more cart

pkg/cart/recovery/logging_notifier.go

@@ -0,0 +1,59 @@
+package recovery
+
+import (
+	"context"
+	"log"
+
+	"git.k6n.net/mats/go-cart-actor/pkg/cart"
+)
+
+// LoggingNotifier is the v0 default: it writes one INFO line per candidate
+// and returns nil. It deliberately does NOT pretend to send anything.
+//
+// Future implementations (MailerSend, FCM, APNs) implement the same Notifier
+// interface; the scanner doesn't change. LoggingNotifier also serves as the
+// "dry-run" mode in production by leaving the seam unconfigured.
+type LoggingNotifier struct{}
+
+// NewLoggingNotifier returns a Notifier that logs every candidate. The struct
+// is empty today; the constructor is kept for parity with future notifiers
+// that need credentials / config.
+func NewLoggingNotifier() *LoggingNotifier { return &LoggingNotifier{} }
+
+// NotifyAbandoned logs the cart id, contact present, and a tiny summary.
+// Push tokens are summarized by platform only — never log the raw token, so
+// a misconfigured log aggregator can't leak device handles.
+func (LoggingNotifier) NotifyAbandoned(_ context.Context, c RecoveryCandidate) error {
+	hasEmail := c.Email != ""
+	hasPush := len(c.PushTokens) > 0
+	channel := "none"
+	switch {
+	case hasEmail && hasPush:
+		channel = "email+push"
+	case hasEmail:
+		channel = "email"
+	case hasPush:
+		channel = "push"
+	}
+	log.Printf(
+		"recovery [dry-run]: cart=%d user=%q channel=%s items=%d total=%d currency=%s email=%q pushPlatforms=%v lastChangeUnix=%d",
+		c.CartID,
+		c.UserID,
+		channel,
+		c.ItemCount,
+		c.TotalIncVat,
+		c.Currency,
+		c.Email,
+		platformsOf(c.PushTokens),
+		c.LastChangeUnix,
+	)
+	return nil
+}
+
+func platformsOf(tokens []cart.PushToken) []string {
+	out := make([]string, 0, len(tokens))
+	for _, t := range tokens {
+		out = append(out, t.Platform)
+	}
+	return out
+}