MultiRedditListingActivity.java

package ml.docilealligator.infinityforreddit.Activity;

import android.content.SharedPreferences;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.os.Build;
import android.os.Bundle;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.view.WindowManager;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;

import androidx.annotation.NonNull;
import androidx.appcompat.widget.Toolbar;
import androidx.lifecycle.ViewModelProvider;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;

import com.bumptech.glide.Glide;
import com.bumptech.glide.RequestManager;
import com.google.android.material.appbar.AppBarLayout;

import java.util.ArrayList;

import javax.inject.Inject;
import javax.inject.Named;

import butterknife.BindView;
import butterknife.ButterKnife;
import ml.docilealligator.infinityforreddit.Adapter.MultiRedditListingRecyclerViewAdapter;
import ml.docilealligator.infinityforreddit.AppBarStateChangeListener;
import ml.docilealligator.infinityforreddit.AsyncTask.GetCurrentAccountAsyncTask;
import ml.docilealligator.infinityforreddit.AsyncTask.InsertMultiRedditAsyncTask;
import ml.docilealligator.infinityforreddit.Infinity;
import ml.docilealligator.infinityforreddit.MultiReddit.GetMultiReddit;
import ml.docilealligator.infinityforreddit.MultiReddit.MultiReddit;
import ml.docilealligator.infinityforreddit.MultiReddit.MultiRedditViewModel;
import ml.docilealligator.infinityforreddit.R;
import ml.docilealligator.infinityforreddit.RedditDataRoomDatabase;
import ml.docilealligator.infinityforreddit.Utils.SharedPreferencesUtils;
import retrofit2.Retrofit;

public class MultiRedditListingActivity extends BaseActivity {

    private static final String INSERT_MULTI_REDDIT_STATE = "ISSS";
    private static final String NULL_ACCESS_TOKEN_STATE = "NATS";
    private static final String ACCESS_TOKEN_STATE = "ATS";
    private static final String ACCOUNT_NAME_STATE = "ANS";

    @BindView(R.id.appbar_layout_multi_reddit_listing_activity)
    AppBarLayout mAppBarLayout;
    @BindView(R.id.toolbar_multi_reddit_listing_activity)
    Toolbar mToolbar;
    @BindView(R.id.recycler_view_multi_reddit_listing_activity)
    RecyclerView mRecyclerView;
    @BindView(R.id.fetch_multi_reddit_listing_info_linear_layout_multi_reddit_listing_activity)
    LinearLayout mErrorLinearLayout;
    @BindView(R.id.fetch_multi_reddit_listing_info_image_view_multi_reddit_listing_activity)
    ImageView mErrorImageView;
    @BindView(R.id.fetch_multi_reddit_listing_info_text_view_multi_reddit_listing_activity)
    TextView mErrorTextView;
    @Inject
    RedditDataRoomDatabase mRedditDataRoomDatabase;
    @Inject
    SharedPreferences mSharedPreferences;
    @Inject
    @Named("oauth")
    Retrofit mOauthRetrofit;

    MultiRedditViewModel mMultiRedditViewModel;
    private RequestManager mGlide;

    private boolean mNullAccessToken = false;
    private String mAccessToken;
    private String mAccountName;
    private boolean mInsertSuccess = false;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        ((Infinity) getApplication()).getAppComponent().inject(this);
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_multi_reddit_listing);

        ButterKnife.bind(this);

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O_MR1) {
            Resources resources = getResources();

            if ((resources.getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT || resources.getBoolean(R.bool.isTablet))
                    && mSharedPreferences.getBoolean(SharedPreferencesUtils.IMMERSIVE_INTERFACE_KEY, true)) {
                Window window = getWindow();
                window.setFlags(WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS, WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS);

                boolean lightNavBar = false;
                if ((resources.getConfiguration().uiMode & Configuration.UI_MODE_NIGHT_MASK) != Configuration.UI_MODE_NIGHT_YES) {
                    lightNavBar = true;
                }
                boolean finalLightNavBar = lightNavBar;

                View decorView = window.getDecorView();
                if (finalLightNavBar) {
                    decorView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LIGHT_NAVIGATION_BAR);
                }
                mAppBarLayout.addOnOffsetChangedListener(new AppBarStateChangeListener() {
                    @Override
                    public void onStateChanged(AppBarLayout appBarLayout, AppBarStateChangeListener.State state) {
                        if (state == State.COLLAPSED) {
                            if (finalLightNavBar) {
                                decorView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR | View.SYSTEM_UI_FLAG_LIGHT_NAVIGATION_BAR);
                            }
                        } else if (state == State.EXPANDED) {
                            if (finalLightNavBar) {
                                decorView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LIGHT_NAVIGATION_BAR);
                            }
                        }
                    }
                });

