From ff54c06ebd85b7ca9b763b33855dbe2397d61553 Mon Sep 17 00:00:00 2001
From: Dave Snabel-Caunt <dave.snabel-caunt@thetradedesk.com>
Date: Mon, 4 Nov 2024 12:41:52 +0000
Subject: [PATCH] Check iOS 13 is available at runtime

---
 .../UID2GMAPlugin/EUIDGMAMediationAdapter.swift    |  9 ++++++++-
 .../OperatingSystemUnsupportedError.swift          | 14 ++++++++++++++
 .../UID2GMAPlugin/UID2GMAMediationAdapter.swift    |  9 ++++++++-
 3 files changed, 30 insertions(+), 2 deletions(-)
 create mode 100644 Sources/UID2GMAPlugin/OperatingSystemUnsupportedError.swift

diff --git a/Sources/UID2GMAPlugin/EUIDGMAMediationAdapter.swift b/Sources/UID2GMAPlugin/EUIDGMAMediationAdapter.swift
index 2326c45..495947f 100644
--- a/Sources/UID2GMAPlugin/EUIDGMAMediationAdapter.swift
+++ b/Sources/UID2GMAPlugin/EUIDGMAMediationAdapter.swift
@@ -20,7 +20,10 @@ class EUIDGMAMediationAdapter: NSObject {
 extension EUIDGMAMediationAdapter: GADRTBAdapter {
 
     static func setUpWith(_ configuration: GADMediationServerConfiguration, completionHandler: @escaping GADMediationAdapterSetUpCompletionBlock) {
-
+        guard #available(iOS 13, *) else {
+            completionHandler(OperatingSystemUnsupportedError())
+            return
+        }
         // Ensure UID2Manager has started
         _ = EUIDManager.shared
 
@@ -28,6 +31,10 @@ extension EUIDGMAMediationAdapter: GADRTBAdapter {
     }
 
     func collectSignals(for params: GADRTBRequestParameters, completionHandler: @escaping GADRTBSignalCompletionHandler) {
+        guard #available(iOS 13, *) else {
+            completionHandler(nil, OperatingSystemUnsupportedError())
+            return
+        }
         Task {
             guard let advertisingToken = await EUIDManager.shared.getAdvertisingToken() else {
                 completionHandler(nil, AdvertisingTokenNotFoundError())
diff --git a/Sources/UID2GMAPlugin/OperatingSystemUnsupportedError.swift b/Sources/UID2GMAPlugin/OperatingSystemUnsupportedError.swift
new file mode 100644
index 0000000..6edea26
--- /dev/null
+++ b/Sources/UID2GMAPlugin/OperatingSystemUnsupportedError.swift
@@ -0,0 +1,14 @@
+//
+//  OperatingSystemUnsupportedError.swift
+//
+
+import Foundation
+
+/// Adapter called on an unsupported operating system version i.e. lower than UID2's deployment target.
+@objc(UID2GMAOperatingSystemUnsupported)
+public final class OperatingSystemUnsupportedError: NSError, @unchecked Sendable {
+
+    convenience init() {
+        self.init(domain: "UID", code: 2)
+    }
+}
diff --git a/Sources/UID2GMAPlugin/UID2GMAMediationAdapter.swift b/Sources/UID2GMAPlugin/UID2GMAMediationAdapter.swift
index 54045ab..07c1fd4 100644
--- a/Sources/UID2GMAPlugin/UID2GMAMediationAdapter.swift
+++ b/Sources/UID2GMAPlugin/UID2GMAMediationAdapter.swift
@@ -23,7 +23,10 @@ class UID2GMAMediationAdapter: NSObject {
 extension UID2GMAMediationAdapter: GADRTBAdapter {
 
     static func setUpWith(_ configuration: GADMediationServerConfiguration, completionHandler: @escaping GADMediationAdapterSetUpCompletionBlock) {
-
+        guard #available(iOS 13, *) else {
+            completionHandler(OperatingSystemUnsupportedError())
+            return
+        }
         // Ensure UID2Manager has started
         _ = UID2Manager.shared
 
@@ -31,6 +34,10 @@ extension UID2GMAMediationAdapter: GADRTBAdapter {
     }
         
     func collectSignals(for params: GADRTBRequestParameters, completionHandler: @escaping GADRTBSignalCompletionHandler) {
+        guard #available(iOS 13, *) else {
+            completionHandler(nil, OperatingSystemUnsupportedError())
+            return
+        }
         Task {
             guard let advertisingToken = await UID2Manager.shared.getAdvertisingToken() else {
                 completionHandler(nil, AdvertisingTokenNotFoundError())