package com.web3webview;
import android.Manifest;
import android.app.Activity;
import android.app.DownloadManager;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Build;
import android.os.Environment;
import android.os.Parcelable;
import android.provider.MediaStore;
import androidx.annotation.RequiresApi;
import androidx.core.content.ContextCompat;
import androidx.core.content.FileProvider;
import android.util.Log;
import android.webkit.MimeTypeMap;
import android.webkit.ValueCallback;
import android.webkit.WebChromeClient;
import android.widget.Toast;
import com.facebook.react.bridge.ActivityEventListener;
import com.facebook.react.bridge.Promise;
import com.facebook.react.bridge.ReactApplicationContext;
import com.facebook.react.bridge.ReactContextBaseJavaModule;
import com.facebook.react.bridge.ReactMethod;
import com.facebook.react.module.annotations.ReactModule;
import com.facebook.react.modules.core.PermissionAwareActivity;
import com.facebook.react.modules.core.PermissionListener;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import static android.app.Activity.RESULT_OK;
@ReactModule(name = Web3WebviewModule.MODULE_NAME)
public class Web3WebviewModule extends ReactContextBaseJavaModule implements ActivityEventListener {
public static final String MODULE_NAME = "RNCWebView";
private static final int PICKER = 1;
private static final int PICKER_LEGACY = 3;
private static final int FILE_DOWNLOAD_PERMISSION_REQUEST = 1;
final String DEFAULT_MIME_TYPES = "*/*";
private ValueCallback<Uri> filePathCallbackLegacy;
private ValueCallback<Uri[]> filePathCallback;
private Uri outputFileUri;
private DownloadManager.Request downloadRequest;
private PermissionListener webviewFileDownloaderPermissionListener = new PermissionListener() {
@Override
public boolean onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
switch (requestCode) {
case FILE_DOWNLOAD_PERMISSION_REQUEST: {
// If request is cancelled, the result arrays are empty.
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
if (downloadRequest != null) {
downloadFile();
}
} else {
Toast.makeText(getCurrentActivity().getApplicationContext(), "Cannot download files as permission was denied. Please provide permission to write to storage, in order to download files.", Toast.LENGTH_LONG).show();
}
return true;
}
}
return false;
}
};
public Web3WebviewModule(ReactApplicationContext reactContext) {
super(reactContext);
reactContext.addActivityEventListener(this);
}
@Override
public String getName() {
return MODULE_NAME;
}
@ReactMethod
public void isFileUploadSupported(final Promise promise) {
Boolean result = false;
int current = Build.VERSION.SDK_INT;
if (current >= Build.VERSION_CODES.LOLLIPOP) {
result = true;
}
if (current >= Build.VERSION_CODES.JELLY_BEAN && current <= Build.VERSION_CODES.JELLY_BEAN_MR2) {
result = true;
}
promise.resolve(result);
}
public void onActivityResult(Activity activity, int requestCode, int resultCode, Intent data) {
if (filePathCallback == null && filePathCallbackLegacy == null) {
return;
}
// based off of which button was pressed, we get an activity result and a file
// the camera activity doesn't properly return the filename* (I think?) so we use
// this filename instead
switch (requestCode) {
case PICKER:
if (resultCode != RESULT_OK) {
if (filePathCallback != null) {
filePathCallback.onReceiveValue(null);
}
} else {
Uri result[] = this.getSelectedFiles(data, resultCode);
if (result != null) {
filePathCallback.onReceiveValue(result);
} else {
filePathCallback.onReceiveValue(new Uri[]{outputFileUri});
}
}
break;
case PICKER_LEGACY:
Uri result = resultCode != Activity.RESULT_OK ? null : data == null ? outputFileUri : data.getData();
filePathCallbackLegacy.onReceiveValue(result);
break;
}
filePathCallback = null;
filePathCallbackLegacy = null;
outputFileUri = null;
}
public void onNewIntent(Intent intent) {
}
private Uri[] getSelectedFiles(Intent data, int resultCode) {
if (data == null) {
return null;
}
// we have one file selected
if (data.getData() != null) {
if (resultCode == RESULT_OK && Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
return WebChromeClient.FileChooserParams.parseResult(resultCode, data);
} else {
return null;
}
}
// we have multiple files selected