                int statusBarResourceId = getResources().getIdentifier("status_bar_height", "dimen", "android");
                if (statusBarResourceId > 0) {
                    ViewGroup.MarginLayoutParams params = (ViewGroup.MarginLayoutParams) mToolbar.getLayoutParams();
                    params.topMargin = getResources().getDimensionPixelSize(statusBarResourceId);
                    mToolbar.setLayoutParams(params);
                }

                int navBarResourceId = resources.getIdentifier("navigation_bar_height", "dimen", "android");
                if (navBarResourceId > 0) {
                    mRecyclerView.setPadding(0, 0, 0, resources.getDimensionPixelSize(navBarResourceId));
                }
            }
        }

        setSupportActionBar(mToolbar);
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);

        if (savedInstanceState != null) {
            mInsertSuccess = savedInstanceState.getBoolean(INSERT_MULTI_REDDIT_STATE);
            mNullAccessToken = savedInstanceState.getBoolean(NULL_ACCESS_TOKEN_STATE);
            mAccessToken = savedInstanceState.getString(ACCESS_TOKEN_STATE);
            mAccountName = savedInstanceState.getString(ACCOUNT_NAME_STATE);
            if (!mNullAccessToken && mAccessToken == null) {
                getCurrentAccountAndBindView();
            } else {
                bindView();
            }
        } else {
            getCurrentAccountAndBindView();
        }
    }

    private void getCurrentAccountAndBindView() {
        new GetCurrentAccountAsyncTask(mRedditDataRoomDatabase.accountDao(), account -> {
            if (account == null) {
                mNullAccessToken = true;
            } else {
                mAccessToken = account.getAccessToken();
                mAccountName = account.getUsername();
            }
            bindView();
        }).execute();
    }

    private void bindView() {
        loadMultiReddits();

        mGlide = Glide.with(this);

        mRecyclerView.setLayoutManager(new LinearLayoutManager(this));
        MultiRedditListingRecyclerViewAdapter adapter = new MultiRedditListingRecyclerViewAdapter(this,
                mOauthRetrofit, mRedditDataRoomDatabase, mAccessToken);
        mRecyclerView.setAdapter(adapter);

        mMultiRedditViewModel = new ViewModelProvider(this,
                new MultiRedditViewModel.Factory(getApplication(), mRedditDataRoomDatabase, mAccountName))
                .get(MultiRedditViewModel.class);

        mMultiRedditViewModel.getAllMultiReddits().observe(this, subscribedUserData -> {
            if (subscribedUserData == null || subscribedUserData.size() == 0) {
                mRecyclerView.setVisibility(View.GONE);
                mErrorLinearLayout.setVisibility(View.VISIBLE);
                mGlide.load(R.drawable.error_image).into(mErrorImageView);
            } else {
                mErrorLinearLayout.setVisibility(View.GONE);
                mRecyclerView.setVisibility(View.VISIBLE);
                mGlide.clear(mErrorImageView);
            }
            adapter.setMultiReddits(subscribedUserData);
        });

        mMultiRedditViewModel.getAllFavoriteMultiReddits().observe(this, favoriteSubscribedUserData -> {
            if (favoriteSubscribedUserData != null && favoriteSubscribedUserData.size() > 0) {
                mErrorLinearLayout.setVisibility(View.GONE);
                mRecyclerView.setVisibility(View.VISIBLE);
                mGlide.clear(mErrorImageView);
            }
            adapter.setFavoriteMultiReddits(favoriteSubscribedUserData);
        });
    }

    private void loadMultiReddits() {
        GetMultiReddit.getMyMultiReddits(mOauthRetrofit, mAccessToken, new GetMultiReddit.GetMultiRedditListener() {
            @Override
            public void success(ArrayList<MultiReddit> multiReddits) {
                new InsertMultiRedditAsyncTask(mRedditDataRoomDatabase, multiReddits, () -> mInsertSuccess = true).execute();
            }

            @Override
            public void failed() {
                mInsertSuccess = false;
            }
        });
    }

    @Override
    public boolean onOptionsItemSelected(@NonNull MenuItem item) {
        if (item.getItemId() == android.R.id.home) {
            finish();
            return true;
        }

        return false;
    }

    @Override
    protected void onSaveInstanceState(@NonNull Bundle outState) {
        super.onSaveInstanceState(outState);
        outState.putBoolean(INSERT_MULTI_REDDIT_STATE, mInsertSuccess);
        outState.putBoolean(NULL_ACCESS_TOKEN_STATE, mNullAccessToken);
        outState.putString(ACCESS_TOKEN_STATE, mAccessToken);
        outState.putString(ACCOUNT_NAME_STATE, mAccountName);
    }

    @Override
    public SharedPreferences getSharedPreferences() {
        return mSharedPreferences;
    }
}