// Copyright 2010-2016, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

package org.mozc.android.inputmethod.japanese.userdictionary;

import org.mozc.android.inputmethod.japanese.MozcLog;

import android.content.ContentProvider;
import android.content.ContentValues;
import android.database.Cursor;
import android.net.Uri;
import android.os.ParcelFileDescriptor;

import java.io.File;
import java.io.FileNotFoundException;

import javax.annotation.Nullable;

/**
 * Content provider class to export a user dictionary.
 */
public class UserDictionaryExportProvider extends ContentProvider {

  @Override
  public boolean onCreate() {
    return true;
  }

  @Override
  public ParcelFileDescriptor openFile(Uri uri, String mode) throws FileNotFoundException {
    File inputFile = new File(uri.getPath());
    if (!inputFile.canRead()) {
      MozcLog.e(inputFile.getAbsolutePath() + "doesn't exist.");
      // Failed to export the user dictionary. This exception doesn't cause a crash.
      throw new FileNotFoundException();
    }
    return ParcelFileDescriptor.open(inputFile, ParcelFileDescriptor.MODE_READ_ONLY);
  }

  @Override
  public String getType(Uri uri) {
    return "application/zip";
  }

  @Override
  @Nullable
  public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs,
                      String sortOrder) {
    return null;
  }

  @Override
  public int delete(Uri uri, String selection, String[] selectionArgs) {
    return 0;
  }

  @Override
  @Nullable
  public Uri insert(Uri uri, ContentValues values) {
    return null;
  }

  @Override
  public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) {
    return 0;
  }
}
