[Fix]CallSettings during reconnection (#808)

Author: ipavlidakis

CHANGELOG.md

@@ -5,6 +5,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 # Upcoming
 
 ### 🐞 Fixed
+- Fix an issue that was causing CallSettings misalignment during reconnection [#810](https://github.com/GetStream/stream-video-swift/pull/810)
 - Synchronize CallKit audioSession with the audioSession in the app. [#807](https://github.com/GetStream/stream-video-swift/pull/807)
 
 # [1.22.1](https://github.com/GetStream/stream-video-swift/releases/tag/1.22.1)

Sources/StreamVideo/WebRTC/v2/WebRTCStateAdapter.swift

@@ -340,6 +340,10 @@ actor WebRTCStateAdapter: ObservableObject, StreamAudioSessionAdapterDelegate {
         audioTracks = [:]
         videoTracks = [:]
         screenShareTracks = [:]
+
+        /// We set the initialCallSettings to the last activated CallSettings, in order to maintain the state
+        /// during reconnects.
+        initialCallSettings = callSettings
     }
 
     /// Restores screen sharing if an active session exists.

StreamVideoTests/WebRTC/v2/WebRTCStateAdapter_Tests.swift

@@ -516,6 +516,30 @@ final class WebRTCStateAdapter_Tests: XCTestCase, @unchecked Sendable {
         await assertEqualAsync(await subject.participantPins, pins)
     }
 
+    func test_cleanUpForReconnection_setsInitialCallSettingsToCallSettings() async throws {
+        let sfuStack = MockSFUStack()
+        let ownCapabilities = Set([OwnCapability.blockUsers])
+        let pins = [PinInfo(isLocal: true, pinnedAt: .init())]
+        let userId = String.unique
+        let currentParticipant = await CallParticipant.dummy(id: subject.sessionID)
+        let participants = [
+            userId: CallParticipant.dummy(id: userId),
+            currentParticipant.sessionId: currentParticipant
+        ]
+        try await prepare(
+            sfuStack: sfuStack,
+            ownCapabilities: ownCapabilities,
+            participants: participants,
+            participantPins: pins
+        )
+        await subject.set(callSettings: .init(cameraPosition: .back))
+
+        let sessionId = await subject.sessionID
+        await subject.cleanUpForReconnection()
+
+        await assertEqualAsync(await subject.callSettings.cameraPosition, .back)
+    }
+
     // MARK: - didAddTrack
 
     func test_didAddTrack_videoOfExistingParticipant_shouldAddTrack() async throws {