basbeu/theSofties

package ch.epfl.sweng.favors.main;

import android.databinding.DataBindingUtil;
import android.databinding.Observable;
import android.databinding.ObservableBoolean;
import android.databinding.ObservableField;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.widget.LinearLayoutManager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import com.google.firebase.Timestamp;

import java.util.Collections;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

import ch.epfl.sweng.favors.R;
import ch.epfl.sweng.favors.chat.ChatsList;
import ch.epfl.sweng.favors.database.Favor;
import ch.epfl.sweng.favors.database.FavorRequest;
import ch.epfl.sweng.favors.database.ObservableArrayList;
import ch.epfl.sweng.favors.database.User;
import ch.epfl.sweng.favors.database.fields.DatabaseField;
import ch.epfl.sweng.favors.databinding.HomeBinding;
import ch.epfl.sweng.favors.favors.FavorListAdapter;
import ch.epfl.sweng.favors.favors.FavorsFragment;
import ch.epfl.sweng.favors.location.LocationHandler;
import ch.epfl.sweng.favors.location.SortLocations;

public class Home extends android.support.v4.app.Fragment  {

    private ObservableArrayList<Favor> favorList = new ObservableArrayList<>();
    public ObservableBoolean isUnreadMessages;

    FavorListAdapter listAdapter;
    HomeBinding binding;

    Observable.OnPropertyChangedCallback locationSortingCb = new Observable.OnPropertyChangedCallback() {
        @Override
        public void onPropertyChanged(Observable sender, int propertyId) {
            if(propertyId != ObservableArrayList.ContentChangeType.Update.ordinal()){
                return;
            }
            if(LocationHandler.getHandler().locationPoint.get() != null) Collections.sort((ObservableArrayList) sender, new SortLocations(LocationHandler.getHandler().locationPoint.get()));
            updateList((ObservableArrayList) sender);
        }
    };
    Observable.OnPropertyChangedCallback otherSortingCb = new Observable.OnPropertyChangedCallback() {
        @Override
        public void onPropertyChanged(Observable sender, int propertyId) {
            if(propertyId != ObservableArrayList.ContentChangeType.Update.ordinal()){
                return;
            }
            updateList((ObservableArrayList) sender);
        }
    };


    public ObservableField<String> userName = User.getMain().getObservableObject(User.StringFields.firstName);

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        binding = DataBindingUtil.inflate(inflater, R.layout.home, container,false);
        binding.setElements(this);

        binding.button.setOnClickListener(v ->
                this.getFragmentManager().beginTransaction().replace(R.id.fragment_container, new FavorsFragment()).addToBackStack(null).commit());

        setView();
        binding.switchList.setOnClickListener(v -> {currentMode++;setView();});
        binding.favorsList.setLayoutManager(new LinearLayoutManager(getContext()));

        ChatsList unreadChats = new ChatsList();
        unreadChats.isHomeScreen.set(true);
        isUnreadMessages = unreadChats.isUnreadMessages;
        getFragmentManager().beginTransaction().add(R.id.frag_container, unreadChats).commit();

        return binding.getRoot();
    }

    private void updateList(ObservableArrayList<Favor> list){
        listAdapter = new FavorListAdapter(this.getActivity(), (ObservableArrayList)list);
        binding.favorsList.setAdapter(listAdapter);
        listAdapter.notifyDataSetChanged();
    }

    static String[] modes = {"Discover favors in your area...", "Expiring soon favors..."};
    int currentMode = 0;
    public ObservableField<String> lastFavorsTitle = new ObservableField<>();

    void setView(){
        Map<DatabaseField, Object> querryGreater = new HashMap<>();
        querryGreater.put(Favor.ObjectFields.expirationTimestamp, new Timestamp(new Date()));

        if(currentMode >= modes.length){currentMode=0;}
        switch (currentMode){
            case 0 :
                favorList.changeOnPropertyChangedCallback(locationSortingCb);
                FavorRequest.getList(favorList,null,null,querryGreater, null, null);
                break;
            case 1 :
                favorList.changeOnPropertyChangedCallback(otherSortingCb);
                FavorRequest.getList(favorList,null,null,querryGreater, 5, Favor.ObjectFields.expirationTimestamp);
                break;
            default:

        }
        lastFavorsTitle.set(modes[currentMode]);
    }
}