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/*
 * This file is part of GNU Taler
 * (C) 2020 Taler Systems S.A.
 *
 * GNU Taler 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, or (at your option) any later version.
 *
 * GNU Taler 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
 * GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
 */

package net.taler.common

import android.graphics.Bitmap
import android.graphics.Bitmap.Config.RGB_565
import android.graphics.Color.BLACK
import android.graphics.Color.WHITE
import com.google.zxing.BarcodeFormat.QR_CODE
import com.google.zxing.qrcode.QRCodeWriter

object QrCodeManager {

    fun makeQrCode(text: String, size: Int = 256): Bitmap {
        val qrCodeWriter = QRCodeWriter()
        val bitMatrix = qrCodeWriter.encode(text, QR_CODE, size, size)
        val height = bitMatrix.height
        val width = bitMatrix.width
        val bmp = Bitmap.createBitmap(width, height, RGB_565)
        for (x in 0 until width) {
            for (y in 0 until height) {
                bmp.setPixel(x, y, if (bitMatrix.get(x, y)) BLACK else WHITE)
            }
        }
        return bmp
    }

}