feat: enhance event consumption logic and add success reply handling

internal/services/message_service_test.go

@@ -0,0 +1,29 @@
+package services
+
+import (
+	"testing"
+	"time"
+
+	"cs-agent/internal/models"
+	"cs-agent/internal/pkg/enums"
+)
+
+func TestAllowAIMessageOnPendingHandoff(t *testing.T) {
+	conversation := &models.Conversation{
+		Status:            enums.IMConversationStatusPending,
+		CurrentAssigneeID: 0,
+		HandoffAt:         ptrTime(time.Now()),
+	}
+	if !allowAIMessageOnPendingHandoff(conversation) {
+		t.Fatalf("expected pending handoff conversation to allow ai handoff notice")
+	}
+
+	conversation.Status = enums.IMConversationStatusAIServing
+	if allowAIMessageOnPendingHandoff(conversation) {
+		t.Fatalf("expected ai serving conversation not to use pending handoff allowance")
+	}
+}
+
+func ptrTime(v time.Time) *time.Time {
+	return &v
+}