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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.tip
import android.util.Log
import androidx.annotation.UiThread
import androidx.lifecycle.LiveData
import androidx.lifecycle.MutableLiveData
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.launch
import net.taler.common.Amount
import net.taler.common.Timestamp
import net.taler.wallet.TAG
import net.taler.wallet.backend.WalletBackendApi
import net.taler.wallet.backend.TalerErrorInfo
import net.taler.wallet.tip.PrepareTipResponse.TipPossibleResponse
import net.taler.wallet.tip.PrepareTipResponse.AlreadyAcceptedResponse
sealed class TipStatus {
object None : TipStatus()
object Loading : TipStatus()
data class Prepared(
val walletTipId: String,
val merchantBaseUrl: String,
val exchangeBaseUrl: String,
val expirationTimestamp: Timestamp,
val tipAmountRaw: Amount,
val tipAmountEffective: Amount,
) : TipStatus()
data class AlreadyAccepted(
val walletTipId: String,
) : TipStatus()
// TODO bring user to fulfilment URI
data class Error(val error: String) : TipStatus()
data class Success(val currency: String) : TipStatus()
}
class TipManager(
private val api: WalletBackendApi,
private val scope: CoroutineScope,
) {
private val mTipStatus = MutableLiveData<TipStatus>(TipStatus.None)
internal val tipStatus: LiveData<TipStatus> = mTipStatus
@UiThread
fun prepareTip(url: String) = scope.launch {
mTipStatus.value = TipStatus.Loading
api.request("prepareTip", PrepareTipResponse.serializer()) {
put("talerTipUri", url)
}.onError {
handleError("prepareTip", it)
}.onSuccess { response ->
mTipStatus.value = when (response) {
is TipPossibleResponse -> response.toTipStatusPrepared()
is AlreadyAcceptedResponse -> TipStatus.AlreadyAccepted(
response.walletTipId
)
}
}
}
fun confirmTip(tipId: String, currency: String) = scope.launch {
api.request("acceptTip", ConfirmTipResult.serializer()) {
put("walletTipId", tipId)
}.onError {
handleError("acceptTip", it)
}.onSuccess {
mTipStatus.postValue(TipStatus.Success(currency))
}
}
/*
@UiThread
fun abortTip() {
val ps = tipStatus.value
if (ps is TipStatus.Prepared) {
abortProposal(ps.walletTipId)
}
resetTipStatus()
}
*/
/*
internal fun abortProposal(proposalId: String) = scope.launch {
Log.i(TAG, "aborting proposal")
api.request<Unit>("abortProposal") {
put("proposalId", proposalId)
}.onError {
Log.e(TAG, "received error response to abortProposal")
handleError("abortProposal", it)
}.onSuccess {
mTipStatus.postValue(TipStatus.None)
}
}
*/
@UiThread
fun resetTipStatus() {
mTipStatus.value = TipStatus.None
}
private fun handleError(operation: String, error: TalerErrorInfo) {
Log.e(TAG, "got $operation error result $error")
mTipStatus.value = TipStatus.Error(error.userFacingMsg)
}
}
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