more cart

pkg/cart/mutation_set_recovery_contact.go

@@ -0,0 +1,52 @@
+package cart
+
+import (
+	"errors"
+	"log"
+
+	messages "git.k6n.net/mats/go-cart-actor/proto/cart"
+)
+
+// SetRecoveryContact replaces the entire recovery-contact bundle on a cart in
+// a single event. PUT-style semantics — empty email and an empty token list
+// both persist as "no contact attached"; callers wanting to clear should send
+// an empty bundle.
+//
+// Trivial whitespace-only normalization is intentionally NOT done here: the
+// notifier layer owns validation (and the LoggingNotifier just logs). A future
+// real notifier does its own normalization before sending, so we don't want
+// to lose the original input.
+func SetRecoveryContact(grain *CartGrain, req *messages.SetRecoveryContact) error {
+	if req == nil {
+		return errors.New("SetRecoveryContact: nil payload")
+	}
+	grain.Email = req.Email
+	if len(req.PushTokens) == 0 {
+		grain.PushTokens = nil
+		return nil
+	}
+	tokens := make([]PushToken, 0, len(req.PushTokens))
+	dropped := 0
+	for _, t := range req.PushTokens {
+		if t == nil {
+			// Defensive: a malformed wire request left a nil slot in the
+			// repeated field. Skip rather than crash and surface at debug
+			// level so a misbehaving client is visible without spamming.
+			dropped++
+			continue
+		}
+		tokens = append(tokens, PushToken{
+			Platform: t.Platform,
+			Token:    t.Token,
+		})
+	}
+	if dropped > 0 {
+		log.Printf("SetRecoveryContact: dropped %d nil push-token entries (malformed wire)", dropped)
+	}
+	if len(tokens) == 0 {
+		grain.PushTokens = nil
+		return nil
+	}
+	grain.PushTokens = tokens
+	return nil
+}