From e6b210030da617f264fda02aacb51242db03be56 Mon Sep 17 00:00:00 2001
From: Christian Schneppe <christian@pix-art.de>
Date: Tue, 24 Apr 2018 21:52:01 +0200
Subject: code cleanup in AxolotlService.fetchDeviceIds()

---
 .../messenger/crypto/axolotl/AxolotlService.java   | 54 ++++++++++++----------
 1 file changed, 29 insertions(+), 25 deletions(-)

diff --git a/src/main/java/de/pixart/messenger/crypto/axolotl/AxolotlService.java b/src/main/java/de/pixart/messenger/crypto/axolotl/AxolotlService.java
index 010dbbceb..0cc823ba3 100644
--- a/src/main/java/de/pixart/messenger/crypto/axolotl/AxolotlService.java
+++ b/src/main/java/de/pixart/messenger/crypto/axolotl/AxolotlService.java
@@ -978,7 +978,8 @@ public class AxolotlService implements OnAdvancedStreamFeaturesLoaded {
         fetchDeviceIds(jid, null);
     }
 
-    public void fetchDeviceIds(final Jid jid, OnDeviceIdsFetched callback) {
+    private void fetchDeviceIds(final Jid jid, OnDeviceIdsFetched callback) {
+        IqPacket packet;
         synchronized (this.fetchDeviceIdsMap) {
             List<OnDeviceIdsFetched> callbacks = this.fetchDeviceIdsMap.get(jid);
             if (callbacks != null) {
@@ -986,6 +987,7 @@ public class AxolotlService implements OnAdvancedStreamFeaturesLoaded {
                     callbacks.add(callback);
                 }
                 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": fetching device ids for " + jid + " already running. adding callback");
+                packet = null;
             } else {
                 callbacks = new ArrayList<>();
                 if (callback != null) {
@@ -993,35 +995,37 @@ public class AxolotlService implements OnAdvancedStreamFeaturesLoaded {
                 }
                 this.fetchDeviceIdsMap.put(jid, callbacks);
                 Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": fetching device ids for " + jid);
-                IqPacket packet = mXmppConnectionService.getIqGenerator().retrieveDeviceIds(jid);
-                mXmppConnectionService.sendIqPacket(account, packet, (account, response) -> {
-                    synchronized (fetchDeviceIdsMap) {
-                        List<OnDeviceIdsFetched> callbacks1 = fetchDeviceIdsMap.remove(jid);
-                        if (response.getType() == IqPacket.TYPE.RESULT) {
-                            fetchDeviceListStatus.put(jid, true);
-                            Element item = mXmppConnectionService.getIqParser().getItem(response);
-                            Set<Integer> deviceIds = mXmppConnectionService.getIqParser().deviceIds(item);
-                            registerDevices(jid, deviceIds);
-                            if (callbacks1 != null) {
-                                for (OnDeviceIdsFetched callback1 : callbacks1) {
-                                    callback1.fetched(jid, deviceIds);
-                                }
+                packet = mXmppConnectionService.getIqGenerator().retrieveDeviceIds(jid);
+            }
+        }
+        if (packet != null) {
+            mXmppConnectionService.sendIqPacket(account, packet, (account, response) -> {
+                synchronized (fetchDeviceIdsMap) {
+                    List<OnDeviceIdsFetched> callbacks = fetchDeviceIdsMap.remove(jid);
+                    if (response.getType() == IqPacket.TYPE.RESULT) {
+                        fetchDeviceListStatus.put(jid, true);
+                        Element item = mXmppConnectionService.getIqParser().getItem(response);
+                        Set<Integer> deviceIds = mXmppConnectionService.getIqParser().deviceIds(item);
+                        registerDevices(jid, deviceIds);
+                        if (callbacks != null) {
+                            for (OnDeviceIdsFetched c : callbacks) {
+                                c.fetched(jid, deviceIds);
                             }
+                        }
+                    } else {
+                        if (response.getType() == IqPacket.TYPE.TIMEOUT) {
+                            fetchDeviceListStatus.remove(jid);
                         } else {
-                            if (response.getType() == IqPacket.TYPE.TIMEOUT) {
-                                fetchDeviceListStatus.remove(jid);
-                            } else {
-                                fetchDeviceListStatus.put(jid, false);
-                            }
-                            if (callbacks1 != null) {
-                                for (OnDeviceIdsFetched callback1 : callbacks1) {
-                                    callback1.fetched(jid, null);
-                                }
+                            fetchDeviceListStatus.put(jid, false);
+                        }
+                        if (callbacks != null) {
+                            for (OnDeviceIdsFetched c : callbacks) {
+                                c.fetched(jid, null);
                             }
                         }
                     }
-                });
-            }
+                }
+            });
         }
     }
 
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