package com.rthoni.stssaguenay.ui.fragments;

import android.content.DialogInterface;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v7.app.AlertDialog;
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.TextView;
import android.widget.Toast;

import com.luticate.utils.business.LuPromise;
import com.rthoni.stssaguenay.R;
import com.rthoni.stssaguenay.business.STSBusiness;
import com.rthoni.stssaguenay.business.SchedulesBusiness;
import com.rthoni.stssaguenay.dbo.UserFavouriteStopsDbo;
import com.rthoni.stssaguenay.dbo.SchedulesDbo;

import org.joda.time.DateTimeZone;
import org.joda.time.LocalDateTime;

import java.util.Collections;
import java.util.List;
import java.util.TimeZone;
import java.util.Vector;

import butterknife.BindView;
import butterknife.ButterKnife;

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

    @BindView(R.id.listFavouritesStops)
    RecyclerView _favouritesStopsList;

    @BindView(R.id.swipeContainer)
    SwipeRefreshLayout _swipeRefreshLayout;

    FavouriteStopsAdapter _adapter;

    public static class ViewHolder extends RecyclerView.ViewHolder {
        public View _parentView;
        public TextView _textView;
        public TextView _textView2;
        public ViewHolder(View v) {
            super(v);
            _parentView = v;
        }
    }

    public class FavouriteStopsAdapter extends RecyclerView.Adapter<ViewHolder> {

        private List<UserFavouriteStopsDbo> _favourites;

        private List<SchedulesDbo> _schedules;

        @Override
        public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
            View v = LayoutInflater.from(parent.getContext())
                    .inflate(R.layout.favourite_stop_recycler_view_item, parent, false);
            ViewHolder vh = new ViewHolder(v);
            vh._textView = (TextView) v.findViewById(R.id.textView);
            vh._textView2 = (TextView) v.findViewById(R.id.textView2);
            return vh;
        }

        @Override
        public void onBindViewHolder(ViewHolder holder, int position) {
            final UserFavouriteStopsDbo favouriteStopDbo = _favourites.get(position);
            holder._textView.setText(favouriteStopDbo.getStop().getFullName());
            holder._parentView.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    onFavouriteClicked(favouriteStopDbo);
                }
            });
            holder._parentView.setOnLongClickListener(new View.OnLongClickListener() {
                @Override
                public boolean onLongClick(View v) {
                    onFavouriteLongClicked(favouriteStopDbo);
                    return true;
                }
            });

            if (_schedules != null) {
                List<LocalDateTime> schedules = new Vector<>();
                for (SchedulesDbo schedule : _schedules) {
                    if (schedule.getStopId().equals(favouriteStopDbo.getStop().getId())) {
                        schedules.addAll(schedule.getSchedules());
                    }
                }

                Collections.sort(schedules);
                schedules.size();

                StringBuilder text = new StringBuilder();

                for (int i = 0; i < Math.min(5, schedules.size()); ++i) {
                    if (i > 0) {
                        text.append(", ");
                    }
                    text.append(schedules.get(i).toString("HH:mm"));
                }

                holder._textView2.setText(text.toString());
            }
            else {
                holder._textView2.setText(R.string.loading_schedules);
            }
        }

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

        public void setFavourites(List<UserFavouriteStopsDbo> favourites) {
            _favourites = favourites;
            _schedules = null;
            notifyDataSetChanged();
        }

        public List<UserFavouriteStopsDbo> getFavourites() {
            return _favourites;
        }

        public List<SchedulesDbo> getSchedules() {
            return _schedules;
        }

        public void setSchedules(List<SchedulesDbo> schedules) {
            _schedules = schedules;
            notifyDataSetChanged();
        }
    }

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

        _adapter = new FavouriteStopsAdapter();
        _favouritesStopsList.setAdapter(_adapter);
        _favouritesStopsList.setLayoutManager(new LinearLayoutManager(getContext()));

        _swipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
            @Override
            public void onRefresh() {
                loadSchedules();
            }
        });

        loadFavourites();

        return v;
    }

    public void loadFavourites()
    {
        List<UserFavouriteStopsDbo> favourites = STSBusiness.getFavouriteStops(getContext());
        _adapter.setFavourites(favourites);
        loadSchedules();
    }

    public void onFavouriteClicked(UserFavouriteStopsDbo favouriteStopDbo)
    {
    }

    public void onFavouriteLongClicked(final UserFavouriteStopsDbo favouriteStopDbo)
    {
        new AlertDialog.Builder(getContext())
                .setIcon(android.R.drawable.ic_dialog_alert)
                .setTitle(R.string.favourite_remove)
                .setMessage(getString(R.string.favourite_remove_confirm, favouriteStopDbo.getStop().getFullName()))
                .setPositiveButton(android.R.string.yes, new DialogInterface.OnClickListener()
                {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {

                        List<UserFavouriteStopsDbo> favouriteStopDbos = _adapter.getFavourites();
                        favouriteStopDbos.remove(favouriteStopDbo);
                        STSBusiness.setFavouriteStops(getContext(), favouriteStopDbos);

                        Toast.makeText(getContext(), getString(R.string.favourite_removed, favouriteStopDbo.getStop().getFullName()), Toast.LENGTH_LONG).show();
                        loadFavourites();
                    }

                })
                .setNegativeButton(android.R.string.no, null)
                .show();
    }

    public void loadSchedules()
    {
        _swipeRefreshLayout.setRefreshing(true);
        _adapter.setSchedules(null);
        DateTimeZone dtz = DateTimeZone.forOffsetMillis(TimeZone.getDefault().getRawOffset() + TimeZone.getDefault().getDSTSavings());
        LocalDateTime date = LocalDateTime.now(dtz).plusMinutes(-30);

        SchedulesBusiness.getMultiple(STSBusiness.getConfig(), _adapter.getFavourites(), date, 10)
                .then(new LuPromise.LuConsumer<List<SchedulesDbo>>() {
                    @Override
                    public void execute(List<SchedulesDbo> data) {
                        _adapter.setSchedules(data);
                        _swipeRefreshLayout.setRefreshing(false);
                    }
                }, new LuPromise.LuConsumer<LuPromise.LuPromiseError>() {
                    @Override
                    public void execute(LuPromise.LuPromiseError data) {
                        Toast.makeText(getContext(), data.getError(), Toast.LENGTH_LONG).show();
                        _swipeRefreshLayout.setRefreshing(false);
                    }
                });
    }
}