package com.rthoni.stssaguenay.ui.fragments;

import android.app.ProgressDialog;
import android.graphics.Color;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

import com.amulyakhare.textdrawable.TextDrawable;
import com.luticate.utils.business.LuPromise;
import com.rthoni.stssaguenay.R;
import com.rthoni.stssaguenay.business.RoutesBusiness;
import com.rthoni.stssaguenay.business.STSBusiness;
import com.rthoni.stssaguenay.dbo.UserFavouriteStopsDbo;
import com.rthoni.stssaguenay.dbo.RoutesDbo;
import com.rthoni.stssaguenay.dbo.StopsDbo;

import java.util.List;
import java.util.Vector;

import butterknife.BindView;
import butterknife.ButterKnife;

/**
 * Created by robin on 9/29/16.
 */
public class StopRoutesPickerFragment extends Fragment {

    @BindView(R.id.textView)
    TextView _textView;

    @BindView(R.id.listRoutes)
    RecyclerView _listRoutes;

    @BindView(R.id.btnSave)
    Button _btnSave;

    private StopsDbo _stopsDbo;

    private RoutesAdapter _routesAdapter;

    private LuPromise.LuConsumer<UserFavouriteStopsDbo> _onRoutesSelected;

    public static class ViewHolder extends RecyclerView.ViewHolder {
        public ImageView _imageView;
        public TextView _textView;
        public View _view;
        public ViewHolder(View v) {
            super(v);
            _view = v;
        }
    }

    public class RoutesAdapter extends RecyclerView.Adapter<ViewHolder> {

        private List<RoutesDbo> _routes;

        private List<RoutesDbo> _selectRoutes;

        @Override
        public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
            View v = LayoutInflater.from(parent.getContext())
                    .inflate(R.layout.route_recycler_view_item, parent, false);
            ViewHolder vh = new ViewHolder(v);
            vh._textView = (TextView) v.findViewById(R.id.textView);
            vh._imageView = (ImageView) v.findViewById(R.id.imageView);
            return vh;
        }

        @Override
        public void onBindViewHolder(ViewHolder holder, int position) {
            final RoutesDbo routeDbo = _routes.get(position);
            TextDrawable drawable = TextDrawable.builder()
                    .beginConfig()
                    .textColor(Color.parseColor("#" + routeDbo.getFgColor()))
                    .endConfig()
                    .buildRound(routeDbo.getId(), Color.parseColor("#" + routeDbo.getBgColor()));
            holder._imageView.setImageDrawable(drawable);
            holder._textView.setText(routeDbo.getName());
            holder._view.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    if (_selectRoutes.contains(routeDbo)) {
                        _selectRoutes.remove(routeDbo);
                        v.setSelected(false);
                    }
                    else {
                        _selectRoutes.add(routeDbo);
                        v.setSelected(true);
                    }
                    _btnSave.setEnabled(_selectRoutes.size() != 0);
                }
            });
        }

        @Override
        public int getItemCount() {
            return _routes == null ? 0 : _routes.size();
        }

        public void setRoutes(List<RoutesDbo> routes) {
            _routes = routes;
            _selectRoutes = new Vector<>();
            notifyDataSetChanged();
        }

        public List<RoutesDbo> getSelectRoutes() {
            return _selectRoutes;
        }
    }

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View v = inflater.inflate(R.layout.fragment_stop_route_picker, container, false);
        ButterKnife.bind(this, v);

        _textView.setText(getResources().getString(R.string.pick_routes, _stopsDbo.getFullName()));

        _routesAdapter = new RoutesAdapter();
        _listRoutes.setAdapter(_routesAdapter);
        _listRoutes.setLayoutManager(new LinearLayoutManager(getContext()));
        _listRoutes.setHasFixedSize(true);

        _btnSave.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                save();
            }
        });

        loadRoutes();

        return v;
    }

    public void setStopsDbo(StopsDbo stopsDbo) {
        _stopsDbo = stopsDbo;
    }

    public void loadRoutes()
    {
        final ProgressDialog progressDialog = new ProgressDialog(getContext());
        progressDialog.setIndeterminate(true);
        progressDialog.setCancelable(false);
        progressDialog.show();
        progressDialog.setTitle(R.string.loading);
        progressDialog.setMessage(getString(R.string.loading_routes));

        RoutesBusiness.getAll(STSBusiness.getConfig(getContext()))
                .then(new LuPromise.LuConsumer<List<RoutesDbo>>() {
                    @Override
                    public void execute(List<RoutesDbo> data) {
                        progressDialog.dismiss();
                        List<RoutesDbo> routes = RoutesBusiness.getRoutesDbos(data, _stopsDbo.getRoutes());
                        _routesAdapter.setRoutes(routes);
                    }
                }, new LuPromise.LuConsumer<LuPromise.LuPromiseError>() {
                    @Override
                    public void execute(LuPromise.LuPromiseError data) {
                        progressDialog.dismiss();
                        _routesAdapter.setRoutes(new Vector<RoutesDbo>());
                        Toast.makeText(getContext(), data.getError(), Toast.LENGTH_LONG).show();
                    }
                });
    }

    public void save()
    {
        if (_onRoutesSelected != null) {
            UserFavouriteStopsDbo favourite = new UserFavouriteStopsDbo();
            favourite.setStop(_stopsDbo);
            favourite.setRoutes(_routesAdapter.getSelectRoutes());
            _onRoutesSelected.execute(favourite);
        }
    }

    public void setOnRoutesSelected(LuPromise.LuConsumer<UserFavouriteStopsDbo> onRoutesSelected) {
        _onRoutesSelected = onRoutesSelected;
    }
}