opensourcecode/Android/app/src/main/java/com/cygnusa/hyperm/NotificationActivity.java

package com.cygnusa.hyperm;

import android.annotation.SuppressLint;
import android.content.ContentValues;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.PorterDuff;
import android.graphics.RectF;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.RecyclerView;
import androidx.appcompat.widget.Toolbar;
import androidx.recyclerview.widget.ItemTouchHelper;
import android.view.MenuItem;
import android.view.View;
import android.widget.ProgressBar;
import android.widget.Toast;

import com.google.gson.Gson;
import com.google.gson.JsonElement;
import com.google.gson.reflect.TypeToken;
import com.cygnusa.hyperm.adapter.NotificationAdapter;
import com.cygnusa.hyperm.fancyshowcase.DismissListener;
import com.cygnusa.hyperm.fancyshowcase.FancyShowCaseView;
import com.cygnusa.hyperm.fancyshowcase.FocusShape;
import com.cygnusa.hyperm.util.ApiService;
import com.cygnusa.hyperm.util.GlobalData;
import com.cygnusa.hyperm.util.MainApplication;
import com.cygnusa.hyperm.util.MyCallback;
import com.cygnusa.hyperm.util.PositionUpdateListener;
import com.cygnusa.hyperm.util.TransparentProgressDialog;
import com.cygnusa.hyperm.util.UtilService;
import com.cygnusa.hyperm.util.WrapContentLinearLayoutManager;
import com.cygnusa.hyperm.wrappers.AssessmentList;
import com.cygnusa.hyperm.wrappers.ErrorResponse;
import com.cygnusa.hyperm.wrappers.Notification;
import com.cygnusa.hyperm.wrappers.NotificationResponse;
import com.tylersuehr.esr.EmptyStateRecyclerView;
import com.tylersuehr.esr.TextStateDisplay;

import java.util.ArrayList;
import java.util.HashMap;

import jp.wasabeef.recyclerview.animators.SlideInLeftAnimator;
import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;


public class NotificationActivity extends AppCompatActivity implements PositionUpdateListener, DismissListener {
    ApiService restService;
    EmptyStateRecyclerView notificationList;
    TransparentProgressDialog progressDialog;
    int PAGE = 0;
    int LIMIT = 10;
    WrapContentLinearLayoutManager linearLayoutManager;
    int TOTAL_RECORD = 0;
    ProgressBar progressBar;
    ArrayList<Notification> MY_NOTIFICATIONS = new ArrayList<>();
    NotificationAdapter adapter;
    private Paint p = new Paint();
    public static Handler.Callback notificationCallback;
    ArrayList<AssessmentList> ASSESSMENT_LIST = new ArrayList<>();
    ArrayList<AssessmentList> OFFLINE_ASSESSMENT_LIST = new ArrayList<>();

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

        setContentView(R.layout.activity_notification);
        setupWindowAnimations();

        restService = ((MainApplication) getApplication()).getClient();
        GlobalData.openDatabase(NotificationActivity.this);

        Toolbar toolbar = findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
        toolbar.setContentInsetStartWithNavigation(0);
        toolbar.setTitle("");
        getSupportActionBar().setTitle("");
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
        getSupportActionBar().setDisplayShowHomeEnabled(true);
        @SuppressLint("PrivateResource")
        Drawable backArrow = getResources().getDrawable(R.drawable.abc_ic_ab_back_material);
        backArrow.setColorFilter(getResources().getColor(R.color.btn_bg_color), PorterDuff.Mode.SRC_ATOP);
        getSupportActionBar().setHomeAsUpIndicator(backArrow);

        notificationList = findViewById(R.id.notificationList);
        notificationList.setHasFixedSize(true);
        notificationList.setItemAnimator(new SlideInLeftAnimator());
        linearLayoutManager = new WrapContentLinearLayoutManager(getBaseContext());
        notificationList.setLayoutManager(linearLayoutManager);
        notificationList.addOnScrollListener(recyclerViewOnScrollListener);
        progressBar = findViewById(R.id.progressBar);
        notificationList.setStateDisplay(EmptyStateRecyclerView.STATE_EMPTY,
                new TextStateDisplay(this, "No data available", ""));