if (data.getClipData() != null) {
final int numSelectedFiles = data.getClipData().getItemCount();
Uri[] result = new Uri[numSelectedFiles];
for (int i = 0; i < numSelectedFiles; i++) {
result[i] = data.getClipData().getItemAt(i).getUri();
}
return result;
}
return null;
}
public void startPhotoPickerIntent(ValueCallback<Uri> filePathCallback, String acceptType) {
filePathCallbackLegacy = filePathCallback;
Intent fileChooserIntent = getFileChooserIntent(acceptType);
Intent chooserIntent = Intent.createChooser(fileChooserIntent, "");
ArrayList<Parcelable> extraIntents = new ArrayList<>();
if (acceptsImages(acceptType)) {
extraIntents.add(getPhotoIntent());
}
if (acceptsVideo(acceptType)) {
extraIntents.add(getVideoIntent());
}
chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, extraIntents.toArray(new Parcelable[]{}));
if (chooserIntent.resolveActivity(getCurrentActivity().getPackageManager()) != null) {
getCurrentActivity().startActivityForResult(chooserIntent, PICKER_LEGACY);
} else {
Log.w("Web3WevbiewModule", "there is no Activity to handle this Intent");
}
}
@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
public boolean startPhotoPickerIntent(final ValueCallback<Uri[]> callback, final Intent intent, final String[] acceptTypes, final boolean allowMultiple) {
filePathCallback = callback;
ArrayList<Parcelable> extraIntents = new ArrayList<>();
if (acceptsImages(acceptTypes)) {
extraIntents.add(getPhotoIntent());
}
if (acceptsVideo(acceptTypes)) {
extraIntents.add(getVideoIntent());
}
Intent fileSelectionIntent = getFileChooserIntent(acceptTypes, allowMultiple);
Intent chooserIntent = new Intent(Intent.ACTION_CHOOSER);
chooserIntent.putExtra(Intent.EXTRA_INTENT, fileSelectionIntent);
chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, extraIntents.toArray(new Parcelable[]{}));
if (chooserIntent.resolveActivity(getCurrentActivity().getPackageManager()) != null) {
getCurrentActivity().startActivityForResult(chooserIntent, PICKER);
} else {
Log.w("Web3WevbiewModule", "there is no Activity to handle this Intent");
}
return true;
}
public void setDownloadRequest(DownloadManager.Request request) {
this.downloadRequest = request;
}
public void downloadFile() {
DownloadManager dm = (DownloadManager) getCurrentActivity().getBaseContext().getSystemService(Context.DOWNLOAD_SERVICE);
String downloadMessage = "Downloading";
dm.enqueue(this.downloadRequest);
Toast.makeText(getCurrentActivity().getApplicationContext(), downloadMessage, Toast.LENGTH_LONG).show();
}
public boolean grantFileDownloaderPermissions() {
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
return true;
}
boolean result = true;
if (ContextCompat.checkSelfPermission(getCurrentActivity(), Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
result = false;
}
if (!result) {
PermissionAwareActivity activity = getPermissionAwareActivity();
activity.requestPermissions(new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, FILE_DOWNLOAD_PERMISSION_REQUEST, webviewFileDownloaderPermissionListener);
}
return result;
}
private Intent getPhotoIntent() {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
outputFileUri = getOutputUri(MediaStore.ACTION_IMAGE_CAPTURE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, outputFileUri);
return intent;
}
private Intent getVideoIntent() {
Intent intent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE);
// @todo from experience, for Videos we get the data onActivityResult
// so there's no need to store the Uri
Uri outputVideoUri = getOutputUri(MediaStore.ACTION_VIDEO_CAPTURE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, outputVideoUri);
return intent;
}
private Intent getFileChooserIntent(String acceptTypes) {
String _acceptTypes = acceptTypes;
if (acceptTypes.isEmpty()) {
_acceptTypes = DEFAULT_MIME_TYPES;
}
if (acceptTypes.matches("\\.\\w+")) {
_acceptTypes = getMimeTypeFromExtension(acceptTypes.replace(".", ""));
}
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.addCategory(Intent.CATEGORY_OPENABLE);
intent.setType(_acceptTypes);
return intent;
}
private Intent getFileChooserIntent(String[] acceptTypes, boolean allowMultiple) {
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.addCategory(Intent.CATEGORY_OPENABLE);
intent.setType("*/*");
