1 files changed, 78 insertions, 0 deletions
diff --git a/wallet/src/main/java/net/taler/wallet/history/DevHistoryManager.kt b/wallet/src/main/java/net/taler/wallet/history/DevHistoryManager.kt
new file mode 100644
index 0000000..72967b2
--- /dev/null
+++ b/wallet/src/main/java/net/taler/wallet/history/DevHistoryManager.kt
@@ -0,0 +1,78 @@
+/*
+ * 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.history
+
+import androidx.annotation.UiThread
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.MutableLiveData
+import com.fasterxml.jackson.databind.ObjectMapper
+import com.fasterxml.jackson.module.kotlin.readValue
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import net.taler.wallet.backend.WalletBackendApi
+import org.json.JSONObject
+
+sealed class HistoryResult {
+    object Error : HistoryResult()
+    class Success(val history: History) : HistoryResult()
+}
+
+class DevHistoryManager(
+    private val walletBackendApi: WalletBackendApi,
+    private val scope: CoroutineScope,
+    private val mapper: ObjectMapper
+) {
+
+    private val mProgress = MutableLiveData<Boolean>()
+    val progress: LiveData<Boolean> = mProgress
+
+    private val mHistory = MutableLiveData<HistoryResult>()
+    val history: LiveData<HistoryResult> = mHistory
+
+    @UiThread
+    internal fun loadHistory() {
+        mProgress.value = true
+        walletBackendApi.sendRequest("getHistory", null) { isError, result ->
+            scope.launch(Dispatchers.Default) {
+                onEventsLoaded(isError, result)
+            }
+        }
+    }
+
+    private fun onEventsLoaded(isError: Boolean, result: JSONObject) {
+        if (isError) {
+            mHistory.postValue(HistoryResult.Error)
+            return
+        }
+        val history = History()
+        val json = result.getJSONArray("history")
+        for (i in 0 until json.length()) {
+            val event: HistoryEvent = mapper.readValue(json.getString(i))
+            event.json = json.getJSONObject(i)
+            history.add(event)
+        }
+        history.reverse()  // show latest first
+        mProgress.postValue(false)
+        mHistory.postValue(
+            HistoryResult.Success(
+                history
+            )
+        )
+    }
+
+}