feat: add gateway status reconciler

internal/reconciler/gateway.go

@@ -0,0 +1,100 @@
+/*
+Copyright 2026 LocoStack.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package reconciler
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/LocoStack/loco-operator/api/v1alpha1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/runtime"
+	"sigs.k8s.io/controller-runtime/pkg/client"
+	"sigs.k8s.io/controller-runtime/pkg/client/apiutil"
+	logf "sigs.k8s.io/controller-runtime/pkg/log"
+)
+
+func ReconcileGatewayStatus(ctx context.Context, c client.Client, scheme *runtime.Scheme, stack string, obj client.Object) (*metav1.Condition, error) {
+	log := logf.FromContext(ctx)
+
+	if stack == "" {
+		return &metav1.Condition{
+			Type:               "GatewayBound",
+			Status:             metav1.ConditionFalse,
+			Reason:             "NoStackRef",
+			Message:            "No stack reference provided",
+			ObservedGeneration: obj.GetGeneration(),
+		}, nil
+	}
+
+	gvk, err := apiutil.GVKForObject(obj, scheme)
+	if err != nil {
+		log.Error(err, "Failed to get GVK for object", "object", obj)
+		return nil, err
+	}
+
+	gwList := &v1alpha1.ComponentList{}
+	err = c.List(ctx, gwList, client.InNamespace(obj.GetNamespace()), client.MatchingLabels{"locostack.com/component": "Gateway"})
+	if err != nil {
+		log.Error(err, "Failed to list gateway Components", "namespace", obj.GetNamespace(), "stack", stack)
+		return nil, err
+	}
+	gatewayFound := 0
+	gatewayBound := 0
+	for _, gw := range gwList.Items {
+		if gw.Spec.StackRef.Name != stack {
+			continue
+		}
+		gatewayFound += 1
+		emStatus, hasKindStatus := gw.Status.Dependencies[gvk.Kind]
+		if !hasKindStatus {
+			continue
+		}
+		status, hasStatus := emStatus[obj.GetName()]
+		if !hasStatus {
+			continue
+		}
+		if status == obj.GetGeneration() {
+			gatewayBound += 1
+		}
+	}
+	if gatewayFound == 0 {
+		return &metav1.Condition{
+			Type:               "GatewayBound",
+			Status:             metav1.ConditionFalse,
+			Reason:             "GatewayNotFound",
+			Message:            fmt.Sprintf("No gateway Components found that reference this %s in the Stack", gvk.Kind),
+			ObservedGeneration: obj.GetGeneration(),
+		}, nil
+	} else if gatewayBound < gatewayFound {
+		return &metav1.Condition{
+			Type:               "GatewayBound",
+			Status:             metav1.ConditionFalse,
+			Reason:             "GatewayNotBound",
+			Message:            fmt.Sprintf("%d out of %d gateway Components reference this %s in their status", gatewayBound, gatewayFound, gvk.Kind),
+			ObservedGeneration: obj.GetGeneration(),
+		}, nil
+	} else {
+		return &metav1.Condition{
+			Type:               "GatewayBound",
+			Status:             metav1.ConditionTrue,
+			Reason:             "GatewayBound",
+			Message:            fmt.Sprintf("All %d gateway Components reference this %s in their status", gatewayFound, gvk.Kind),
+			ObservedGeneration: obj.GetGeneration(),
+		}, nil
+	}
+}