ForumFragment

package com.dss.invitup.vc.occasionPage.forum;
import android.content.Intent;
import android.os.Bundle;
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.FrameLayout;
import android.widget.ImageView;
import com.dss.invitup.MainActivity;
import com.dss.invitup.R;
import com.dss.invitup.adapters.ForumAdapter;
import com.dss.invitup.events.GetDiscussionRoomEntriesFinishedEvent;
import com.dss.invitup.events.MainActivityHideLoadingEvent;
import com.dss.invitup.events.MainActivityShowLoadingEvent;
import com.dss.invitup.models.serverResponses.OccasionDiscussionRoomEntriesResponse;
import com.dss.invitup.singleton.AppController;
import com.dss.invitup.singleton.InterfaceManager;
import com.dss.invitup.singleton.ServerManager;
import com.dss.invitup.singleton.SettingsManager;
import com.dss.invitup.view.RobotoRegularTextView;
import de.greenrobot.event.EventBus;
import in.srain.cube.views.ptr.PtrClassicFrameLayout;
import in.srain.cube.views.ptr.PtrFrameLayout;
import in.srain.cube.views.ptr.PtrUIHandler;
import in.srain.cube.views.ptr.indicator.PtrIndicator;
import io.realm.Realm;
/**
 * Copyright © 2016 Dihardja Software Solutions. All rights reserved.
 */
public class ForumFragment extends Fragment{
    PtrClassicFrameLayout ptrClassicFrameLayout;
    RecyclerView recyclerView;
    ImageView addNewForumButtonImageView;
    ForumAdapter forumAdapter;
    OccasionDiscussionRoomEntriesResponse occasionDiscussionRoomEntriesResponse;
    LinearLayoutManager linearLayoutManager;
    FrameLayout rootFrameLayout;
    String currentOccasionId = "";
    Realm realm;
    RobotoRegularTextView emptyTextView;
    boolean isHasLocalData = false;
    MainActivity mainActivity;
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragment_forum, container, false);
        if(!EventBus.getDefault().isRegistered(this)){
            EventBus.getDefault().register(this);
        }
        ptrClassicFrameLayout = (PtrClassicFrameLayout) view.findViewById(R.id.fragment_forum_ptrClassicFrameLayout);
        addNewForumButtonImageView = (ImageView) view.findViewById(R.id.fragment_forum_addNewForumButton);
        recyclerView = (RecyclerView) view.findViewById(R.id.fragment_forum_recyclerView);
        rootFrameLayout = (FrameLayout)view.findViewById(R.id.fragment_forum_rootFrameLayout);
        emptyTextView = (RobotoRegularTextView) view.findViewById(R.id.fragment_forum_emptyTextView);
        realm = AppController.getInstance().getRealm();
        forumAdapter = new ForumAdapter(getActivity());
        linearLayoutManager = new LinearLayoutManager(getActivity());
        mainActivity = (MainActivity) getActivity();
        return view;
    }
    @Override
    public void onViewCreated(View view, Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
        mainActivity.position = 3;
        recyclerView.setAdapter(forumAdapter);
        recyclerView.setHasFixedSize(true);
        linearLayoutManager.setOrientation(LinearLayoutManager.VERTICAL);
        recyclerView.setLayoutManager(linearLayoutManager);
        if(SettingsManager.getInstance().getCurrentUserRole()== SettingsManager.UserRole.INVITED){
            addNewForumButtonImageView.setVisibility(View.GONE);
        }else{
            addNewForumButtonImageView.setVisibility(View.VISIBLE);
        }
        recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
            @Override
            public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
                super.onScrollStateChanged(recyclerView, newState);
            }
            @Override
            public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
                super.onScrolled(recyclerView, dx, dy);
                ptrClassicFrameLayout.setEnabled(false);
                if(linearLayoutManager.findFirstVisibleItemPosition()==0) {
                    View v = linearLayoutManager.getChildAt(linearLayoutManager.findFirstVisibleItemPosition());
                    int offsetTop = v.getTop();
