Use iOS 14 photo permission api (#154)

Sources/PermissionsSwiftUIPhoto/JMPhotoPermissionManager.swift

@@ -11,20 +11,54 @@ import CorePermissionsSwiftUI
 
 @available(iOS 13.0, tvOS 13.0, *)
 public extension PermissionManager {
-    ///Used to access the user's photo library
-    static let photo = JMPhotoPermissionManager()
+    ///Used to access the user's photo library before iOS 14
+    @available(iOS, deprecated, obsoleted: 100000, message: "Use 'authorizationStatus(for: )' instead after iOS 14.0.")
+    static let photo = JMPhotoPermissionManager(requestedAccessLevel: .legacy)
+
+    ///Used to read-only access the user's photo library
+    @available(iOS 14.0, *)
+    static let photoRead = JMPhotoPermissionManager(requestedAccessLevel: .writeOnly)
+
+    ///Used to read and write to the user's photo library
+    @available(iOS 14.0, *)
+    static let photoFull = JMPhotoPermissionManager(requestedAccessLevel: .full)
 }
 
 @available(iOS 13.0, tvOS 13.0, *)
 public final class JMPhotoPermissionManager: PermissionManager {
-
-
+    public init(requestedAccessLevel: AccessLevel = .legacy) {
+        self.requestedAccessLevel = requestedAccessLevel
+        if requestedAccessLevel == .legacy {
+            NSLog("[PermissionsSwiftUI]: WARNING! Using legacy calendar or reminder permission, which will NOT work in iOS 17 and always return denied due to Apple EventKit API changes. Learn more: https://developer.apple.com/documentation/eventkit/accessing_the_event_store")
+        }
+    }
+    public var requestedAccessLevel: AccessLevel
+
+    public enum AccessLevel {
+        case legacy
+        @available(iOS 14, *) case writeOnly
+        @available(iOS 14, *) case full
+    }
+
     public override var permissionType: PermissionType {
         .photo
     }
-    
+
     public override var authorizationStatus: AuthorizationStatus  {
-        switch PHPhotoLibrary.authorizationStatus(){
+        var result: PHAuthorizationStatus? = nil
+        switch requestedAccessLevel {
+        case .legacy:
+            result = PHPhotoLibrary.authorizationStatus()
+        case .full:
+            if #available(iOS 14, *) {
+                result = PHPhotoLibrary.authorizationStatus(for: .readWrite)
+            }
+        case .writeOnly:
+            if #available(iOS 14, *) {
+                result = PHPhotoLibrary.authorizationStatus(for: .addOnly)
+            }
+        }
+        switch result {
         case .authorized:
             return .authorized
         case .notDetermined:
@@ -35,22 +69,38 @@ public final class JMPhotoPermissionManager: PermissionManager {
             return .denied
         }
     }
-
-    var photoLibrary: PHPhotoLibrary.Type = PHPhotoLibrary.self
-    init(photoLibrary:PHPhotoLibrary.Type=PHPhotoLibrary.self){
-        self.photoLibrary = photoLibrary
-    }
+
     override public func requestPermission(completion: @escaping (Bool, Error?) -> Void) {
-        photoLibrary.requestAuthorization { authStatus in
-            switch authStatus {
-            case .authorized:
-                completion(true, nil)
-            case .limited:
-                completion(true, nil)
-            default:
-                completion(false, nil)
+        switch requestedAccessLevel {
+        case .legacy:
+            PHPhotoLibrary.requestAuthorization { status in
+                self.handleAuthorizationResult(status, completion: completion)
+            }
+        case .full:
+            if #available(iOS 14, *) {
+                PHPhotoLibrary.requestAuthorization(for: .readWrite) { status in
+                    self.handleAuthorizationResult(status, completion: completion)
+                }
+            }
+        case .writeOnly:
+            if #available(iOS 14, *) {
+                PHPhotoLibrary.requestAuthorization(for: .addOnly) { status in
+                    self.handleAuthorizationResult(status, completion: completion)
+                }
             }
+        default:
+            completion(false, nil)
+        }
+    }
+
+    private func handleAuthorizationResult(_ status: PHAuthorizationStatus, completion: @escaping (Bool, Error?) -> Void) {
+        switch status {
+        case .authorized, .limited:
+            completion(true, nil)
+        default:
+            completion(false, nil)
         }
     }
+
 }