samuelchassot/SDP-SwissTeam

package ch.epfl.swissteam.services.view.fragments;

import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v4.app.Fragment;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.Toolbar;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.EditText;

import java.util.ArrayList;

import ch.epfl.swissteam.services.R;
import ch.epfl.swissteam.services.models.ChatRelation;
import ch.epfl.swissteam.services.models.User;
import ch.epfl.swissteam.services.providers.DBUtility;
import ch.epfl.swissteam.services.providers.GoogleSignInSingleton;
import ch.epfl.swissteam.services.view.builders.ChatRelationAdapter;

/**
 * Fragment to display.
 *
 * @author Sébastien Gachoud
 */
public class OnlineChatFragment extends Fragment {

    private ChatRelationAdapter adapter_;
    private View fragmentView_;

    public OnlineChatFragment() {
        // Required empty public constructor
    }

    /**
     * Use this factory method to create a new instance of
     * this fragment using the provided parameters.
     *
     * @return A new instance of fragment OnlineChatFragment.
     */
    public static OnlineChatFragment newInstance() {
        return new OnlineChatFragment();
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
    }

    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {

        // Toolbar
        Toolbar toolbar = getActivity().findViewById(R.id.toolbar);
        toolbar.setTitle(R.string.toolbar_chats);

        // Inflate the layout for this fragment
        fragmentView_ = inflater.inflate(R.layout.fragment_online_chat, container, false);
        refresh();

        EditText searchBar = fragmentView_.findViewById(R.id.online_chat_fragment_search_bar);
        searchBar.addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {}

            @Override
            public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {}

            @Override
            public void afterTextChanged(Editable editable) {
                adapter_.setFilterName(searchBar.getText().toString());
            }
        });

        return fragmentView_;
    }

    @Override
    public void onResume() {
        super.onResume();
        refresh();
    }

    private void refresh(){
        DBUtility.get().getUser(GoogleSignInSingleton.get().getClientUniqueID(), user -> {
            if (user != null) {
                displayChats(fragmentView_, user);
            }
        });
    }

    private void displayChats(View view, User user) {

        ArrayList<ChatRelation> relations = user.getChatRelations_();
        RecyclerView mRecyclerView_ = view.findViewById(R.id.fragment_online_chats_recycler_view);

        if (mRecyclerView_ != null) {
            mRecyclerView_.setLayoutManager(new LinearLayoutManager(this.getContext()));

            adapter_ = new ChatRelationAdapter(relations, GoogleSignInSingleton.get().getClientUniqueID());
            mRecyclerView_.setAdapter(adapter_);
        }
    }
}