chore(ios): consolidate optional argument standard (#1738)

* chore(ios): consolidate optional argument standard

mark all optional iOS arguments as `var <name>: Type?`, following the pattern described in the documentation: https://v2.tauri.app/develop/plugins/develop-mobile/#ios

* chore: add missing Info.plist to example

examples/api/src-tauri/Info.plist

@@ -1,10 +1,12 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
-<dict>
+	<dict>
 		<key>NSCameraUsageDescription</key>
 		<string>Request camera access for WebRTC</string>
 		<key>NSMicrophoneUsageDescription</key>
 		<string>Request microphone access for WebRTC</string>
-</dict>
+		<key>NSFaceIDUsageDescription</key>
+		<string>Authenticate with biometrics</string>
+	</dict>
 </plist>

examples/api/src-tauri/gen/apple/api_iOS/Info.plist

@@ -40,6 +40,8 @@
 		<string>UIInterfaceOrientationLandscapeLeft</string>
 		<string>UIInterfaceOrientationLandscapeRight</string>
 	</array>
+	<key>NSFaceIDUsageDescription</key>
+	<string>Authenticate with biometrics</string>
 	<key>NSCameraUsageDescription</key>
 	<string>Request camera access for WebRTC</string>
 	<key>NSMicrophoneUsageDescription</key>

plugins/barcode-scanner/ios/Sources/BarcodeScannerPlugin.swift

@@ -9,8 +9,8 @@ import WebKit
 
 struct ScanOptions: Decodable {
   var formats: [SupportedFormat]?
-  let windowed: Bool?
+  var windowed: Bool?
-  let cameraDirection: String?
+  var cameraDirection: String?
 }
 
 enum SupportedFormat: String, CaseIterable, Decodable {

plugins/biometric/ios/Sources/BiometricPlugin.swift

@@ -25,8 +25,8 @@ class BiometricStatus {
 struct AuthOptions: Decodable {
   let reason: String
   var allowDeviceCredential: Bool?
-  let fallbackTitle: String?
+  var fallbackTitle: String?
-  let cancelTitle: String?
+  var cancelTitle: String?
 }
 
 class BiometricPlugin: Plugin {

plugins/geolocation/ios/Sources/GeolocationPlugin.swift

@@ -2,14 +2,14 @@
 // SPDX-License-Identifier: Apache-2.0
 // SPDX-License-Identifier: MIT
 
+import CoreLocation
 import SwiftRs
 import Tauri
 import UIKit
 import WebKit
-import CoreLocation
 
 class GetPositionArgs: Decodable {
-  let enableHighAccuracy: Bool?
+  var enableHighAccuracy: Bool?
 }
 
 class WatchPositionArgs: Decodable {
@@ -161,7 +161,9 @@ class GeolocationPlugin: Plugin, CLLocationManagerDelegate {
     }
   }
 
-  public func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
+  public func locationManager(
+    _ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]
+  ) {
     // Respond to all getCurrentPosition() calls.
     for request in self.positionRequests {
       // The capacitor plugin uses locations.first but .last should be the most current one
@@ -194,7 +196,9 @@ class GeolocationPlugin: Plugin, CLLocationManagerDelegate {
     }
   }
 
-  public func locationManager(_ manager: CLLocationManager, didChangeAuthorization status: CLAuthorizationStatus) {
+  public func locationManager(
+    _ manager: CLLocationManager, didChangeAuthorization status: CLAuthorizationStatus
+  ) {
     let requests = self.permissionRequests
     self.permissionRequests.removeAll()
 

plugins/nfc/ios/Sources/NfcPlugin.swift

@@ -16,24 +16,24 @@ enum ScanKind: Decodable {
 
 struct ScanOptions: Decodable {
   let kind: ScanKind
-  let keepSessionAlive: Bool?
+  var keepSessionAlive: Bool?
-  let message: String?
+  var message: String?
-  let successMessage: String?
+  var successMessage: String?
 }
 
 struct NDEFRecord: Decodable {
-  let format: UInt8?
+  var format: UInt8?
-  let kind: [UInt8]?
+  var kind: [UInt8]?
-  let identifier: [UInt8]?
+  var identifier: [UInt8]?
-  let payload: [UInt8]?
+  var payload: [UInt8]?
 }
 
 struct WriteOptions: Decodable {
-  let kind: ScanKind?
+  var kind: ScanKind?
   let records: [NDEFRecord]
-  let message: String?
+  var message: String?
-  let successMessage: String?
+  var successMessage: String?
-  let successfulReadMessage: String?
+  var successfulReadMessage: String?
 }
 
 enum TagProcessMode {

plugins/notification/ios/Sources/NotificationHandler.swift

@@ -34,7 +34,7 @@ public class NotificationHandler: NSObject, NotificationHandlerProtocol {
     try? self.plugin?.trigger("notification", data: notificationData)
 
     if let options = notificationsMap[notification.request.identifier] {
-      if options.silent {
+      if options.silent ?? false {
         return UNNotificationPresentationOptions.init(rawValue: 0)
       }
     }

plugins/notification/ios/Sources/NotificationPlugin.swift

@@ -34,13 +34,13 @@ enum ScheduleEveryKind: String, Decodable {
 }
 
 struct ScheduleInterval: Decodable {
-  let year: Int?
+  var year: Int?
-  let month: Int?
+  var month: Int?
-  let day: Int?
+  var day: Int?
-  let weekday: Int?
+  var weekday: Int?
-  let hour: Int?
+  var hour: Int?
-  let minute: Int?
+  var minute: Int?
-  let second: Int?
+  var second: Int?
 }
 
 enum NotificationSchedule: Decodable {
@@ -67,13 +67,13 @@ struct Notification: Decodable {
   var title: String
   var body: String?
   var extra: [String: String]?
-  let schedule: NotificationSchedule?
+  var schedule: NotificationSchedule?
-  let attachments: [NotificationAttachment]?
+  var attachments: [NotificationAttachment]?
-  let sound: String?
+  var sound: String?
-  let group: String?
+  var group: String?
-  let actionTypeId: String?
+  var actionTypeId: String?
-  let summary: String?
+  var summary: String?
-  var silent = false
+  var silent: Bool?
 }
 
 struct RemoveActiveNotification: Decodable {
@@ -130,19 +130,19 @@ struct Action: Decodable {
   var foreground: Bool?
   var destructive: Bool?
   var input: Bool?
-  let inputButtonTitle: String?
+  var inputButtonTitle: String?
-  let inputPlaceholder: String?
+  var inputPlaceholder: String?
 }
 
 struct ActionType: Decodable {
   let id: String
   let actions: [Action]
-  let hiddenPreviewsBodyPlaceholder: String?
+  var hiddenPreviewsBodyPlaceholder: String?
   var customDismissAction: Bool?
   var allowInCarPlay: Bool?
   var hiddenPreviewsShowTitle: Bool?
   var hiddenPreviewsShowSubtitle: Bool?
-  let hiddenBodyPlaceholder: String?
+  var hiddenBodyPlaceholder: String?
 }
 
 struct RegisterActionTypesArgs: Decodable {

shared/template/ios/Sources/ExamplePlugin.swift

@@ -8,7 +8,7 @@ import UIKit
 import WebKit
 
 class PingArgs: Decodable {
-  let value: String?
+  var value: String?
 }
 
 class ExamplePlugin: Plugin {