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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.wallet.payment
import android.graphics.Bitmap
import android.os.Bundle
import android.util.Log
import android.view.LayoutInflater
import android.view.View
import android.view.View.GONE
import android.view.ViewGroup
import androidx.fragment.app.Fragment
import androidx.fragment.app.activityViewModels
import androidx.lifecycle.lifecycleScope
import androidx.navigation.fragment.findNavController
import androidx.recyclerview.widget.LinearLayoutManager
import com.google.android.material.snackbar.Snackbar
import com.google.android.material.snackbar.Snackbar.LENGTH_LONG
import kotlinx.coroutines.launch
import net.taler.common.Amount
import net.taler.common.ContractTerms
import net.taler.common.fadeIn
import net.taler.common.fadeOut
import net.taler.common.showError
import net.taler.wallet.MainViewModel
import net.taler.wallet.R
import net.taler.wallet.TAG
import net.taler.wallet.databinding.FragmentPromptPaymentBinding
import net.taler.wallet.showError
/**
* Show a payment and ask the user to accept/decline.
*/
class PromptPaymentFragment : Fragment(), ProductImageClickListener {
private val model: MainViewModel by activityViewModels()
private val paymentManager by lazy { model.paymentManager }
private val transactionManager by lazy { model.transactionManager }
private lateinit var ui: FragmentPromptPaymentBinding
private val adapter = ProductAdapter(this)
override fun onCreateView(
inflater: LayoutInflater, container: ViewGroup?,
savedInstanceState: Bundle?,
): View {
ui = FragmentPromptPaymentBinding.inflate(inflater, container, false)
return ui.root
}
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
paymentManager.payStatus.observe(viewLifecycleOwner, ::onPaymentStatusChanged)
ui.details.productsList.apply {
adapter = this@PromptPaymentFragment.adapter
layoutManager = LinearLayoutManager(requireContext())
}
}
override fun onDestroy() {
super.onDestroy()
if (!requireActivity().isChangingConfigurations) {
val payStatus = paymentManager.payStatus.value as? PayStatus.Prepared ?: return
transactionManager.abortTransaction(payStatus.transactionId) { error ->
Log.e(TAG, "Error abortTransaction $error")
if (model.devMode.value == false) {
showError(error.userFacingMsg)
} else {
showError(error)
}
}
}
}
private fun showLoading(show: Boolean) {
model.showProgressBar.value = show
if (show) {
ui.details.progressBar.fadeIn()
} else {
ui.details.progressBar.fadeOut()
}
}
private fun onPaymentStatusChanged(payStatus: PayStatus?) {
when (payStatus) {
null -> {}
is PayStatus.Prepared -> {
showLoading(false)
val fees = payStatus.amountEffective - payStatus.amountRaw
showOrder(payStatus.contractTerms, payStatus.amountRaw, fees)
ui.bottom.confirmButton.isEnabled = true
ui.bottom.confirmButton.setOnClickListener {
model.showProgressBar.value = true
paymentManager.confirmPay(
transactionId = payStatus.transactionId,
currency = payStatus.contractTerms.amount.currency,
)
ui.bottom.confirmButton.fadeOut()
ui.bottom.confirmProgressBar.fadeIn()
}
}
is PayStatus.InsufficientBalance -> {
showLoading(false)
showOrder(payStatus.contractTerms, payStatus.amountRaw)
ui.details.errorView.setText(R.string.payment_balance_insufficient)
ui.details.errorView.fadeIn()
}
is PayStatus.Success -> {
showLoading(false)
paymentManager.resetPayStatus()
navigateToTransaction(payStatus.transactionId)
Snackbar.make(requireView(), R.string.payment_initiated, LENGTH_LONG).show()
}
is PayStatus.AlreadyPaid -> {
showLoading(false)
paymentManager.resetPayStatus()
navigateToTransaction(payStatus.transactionId)
Snackbar.make(requireView(), R.string.payment_already_paid, LENGTH_LONG).show()
}
is PayStatus.Pending -> {
showLoading(false)
paymentManager.resetPayStatus()
navigateToTransaction(payStatus.transactionId)
if (payStatus.error != null && model.devMode.value == true) {
showError(payStatus.error)
} else {
showError(getString(R.string.payment_pending))
}
}
is PayStatus.None -> {
// No payment active.
showLoading(false)
}
is PayStatus.Loading -> {
// Wait until loaded ...
showLoading(true)
}
}
}
private fun showOrder(contractTerms: ContractTerms, amount: Amount, totalFees: Amount? = null) {
ui.details.orderView.text = contractTerms.summary
adapter.setItems(contractTerms.products)
ui.details.productsList.fadeIn()
ui.bottom.totalView.text = amount.toString()
if (totalFees != null && !totalFees.isZero()) {
ui.bottom.feeView.text = getString(R.string.payment_fee, totalFees)
ui.bottom.feeView.fadeIn()
} else {
ui.bottom.feeView.visibility = GONE
}
ui.details.orderLabelView.fadeIn()
ui.details.orderView.fadeIn()
ui.bottom.totalLabelView.fadeIn()
ui.bottom.totalView.fadeIn()
}
override fun onImageClick(image: Bitmap) {
val f = ProductImageFragment.new(image)
f.show(parentFragmentManager, "image")
}
private fun navigateToTransaction(id: String?) {
lifecycleScope.launch {
if (id != null && transactionManager.selectTransaction(id)) {
findNavController().navigate(R.id.action_promptPayment_to_nav_transactions_detail_payment)
} else {
findNavController().navigate(R.id.action_promptPayment_to_nav_main)
}
}
}
}
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