From d3d7844106a422bd54f899f210e54dcb43a26a4c Mon Sep 17 00:00:00 2001
From: kamathmanu <manuriddle@gmail.com>
Date: Tue, 3 Aug 2021 18:25:11 -0400
Subject: [PATCH] Made only unjoined rooms joinable

---
 src/RoomDirectoryModel.cpp | 13 ++++++++++++-
 src/RoomDirectoryModel.h   |  3 ++-
 2 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/src/RoomDirectoryModel.cpp b/src/RoomDirectoryModel.cpp
index 2a06e4d4..b206bf9e 100644
--- a/src/RoomDirectoryModel.cpp
+++ b/src/RoomDirectoryModel.cpp
@@ -4,6 +4,7 @@
 
 #include "RoomDirectoryModel.h"
 #include "ChatPage.h"
+#include "Cache.h"
 
 #include <algorithm>
 
@@ -68,6 +69,16 @@ RoomDirectoryModel::setSearchTerm(const QString &f)
         resetDisplayedData();
 }
 
+
+bool
+RoomDirectoryModel::canJoinRoom(const QByteArray &room)
+{
+	const auto &cache = cache::roomInfo();
+	const QString room_id (room);
+	const bool validRoom = !room_id.isNull() && !room_id.isEmpty();
+	return validRoom && !cache.contains(room_id);
+}
+
 std::vector<std::string>
 RoomDirectoryModel::getViasForRoom(const std::vector<std::string> &aliases)
 {
@@ -174,4 +185,4 @@ RoomDirectoryModel::displayRooms(std::vector<mtx::responses::PublicRoomsChunk> f
         }
 
         prevBatch_ = std::exchange(nextBatch_, next_batch);
-}
\ No newline at end of file
+}
diff --git a/src/RoomDirectoryModel.h b/src/RoomDirectoryModel.h
index ff571d93..7099ff00 100644
--- a/src/RoomDirectoryModel.h
+++ b/src/RoomDirectoryModel.h
@@ -56,6 +56,7 @@ public:
         }
         void fetchMore(const QModelIndex &) override;
 
+	Q_INVOKABLE bool canJoinRoom(const QByteArray &room);
         Q_INVOKABLE void joinRoom(const int &index = -1);
 
 signals:
@@ -84,4 +85,4 @@ private:
 
         std::vector<std::string> getViasForRoom(const std::vector<std::string> &room);
         void resetDisplayedData();
-};
\ No newline at end of file
+};