Allow injecting billing address

Sources/ProcessOut/Sources/UI/Modules/CardTokenization/Interactor/DefaultCardTokenizationInteractor.swift

@@ -91,7 +91,7 @@ final class DefaultCardTokenizationInteractor:
             expYear: cardExpirationFormatter.expirationYear(from: startedState.expiration.value) ?? 0,
             cvc: startedState.cvc.value,
             name: startedState.cardholderName.value,
-            contact: nil, // todo(andrii-vysotskyi): collect contact information
+            contact: delegate?.cardBillingAddress,
             preferredScheme: startedState.preferredScheme,
             metadata: nil // todo(andrii-vysotskyi): allow merchant to inject tokenization metadata
         )

Sources/ProcessOut/Sources/UI/Modules/CardTokenization/Interactor/POCardTokenizationDelegate.swift

@@ -10,13 +10,16 @@ public protocol POCardTokenizationDelegate: AnyObject {
 
     /// Allows delegate to additionally process tokenized card before ending module's lifecycle. For example
     /// it is possible to authorize an invoice or assign customer token.
-    /// Default implementation does nothing.
+    /// Default implementation immediately calls completion.
     func processTokenizedCard(card: POCard, completion: (Result<POCardTokenizationProcessAction?, Error>) -> Void)
 
     /// Allows to choose preferred scheme that will be selected by default based on issuer information. Default
     /// implementation returns primary scheme.
     func preferredScheme(issuerInformation: POCardIssuerInformation) -> String?
 
+    /// Implementation should return default card's billing address if any.
+    var cardBillingAddress: POContact? { get }
+
     /// Asks delegate whether user should be allowed to continue after failure or module should complete.
     /// Default implementation returns `true`.
     func shouldContinueTokenization(after failure: POFailure) -> Bool
@@ -33,6 +36,10 @@ extension POCardTokenizationDelegate {
         issuerInformation.scheme
     }
 
+    public var cardBillingAddress: POContact? {
+        nil
+    }
+
     public func shouldContinueTokenization(after failure: POFailure) -> Bool {
         true
     }