/* * 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.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.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() val progress: LiveData = mProgress private val mExchanges = MutableLiveData>() val exchanges: LiveData> get() = list() fun add(exchangeUrl: String) { val args = JSONObject().apply { put("exchangeBaseUrl", exchangeUrl) } walletBackendApi.sendRequest("addExchange", args) { isError, result -> if (isError) { Log.e(TAG, "add Error: $result") } else { Log.e(TAG, "add Success: $result") } } } private fun list(): LiveData> { mProgress.value = true walletBackendApi.sendRequest("listExchanges", JSONObject()) { isError, result -> if (isError) { throw AssertionError("Wallet core failed to return exchanges!") } else { val exchanges: List = mapper.readValue(result.getString("exchanges")) Log.e(TAG, "list Success: $exchanges") mProgress.value = false mExchanges.value = exchanges } } return mExchanges } }