/* ownCloud Android client application
 *   Copyright (C) 2011  Bartek Przybylski
 *
 *   This program is free software: you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation, either version 3 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */
package eu.alefzero.owncloud.db;

import java.util.Vector;

import eu.alefzero.owncloud.OwnCloudSession;

import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;

/**
 * Custom database helper for ownCloud
 * @author Bartek Przybylski
 *
 */
public class DbHandler {
  private SQLiteDatabase mDB;
  private OpenerHepler mHelper;
  private final String mDatabaseName = "ownCloud";
  private final String TABLE_SESSIONS = "sessions";
  private final int mDatabaseVersion = 1;
  
  public DbHandler(Context context) {
    mHelper = new OpenerHepler(context);
    mDB = mHelper.getWritableDatabase();
  }
  
  public Vector<OwnCloudSession> getSessionList() {
    Cursor c = mDB.query(TABLE_SESSIONS, null, null, null, null, null, null);
    Vector<OwnCloudSession> v = new Vector<OwnCloudSession>();
    if (!c.moveToFirst()) {
      return v;
    }
    while (!c.isAfterLast()) {
      v.add(new OwnCloudSession(c.getString(c.getColumnIndex("sessionName")),
                                c.getString(c.getColumnIndex("sessionUrl")),
                                c.getInt(c.getColumnIndex("_id"))));
      c.moveToNext();
    }
    c.close();
    return v;
  }
  
  public void addSession(String sessionName, String uri) {
    ContentValues cv = new ContentValues();
    cv.put("sessionName", sessionName);
    cv.put("sessionUrl", uri);
    mDB.insert(TABLE_SESSIONS, null, cv);
  }
  
  public void removeSessionWithId(int sessionId) {
    mDB.delete(TABLE_SESSIONS, "_id = ?", new String[] {String.valueOf(sessionId)});
  }

  public void changeSessionFields(int id, String hostname, String uri) {
    ContentValues cv = new ContentValues();
    cv.put("sessionName", hostname);
    cv.put("sessionUrl", uri);
    mDB.update(TABLE_SESSIONS, cv, "_id = ?", new String[] {String.valueOf(id)});
  }
  
  public void close() {
    mDB.close();
  }
  
  private class OpenerHepler extends SQLiteOpenHelper {
    public OpenerHepler(Context context) {
      super(context, mDatabaseName, null, mDatabaseVersion);
    }

    @Override
    public void onCreate(SQLiteDatabase db) {
      db.execSQL("CREATE TABLE " + TABLE_SESSIONS + " (" +
                 " _id INTEGER PRIMARY KEY, " +
                 " sessionName TEXT, " +
                 " sessionUrl  TEXT);");
    }

    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
    }
  }
}