected MyApp myApp;
	protected Context context;
	//views
	protected ToggleButton v_filterActive;
	protected View v_filterContent;
	protected Spinner v_dates;
	protected Spinner v_distances;
	protected RecyclerView v_subtypes;
	protected FilterSubtypesAdapter adapterSubtype;

	//buttons
	protected Button b_accept;
	//data
	protected ArrayList<FilterTypeActive> data;

	public FilterDialog init(Context context) {
		this.context = context;
		return this;
	}

	public void show(FragmentManager manager, String tag) {
		super.show(manager, tag);
	}

	@Override
	public void onSaveInstanceState(Bundle outState) {
		outState.putBoolean(KEY_FILTERACTIVE, v_filterActive.isChecked());
		outState.putInt(KEY_FILTER_DATE, v_dates.getSelectedItemPosition());
		outState.putInt(KEY_FILTER_DISTANCE, v_distances.getSelectedItemPosition());
		outState.putParcelableArrayList(KEY_FILTER_DATA, data);
	}

	@Override
	public View onCreateView(LayoutInflater inflater, ViewGroup view, Bundle savedInstanceState) {
		super.onCreateView(inflater, view, savedInstanceState);
		getDialog().setCanceledOnTouchOutside(true);
		getDialog().getWindow().requestFeature(Window.FEATURE_NO_TITLE);
		//getDialog().setTitle(R.string.filter_title);

		return inflater.inflate(R.layout.content_filter, view, false);
	}

    @Override
    public void onViewCreated(View view, Bundle savedInstanceState) {
    	super.onViewCreated(view, savedInstanceState);

    	if (this.getActivity()!=null) {
    		myApp = (MyApp)this.getActivity().getApplicationContext();
    	} else {
    		myApp = (MyApp)context.getApplicationContext();
    	}
    	//views
    	v_filterActive = (ToggleButton)view.findViewById(R.id.filter_active);
    	v_filterActive.setOnCheckedChangeListener(this);
    	v_filterContent = view.findViewById(R.id.filter_content); v_filterContent.bringToFront();
    	v_dates = (Spinner)view.findViewById(R.id.filter_date);
    	v_distances = (Spinner)view.findViewById(R.id.filter_distance);
    	v_subtypes = (RecyclerView)view.findViewById(R.id.filter_subtypes);

    	//butons
    	b_accept = (Button)view.findViewById(R.id.filter_accept);
    	b_accept.setOnClickListener(this);

		fillView(savedInstanceState);
    }

	private void fillView(Bundle savedInstanceState) {
		boolean filterActive;
    	int datePos, distancePos;
		if (savedInstanceState!=null && savedInstanceState.containsKey(KEY_FILTER_DATA)) {
			filterActive = savedInstanceState.getBoolean(KEY_FILTERACTIVE);
    		data = savedInstanceState.getParcelableArrayList(KEY_FILTER_DATA);
    		datePos = savedInstanceState.getInt(KEY_FILTER_DATE);
    		distancePos = savedInstanceState.getInt(KEY_FILTER_DISTANCE);
    	} else {
    		filterActive = myApp.getFilterActive();
    		data = myApp.getDB().getListTypeAndSubtypesSort();
    		datePos = E_FilterDates.valueOf(myApp.getFilterDate()).ordinal();
    		distancePos = E_FilterDistance.valueOf(myApp.getFilterDistance()).ordinal();
    	}
    	v_filterActive.setChecked(filterActive);
    	v_filterContent.setVisibility(v_filterActive.isChecked()?View.GONE:View.VISIBLE);
		//dates
		v_dates.setAdapter( new FilterAdapter<E_FilterDates>(this.getActivity(), E_FilterDates.values()) );
		v_dates.setSelection(datePos);

		//distance
		v_distances.setAdapter(new FilterAdapter<E_FilterDistance>(this.getActivity(), E_FilterDistance.values()) );
		v_distances.setSelection(distancePos);

		//divider
		v_subtypes.addItemDecoration( new SimpleDividerItemDecorator(this.getActivity())  );
		//if(adapterSubtype==null) {
			adapterSubtype = new FilterSubtypesAdapter(this.getActivity(), data);
			v_subtypes.setAdapter(adapterSubtype);
		/*} else {
			//adapterSubtype.notifyDataSetChanged();
		}*/

		//types - subtypes
		final GridLayoutManager mng_layout = new GridLayoutManager(this.getActivity(), TOTAL_CELLS_PER_ROW);
		mng_layout.setSpanSizeLookup( new GridLayoutManager.SpanSizeLookup() {
            @Override
            public int getSpanSize(int position) {
            	switch( adapterSubtype.getItemViewType(position) ) {
                    case FilterSubtypesAdapter.TYPE_HEADER:
                        return TOTAL_CELLS_PER_ROW;
                    case FilterSubtypesAdapter.TYPE_ROW:
                        return 1;
                    default:
                        return -1;
                }
            }
        });
		v_subtypes.setLayoutManager(mng_layout);
	}

    //APPLY
	@Override
	public void onClick(View v) {
		if (v.getId()==R.id.filter_accept) {
			final E_FilterDates filterDate = (E_FilterDates)v_dates.getSelectedItem();
			final E_FilterDistance filterDistance = (E_FilterDistance)v_distances.getSelectedItem();

			//save only childs
			final ArrayList<FilterTypeActive> childsData = filterData(data);

			//save on filter
			myApp.saveFilter( v_filterActive.isChecked(), filterDate, filterDistance, childsData);

			//apply filter
			final I_FilterEventListener filterListener = (I_FilterEventListener)this.getActivity();
			if (filterListener!=null) {
				filterListener.filterListener(v_filterActive.isChecked(), filterDate, filterDistance, childsData);
			} else {
				Log.e("Filter","Filter is not going to apply, because not listener passed");
			}
			dismiss();
		}
	}

	private ArrayList<FilterTypeActive> filterData(ArrayList<FilterTypeActive> data) {
		final ArrayList<FilterTypeActive> cleanData = new ArrayList<FilterTypeActive>();
		for(FilterTypeActive element : data) {
			if (element!=null && element.getType()==Subtype_type.ROW ) {
				cleanData.add(element);
			}
		}
		return cleanData;
	}


	@Override
	public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
		//if (buttonView.isPressed()) {
			//Enable/Disable filterContent
			v_filterContent.setVisibility(isChecked?View.GONE:View.VISIBLE);
			//Toast.makeText(context, R.string.filter_disabled, Toast.LENGTH_SHORT).show();
		//}
	}

}