Import/Export activity

5 files changed, 228 insertions, 0 deletions

diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 56d076441..919511a6f 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -177,6 +177,13 @@
                 android:value="de.danoeh.antennapod.activity.PreferenceActivity"/>
         </activity>
         <activity
+                android:name=".activity.ImportExportActivity"
+                android:label="@string/import_export">
+            <meta-data
+                    android:name="android.support.PARENT_ACTIVITY"
+                    android:value="de.danoeh.antennapod.activity.PreferenceActivity"/>
+        </activity>
+        <activity
             android:name=".activity.OpmlImportFromPathActivity"
             android:configChanges="keyboardHidden|orientation|screenSize"
             android:label="@string/opml_import_label">
diff --git a/app/src/main/java/de/danoeh/antennapod/activity/ImportExportActivity.java b/app/src/main/java/de/danoeh/antennapod/activity/ImportExportActivity.java
new file mode 100644
index 000000000..5cd562d45
--- /dev/null
+++ b/app/src/main/java/de/danoeh/antennapod/activity/ImportExportActivity.java
@@ -0,0 +1,183 @@
+package de.danoeh.antennapod.activity;
+
+import android.content.Context;
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.database.Cursor;
+import android.net.Uri;
+import android.os.Build;
+import android.os.Bundle;
+import android.os.Environment;
+import android.support.v7.app.AlertDialog;
+import android.support.v7.app.AppCompatActivity;
+import android.util.Log;
+import android.view.Menu;
+import android.view.MenuInflater;
+import android.view.MenuItem;
+import android.view.View;
+import android.widget.AdapterView;
+import android.widget.ListView;
+import android.widget.ProgressBar;
+import android.widget.RadioButton;
+import android.widget.TextView;
+import de.danoeh.antennapod.R;
+import de.danoeh.antennapod.adapter.StatisticsListAdapter;
+import de.danoeh.antennapod.core.preferences.UserPreferences;
+import de.danoeh.antennapod.core.storage.DBReader;
+import de.danoeh.antennapod.core.storage.PodDBAdapter;
+import de.danoeh.antennapod.core.util.Converter;
+import rx.Observable;
+import rx.Subscription;
+import rx.android.schedulers.AndroidSchedulers;
+import rx.schedulers.Schedulers;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.nio.channels.FileChannel;
+
+/**
+ * Displays the 'statistics' screen
+ */
+public class ImportExportActivity extends AppCompatActivity {
+    private static final int READ_REQUEST_CODE = 41;
+    private static final int READ_REQUEST_CODE_DOCUMENT = 42;
+
+    private static final String TAG = ImportExportActivity.class.getSimpleName();
+
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        setTheme(UserPreferences.getTheme());
+        super.onCreate(savedInstanceState);
+        getSupportActionBar().setDisplayShowHomeEnabled(true);
+        setContentView(R.layout.import_export_activity);
+
+
+        //backup();
+        //restore();
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        if (item.getItemId() == android.R.id.home) {
+            finish();
+            return true;
+        } else {
+            return super.onOptionsItemSelected(item);
+        }
+    }
+
+    private void restore() {
+        if(Build.VERSION.SDK_INT >= 19) {
+            Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
+            intent.setType("*/*");
+            startActivityForResult(intent, READ_REQUEST_CODE_DOCUMENT);
+        } else {
+            Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
+            intent.setType("*/*");
+            startActivityForResult(Intent.createChooser(intent, "Select a File to import"), READ_REQUEST_CODE);
+        }
+    }
+
+    @Override
+    public void onActivityResult(int requestCode, int resultCode, Intent resultData) {
+        File currentDB = getDatabasePath(PodDBAdapter.DATABASE_NAME);
+
+        if (requestCode == READ_REQUEST_CODE_DOCUMENT && resultCode == RESULT_OK) {
+            if (resultData != null) {
+                Uri uri = resultData.getData();
+
+                try {
+                    InputStream inputStream = getContentResolver().openInputStream(uri);
+                    copyInputStreamToFile(inputStream, currentDB);
+                    inputStream.close();
+                } catch (Exception e) {
+                    e.printStackTrace();
+                }
+
+            }
+        } else if(requestCode == READ_REQUEST_CODE && resultCode == RESULT_OK) {
+            if (resultData != null) {
+                Uri uri = resultData.getData();
+                try {
+                    File backupDB = new File(getPath(getBaseContext(), uri));
+
+                    if (backupDB.exists()) {
+                        FileChannel src = new FileInputStream(currentDB).getChannel();
+                        FileChannel dst = new FileOutputStream(backupDB).getChannel();
+                        dst.transferFrom(src, 0, src.size());
+                        src.close();
+                        dst.close();
+                    }
+                } catch (Exception e) {
+                    e.printStackTrace();
+                }
+            }
+        }
+    }
+
+    private void copyInputStreamToFile(InputStream in, File file) {
+        try {
+            OutputStream out = new FileOutputStream(file);
+            byte[] buf = new byte[1024];
+            int len;
+            while((len=in.read(buf))>0){
+                out.write(buf,0,len);
+            }
+            out.close();
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    private static String getPath(Context context, Uri uri) {
+        if ("content".equalsIgnoreCase(uri.getScheme())) {
+            String[] projection = { "_data" };
+            Cursor cursor = null;
+
+            try {
+                cursor = context.getContentResolver().query(uri, projection, null, null, null);
+                int column_index = cursor.getColumnIndexOrThrow("_data");
+                if (cursor.moveToFirst()) {
+                    return cursor.getString(column_index);
+                }
+            } catch (Exception e) {
+                // Eat it
+            }
+        }
+        else if ("file".equalsIgnoreCase(uri.getScheme())) {
+            return uri.getPath();
+        }
+
+        return null;
+    }
+
+    private void backup() {
+        try {
+            File sd = Environment.getExternalStorageDirectory();
+
+            if (sd.canWrite()) {
+                File currentDB = getDatabasePath(PodDBAdapter.DATABASE_NAME);
+                File backupDB = new File(sd, "AntennaPodBackup.db");
+
+                if (currentDB.exists()) {
+                    FileChannel src = new FileInputStream(currentDB).getChannel();
+                    FileChannel dst = new FileOutputStream(backupDB).getChannel();
+                    dst.transferFrom(src, 0, src.size());
+                    src.close();
+                    dst.close();
+                }
+            }
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+}
diff --git a/app/src/main/java/de/danoeh/antennapod/preferences/PreferenceController.java b/app/src/main/java/de/danoeh/antennapod/preferences/PreferenceController.java
index 1ca0d0109..e8c35b9a7 100644
--- a/app/src/main/java/de/danoeh/antennapod/preferences/PreferenceController.java
+++ b/app/src/main/java/de/danoeh/antennapod/preferences/PreferenceController.java
@@ -39,6 +39,7 @@ import android.widget.Toast;
 
