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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.merchantpos.refund
import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import androidx.annotation.StringRes
import androidx.fragment.app.Fragment
import androidx.fragment.app.activityViewModels
import androidx.navigation.fragment.findNavController
import com.google.android.material.snackbar.BaseTransientBottomBar.LENGTH_LONG
import com.google.android.material.snackbar.Snackbar
import net.taler.common.fadeIn
import net.taler.common.fadeOut
import net.taler.common.navigate
import net.taler.common.showError
import net.taler.lib.common.Amount
import net.taler.lib.common.AmountParserException
import net.taler.merchantlib.OrderHistoryEntry
import net.taler.merchantpos.MainViewModel
import net.taler.merchantpos.R
import net.taler.merchantpos.databinding.FragmentRefundBinding
import net.taler.merchantpos.refund.RefundFragmentDirections.Companion.actionRefundFragmentToRefundUriFragment
import net.taler.merchantpos.refund.RefundResult.AlreadyRefunded
import net.taler.merchantpos.refund.RefundResult.Error
import net.taler.merchantpos.refund.RefundResult.PastDeadline
import net.taler.merchantpos.refund.RefundResult.Success
class RefundFragment : Fragment() {
private val model: MainViewModel by activityViewModels()
private val refundManager by lazy { model.refundManager }
private lateinit var ui: FragmentRefundBinding
override fun onCreateView(
inflater: LayoutInflater, container: ViewGroup?,
savedInstanceState: Bundle?
): View? {
ui = FragmentRefundBinding.inflate(inflater, container, false)
return ui.root
}
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
val item = refundManager.toBeRefunded ?: throw IllegalStateException()
ui.amountInputView.setText(item.amount.amountStr)
ui.currencyView.text = item.amount.currency
ui.abortButton.setOnClickListener { findNavController().navigateUp() }
ui.refundButton.setOnClickListener { onRefundButtonClicked(item) }
refundManager.refundResult.observe(viewLifecycleOwner, { result ->
onRefundResultChanged(result)
})
}
private fun onRefundButtonClicked(item: OrderHistoryEntry) {
val inputAmount = try {
Amount.fromString(item.amount.currency, ui.amountInputView.text.toString())
} catch (e: AmountParserException) {
ui.amountView.error = getString(R.string.refund_error_invalid_amount)
return
}
if (inputAmount > item.amount) {
ui.amountView.error = getString(R.string.refund_error_max_amount, item.amount.amountStr)
return
}
if (inputAmount.isZero()) {
ui.amountView.error = getString(R.string.refund_error_zero)
return
}
ui.amountView.error = null
ui.refundButton.fadeOut()
ui.progressBar.fadeIn()
refundManager.refund(item, inputAmount, ui.reasonInputView.text.toString())
}
private fun onRefundResultChanged(result: RefundResult?): Any = when (result) {
is Error -> onError(R.string.refund_error_backend, result.msg)
PastDeadline -> onError(R.string.refund_error_deadline)
AlreadyRefunded -> onError(R.string.refund_error_already_refunded)
is Success -> {
ui.progressBar.fadeOut()
ui.refundButton.fadeIn()
navigate(actionRefundFragmentToRefundUriFragment())
}
null -> { // no-op
}
}
private fun onError(@StringRes main: Int, details: String = "") {
requireActivity().showError(main, details)
ui.progressBar.fadeOut()
ui.refundButton.fadeIn()
}
}
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