Check power level before starting live sharing location

Author: NicolasBuquet

RiotSwiftUI/Modules/LocationSharing/StartLocationSharing/Coordinator/LocationSharingCoordinator.swift

@@ -166,17 +166,22 @@ final class LocationSharingCoordinator: Coordinator, Presentable {
 
     // Check if user can send beacon info state event
     private func canShareLiveLocation() -> Bool {
-        guard let myUserId = parameters.roomDataSource.mxSession.myUserId else {
+        guard let myUserId = parameters.roomDataSource.mxSession.myUserId,
+              let roomPowerLevels = parameters.roomDataSource.roomState.powerLevels,
+              let userPowerLevel = RoomPowerLevel(rawValue: parameters.roomDataSource.roomState.powerLevels.powerLevelOfUser(withUserID: myUserId)) else {
             return false
         }
 
-        let userPowerLevelRawValue = parameters.roomDataSource.roomState.powerLevels.powerLevelOfUser(withUserID: myUserId)
-        
-        guard let userPowerLevel = RoomPowerLevel(rawValue: userPowerLevelRawValue) else {
-            return false
-        }
-        
-        return userPowerLevel.rawValue >= RoomPowerLevel.moderator.rawValue
+        // Should call `minimumPowerLevelForSendingStateEvent(_ eventType: MXEventType) -> Int` from `MatrixSDK:MXRoomPowerLevels.swift`
+        // but can't because it is inaccessible due to 'internal' protection level
+        //
+        // let liveSharingPowerLevel = parameters.roomDataSource.roomState.powerLevels.minimumPowerLevelForSendingStateEvent(.beaconInfo)
+        //
+ 
+        // Get live sharing power level from stable value, then unstable value and fallback on default value.
+        let liveSharingPowerLevel = (roomPowerLevels.events[kMXEventTypeStringBeaconInfo] ?? roomPowerLevels.events[kMXEventTypeStringBeaconInfoMSC3672]) as? Int ?? roomPowerLevels.stateDefault
+
+        return userPowerLevel.rawValue >= liveSharingPowerLevel
     }
 
     private func showLabFlagPromotionIfNeeded(completion: @escaping ((Bool) -> Void)) {