 import com.afollestad.materialdialogs.MaterialDialog;
 
+import de.danoeh.antennapod.activity.ImportExportActivity;
 import org.apache.commons.lang3.ArrayUtils;
 
 import java.io.File;
@@ -95,6 +96,7 @@ public class PreferenceController implements SharedPreferences.OnSharedPreferenc
     private static final String PREF_OPML_EXPORT = "prefOpmlExport";
     private static final String PREF_HTML_EXPORT = "prefHtmlExport";
     private static final String STATISTICS = "statistics";
+    private static final String IMPORT_EXPORT = "importExport";
     private static final String PREF_ABOUT = "prefAbout";
     private static final String PREF_CHOOSE_DATA_DIR = "prefChooseDataDir";
     private static final String AUTO_DL_PREF_SCREEN = "prefAutoDownloadSettings";
@@ -191,6 +193,12 @@ public class PreferenceController implements SharedPreferences.OnSharedPreferenc
                     return true;
                 }
         );
+        ui.findPreference(PreferenceController.IMPORT_EXPORT).setOnPreferenceClickListener(
+                preference -> {
+                    activity.startActivity(new Intent(activity, ImportExportActivity.class));
+                    return true;
+                }
+        );
         ui.findPreference(PreferenceController.PREF_OPML_EXPORT).setOnPreferenceClickListener(
                 preference -> export(new OpmlWriter()));
         ui.findPreference(PreferenceController.PREF_HTML_EXPORT).setOnPreferenceClickListener(
diff --git a/app/src/main/res/layout/import_export_activity.xml b/app/src/main/res/layout/import_export_activity.xml
new file mode 100644
index 000000000..91e798ead
--- /dev/null
+++ b/app/src/main/res/layout/import_export_activity.xml
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:paddingTop="8dp"
+    android:paddingBottom="8dp">
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/import_export_warning"
+        android:gravity="center_horizontal"/>
+
+    <Button
+            android:text="@string/label_export"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:id="@+id/button_export"/>
+
+    <Button
+            android:text="@string/label_import"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:id="@+id/button_import"/>
+
+</LinearLayout>
diff --git a/app/src/main/res/xml/preferences.xml b/app/src/main/res/xml/preferences.xml
index e81115627..8ed7da731 100644
--- a/app/src/main/res/xml/preferences.xml
+++ b/app/src/main/res/xml/preferences.xml
@@ -316,6 +316,9 @@
             android:key="prefHtmlExport"
             android:title="@string/html_export_label"/>
         <Preference
+            android:key="importExport"
+            android:title="@string/import_export"/>
+        <Preference
             android:key="statistics"
             android:title="@string/statistics_label"/>
     </PreferenceCategory>