intent.putExtra(Intent.EXTRA_MIME_TYPES, getAcceptedMimeType(acceptTypes));
intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, allowMultiple);
return intent;
}
private Boolean acceptsImages(String types) {
String mimeType = types;
if (types.matches("\\.\\w+")) {
mimeType = getMimeTypeFromExtension(types.replace(".", ""));
}
return mimeType.isEmpty() || mimeType.toLowerCase().contains("image");
}
private Boolean acceptsImages(String[] types) {
String[] mimeTypes = getAcceptedMimeType(types);
return isArrayEmpty(mimeTypes) || arrayContainsString(mimeTypes, "image");
}
private Boolean acceptsVideo(String types) {
String mimeType = types;
if (types.matches("\\.\\w+")) {
mimeType = getMimeTypeFromExtension(types.replace(".", ""));
}
return mimeType.isEmpty() || mimeType.toLowerCase().contains("video");
}
private Boolean acceptsVideo(String[] types) {
String[] mimeTypes = getAcceptedMimeType(types);
return isArrayEmpty(mimeTypes) || arrayContainsString(mimeTypes, "video");
}
private Boolean arrayContainsString(String[] array, String pattern) {
for (String content : array) {
if (content.contains(pattern)) {
return true;
}
}
return false;
}
private String[] getAcceptedMimeType(String[] types) {
if (isArrayEmpty(types)) {
return new String[]{DEFAULT_MIME_TYPES};
}
String[] mimeTypes = new String[types.length];
for (int i = 0; i < types.length; i++) {
String t = types[i];
// convert file extensions to mime types
if (t.matches("\\.\\w+")) {
String mimeType = getMimeTypeFromExtension(t.replace(".", ""));
mimeTypes[i] = mimeType;
} else {
mimeTypes[i] = t;
}
}
return mimeTypes;
}
private String getMimeTypeFromExtension(String extension) {
String type = null;
if (extension != null) {
type = MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension);
}
return type;
}
private Uri getOutputUri(String intentType) {
File capturedFile = null;
try {
capturedFile = getCapturedFile(intentType);
} catch (IOException e) {
Log.e("CREATE FILE", "Error occurred while creating the File", e);
e.printStackTrace();
}
// for versions below 6.0 (23) we use the old File creation & permissions model
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
return Uri.fromFile(capturedFile);
}
// for versions 6.0+ (23) we use the FileProvider to avoid runtime permissions
String packageName = getReactApplicationContext().getPackageName();
return FileProvider.getUriForFile(getReactApplicationContext(), packageName + ".fileprovider", capturedFile);
}
private File getCapturedFile(String intentType) throws IOException {
String prefix = "";
String suffix = "";
String dir = "";
String filename = "";
if (intentType.equals(MediaStore.ACTION_IMAGE_CAPTURE)) {
prefix = "image-";
suffix = ".jpg";
dir = Environment.DIRECTORY_PICTURES;
} else if (intentType.equals(MediaStore.ACTION_VIDEO_CAPTURE)) {
prefix = "video-";
suffix = ".mp4";
dir = Environment.DIRECTORY_MOVIES;
}
filename = prefix + String.valueOf(System.currentTimeMillis()) + suffix;
// for versions below 6.0 (23) we use the old File creation & permissions model
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
// only this Directory works on all tested Android versions
// ctx.getExternalFilesDir(dir) was failing on Android 5.0 (sdk 21)
File storageDir = Environment.getExternalStoragePublicDirectory(dir);
return new File(storageDir, filename);
}
File storageDir = getReactApplicationContext().getExternalFilesDir(null);
return File.createTempFile(filename, suffix, storageDir);
}
private Boolean isArrayEmpty(String[] arr) {
// when our array returned from getAcceptTypes() has no values set from the webview
// i.e. <input type="file" />, without any "accept" attr
// will be an array with one empty string element, afaik
return arr.length == 0 || (arr.length == 1 && arr[0].length() == 0);
}
private PermissionAwareActivity getPermissionAwareActivity() {
Activity activity = getCurrentActivity();
if (activity == null) {
throw new IllegalStateException("Tried to use permissions API while not attached to an Activity.");
} else if (!(activity instanceof PermissionAwareActivity)) {
throw new IllegalStateException("Tried to use permissions API but the host Activity doesn't implement PermissionAwareActivity.");
}
return (PermissionAwareActivity) activity;
}
}
