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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
import android.app.Application
import android.util.Log
import androidx.annotation.UiThread
import androidx.lifecycle.AndroidViewModel
import androidx.lifecycle.LiveData
import androidx.lifecycle.MutableLiveData
import androidx.lifecycle.distinctUntilChanged
import com.fasterxml.jackson.databind.DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES
import com.fasterxml.jackson.databind.ObjectMapper
import com.fasterxml.jackson.module.kotlin.KotlinModule
import net.taler.common.Amount
import net.taler.wallet.backend.WalletBackendApi
import net.taler.wallet.payment.PaymentManager
import net.taler.wallet.pending.PendingOperationsManager
import net.taler.wallet.refund.RefundManager
import net.taler.wallet.transactions.TransactionManager
import net.taler.wallet.withdraw.WithdrawManager
import org.json.JSONObject
const val TAG = "taler-wallet"
private val transactionNotifications = listOf(
"proposal-accepted",
"refresh-revealed",
"withdraw-group-finished"
)
data class BalanceItem(val available: Amount, val pendingIncoming: Amount)
class MainViewModel(val app: Application) : AndroidViewModel(app) {
private val mBalances = MutableLiveData<Map<String, BalanceItem>>()
val balances: LiveData<Map<String, BalanceItem>> = mBalances.distinctUntilChanged()
val devMode = MutableLiveData(BuildConfig.DEBUG)
val showProgressBar = MutableLiveData<Boolean>()
private val walletBackendApi = WalletBackendApi(app, {
// nothing to do when we connect, balance will be requested by BalanceFragment in onStart()
}) { payload ->
if (
payload.getString("type") != "waiting-for-retry" && // ignore ping
payload.optString("operation") != "init" // ignore init notification
) {
Log.i(TAG, "Received notification from wallet-core: ${payload.toString(2)}")
loadBalances()
if (payload.optString("type") in transactionNotifications) {
// update transaction list
// TODO do this in a better way
transactionManager.showAll.value?.let {
transactionManager.showAll.postValue(it)
}
}
// refresh pending ops with each notification
if (devMode.value == true) pendingOperationsManager.getPending()
}
}
private val mapper = ObjectMapper()
.registerModule(KotlinModule())
.configure(FAIL_ON_UNKNOWN_PROPERTIES, false)
val withdrawManager = WithdrawManager(walletBackendApi)
val paymentManager = PaymentManager(walletBackendApi, mapper)
val pendingOperationsManager: PendingOperationsManager =
PendingOperationsManager(walletBackendApi)
val transactionManager: TransactionManager = TransactionManager(walletBackendApi, mapper)
val refundManager = RefundManager(walletBackendApi)
override fun onCleared() {
walletBackendApi.destroy()
super.onCleared()
}
@UiThread
fun loadBalances() {
showProgressBar.value = true
walletBackendApi.sendRequest("getBalances", null) { isError, result ->
if (isError) {
Log.e(TAG, "Error retrieving balances: ${result.toString(2)}")
return@sendRequest
}
val balanceMap = HashMap<String, BalanceItem>()
val byCurrency = result.getJSONObject("byCurrency")
val currencyList = byCurrency.keys().asSequence().toList().sorted()
for (currency in currencyList) {
val jsonAmount = byCurrency.getJSONObject(currency)
.getJSONObject("available")
val amount = Amount.fromJsonObject(jsonAmount)
val jsonAmountIncoming = byCurrency.getJSONObject(currency)
.getJSONObject("pendingIncoming")
val amountIncoming = Amount.fromJsonObject(jsonAmountIncoming)
balanceMap[currency] = BalanceItem(amount, amountIncoming)
}
mBalances.postValue(balanceMap)
showProgressBar.postValue(false)
}
}
@UiThread
fun dangerouslyReset() {
walletBackendApi.sendRequest("reset", null)
withdrawManager.testWithdrawalInProgress.value = false
mBalances.value = emptyMap()
}
fun startTunnel() {
walletBackendApi.sendRequest("startTunnel", null)
}
fun stopTunnel() {
walletBackendApi.sendRequest("stopTunnel", null)
}
fun tunnelResponse(resp: String) {
val respJson = JSONObject(resp)
walletBackendApi.sendRequest("tunnelResponse", respJson)
}
}
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