                    if (offsetTop == 0) {
                        ptrClassicFrameLayout.setEnabled(true);
                    }
                }
            }
        });
        ptrClassicFrameLayout.addPtrUIHandler(new PtrUIHandler() {
            @Override
            public void onUIReset(PtrFrameLayout frame) {
            }
            @Override
            public void onUIRefreshPrepare(PtrFrameLayout frame) {
            }
            @Override
            public void onUIRefreshBegin(PtrFrameLayout frame) {
                forumAdapter.clearAdapter();
                EventBus.getDefault().post(new MainActivityShowLoadingEvent());
                ServerManager.getInstance().getAllOccasionDiscussionRoom(currentOccasionId);
            }
            @Override
            public void onUIRefreshComplete(PtrFrameLayout frame) {
            }
            @Override
            public void onUIPositionChange(PtrFrameLayout frame, boolean isUnderTouch, byte status, PtrIndicator ptrIndicator) {
            }
        });
        addNewForumButtonImageView.setOnClickListener(addNewForumListener);
    }
    @Override
    public void onResume() {
        super.onResume();
        if(mainActivity.isFromPushNotif){
            currentOccasionId = mainActivity.currentOccasionId;
        }else{
            if(SettingsManager.getInstance().getCurrentOccasion()!=null){
                currentOccasionId = SettingsManager.getInstance().getCurrentOccasion().getId();
            }
        }
        reloadLocalData();
    }
    @Override
    public void onDestroy(){
        super.onDestroy();
        if(EventBus.getDefault().isRegistered(this)) {
            EventBus.getDefault().unregister(this);
        }
    }
    ImageView.OnClickListener addNewForumListener = new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Intent i = new Intent(getActivity(),AddNewForumActivity.class);
            getActivity().startActivity(i);
        }
    };
    public void reloadLocalData(){
        occasionDiscussionRoomEntriesResponse = realm.where(OccasionDiscussionRoomEntriesResponse.class)
                .equalTo("id",currentOccasionId).findFirst();
        if(occasionDiscussionRoomEntriesResponse!=null){
            if(occasionDiscussionRoomEntriesResponse.getOccasionDiscussionRoomEntry().size()!=0){
                isHasLocalData = true;
                emptyTextView.setVisibility(View.GONE);
                forumAdapter.updateAdapter(occasionDiscussionRoomEntriesResponse.getOccasionDiscussionRoomEntry());
            }else{
                isHasLocalData = false;
                emptyTextView.setVisibility(View.VISIBLE);
            }
        }else{
            isHasLocalData = false;
            emptyTextView.setVisibility(View.VISIBLE);
        }
        EventBus.getDefault().post(new MainActivityShowLoadingEvent());
        ServerManager.getInstance().getAllOccasionDiscussionRoom(currentOccasionId);
    }
    public void onEvent(GetDiscussionRoomEntriesFinishedEvent event) {
        EventBus.getDefault().post(new MainActivityHideLoadingEvent());
        ptrClassicFrameLayout.refreshComplete();
        if(event.occasionDiscussionRoomEntriesResponse!=null){
            occasionDiscussionRoomEntriesResponse = event.occasionDiscussionRoomEntriesResponse;
            if (occasionDiscussionRoomEntriesResponse.getOccasionDiscussionRoomEntry().size()!=0){
                emptyTextView.setVisibility(View.GONE);
                forumAdapter.updateAdapter(occasionDiscussionRoomEntriesResponse.getOccasionDiscussionRoomEntry());
            }else{
                if(!isHasLocalData){
                    emptyTextView.setVisibility(View.VISIBLE);
                }
            }
        }else{
            if(!isHasLocalData){
                emptyTextView.setVisibility(View.VISIBLE);
            }
            InterfaceManager.sharedInstance().showErrorMessage(getActivity(), event.errorMessage);
        }
    }
}