Check rooms read-only state when presenting chat view.

Signed-off-by: Ivan Sein <ivan@nextcloud.com>

VideoCalls/NCChatViewController.m

@@ -158,6 +158,8 @@
         _stopReceivingNewMessages = NO;
         [[NCRoomsManager sharedInstance] startReceivingChatMessagesInRoom:_room];
     }
+    
+    [self checkRoomReadOnlyState];
 }
 
 - (void)viewWillDisappear:(BOOL)animated
@@ -248,6 +250,22 @@
     self.navigationItem.rightBarButtonItems = @[videoCallButton, voiceCallButton];
 }
 
+#pragma mark - User Interface
+
+- (void)checkRoomReadOnlyState
+{
+    if (_room.readOnlyState == NCRoomReadOnlyStateReadOnly) {
+        // Disable text input
+        self.textInputbar.userInteractionEnabled = NO;
+        self.textInputbar.textView.placeholder = @"This conversation is locked";
+        self.textInputbar.textView.backgroundColor = [UIColor colorWithRed:0.84 green:0.84 blue:0.84 alpha:1.0]; /*#d5d5d5*/
+        // Disable call buttons
+        for (UIBarButtonItem *button in self.navigationItem.rightBarButtonItems) {
+            [button setEnabled:NO];
+        }
+    }
+}
+
 #pragma mark - Utils
 
 - (NSString *)getTimeFromDate:(NSDate *)date

VideoCalls/NCRoom.h

@@ -24,6 +24,11 @@ typedef enum NCRoomNotificationLevel {
     kNCRoomNotificationLevelNever
 } NCRoomNotificationLevel;
 
+typedef enum NCRoomReadOnlyState {
+    NCRoomReadOnlyStateReadWrite = 0,
+    NCRoomReadOnlyStateReadOnly
+} NCRoomReadOnlyState;
+
 extern NSString * const NCRoomObjectTypeFile;
 extern NSString * const NCRoomObjectTypeSharePassword;
 
@@ -49,6 +54,7 @@ extern NSString * const NCRoomObjectTypeSharePassword;
 @property (nonatomic, assign) NCRoomNotificationLevel notificationLevel;
 @property (nonatomic, copy) NSString *objectType;
 @property (nonatomic, copy) NSString *objectId;
+@property (nonatomic, assign) NCRoomReadOnlyState readOnlyState;
 
 + (instancetype)roomWithDictionary:(NSDictionary *)roomDict;
 

VideoCalls/NCRoom.m

@@ -40,6 +40,7 @@ NSString * const NCRoomObjectTypeSharePassword  = @"share:password";
     room.notificationLevel = (NCRoomNotificationLevel)[[roomDict objectForKey:@"notificationLevel"] integerValue];
     room.objectType = [roomDict objectForKey:@"objectType"];
     room.objectId = [roomDict objectForKey:@"objectId"];
+    room.readOnlyState = (NCRoomReadOnlyState)[[roomDict objectForKey:@"readOnly"] integerValue];
     
     id name = [roomDict objectForKey:@"name"];
     if ([name isKindOfClass:[NSString class]]) {