Shift async responsibility to ProductManager (#360)

SandboxChecker should not care about what actor is running on.

Better than #356

Passepartout.xcodeproj/xcshareddata/xcschemes/Passepartout.xcscheme

@@ -172,7 +172,7 @@
       <EnvironmentVariables>
          <EnvironmentVariable
             key = "APP_TYPE"
-            value = "0"
+            value = "2"
             isEnabled = "YES">
          </EnvironmentVariable>
          <EnvironmentVariable

Passepartout/App/Managers/ProductManager.swift

@@ -53,10 +53,6 @@ final class ProductManager: NSObject, ObservableObject {
 
     private let overriddenAppType: AppType?
 
-    private let sandboxChecker: SandboxChecker
-
-    private var subscriptions: Set<AnyCancellable>
-
     let buildProducts: BuildProducts
 
     let didRefundProducts = PassthroughSubject<Void, Never>()
@@ -95,10 +91,7 @@ final class ProductManager: NSObject, ObservableObject {
     init(overriddenAppType: AppType?, buildProducts: BuildProducts) {
         self.overriddenAppType = overriddenAppType
         self.buildProducts = buildProducts
-
         appType = .undefined
-        sandboxChecker = SandboxChecker(bundle: .main)
-        subscriptions = []
 
         products = []
         inApp = InApp()
@@ -113,18 +106,12 @@ final class ProductManager: NSObject, ObservableObject {
         SKPaymentQueue.default().add(self)
         refreshProducts()
 
-        sandboxChecker.$isBeta
-            .dropFirst() // ignore initial value
-            .sink { [weak self] in
-                guard let self else {
-                    return
-                }
-                self.appType = overriddenAppType ?? ($0 ? .beta : .freemium)
-                pp_log.info("App type: \(self.appType)")
-                self.reloadReceipt()
-            }.store(in: &subscriptions)
-
-        sandboxChecker.check()
+        Task {
+            let isBeta = await SandboxChecker().isBeta
+            appType = overriddenAppType ?? (isBeta ? .beta : .freemium)
+            pp_log.info("App type: \(appType)")
+            reloadReceipt()
+        }
     }
 
     deinit {

PassepartoutLibrary/Sources/PassepartoutCore/Reusable/SandboxChecker.swift

@@ -28,25 +28,23 @@ import Foundation
 // https://stackoverflow.com/a/32238344/784615
 // https://gist.github.com/lukaskubanek/cbfcab29c0c93e0e9e0a16ab09586996
 
-public final class SandboxChecker: ObservableObject {
-    private let bundle: Bundle
-
-    @Published public private(set) var isBeta = false
-
-    public init(bundle: Bundle) {
-        self.bundle = bundle
+public final actor SandboxChecker: ObservableObject {
+    public init() {
     }
 
-    @MainActor
-    public func check() {
-        Task {
-            isBeta = await isBetaBuild()
-            pp_log.info("Beta build: \(isBeta)")
-        }
+    public var isBeta: Bool {
+        let isBeta = verifyBetaBuild()
+        pp_log.info("Beta build: \(isBeta)")
+        return isBeta
     }
+}
+
+// MARK: Shared
+
+private extension SandboxChecker {
 
     // IMPORTANT: check Mac first because os(iOS) holds true for Catalyst
-    private func isBetaBuild() async -> Bool {
+    func verifyBetaBuild() -> Bool {
         #if targetEnvironment(macCatalyst) || os(macOS)
         isMacTestFlightBuild
         #elseif os(iOS)
@@ -55,6 +53,10 @@ public final class SandboxChecker: ObservableObject {
         false
         #endif
     }
+
+    var bundle: Bundle {
+        .main
+    }
 }
 
 // MARK: iOS
@@ -70,8 +72,6 @@ private extension SandboxChecker {
 // MARK: macOS
 
 #if targetEnvironment(macCatalyst) || os(macOS)
-import Security
-
 private extension SandboxChecker {
     var isMacTestFlightBuild: Bool {
         var status = noErr