br.com.anteros.android.persistence.backup.ImportDatabaseTask.java Source code

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Here is the source code for br.com.anteros.android.persistence.backup.ImportDatabaseTask.java

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/*
 * Copyright 2016 Anteros Tecnologia
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package br.com.anteros.android.persistence.backup;

import android.Manifest;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.content.DialogInterface.OnDismissListener;
import android.content.pm.PackageManager;
import android.os.AsyncTask;
import android.support.v4.app.ActivityCompat;
import android.widget.Toast;

import java.io.File;
import java.io.IOException;

import br.com.anteros.android.core.util.AndroidFileUtils;
import br.com.anteros.android.core.util.FileUtil;
import br.com.anteros.persistence.session.SQLSession;

public class ImportDatabaseTask extends AsyncTask<Void, Void, String> {

    public static int TABLES_RECREATED = 876363;

    private final ProgressDialog dialog;
    private final SQLSession session;
    private Activity activity;
    private String databaseName;
    private File importDatabaseFile;

    public ImportDatabaseTask(Activity activity, File importDatabaseFile, String databaseName, SQLSession session) {
        this.importDatabaseFile = importDatabaseFile;
        this.activity = activity;
        this.dialog = new ProgressDialog(this.activity);
        this.dialog.setCancelable(false);
        this.databaseName = databaseName;
        this.session = session;
    }

    @Override
    protected void onPreExecute() {
        dialog.setMessage("Importando banco de dados...");
        dialog.show();
    }

    @Override
    protected String doInBackground(final Void... args) {

        if (ActivityCompat.checkSelfPermission(activity,
                Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED
                || ActivityCompat.checkSelfPermission(activity,
                        Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
            throw new BackupException(
                    "No foi possvel executar a tarefa de importar o banco de dados pois voc no possu permisso para isto. Verifique se solicitou permisso no manifesto ou requisitou a permisso caso esteja usando Android(Marshmallow) 6 ou acima.");
        }

        try {
            session.close();
        } catch (Exception e1) {
            e1.printStackTrace();
        }

        File dbBackupFile = importDatabaseFile;
        if (!dbBackupFile.exists()) {
            return "Arquivo de backup no foi encontrado. No foi possvel importar.";
        } else if (!dbBackupFile.canRead()) {
            return "Arquivo de backup no pode ser lido. No foi possvel importar.";
        }

        File dbFile = new File(databaseName);

        if (dbFile.exists()) {
            dbFile.delete();
        }

        try {
            AndroidFileUtils.copyFile(dbBackupFile, dbFile);
            return "OK";
        } catch (IOException e) {
            e.printStackTrace();
            return e.getMessage();
        }
    }

    @Override
    protected void onPostExecute(final String errMsg) {
        if (dialog.isShowing()) {
            dialog.dismiss();
        }

        AlertDialog.Builder dialog = new AlertDialog.Builder(activity);
        dialog.setTitle("Aviso");
        if (errMsg.equals("OK")) {
            dialog.setMessage("Importao realizada com sucesso!");
            Toast.makeText(activity, "Importao realizada com sucesso!", Toast.LENGTH_SHORT).show();
        } else {
            dialog.setMessage("Importao falhou - " + errMsg);
            Toast.makeText(activity, "Importao falhou - " + errMsg, Toast.LENGTH_LONG).show();
        }
        dialog.setCancelable(false);
        dialog.setPositiveButton("Ok", new OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                dialog.dismiss();
            }
        });
        AlertDialog dlg = dialog.create();
        dlg.setOnDismissListener(new OnDismissListener() {
            @Override
            public void onDismiss(DialogInterface dialog) {
                activity.setResult(ImportDatabaseTask.TABLES_RECREATED);
                activity.finish();
            }
        });
        dlg.show();
    }
}