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path: root/app/src/main/java/ml/docilealligator/infinityforreddit/fragments/ViewImgurImageFragment.java
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package ml.docilealligator.infinityforreddit.fragments;

import android.Manifest;
import android.app.job.JobInfo;
import android.app.job.JobScheduler;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.graphics.Bitmap;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.os.Handler;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Toast;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.core.content.ContextCompat;
import androidx.core.content.FileProvider;
import androidx.fragment.app.Fragment;

import com.bumptech.glide.Glide;
import com.bumptech.glide.RequestManager;
import com.bumptech.glide.load.DataSource;
import com.bumptech.glide.load.engine.GlideException;
import com.bumptech.glide.request.RequestListener;
import com.bumptech.glide.request.target.CustomTarget;
import com.bumptech.glide.request.target.Target;
import com.bumptech.glide.request.transition.Transition;
import com.davemorrissey.labs.subscaleview.ImageSource;

import java.io.File;
import java.util.concurrent.Executor;

import javax.inject.Inject;

import ml.docilealligator.infinityforreddit.BuildConfig;
import ml.docilealligator.infinityforreddit.Infinity;
import ml.docilealligator.infinityforreddit.R;
import ml.docilealligator.infinityforreddit.SetAsWallpaperCallback;
import ml.docilealligator.infinityforreddit.activities.ViewImgurMediaActivity;
import ml.docilealligator.infinityforreddit.asynctasks.SaveBitmapImageToFile;
import ml.docilealligator.infinityforreddit.bottomsheetfragments.SetAsWallpaperBottomSheetFragment;
import ml.docilealligator.infinityforreddit.databinding.FragmentViewImgurImageBinding;
import ml.docilealligator.infinityforreddit.post.ImgurMedia;
import ml.docilealligator.infinityforreddit.services.DownloadMediaService;
import ml.docilealligator.infinityforreddit.utils.Utils;

public class ViewImgurImageFragment extends Fragment {

    public static final String EXTRA_IMGUR_IMAGES = "EII";
    public static final String EXTRA_INDEX = "EI";
    public static final String EXTRA_MEDIA_COUNT = "EMC";
    private static final int PERMISSION_REQUEST_WRITE_EXTERNAL_STORAGE = 0;

    @Inject
    Executor mExecutor;

    private ViewImgurMediaActivity activity;
    private RequestManager glide;
    private ImgurMedia imgurMedia;
    private boolean isDownloading = false;
    private boolean isActionBarHidden = false;
    private FragmentViewImgurImageBinding binding;

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

    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        binding = FragmentViewImgurImageBinding.inflate(inflater, container, false);

        ((Infinity) activity.getApplication()).getAppComponent().inject(this);

        setHasOptionsMenu(true);

        imgurMedia = getArguments().getParcelable(EXTRA_IMGUR_IMAGES);
        glide = Glide.with(activity);
        loadImage();

        binding.imageViewViewImgurImageFragment.setOnClickListener(view -> {
            if (isActionBarHidden) {
                activity.getWindow().getDecorView().setSystemUiVisibility(
                        View.SYSTEM_UI_FLAG_LAYOUT_STABLE
                                | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
                                | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN);
                isActionBarHidden = false;
                if (activity.isUseBottomAppBar()) {
                    binding.bottomNavigationViewImgurImageFragment.setVisibility(View.VISIBLE);
                }
            } else {
                activity.getWindow().getDecorView().setSystemUiVisibility(
                        View.SYSTEM_UI_FLAG_LAYOUT_STABLE
                                | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
                                | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
                                | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
                                | View.SYSTEM_UI_FLAG_FULLSCREEN
                                | View.SYSTEM_UI_FLAG_IMMERSIVE);
                isActionBarHidden = true;
                if (activity.isUseBottomAppBar()) {
                    binding.bottomNavigationViewImgurImageFragment.setVisibility(View.GONE);
                }
            }
        });
        binding.imageViewViewImgurImageFragment.setMinimumDpi(80);
        binding.imageViewViewImgurImageFragment.setDoubleTapZoomDpi(240);
        binding.imageViewViewImgurImageFragment.resetScaleAndCenter();