        notificationList.post(new Runnable() {
            @Override
            public void run() {
                getNotifications(true);
            }
        });

        initSwipe();

        findViewById(R.id.helpIcon).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                showHelpScreen();
            }
        });

        notificationCallback = new Handler.Callback() {
            @Override
            public boolean handleMessage(Message msg) {
                PAGE = 0;
                getNotifications(false);
                return false;
            }
        };
    }

    private void showHelpScreen() {
        try {
            View view;
//            if (adapter != null && adapter.getItemCount() > 0) {
//                view = notificationList.findViewHolderForAdapterPosition(linearLayoutManager.findFirstVisibleItemPosition()).itemView;
//            } else {
//                view = notificationList;
//            }
            new FancyShowCaseView.Builder(this)
                    .focusOn(notificationList)
                    .title("Tap here to view notification")
                    .titleSize(22, 1)
                    .titleGravity(1)
                    .closeOnTouch(true)
                    .fitSystemWindows(false)
                    .dismissListener(this)
                    .focusShape(FocusShape.ROUNDED_RECTANGLE)
                    .backgroundColor(Color.parseColor("#99000000"))
                    .build()
                    .show();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }


    @Override
    public void onDismiss(String id) {
        try {
            View view;
            if (adapter != null && adapter.getItemCount() > 0) {
                view = notificationList.findViewHolderForAdapterPosition(linearLayoutManager.findFirstVisibleItemPosition()).itemView;
            } else {
                view = notificationList;
            }
            new FancyShowCaseView.Builder(this)
                    .focusOn(view)
                    .title("Swipe right to left delete notification")
                    .titleSize(22, 1)
                    .closeOnTouch(true)
                    .fitSystemWindows(false)
                    .focusShape(FocusShape.ROUNDED_RECTANGLE)
                    .backgroundColor(Color.parseColor("#99000000"))
                    .build()
                    .show();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    @Override
    public void onSkipped(String id) {

    }

    private void initSwipe() {
        ItemTouchHelper.SimpleCallback simpleItemTouchCallback = new ItemTouchHelper.SimpleCallback(0, ItemTouchHelper.LEFT) {

            @Override
            public boolean onMove(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, RecyclerView.ViewHolder target) {
                return false;
            }

            @Override
            public void onSwiped(RecyclerView.ViewHolder viewHolder, int direction) {
                int position = viewHolder.getAdapterPosition();
                if (direction == ItemTouchHelper.LEFT) {
                    try {
                        notificationList.setEnabled(false);
                        deleteNotification(position);
                        notificationList.setEnabled(true);
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                }
            }

            @Override
            public void onChildDraw(Canvas c, RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, float dX, float dY, int actionState, boolean isCurrentlyActive) {

                Bitmap icon;
                if (actionState == ItemTouchHelper.ACTION_STATE_SWIPE) {

                    View itemView = viewHolder.itemView;
                    float height = (float) itemView.getBottom() - (float) itemView.getTop();
                    float width = height / 3;

                    if (dX < 0) {
                        p.setColor(Color.RED);
                        RectF background = new RectF((float) itemView.getRight() + dX, (float) itemView.getTop(),
                                (float) itemView.getRight(), (float) itemView.getBottom());
                        c.drawRect(background, p);
                        icon = BitmapFactory.decodeResource(getResources(), R.mipmap.delete_icon);
                        RectF icon_dest = new RectF((float) itemView.getRight() - 2 * width,
                                (float) itemView.getTop() + width, (float) itemView.getRight() - width,
                                (float) itemView.getBottom() - width);
                        c.drawBitmap(icon, null, icon_dest, p);
                    }
                }
                super.onChildDraw(c, recyclerView, viewHolder, dX, dY, actionState, isCurrentlyActive);
            }
        };
        ItemTouchHelper itemTouchHelper = new ItemTouchHelper(simpleItemTouchCallback);
        itemTouchHelper.attachToRecyclerView(notificationList);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        if (item.getItemId() == android.R.id.home) {
            finish();
            this.overridePendingTransition(R.anim.animation_f_enter,
                    R.anim.animation_f_leave);
        }
        return super.onOptionsItemSelected(item);
    }

