element-ios/Riot/Modules/Common/Recents/RecentsViewController+RoomInvite.swift

// 
// Copyright 2020 New Vector Ltd
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//

import Foundation

extension RecentsViewController {
    
    @objc func registerRoomChangeMembershipStateDataSourceNotifications() {
        NotificationCenter.default.addObserver(self,
                                               selector: #selector(roomChangeMembershipStateDataSourceDidChangeRoomMembershipState(notification:)),
                                               name: MXRoomMembershipStateDataSource.didChangeRoomMembershipStateNotification,
                                               object: nil)
                
    }
    
    @objc func unregisterRoomChangeMembershipStateDataSourceNotifications() {
        NotificationCenter.default.removeObserver(self, name: MXRoomMembershipStateDataSource.didChangeRoomMembershipStateNotification, object: nil)
    }
    
    @objc func roomChangeMembershipStateDataSourceDidChangeRoomMembershipState(notification: Notification) {
        self.recentsTableView.reloadData()
    }
    
    @objc func canShowRoomPreview(for room: MXRoom) -> Bool {
        // Do not show room preview if room is not direct
        guard room.isDirect else {
            return false
        }
        
        guard let session = self.mainSession else {
            return false
        }
        
        let changeMembershipState = session.getRoomMembershipChangeState(withRoomId: room.roomId)
        
        // NOTE: For the moment do not offer the possibility to show room preview when invitation action is in progress
        
        switch changeMembershipState {
        case .failedJoining, .failedLeaving:
            return false
        default:
            return true
        }
    }
}