From c8f4363b37063de088f0a3c4910c887ea3acc394 Mon Sep 17 00:00:00 2001
From: NachoSoto <NachoSoto@users.noreply.github.com>
Date: Mon, 31 Jul 2023 12:01:55 +0200
Subject: [PATCH] `Paywalls`: pre-warm intro eligibility in background thread
 (#2925)

Follow-up to #2860.
Thanks to integration tests for catching this (#2123).

![image](https://github.com/RevenueCat/purchases-ios/assets/685609/cf1e8e32-5d5e-47ba-b900-394aa780d865)
---
 Sources/Purchasing/Purchases/Purchases.swift  | 27 +++++++++++--------
 Sources/Support/FrameworkDisambiguation.swift |  1 +
 2 files changed, 17 insertions(+), 11 deletions(-)

diff --git a/Sources/Purchasing/Purchases/Purchases.swift b/Sources/Purchasing/Purchases/Purchases.swift
index 71e6f24719..691cc8c8d5 100644
--- a/Sources/Purchasing/Purchases/Purchases.swift
+++ b/Sources/Purchasing/Purchases/Purchases.swift
@@ -1615,21 +1615,26 @@ private extension Purchases {
         self.offeringsManager.updateOfferingsCache(appUserID: self.appUserID,
                                                    isAppBackgrounded: isAppBackgrounded) { offerings in
             if let offering = offerings.value?.current, let paywall = offering.paywall {
-                let packageTypes = Set(paywall.config.packages)
-                let products: Set<String> = .init(
-                    offering.availablePackages
-                        .lazy
-                        .filter { packageTypes.contains($0.packageType) }
-                        .map(\.storeProduct.productIdentifier)
-                )
-
-                Logger.debug(Strings.eligibility.warming_up_eligibility_cache(paywall))
-
-                self.trialOrIntroPriceEligibilityChecker.checkEligibility(productIdentifiers: products) { _ in }
+                self.operationDispatcher.dispatchOnWorkerThread {
+                    self.warmUpEligibilityCache(offering: offering, paywall: paywall)
+                }
             }
         }
     }
 
+    private func warmUpEligibilityCache(offering: RCOffering, paywall: PaywallData) {
+        let packageTypes = Set(paywall.config.packages)
+        let products: Set<String> = .init(
+            offering.availablePackages
+                .lazy
+                .filter { packageTypes.contains($0.packageType) }
+                .map(\.storeProduct.productIdentifier)
+        )
+
+        Logger.debug(Strings.eligibility.warming_up_eligibility_cache(paywall))
+        self.trialOrIntroPriceEligibilityChecker.checkEligibility(productIdentifiers: products) { _ in }
+    }
+
 }
 
 // MARK: - Deprecations
diff --git a/Sources/Support/FrameworkDisambiguation.swift b/Sources/Support/FrameworkDisambiguation.swift
index 8a36af032a..e6e848f309 100644
--- a/Sources/Support/FrameworkDisambiguation.swift
+++ b/Sources/Support/FrameworkDisambiguation.swift
@@ -23,6 +23,7 @@
 
 typealias RCRefundRequestStatus = RefundRequestStatus
 typealias RCErrorCode = ErrorCode
+typealias RCOffering = Offering
 typealias RCStorefront = Storefront
 
 let RCDefaultLogHandler = defaultLogHandler