From 9bd7af396c62f3862f6eb8ec615d665134737005 Mon Sep 17 00:00:00 2001
From: Michael Wolz <m.wolz@snapaddy.com>
Date: Wed, 26 Jun 2024 21:58:38 +0200
Subject: [PATCH] fix(ios): check focus / exposure mode support

---
 ios/Plugin/CameraController.swift | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/ios/Plugin/CameraController.swift b/ios/Plugin/CameraController.swift
index 3070888..eef7874 100644
--- a/ios/Plugin/CameraController.swift
+++ b/ios/Plugin/CameraController.swift
@@ -90,8 +90,15 @@ class CameraController: NSObject {
         do {
             try self.currentCamera?.lockForConfiguration()
             self.currentCamera?.videoZoomFactor = self.zoomFactor
-            self.currentCamera?.exposureMode = .continuousAutoExposure
-            self.currentCamera?.focusMode = .continuousAutoFocus
+            
+            if (self.currentCamera?.isFocusModeSupported(.continuousAutoFocus) ?? false) {
+                self.currentCamera?.focusMode = .continuousAutoFocus
+            }
+            
+            if (self.currentCamera?.isExposureModeSupported(.continuousAutoExposure) ?? false) {
+                self.currentCamera?.exposureMode = .continuousAutoExposure
+            }
+            
             self.currentCamera?.unlockForConfiguration()
             completionHandler(nil)
 
@@ -116,6 +123,8 @@ class CameraController: NSObject {
      */
     private func initializeCameraDevices(forPosition cameraPosition: CameraPosition) throws {
         if let rearCamera = AVCaptureDevice.default(.builtInTripleCamera, for: .video, position: .back) {
+            // Note that zoomFactor 2 "equals" the regular 1x zoom factor of the native iphone camera app
+            // 0.5x is videoZoomFactor 1. We do not want to use ultra wide angle by default so we set it to 2
             self.zoomFactor = 2
             self.rearCamera = rearCamera
         } else {