Use environment variable to get test site id for IAP

Author: toupper

WooCommerce/Classes/ViewRelated/Hub Menu/HubMenu.swift

@@ -113,7 +113,7 @@ struct HubMenu: View {
             NavigationLink(destination: CouponListView(siteID: viewModel.siteID), isActive: $showingCoupons) {
                 EmptyView()
             }.hidden()
-            NavigationLink(destination: InAppPurchasesDebugView(siteID: viewModel.siteID), isActive: $showingIAPDebug) {
+            NavigationLink(destination: InAppPurchasesDebugView(), isActive: $showingIAPDebug) {
                 EmptyView()
             }.hidden()
             LazyNavigationLink(destination: viewModel.getReviewDetailDestination(), isActive: $viewModel.showingReviewDetail) {

WooCommerce/Classes/ViewRelated/InAppPurchases/InAppPurchasesDebugView.swift

@@ -4,7 +4,6 @@ import Yosemite
 
 @MainActor
 struct InAppPurchasesDebugView: View {
-    let siteID: Int64
     private let inAppPurchasesForWPComPlansManager = InAppPurchasesForWPComPlansManager()
     @State var products: [WPComPlanProduct] = []
     @State var entitledProductIDs: Set<String> = []
@@ -25,7 +24,8 @@ struct InAppPurchasesDebugView: View {
                     Text("No products")
                 } else if isPurchasing {
                     ActivityIndicator(isAnimating: .constant(true), style: .medium)
-                } else {
+                } else if let stringSiteID = ProcessInfo.processInfo.environment[Constants.siteIdEnvironmentVariableName],
+                          let siteID = Int64(stringSiteID) {
                     ForEach(products, id: \.id) { product in
                         Button(entitledProductIDs.contains(product.id) ? "Entitled: \(product.description)" : product.description) {
                             Task {
@@ -36,6 +36,10 @@ struct InAppPurchasesDebugView: View {
                             }
                         }
                     }
+                } else {
+                    Text("Couldn't retrieve site id to purchase product. " +
+                         "Please set your Int64 test site id to the Xcode environment variable with name \(Constants.siteIdEnvironmentVariableName).")
+                        .foregroundColor(.red)
                 }
             }
 
@@ -104,6 +108,10 @@ struct InAppPurchasesDebugView: View {
 
 struct InAppPurchasesDebugView_Previews: PreviewProvider {
     static var previews: some View {
-        InAppPurchasesDebugView(siteID: 0)
+        InAppPurchasesDebugView()
     }
 }
+
+private enum Constants {
+    static let siteIdEnvironmentVariableName = "iap-debug-site-id-purchase-param"
+}

WooCommerce/WooCommerce.xcodeproj/xcshareddata/xcschemes/WooCommerce.xcscheme

@@ -142,6 +142,11 @@
             value = ""
             isEnabled = "NO">
          </EnvironmentVariable>
+         <EnvironmentVariable
+            key = "iap-debug-site-id-purchase-param"
+            value = ""
+            isEnabled = "NO">
+         </EnvironmentVariable>
       </EnvironmentVariables>
    </LaunchAction>
    <ProfileAction