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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.exchanges
import android.util.Log
import androidx.lifecycle.LiveData
import androidx.lifecycle.MutableLiveData
import kotlinx.coroutines.CoroutineScope
import kotlinx.coroutines.launch
import kotlinx.serialization.Serializable
import net.taler.common.Event
import net.taler.common.toEvent
import net.taler.wallet.TAG
import net.taler.wallet.backend.WalletBackendApi
@Serializable
data class ExchangeListResponse(
val exchanges: List<ExchangeItem>
)
class ExchangeManager(
private val api: WalletBackendApi,
private val scope: CoroutineScope
) {
private val mProgress = MutableLiveData<Boolean>()
val progress: LiveData<Boolean> = mProgress
private val mExchanges = MutableLiveData<List<ExchangeItem>>()
val exchanges: LiveData<List<ExchangeItem>> get() = list()
private val mAddError = MutableLiveData<Event<Boolean>>()
val addError: LiveData<Event<Boolean>> = mAddError
var withdrawalExchange: ExchangeItem? = null
private fun list(): LiveData<List<ExchangeItem>> {
mProgress.value = true
scope.launch {
val response = api.request("listExchanges", ExchangeListResponse.serializer())
response.onError {
throw AssertionError("Wallet core failed to return exchanges!")
}.onSuccess {
Log.d(TAG, "Exchange list: ${it.exchanges}")
mProgress.value = false
mExchanges.value = it.exchanges
}
}
return mExchanges
}
fun add(exchangeUrl: String) = scope.launch {
mProgress.value = true
api.request<Unit>("addExchange") {
put("exchangeBaseUrl", exchangeUrl)
}.onError {
mProgress.value = false
Log.e(TAG, "Error adding exchange: $it")
mAddError.value = true.toEvent()
}.onSuccess {
mProgress.value = false
Log.d(TAG, "Exchange $exchangeUrl added")
list()
}
}
}
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