feat: gate download behind development certificate on iOS

apps/expo/modules/check-ios-certificate/ios/CheckIosCertificateModule.swift

@@ -0,0 +1,37 @@
+import ExpoModulesCore
+
+public class CheckIosCertificateModule: Module {
+    // Each module class must implement the definition function. The definition consists of components
+    // that describes the module's functionality and behavior.
+    // See https://docs.expo.dev/modules/module-api for more details about available components.
+    public func definition() -> ModuleDefinition {
+        // Sets the name of the module that JavaScript code will use to refer to the module. Takes a string as an argument.
+        // Can be inferred from module's class name, but it's recommended to set it explicitly for clarity.
+        // The module will be accessible from `requireNativeModule('CheckIosCertificate')` in JavaScript.
+        Name("CheckIosCertificate")
+
+        // Defines a JavaScript synchronous function that runs the native code on the JavaScript thread.
+        Function("isDevelopmentProvisioningProfile") {
+            #if targetEnvironment(simulator)
+            // Running on the Simulator
+            return true
+            #else
+            // Check for provisioning profile for non-Simulator execution
+            guard let filePath = Bundle.main.path(forResource: "embedded", ofType: "mobileprovision") else {
+                return false
+            }
+
+            let fileURL = URL(fileURLWithPath: filePath)
+            do {
+                let data = try String(contentsOf: fileURL, encoding: .ascii)
+                let cleared = data.components(separatedBy: .whitespacesAndNewlines).joined()
+                return cleared.contains("<key>get-task-allow</key><true/>")
+            } catch {
+                // Handling error if the file read fails
+                print("Error reading provisioning profile: \(error)")
+                return false
+            }
+            #endif
+        }
+    }
+}