Function DeterministicEventID

internal/webhookpub/event.go:218–228

DeterministicEventID derives a stable event id from the trigger context. Per design §5.1, the input formula per event type is: email.received: sha256(message_id || "|" || event_type) email.sent: sha256(message_id || "|" || event_type) pending_review/review_approved/review_rejected: sha256(pe

(parts ...string)

// SMTP retries: the retried trigger produces the same id, and the
// outbox INSERT no-ops via ON CONFLICT (id) DO NOTHING.
func DeterministicEventID(parts ...string) string {
	h := sha256.New()
	for i, p := range parts {
		if i > 0 {
			h.Write([]byte("|"))
		}
		h.Write([]byte(p))
	}
	sum := h.Sum(nil)
	return "evt_" + hex.EncodeToString(sum[:16])
}