package database;

import android.content.ContentValues;
import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.provider.ContactsContract;

public class DatabaseHelper extends SQLiteOpenHelper implements  DatabaseConstants
{

    private static DatabaseHelper helper;

    public DatabaseHelper(Context context)
    {
        super(context, DATABASE_NAME, null, DATABASE_VERSION);
    }

    public static DatabaseHelper getInstance(Context context)
    {
        if(helper == null)
        {
            synchronized (DatabaseHelper.class)
            {
                if(helper == null)
                {
                    helper = new DatabaseHelper(context);
                }
            }
        }
        return helper;
    }

    @Override
    public void onCreate(SQLiteDatabase db)
    {
        db.execSQL(CREATE_TABLE_FEEDBACK);
    }

    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion)
    {
        db.execSQL(DROP_TABLE_FEEDBACK);
        onCreate(db);
    }
}