/*
* 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
*/
package net.taler.wallet.exchanges
import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.Toast
import android.widget.Toast.LENGTH_LONG
import androidx.fragment.app.Fragment
import androidx.fragment.app.activityViewModels
import androidx.navigation.fragment.findNavController
import androidx.recyclerview.widget.DividerItemDecoration
import androidx.recyclerview.widget.LinearLayoutManager.VERTICAL
import net.taler.common.EventObserver
import net.taler.common.fadeIn
import net.taler.common.fadeOut
import net.taler.wallet.MainViewModel
import net.taler.wallet.R
import net.taler.wallet.databinding.FragmentExchangeListBinding
open class ExchangeListFragment : Fragment(), ExchangeClickListener {
protected val model: MainViewModel by activityViewModels()
private val exchangeManager by lazy { model.exchangeManager }
private val transactionManager get() = model.transactionManager
protected lateinit var ui: FragmentExchangeListBinding
protected open val isSelectOnly = false
private val exchangeAdapter by lazy { ExchangeAdapter(isSelectOnly, this) }
override fun onCreateView(
inflater: LayoutInflater,
container: ViewGroup?,
savedInstanceState: Bundle?,
): View? {
ui = FragmentExchangeListBinding.inflate(inflater, container, false)
return ui.root
}
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
ui.list.apply {
adapter = exchangeAdapter
addItemDecoration(DividerItemDecoration(context, VERTICAL))
}
ui.addExchangeFab.setOnClickListener {
AddExchangeDialogFragment().show(parentFragmentManager, "ADD_EXCHANGE")
}
exchangeManager.progress.observe(viewLifecycleOwner) { show ->
if (show) ui.progressBar.fadeIn() else ui.progressBar.fadeOut()
}
exchangeManager.exchanges.observe(viewLifecycleOwner) { exchanges ->
onExchangeUpdate(exchanges)
}
exchangeManager.addError.observe(viewLifecycleOwner, EventObserver { error ->
if (error) onAddExchangeFailed()
})
}
protected open fun onExchangeUpdate(exchanges: List) {
exchangeAdapter.update(exchanges)
if (exchanges.isEmpty()) {
ui.emptyState.fadeIn()
ui.list.fadeOut()
} else {
ui.emptyState.fadeOut()
ui.list.fadeIn()
}
}
private fun onAddExchangeFailed() {
Toast.makeText(requireContext(), R.string.exchange_add_error, LENGTH_LONG).show()
}
override fun onExchangeSelected(item: ExchangeItem) {
throw AssertionError("must not get triggered here")
}
override fun onManualWithdraw(item: ExchangeItem) {
exchangeManager.withdrawalExchange = item
findNavController().navigate(R.id.action_nav_settings_exchanges_to_nav_exchange_manual_withdrawal)
}
override fun onPeerReceive(item: ExchangeItem) {
transactionManager.selectedCurrency = item.currency
findNavController().navigate(R.id.receiveFunds)
}
}