    @Override
    public void onBackPressed() {
        super.onBackPressed();
        this.overridePendingTransition(R.anim.animation_f_enter,
                R.anim.animation_f_leave);
    }

    private void setupWindowAnimations() {
        this.overridePendingTransition(R.anim.animation_enter,
                R.anim.animation_leave);
    }

    @Override
    protected void onResume() {
        super.onResume();
        if (GlobalData.canLogout) {
            finish();
        }
    }

    private void getNotifications(boolean canLoadProgress) {
        if (new UtilService().isNetworkAvailable(NotificationActivity.this)) {
            if (canLoadProgress) {
                progressDialog = new TransparentProgressDialog(NotificationActivity.this);
                progressDialog.show();
                progressBar.setVisibility(View.GONE);
            } else {
                progressBar.setVisibility(View.VISIBLE);
            }

            restService.getNotifications(PAGE, LIMIT).enqueue(new Callback<NotificationResponse>() {
                @Override
                public void onResponse(Call<NotificationResponse> call, Response<NotificationResponse> response) {

                    if (progressDialog != null && progressDialog.isShowing()) {
                        progressDialog.dismiss();
                    }
                    progressBar.setVisibility(View.GONE);

                    if (response.body() != null && response.body().getStatus() == 200) {
                        TOTAL_RECORD = Integer.parseInt(response.body().getTotal());

                        if (adapter == null) {
                            MY_NOTIFICATIONS = response.body().getData();
                            adapter = new NotificationAdapter(NotificationActivity.this, MY_NOTIFICATIONS,
                                    NotificationActivity.this, restService);
                            notificationList.setAdapter(adapter);
                        } else {

                            MY_NOTIFICATIONS.addAll(response.body().getData());
                            adapter.notifyDataSetChanged();
                        }

                        if (MY_NOTIFICATIONS.size() == 0) {
                            notificationList.invokeState(EmptyStateRecyclerView.STATE_EMPTY);
                        } else {
                            notificationList.invokeState(EmptyStateRecyclerView.STATE_OK);
                        }

                        GlobalData.sdb.delete("notifications", null, null);
                        Gson gson = new Gson();
                        JsonElement jsonElement = gson.toJsonTree(
                                MY_NOTIFICATIONS, new TypeToken<ArrayList<Notification>>() {
                                }.getType());
                        ContentValues values = new ContentValues();
                        values.put("notifications", jsonElement.toString());
                        GlobalData.sdb.insert("notifications", null, values);
                    } else if (response.body() != null && response.body().getStatus() == 401) {
                        GlobalData.canLogout = true;
                        finish();
                    } else if (response.body() != null) {
                        GlobalData.showToast(getBaseContext(), response.body().getMessage(), Toast.LENGTH_SHORT).show();
                    } else if (response.errorBody() != null) {
                        Gson gson = new Gson();
                        ErrorResponse message = gson.fromJson(response.errorBody().charStream(), ErrorResponse.class);
                        GlobalData.showToast(getBaseContext(), message.getMessage(), Toast.LENGTH_SHORT).show();
                        if (message.getStatus() == 401) {
                            GlobalData.canLogout = true;
                            finish();
                        }
                    }

                    new Handler().postDelayed(new Runnable() {
                        @Override
                        public void run() {
                            if (getPreferences(MODE_PRIVATE).getBoolean("NotificationActivity", true)) {
                                showHelpScreen();
                                getPreferences(MODE_PRIVATE).edit().putBoolean("NotificationActivity", false).apply();
                            }
                        }
                    }, 1000);
                }

