package com.cdiamon.autocolorist.tables;

import android.content.Context;
import android.database.Cursor;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteException;
import android.database.sqlite.SQLiteOpenHelper;

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

/**
 * Created by Dmitriy on 28.12.2016.
 */

class DBHelper extends SQLiteOpenHelper {


    //The Android's default system path of your application database.

    private static final String DATABASE_PATH = "/data/data/com.cdiamon.autocolorist/databases/";
    private static final String DATABASE_NAME = "converttables.db";
    private static final String DATABASE_TABLE = "paints_name";
    private static final int DATABASE_VERSION = 1;

    private SQLiteDatabase myDataBase;
    private final Context myContext;

    String QueryString = "";

    final String[] componentNames = new String[30];

    /**
     * Constructor
     * Takes and keeps a reference of the passed context in order to access to the application assets and resources.
     *
     * @param context
     */

    DBHelper(Context context) {
        super(context, DATABASE_NAME, null, DATABASE_VERSION);
        this.myContext = context;
    }

    /**
     * Creates a empty database on the system and rewrites it with your own database.
     */
    void createDataBase() throws IOException {

        boolean dbExist = checkDataBase();

        if (dbExist) {
            //do nothing - database already exist
        } else {

            //By calling this method and empty database will be created into the default system path
            //of your application so we are gonna be able to overwrite that database with our database.
            this.getReadableDatabase();

            try {

                copyDataBase();

            } catch (IOException e) {

                throw new Error("Error copying database");

            }
        }


    }

    /**
     * Check if the database already exist to avoid re-copying the file each time you open the application.
     *
     * @return true if it exists, false if it doesn't
     */
    private boolean checkDataBase() {

        SQLiteDatabase checkDB = null;

        try {
            String myPath = DATABASE_PATH + DATABASE_NAME;
            checkDB = SQLiteDatabase.openDatabase(myPath, null, SQLiteDatabase.OPEN_READONLY);

        } catch (SQLiteException e) {

            //database does't exist yet.

        }

        if (checkDB != null) {

            checkDB.close();

        }

        return checkDB != null ? true : false;
    }

    /**
     * Copies your database from your local assets-folder to the just created empty database in the
     * system folder, from where it can be accessed and handled.
     * This is done by transfering bytestream.
     */
    private void copyDataBase() throws IOException {

        //Open your local db as the input stream
        InputStream myInput = myContext.getAssets().open(DATABASE_NAME);

        // Path to the just created empty db
        String outFileName = DATABASE_PATH + DATABASE_NAME;

        //Open the empty db as the output stream
        OutputStream myOutput = new FileOutputStream(outFileName);

        //transfer bytes from the inputfile to the outputfile
        byte[] buffer = new byte[1024];
        int length;
        while ((length = myInput.read(buffer)) > 0) {
            myOutput.write(buffer, 0, length);
        }

        //Close the streams
        myOutput.flush();
        myOutput.close();
        myInput.close();

    }

    void openDataBase() throws SQLException {

        //Open the database
        String myPath = DATABASE_PATH + DATABASE_NAME;
        myDataBase = SQLiteDatabase.openDatabase(myPath, null, SQLiteDatabase.OPEN_READONLY);

    }

    @Override
    public synchronized void close() {

        if (myDataBase != null)
            myDataBase.close();

        super.close();

    }

    @Override
    public void onCreate(SQLiteDatabase sqLiteDatabase) {

    }

    @Override
    public void onUpgrade(SQLiteDatabase sqLiteDatabase, int oldversion, int newversion) {

    }

    void searchData(String vendorName, String componentName) {
        myDataBase = this.getReadableDatabase();
        Cursor cursor;
        String QueryString = "select * from " + DATABASE_TABLE + " where " + vendorName + "=" +'"'+componentName.toUpperCase()+'"';
        cursor = myDataBase.rawQuery(QueryString, null);
        if (cursor != null && cursor.moveToFirst()) {

            int s = 0;
            while (cursor.isLast() && s != 29) {
                componentNames[s] = cursor.getString(s);
                System.out.println(cursor.getString(s));
                s += 1;
            }
        }
        StringBuilder builder = new StringBuilder();
        for(String s : componentNames) {
            builder.append(s);
        }

        System.out.println(componentNames[1]);
        if (cursor != null) {
            cursor.close();
        }
    }
}

@@ -4504,16 +4504,27 @@
 se()+'%22'
++ %22LIMIT 1%22
 ;%0A      

Fix DB LIMIT