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package net.taler.merchantpos.payment
import android.graphics.Bitmap
import android.graphics.Bitmap.Config.RGB_565
import android.graphics.Color.BLACK
import android.graphics.Color.WHITE
import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.fragment.app.Fragment
import androidx.fragment.app.activityViewModels
import androidx.lifecycle.Observer
import androidx.navigation.fragment.findNavController
import com.google.android.material.snackbar.Snackbar
import com.google.android.material.snackbar.Snackbar.LENGTH_SHORT
import com.google.zxing.BarcodeFormat.QR_CODE
import com.google.zxing.common.BitMatrix
import com.google.zxing.qrcode.QRCodeWriter
import kotlinx.android.synthetic.main.fragment_process_payment.*
import net.taler.merchantpos.MainViewModel
import net.taler.merchantpos.R
import net.taler.merchantpos.order.getTotalAsString
class ProcessPaymentFragment : Fragment() {
private val model: MainViewModel by activityViewModels()
private val paymentManager by lazy { model.paymentManager }
override fun onCreateView(
inflater: LayoutInflater, container: ViewGroup?,
savedInstanceState: Bundle?
): View? {
return inflater.inflate(R.layout.fragment_process_payment, container, false)
}
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
paymentManager.payment.observe(viewLifecycleOwner, Observer { payment ->
onPaymentStateChanged(payment)
})
button_cancel_payment.setOnClickListener {
onPaymentCancel()
}
}
private fun onPaymentStateChanged(payment: Payment) {
if (payment.error) {
Snackbar.make(view!!, "Network Error", LENGTH_SHORT).show()
return
}
if (payment.paid) {
findNavController().navigate(R.id.action_processPayment_to_paymentSuccess)
model.orderManager.restartOrUndo()
return
}
text_view_amount.text = "${payment.order.getTotalAsString()} ${payment.currency}"
text_view_order_reference.text = "Order Reference: ${payment.orderId}"
payment.talerPayUri?.let {
val myBitmap = makeQrCode(it)
qrcode.setImageBitmap(myBitmap)
}
}
private fun onPaymentCancel() {
val navController = findNavController()
navController.popBackStack()
val mySnackbar = Snackbar.make(view!!, "Payment Canceled", LENGTH_SHORT)
mySnackbar.show()
}
private fun makeQrCode(text: String): Bitmap {
val qrCodeWriter = QRCodeWriter()
val bitMatrix: BitMatrix = qrCodeWriter.encode(text, QR_CODE, 256, 256)
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
}
}
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