From 4818210a6373261dcc122bb3c699b303ee5bd12f Mon Sep 17 00:00:00 2001
From: Madhur Garg <madhurgarg96@gmail.com>
Date: Sun, 11 Aug 2019 23:09:51 +0530
Subject: Disabled the history of MUC(from 0045) if the MUC supports MAM.

---
 poezio/multiuserchat.py | 32 ++++++++++++++++++++++----------
 1 file changed, 22 insertions(+), 10 deletions(-)

diff --git a/poezio/multiuserchat.py b/poezio/multiuserchat.py
index a58883c6..ee596a0f 100644
--- a/poezio/multiuserchat.py
+++ b/poezio/multiuserchat.py
@@ -13,6 +13,7 @@ slix plugin
 from xml.etree import cElementTree as ET
 
 from poezio.common import safeJID
+from poezio import mam
 from slixmpp import JID
 from slixmpp.exceptions import IqError, IqTimeout
 import logging
@@ -118,16 +119,27 @@ def join_groupchat(core,
         passelement = ET.Element('password')
         passelement.text = passwd
         x.append(passelement)
-    if seconds is not None:
-        history = ET.Element('{http://jabber.org/protocol/muc}history')
-        history.attrib['seconds'] = str(seconds)
-        x.append(history)
-    stanza.append(x)
-    core.events.trigger('joining_muc', stanza)
-    to = stanza["to"]
-    stanza.send()
-    xmpp.plugin['xep_0045'].rooms[jid] = {}
-    xmpp.plugin['xep_0045'].our_nicks[jid] = to.resource
+    def on_disco(iq):
+        if 'urn:xmpp:mam:2' in iq['disco_info'].get_features():
+            history = ET.Element('{http://jabber.org/protocol/muc}history')
+            history.attrib['seconds'] = str(0)
+            x.append(history)
+            mam.mam_scroll(core.tabs.current_tab)
+        elif seconds is not None:
+            history = ET.Element('{http://jabber.org/protocol/muc}history')
+            history.attrib['seconds'] = str(seconds)
+            x.append(history)
+        stanza.append(x)
+        core.events.trigger('joining_muc', stanza)
+        to = stanza["to"]
+        stanza.send()
+        xmpp.plugin['xep_0045'].rooms[jid] = {}
+        xmpp.plugin['xep_0045'].our_nicks[jid] = to.resource
+
+    try:
+        xmpp.plugin['xep_0030'].get_info(jid=jid, callback=on_disco)
+    except (IqError, IqTimeout):
+        return core.information('Failed to retrieve messages', 'Error')
 
 
 def leave_groupchat(xmpp, jid, own_nick, msg):
-- 
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