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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 com.fasterxml.jackson.databind.ObjectMapper
import com.fasterxml.jackson.module.kotlin.readValue
import net.taler.common.Amount
import net.taler.common.Event
import net.taler.common.toEvent
import net.taler.wallet.TAG
import net.taler.wallet.backend.WalletBackendApi
import org.json.JSONObject
class ExchangeManager(
private val walletBackendApi: WalletBackendApi,
private val mapper: ObjectMapper
) {
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
walletBackendApi.sendRequest("listExchanges", JSONObject()) { isError, result ->
if (isError) {
throw AssertionError("Wallet core failed to return exchanges!")
} else {
val exchanges: List<ExchangeItem> = mapper.readValue(result.getString("exchanges"))
Log.d(TAG, "Exchange list: $exchanges")
mProgress.value = false
mExchanges.value = exchanges
}
}
return mExchanges
}
fun add(exchangeUrl: String) {
mProgress.value = true
val args = JSONObject().apply { put("exchangeBaseUrl", exchangeUrl) }
walletBackendApi.sendRequest("addExchange", args) { isError, result ->
mProgress.value = false
if (isError) {
Log.e(TAG, "$result")
mAddError.value = true.toEvent()
} else {
Log.d(TAG, "Exchange $exchangeUrl added")
list()
}
}
}
}
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