fix: Fix torch not staying on while recording (#2249)

* fix: Fix `zoom` on native gesture

* fix: Control `torch` from JS side

* Update CameraView+RecordVideo.kt

* Update CameraView+Zoom.swift

package/android/src/main/java/com/mrousavy/camera/CameraView+RecordVideo.kt

@@ -9,9 +9,7 @@ import com.mrousavy.camera.core.MicrophonePermissionError
 import com.mrousavy.camera.core.RecorderError
 import com.mrousavy.camera.core.RecordingSession
 import com.mrousavy.camera.core.code
-import com.mrousavy.camera.types.Flash
 import com.mrousavy.camera.types.RecordVideoOptions
-import com.mrousavy.camera.types.Torch
 import com.mrousavy.camera.utils.makeErrorMap
 import java.util.*
 
@@ -23,14 +21,6 @@ suspend fun CameraView.startRecording(options: RecordVideoOptions, onRecordCallb
     }
   }
 
-  val enableFlash = options.flash == Flash.ON
-  if (enableFlash) {
-    // overrides current torch mode value to enable flash while recording
-    cameraSession.configure { config ->
-      config.torch = Torch.ON
-    }
-  }
-
   val callback = { video: RecordingSession.Video ->
     val map = Arguments.createMap()
     map.putString("path", video.path)
@@ -57,8 +47,4 @@ suspend fun CameraView.resumeRecording() {
 @SuppressLint("RestrictedApi")
 suspend fun CameraView.stopRecording() {
   cameraSession.stopRecording()
-  // Set torch back to it's original value in case we just used it as a flash for the recording.
-  cameraSession.configure { config ->
-    config.torch = torch
-  }
 }

package/ios/CameraView+RecordVideo.swift

@@ -18,13 +18,6 @@ extension CameraView: AVCaptureVideoDataOutputSampleBufferDelegate, AVCaptureAud
     do {
       let options = try RecordVideoOptions(fromJSValue: options)
 
-      // If flash is on, just enable torch
-      if options.flash != .off {
-        cameraSession.configure { config in
-          config.torch = options.flash
-        }
-      }
-
       // Start Recording with success and error callbacks
       cameraSession.startRecording(
         options: options,
@@ -47,11 +40,6 @@ extension CameraView: AVCaptureVideoDataOutputSampleBufferDelegate, AVCaptureAud
 
   func stopRecording(promise: Promise) {
     cameraSession.stopRecording(promise: promise)
-
-    // If flash was used, we had the torch enabled. Now set it back to it's original state.
-    cameraSession.configure { config in
-      config.torch = try Torch(jsValue: torch)
-    }
   }
 
   func pauseRecording(promise: Promise) {

package/ios/CameraView+Zoom.swift

@@ -18,10 +18,9 @@ extension CameraView {
       return
     }
 
-    // Update zoom on Camera
-    cameraSession.configure { configuration in
-      configuration.zoom = scale
-    }
+    // Update zoom React prop
+    zoom = NSNumber(value: scale)
+    didSetProps(["zoom"])
   }
 
   func addPinchGestureRecognizer() {

package/ios/Core/CameraSession+Video.swift

@@ -43,14 +43,6 @@ extension CameraSession {
               self.deactivateAudioSession()
             }
           }
-          // Reset flash
-          if options.flash != .off {
-            // Set torch mode back to what it was before if we used it for the video flash.
-            self.configure { config in
-              let torch = self.configuration?.torch ?? .off
-              config.torch = torch
-            }
-          }
         }
 
         self.isRecording = false

package/src/Camera.tsx

@@ -40,6 +40,9 @@ type NativeRecordVideoOptions = Omit<RecordVideoOptions, 'onRecordingError' | 'o
   videoBitRateMultiplier?: number
 }
 type RefType = React.Component<NativeCameraViewProps> & Readonly<NativeMethods>
+interface CameraState {
+  isRecordingWithFlash: boolean
+}
 //#endregion
 
 //#region Camera Component
@@ -71,7 +74,7 @@ type RefType = React.Component<NativeCameraViewProps> & Readonly<NativeMethods>
  *
  * @component
  */
-export class Camera extends React.PureComponent<CameraProps> {
+export class Camera extends React.PureComponent<CameraProps, CameraState> {
   /** @internal */
   static displayName = 'Camera'
   /** @internal */
@@ -90,6 +93,9 @@ export class Camera extends React.PureComponent<CameraProps> {
     this.onCodeScanned = this.onCodeScanned.bind(this)
     this.ref = React.createRef<RefType>()
     this.lastFrameProcessor = undefined
+    this.state = {
+      isRecordingWithFlash: false,
+    }
   }
 
   private get handle(): number {
@@ -163,6 +169,13 @@ export class Camera extends React.PureComponent<CameraProps> {
     if (typeof onRecordingError !== 'function' || typeof onRecordingFinished !== 'function')
       throw new CameraRuntimeError('parameter/invalid-parameter', 'The onRecordingError or onRecordingFinished functions were not set!')
 
+    if (options.flash === 'on') {
+      // Enable torch for video recording
+      this.setState({
+        isRecordingWithFlash: true,
+      })
+    }
+
     const nativeOptions: NativeRecordVideoOptions = passThruOptions
     if (typeof videoBitRate === 'number') {
       // If the user passed an absolute number as a bit-rate, we just use this as a full override.
@@ -173,6 +186,13 @@ export class Camera extends React.PureComponent<CameraProps> {
     }
 
     const onRecordCallback = (video?: VideoFile, error?: CameraCaptureError): void => {
+      if (this.state.isRecordingWithFlash) {
+        // disable torch again if it was enabled
+        this.setState({
+          isRecordingWithFlash: false,
+        })
+      }
+
       if (error != null) return onRecordingError(error)
       if (video != null) return onRecordingFinished(video)
     }
@@ -450,12 +470,14 @@ export class Camera extends React.PureComponent<CameraProps> {
     }
 
     const shouldEnableBufferCompression = props.video === true && frameProcessor == null
+    const torch = this.state.isRecordingWithFlash ? 'on' : props.torch
 
     return (
       <NativeCameraView
         {...props}
         cameraId={device.id}
         ref={this.ref}
+        torch={torch}
         onViewReady={this.onViewReady}
         onInitialized={this.onInitialized}
         onCodeScanned={this.onCodeScanned}