        binding.loadImageErrorLinearLayoutViewImgurImageFragment.setOnClickListener(view -> {
            binding.progressBarViewImgurImageFragment.setVisibility(View.VISIBLE);
            binding.loadImageErrorLinearLayoutViewImgurImageFragment.setVisibility(View.GONE);
            loadImage();
        });

        if (activity.isUseBottomAppBar()) {
            binding.bottomNavigationViewImgurImageFragment.setVisibility(View.VISIBLE);
            binding.titleTextViewViewImgurImageFragment.setText(getString(R.string.view_imgur_media_activity_image_label,
                    getArguments().getInt(EXTRA_INDEX) + 1, getArguments().getInt(EXTRA_MEDIA_COUNT)));
            binding.downloadImageViewViewImgurImageFragment.setOnClickListener(view -> {
                if (isDownloading) {
                    return;
                }
                isDownloading = true;
                requestPermissionAndDownload();
            });
            binding.shareImageViewViewImgurImageFragment.setOnClickListener(view -> {
                shareImage();
            });
            binding.wallpaperImageViewViewImgurImageFragment.setOnClickListener(view -> {
                setWallpaper();
            });
        }

        return binding.getRoot();
    }

    private void loadImage() {
        glide.asBitmap().load(imgurMedia.getLink()).listener(new RequestListener<Bitmap>() {
            @Override
            public boolean onLoadFailed(@Nullable GlideException e, Object model, Target<Bitmap> target, boolean isFirstResource) {
                binding.progressBarViewImgurImageFragment.setVisibility(View.GONE);
                binding.loadImageErrorLinearLayoutViewImgurImageFragment.setVisibility(View.VISIBLE);
                return false;
            }

            @Override
            public boolean onResourceReady(Bitmap resource, Object model, Target<Bitmap> target, DataSource dataSource, boolean isFirstResource) {
                binding.progressBarViewImgurImageFragment.setVisibility(View.GONE);
                return false;
            }
        }).into(new CustomTarget<Bitmap>() {
            @Override
            public void onResourceReady(@NonNull Bitmap resource, @Nullable Transition<? super Bitmap> transition) {
                binding.imageViewViewImgurImageFragment.setImage(ImageSource.bitmap(resource));
            }

            @Override
            public void onLoadCleared(@Nullable Drawable placeholder) {

            }
        });
    }

    @Override
    public void onCreateOptionsMenu(@NonNull Menu menu, @NonNull MenuInflater inflater) {
        inflater.inflate(R.menu.view_imgur_image_fragment, menu);
        for (int i = 0; i < menu.size(); i++) {
            MenuItem item = menu.getItem(i);
            Utils.setTitleWithCustomFontToMenuItem(activity.typeface, item, null);
        }
        super.onCreateOptionsMenu(menu, inflater);
    }

    @Override
    public boolean onOptionsItemSelected(@NonNull MenuItem item) {
        int itemId = item.getItemId();
        if (itemId == R.id.action_download_view_imgur_image_fragment) {
            if (isDownloading) {
                return false;
            }
            isDownloading = true;
            requestPermissionAndDownload();
            return true;
        } else if (itemId == R.id.action_share_view_imgur_image_fragment) {
            shareImage();
            return true;
        } else if (itemId == R.id.action_set_wallpaper_view_imgur_image_fragment) {
            setWallpaper();
            return true;
        }

        return false;
    }

    private void requestPermissionAndDownload() {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && Build.VERSION.SDK_INT < Build.VERSION_CODES.Q) {
            if (ContextCompat.checkSelfPermission(activity,
                    Manifest.permission.WRITE_EXTERNAL_STORAGE)
                    != PackageManager.PERMISSION_GRANTED) {

