1 files changed, 65 insertions, 0 deletions
diff --git a/wallet/src/main/java/net/taler/wallet/exchanges/ExchangeManager.kt b/wallet/src/main/java/net/taler/wallet/exchanges/ExchangeManager.kt
new file mode 100644
index 0000000..fe8ac76
--- /dev/null
+++ b/wallet/src/main/java/net/taler/wallet/exchanges/ExchangeManager.kt
@@ -0,0 +1,65 @@
+/*
+ * 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.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()
+
+    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<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.e(TAG, "list Success: $exchanges")
+                mProgress.value = false
+                mExchanges.value = exchanges
+            }
+        }
+        return mExchanges
+    }
+
+}