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/*
* Copyright © 2019 WireGuard LLC. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0
*/
package com.wireguard.android.util;
import android.content.ContentResolver;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.net.Uri;
import android.os.Build;
import android.os.Environment;
import android.provider.MediaStore;
import android.provider.MediaStore.MediaColumns;
import com.wireguard.android.R;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
public class DownloadsFileSaver {
public static class DownloadsFile {
private Context context;
private OutputStream outputStream;
private String fileName;
private Uri uri;
private DownloadsFile(final Context context, final OutputStream outputStream, final String fileName, final Uri uri) {
this.context = context;
this.outputStream = outputStream;
this.fileName = fileName;
this.uri = uri;
}
public OutputStream getOutputStream() { return outputStream; }
public String getFileName() { return fileName; }
public void delete() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q)
context.getContentResolver().delete(uri, null, null);
else
new File(fileName).delete();
}
}
public static DownloadsFile save(final Context context, final String name, final String mimeType, final boolean overwriteExisting) throws Exception {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
final ContentResolver contentResolver = context.getContentResolver();
if (overwriteExisting)
contentResolver.delete(MediaStore.Downloads.EXTERNAL_CONTENT_URI, String.format("%s = ?", MediaColumns.DISPLAY_NAME), new String[]{name});
final ContentValues contentValues = new ContentValues();
contentValues.put(MediaColumns.DISPLAY_NAME, name);
contentValues.put(MediaColumns.MIME_TYPE, mimeType);
final Uri contentUri = contentResolver.insert(MediaStore.Downloads.EXTERNAL_CONTENT_URI, contentValues);
if (contentUri == null)
throw new IOException(context.getString(R.string.create_downloads_file_error));
final OutputStream contentStream = contentResolver.openOutputStream(contentUri);
if (contentStream == null)
throw new IOException(context.getString(R.string.create_downloads_file_error));
Cursor cursor = contentResolver.query(contentUri, new String[]{MediaColumns.DATA}, null, null, null);
String path = null;
if (cursor != null) {
try {
if (cursor.moveToFirst())
path = cursor.getString(0);
} finally {
cursor.close();
}
}
if (path == null) {
path = "Download/";
cursor = contentResolver.query(contentUri, new String[]{MediaColumns.DISPLAY_NAME}, null, null, null);
if (cursor != null) {
try {
if (cursor.moveToFirst())
path += cursor.getString(0);
} finally {
cursor.close();
}
}
}
return new DownloadsFile(context, contentStream, path, contentUri);
} else {
final File path = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
final File file = new File(path, name);
if (!path.isDirectory() && !path.mkdirs())
throw new IOException(context.getString(R.string.create_output_dir_error));
return new DownloadsFile(context, new FileOutputStream(file), file.getAbsolutePath(), null);
}
}
}
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