                @Override
                public void onFailure(Call<NotificationResponse> call, Throwable t) {
                    if (progressDialog != null && progressDialog.isShowing()) {
                        progressDialog.dismiss();
                    }
                    progressBar.setVisibility(View.GONE);
                    GlobalData.showToast(getBaseContext(), "Connection Failure, try again!", Toast.LENGTH_SHORT).show();
                }
            });
        } else {
            if (adapter == null) {
                Cursor cursor = GlobalData.sdb.rawQuery("select * from notifications", null);
                if (cursor.getCount() > 0) {
                    cursor.moveToFirst();
                    Gson gson = new Gson();
                    MY_NOTIFICATIONS = gson.fromJson(
                            cursor.getString(cursor.getColumnIndex("notifications")),
                            new TypeToken<ArrayList<Notification>>() {
                            }.getType());
                    TOTAL_RECORD = MY_NOTIFICATIONS.size();
                    adapter = new NotificationAdapter(NotificationActivity.this, MY_NOTIFICATIONS,
                            NotificationActivity.this, restService);
                    notificationList.setAdapter(adapter);
                } else {
                    GlobalData.showToast(getBaseContext(), "Please check your internet connection", Toast.LENGTH_SHORT).show();
                }
            } else {
                GlobalData.showToast(getBaseContext(), "Please check your internet connection", Toast.LENGTH_SHORT).show();
            }
        }
    }


    private RecyclerView.OnScrollListener recyclerViewOnScrollListener = 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);
            int visibleItemCount = linearLayoutManager.getChildCount();
            int totalItemCount = linearLayoutManager.getItemCount();
            int firstVisibleItemPosition = linearLayoutManager.findFirstVisibleItemPosition();

            if (progressBar.getVisibility() != View.VISIBLE) {
                if ((visibleItemCount + firstVisibleItemPosition) >= totalItemCount
                        && firstVisibleItemPosition >= 0
                        && totalItemCount < TOTAL_RECORD && MY_NOTIFICATIONS.size() < TOTAL_RECORD) {
                    PAGE++;
                    getNotifications(false);
                }
            }
        }
    };

    @Override
    public void onPositionUpdate(int position) {

    }

    private void deleteNotification(int id) {
        Cursor cursor = GlobalData.sdb.rawQuery("select * from notification_deleted", null);
        String ids;
        if (cursor.getCount() > 0) {
            cursor.moveToFirst();
            ids = cursor.getString(cursor.getColumnIndex("notification_deleted"));
            ids = ids + "," + MY_NOTIFICATIONS.get(id).getId().trim();
        } else {
            ids = MY_NOTIFICATIONS.get(id).getId().trim();
        }
        adapter.remove(id);
        if (MY_NOTIFICATIONS.size() == 0) {
            notificationList.invokeState(EmptyStateRecyclerView.STATE_EMPTY);
        }

        GlobalData.sdb.delete("notification_deleted", null, null);
        ContentValues values1 = new ContentValues();
        values1.put("notification_deleted", ids);
        GlobalData.sdb.insert("notification_deleted", null, values1);

        GlobalData.sdb.delete("notifications", null, null);
        Gson gson = new Gson();
        JsonElement jsonElement = gson.toJsonTree(
                MY_NOTIFICATIONS, new TypeToken<ArrayList<Notification>>() {
                }.getType());
        ContentValues values = new ContentValues();
        values.put("notifications", jsonElement.toString());
        GlobalData.sdb.insert("notifications", null, values);

        if (new UtilService().isNetworkAvailable(NotificationActivity.this)) {
            HashMap<String, String> map = new HashMap<>();
            map.put("notificationid", ids);

            restService.updateDeleteNotifications(map)
                    .enqueue(new MyCallback<ErrorResponse>(ids) {
                        @Override
                        public void onResponse(Call<ErrorResponse> call, Response<ErrorResponse> response) {
                            if (response.body() != null && response.body().getStatus() == 200) {
                                GlobalData.sdb.delete("notification_deleted", null, null);
                            }
                            try {
                                new android.os.Handler(HomeActivity.badgeUpdateCallback).sendEmptyMessage(0);
                            } catch (Exception e) {
                                e.printStackTrace();
                            }
                        }

                        @Override
                        public void onFailure(Call<ErrorResponse> call, Throwable t) {
                            GlobalData.showToast(NotificationActivity.this, "Connection Failure, try again!", Toast.LENGTH_SHORT).show();
                        }
                    });
        } else {
            try {
                new android.os.Handler(HomeActivity.badgeUpdateCallback).sendEmptyMessage(0);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }


}