From 04d2bf1d6a5b6fae7672dccd29fc85e8b5145bd3 Mon Sep 17 00:00:00 2001
From: Jaiwanth <jaiwanth2011@gmail.com>
Date: Mon, 15 Feb 2021 20:52:19 +0530
Subject: [PATCH] Check whether user has permission to invite

Signed-off-by: Jaiwanth <jaiwanth2011@gmail.com>
---
 res/css/views/rooms/_RoomTile.scss      |  2 +-
 src/components/views/rooms/RoomTile.tsx | 22 +++++++++++++++++-----
 2 files changed, 18 insertions(+), 6 deletions(-)

diff --git a/res/css/views/rooms/_RoomTile.scss b/res/css/views/rooms/_RoomTile.scss
index 377b207490..72d29dfd4c 100644
--- a/res/css/views/rooms/_RoomTile.scss
+++ b/res/css/views/rooms/_RoomTile.scss
@@ -188,7 +188,7 @@ limitations under the License.
     .mx_RoomTile_iconSettings::before {
         mask-image: url('$(res)/img/element-icons/settings.svg');
     }
-    
+
     .mx_RoomTile_iconInvite::before {
         mask-image: url('$(res)/img/element-icons/room/invite.svg');
     }
diff --git a/src/components/views/rooms/RoomTile.tsx b/src/components/views/rooms/RoomTile.tsx
index 3a34a0daaa..f168235335 100644
--- a/src/components/views/rooms/RoomTile.tsx
+++ b/src/components/views/rooms/RoomTile.tsx
@@ -462,6 +462,16 @@ export default class RoomTile extends React.PureComponent<IProps, IState> {
             const isLowPriority = roomTags.includes(DefaultTagID.LowPriority);
             const lowPriorityLabel = _t("Low Priority");
 
+            const inRoom = this.props.room && this.props.room.getMyMembership() === "join";
+            const userId = MatrixClientPeg.get().getUserId();
+            let canInvite = inRoom;
+            const powerLevels = this.props.room.currentState
+                .getStateEvents("m.room.power_levels", "")
+                ?.getContent();
+            const me = this.props.room.getMember(userId);
+            if (powerLevels && me && powerLevels.invite > me.powerLevel) {
+                canInvite = false;
+            }
             contextMenu = <IconizedContextMenu
                 {...contextMenuBelow(this.state.generalMenuPosition)}
                 onFinished={this.onCloseGeneralMenu}
@@ -481,11 +491,13 @@ export default class RoomTile extends React.PureComponent<IProps, IState> {
                         label={lowPriorityLabel}
                         iconClassName="mx_RoomTile_iconArrowDown"
                     />
-                    <IconizedContextMenuOption
-                        onClick={this.onInviteClick}
-                        label={_t("Invite to this room")}
-                        iconClassName="mx_RoomTile_iconInvite"
-                    />
+                    {canInvite ? (
+                        <IconizedContextMenuOption
+                            onClick={this.onInviteClick}
+                            label={_t("Invite to this room")}
+                            iconClassName="mx_RoomTile_iconInvite"
+                        />
+                    ) : null}
                     <IconizedContextMenuOption
                         onClick={this.onOpenRoomSettings}
                         label={_t("Settings")}