                // Permission is not granted
                // No explanation needed; request the permission
                requestPermissions(new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE},
                        PERMISSION_REQUEST_WRITE_EXTERNAL_STORAGE);
            } else {
                // Permission has already been granted
                download();
            }
        } else {
            download();
        }
    }

    private void download() {
        isDownloading = false;

        //TODO: contentEstimatedBytes
        JobInfo jobInfo = DownloadMediaService.constructJobInfo(activity, 5000000, imgurMedia);
        ((JobScheduler) activity.getSystemService(Context.JOB_SCHEDULER_SERVICE)).schedule(jobInfo);

        Toast.makeText(activity, R.string.download_started, Toast.LENGTH_SHORT).show();
    }

    private void shareImage() {
        glide.asBitmap().load(imgurMedia.getLink()).into(new CustomTarget<Bitmap>() {

            @Override
            public void onResourceReady(@NonNull Bitmap resource, @Nullable Transition<? super Bitmap> transition) {
                if (activity.getExternalCacheDir() != null) {
                    Toast.makeText(activity, R.string.save_image_first, Toast.LENGTH_SHORT).show();
                    SaveBitmapImageToFile.SaveBitmapImageToFile(mExecutor, new Handler(), resource, activity.getExternalCacheDir().getPath(),
                            imgurMedia.getFileName(),
                            new SaveBitmapImageToFile.SaveBitmapImageToFileListener() {
                                @Override
                                public void saveSuccess(File imageFile) {
                                    Uri uri = FileProvider.getUriForFile(activity,
                                            BuildConfig.APPLICATION_ID + ".provider", imageFile);
                                    Intent shareIntent = new Intent();
                                    shareIntent.setAction(Intent.ACTION_SEND);
                                    shareIntent.putExtra(Intent.EXTRA_STREAM, uri);
                                    shareIntent.setType("image/*");
                                    shareIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
                                    startActivity(Intent.createChooser(shareIntent, getString(R.string.share)));
                                }

                                @Override
                                public void saveFailed() {
                                    Toast.makeText(activity,
                                            R.string.cannot_save_image, Toast.LENGTH_SHORT).show();
                                }
                            });
                } else {
                    Toast.makeText(activity,
                            R.string.cannot_get_storage, Toast.LENGTH_SHORT).show();
                }
            }

            @Override
            public void onLoadCleared(@Nullable Drawable placeholder) {

            }
        });
    }

    private void setWallpaper() {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
            SetAsWallpaperBottomSheetFragment setAsWallpaperBottomSheetFragment = new SetAsWallpaperBottomSheetFragment();
            Bundle bundle = new Bundle();
            bundle.putInt(SetAsWallpaperBottomSheetFragment.EXTRA_VIEW_PAGER_POSITION, activity.getCurrentPagePosition());
            setAsWallpaperBottomSheetFragment.setArguments(bundle);
            setAsWallpaperBottomSheetFragment.show(activity.getSupportFragmentManager(), setAsWallpaperBottomSheetFragment.getTag());
        } else {
            ((SetAsWallpaperCallback) activity).setToBoth(activity.getCurrentPagePosition());
        }
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        if (requestCode == PERMISSION_REQUEST_WRITE_EXTERNAL_STORAGE && grantResults.length > 0) {
            if (grantResults[0] == PackageManager.PERMISSION_DENIED) {
                Toast.makeText(activity, R.string.no_storage_permission, Toast.LENGTH_SHORT).show();
                isDownloading = false;
            } else if (grantResults[0] == PackageManager.PERMISSION_GRANTED && isDownloading) {
                download();
            }
        }
    }

    @Override
    public void onAttach(@NonNull Context context) {
        super.onAttach(context);
        activity = (ViewImgurMediaActivity) context;
    }

    @Override
    public void onDestroyView() {
        super.onDestroyView();
        glide.clear(binding.imageViewViewImgurImageFragment);
    }
}