Add opt out of IDFA collection

* developing

* Add OptOut of idfa tracking

* Release 0.7.5

Author: ren6

ApphudSDK.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name             = 'ApphudSDK'
-  s.version          = '0.7.4'
+  s.version          = '0.7.5'
   s.summary          = 'Track and control iOS auto-renewable subscriptions.'
 
   s.description      = 'Track, control and analyze iOS auto-renewable subscriptions with Apphud.'
@@ -10,7 +10,7 @@ Pod::Spec.new do |s|
   s.source           = { :git => 'https://github.com/apphud/ApphudSDK.git', :tag => s.version.to_s }
   s.frameworks = 'StoreKit'
   s.ios.deployment_target = '11.2'
-  s.swift_version = '5.0'
+  s.swift_version = '4.2'
   s.source_files = 'Source/*.swift'
 
 end

Source/Apphud.swift

@@ -71,6 +71,13 @@ public typealias ApphudBoolCallback = ((Bool) -> Void)
 /// List of available attribution providers
 @objc public enum ApphudAttributionProvider : Int {
     case appsFlyer
+    
+    /**
+     Branch is implemented and doesn't required any additional code from Apphud SDK 
+     More details: https://docs.apphud.com/integrations/attribution/branch
+     
+     case branch
+     */
 }
 
 //MARK:- Initialization
@@ -342,4 +349,13 @@ final public class Apphud: NSObject {
     @objc public static func setIntegrationsTestMode(){
         ApphudInternal.shared.isIntegrationsTestMode = true
     }
+    
+    /**
+     Opt out of IDFA collection. Currently we collect IDFA to match users between Apphud and attribution platforms (AppsFlyer, Branch). If you don't use and not planning to use such services, you can call this method.
+     
+     __Note__: This method must be called before Apphud SDK initialization.
+     */
+    @objc public static func disableIDFACollection(){
+        ApphudUtils.shared.optOutOfIDFACollection = true
+    }
 }

Source/ApphudExtensions.swift

@@ -74,7 +74,7 @@ internal func currentDeviceParameters() -> [String : String]{
         params["idfv"] = idfv
     }
 
-    if let idfa = identifierForAdvertising() {
+    if !ApphudUtils.shared.optOutOfIDFACollection, let idfa = identifierForAdvertising(){
         params["idfa"] = idfa
     }
 

Source/ApphudInternal.swift

@@ -10,7 +10,7 @@ import Foundation
 import AdSupport
 import StoreKit
 
-let sdk_version = "0.7.4"
+let sdk_version = "0.7.5"
 
 final class ApphudInternal {
 
@@ -40,10 +40,15 @@ final class ApphudInternal {
 
     private var restoreSubscriptionCallback : (([ApphudSubscription]?) -> Void)?
 
+    private var allowInitialize = true
+    
     internal func initialize(apiKey: String, userID : String?, deviceIdentifier : String? = nil){
 
         apphudLog("Started Apphud SDK (\(sdk_version))", forceDisplay: true)
 
+        if !allowInitialize {return}
+        allowInitialize = false
+        
         ApphudStoreKitWrapper.shared.setupObserver()
 
         var deviceID = ApphudKeychain.loadDeviceID() 
@@ -79,6 +84,9 @@ final class ApphudInternal {
 
     private func continueToRegisteringUser(){
         createOrGetUser { success in
+            
+            self.allowInitialize = !success
+            
             if success {
                 apphudLog("User successfully registered")
                 self.performAllUserRegisteredBlocks()                

Source/ApphudUtils.swift

@@ -22,5 +22,7 @@ public class ApphudUtils : NSObject {
 
     internal static let shared = ApphudUtils()
     private(set) var isLoggingEnabled = false
+    
+    internal var optOutOfIDFACollection = false
 }
 

apphud.xcodeproj/project.pbxproj

@@ -395,7 +395,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = com.apphud.subscriptionstest;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE_SPECIFIER = "";
-				SWIFT_VERSION = 5.0;
+				SWIFT_VERSION = 4.2;
 				TARGETED_DEVICE_FAMILY = "1,2";
 			};
 			name = Debug;
@@ -416,7 +416,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = com.apphud.subscriptionstest;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE_SPECIFIER = "";
-				SWIFT_VERSION = 5.0;
+				SWIFT_VERSION = 4.2;
 				TARGETED_DEVICE_FAMILY = "1,2";
 			};
 			name = Release;