From c3c43726de9858f42fee9d4051ab3d3245b47099 Mon Sep 17 00:00:00 2001
From: Sebastian <sebasjm@gmail.com>
Date: Fri, 1 Jul 2022 18:05:51 -0300
Subject: accept tips

---
 .../main/java/net/taler/wallet/tip/TipManager.kt   | 124 +++++++++++++++++++++
 1 file changed, 124 insertions(+)
 create mode 100644 wallet/src/main/java/net/taler/wallet/tip/TipManager.kt

(limited to 'wallet/src/main/java/net/taler/wallet/tip/TipManager.kt')

diff --git a/wallet/src/main/java/net/taler/wallet/tip/TipManager.kt b/wallet/src/main/java/net/taler/wallet/tip/TipManager.kt
new file mode 100644
index 0000000..855feb0
--- /dev/null
+++ b/wallet/src/main/java/net/taler/wallet/tip/TipManager.kt
@@ -0,0 +1,124 @@
+/*
+ * 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.tip
+
+import android.util.Log
+import androidx.annotation.UiThread
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.MutableLiveData
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.launch
+import net.taler.common.Amount
+import net.taler.common.Timestamp
+import net.taler.wallet.TAG
+import net.taler.wallet.backend.WalletBackendApi
+import net.taler.wallet.backend.TalerErrorInfo
+import net.taler.wallet.tip.PrepareTipResponse.TipPossibleResponse
+import net.taler.wallet.tip.PrepareTipResponse.AlreadyAcceptedResponse
+
+sealed class TipStatus {
+    object None : TipStatus()
+    object Loading : TipStatus()
+    data class Prepared(
+        val walletTipId: String,
+        val merchantBaseUrl: String,
+        val exchangeBaseUrl: String,
+        val expirationTimestamp: Timestamp,
+        val tipAmountRaw: Amount,
+        val tipAmountEffective: Amount,
+    ) : TipStatus()
+
+    data class AlreadyAccepted(
+        val walletTipId: String,
+    ) : TipStatus()
+
+    // TODO bring user to fulfilment URI
+    data class Error(val error: String) : TipStatus()
+    data class Success(val currency: String) : TipStatus()
+}
+
+class TipManager(
+    private val api: WalletBackendApi,
+    private val scope: CoroutineScope,
+) {
+
+    private val mTipStatus = MutableLiveData<TipStatus>(TipStatus.None)
+    internal val tipStatus: LiveData<TipStatus> = mTipStatus
+
+    @UiThread
+    fun prepareTip(url: String) = scope.launch {
+        mTipStatus.value = TipStatus.Loading
+        api.request("prepareTip", PrepareTipResponse.serializer()) {
+            put("talerTipUri", url)
+        }.onError {
+            handleError("prepareTip", it)
+        }.onSuccess { response ->
+            mTipStatus.value = when (response) {
+                is TipPossibleResponse -> response.toTipStatusPrepared()
+                is AlreadyAcceptedResponse -> TipStatus.AlreadyAccepted(
+                    response.walletTipId
+                )
+            }
+        }
+    }
+
+    fun confirmTip(tipId: String, currency: String) = scope.launch {
+        api.request("acceptTip", ConfirmTipResult.serializer()) {
+            put("walletTipId", tipId)
+        }.onError {
+            handleError("acceptTip", it)
+        }.onSuccess {
+            mTipStatus.postValue(TipStatus.Success(currency))
+        }
+    }
+
+/*
+    @UiThread
+    fun abortTip() {
+        val ps = tipStatus.value
+        if (ps is TipStatus.Prepared) {
+            abortProposal(ps.walletTipId)
+        }
+        resetTipStatus()
+    }
+*/
+
+/*
+    internal fun abortProposal(proposalId: String) = scope.launch {
+        Log.i(TAG, "aborting proposal")
+        api.request<Unit>("abortProposal") {
+            put("proposalId", proposalId)
+        }.onError {
+            Log.e(TAG, "received error response to abortProposal")
+            handleError("abortProposal", it)
+        }.onSuccess {
+            mTipStatus.postValue(TipStatus.None)
+        }
+    }
+*/
+
+    @UiThread
+    fun resetTipStatus() {
+        mTipStatus.value = TipStatus.None
+    }
+
+    private fun handleError(operation: String, error: TalerErrorInfo) {
+        Log.e(TAG, "got $operation error result $error")
+        mTipStatus.value = TipStatus.Error(error.userFacingMsg)
+    }
+
+}
-- 
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