apiVersion: v1
kind: Namespace
metadata:
    name: noteapp

---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
    name: mongodb-pvc
    namespace: noteapp
spec:
    accessModes:
        - ReadWriteOnce
    resources:
        requests:
            storage: 10Gi

---
apiVersion: v1
kind: ConfigMap
metadata:
    name: app-config
    namespace: noteapp
data:
    MONGODB_URI: "mongodb://admin:password@mongodb:27017/noteapp?authSource=admin"
    JWT_SECRET: "your-super-secret-jwt-key-change-in-production"
    ENCRYPTION_KEY: "00000000000000000000000000000000"
    PORT: "8080"

---
apiVersion: v1
kind: Secret
metadata:
    name: mongodb-credentials
    namespace: noteapp
type: Opaque
stringData:
    username: admin
    password: password

---
apiVersion: apps/v1
kind: StatefulSet
metadata:
    name: mongodb
    namespace: noteapp
spec:
    serviceName: mongodb
    replicas: 1
    selector:
        matchLabels:
            app: mongodb
    template:
        metadata:
            labels:
                app: mongodb
        spec:
            containers:
                - name: mongodb
                  image: mongo:7.0-alpine
                  ports:
                      - containerPort: 27017
                        name: mongodb
                  env:
                      - name: MONGO_INITDB_ROOT_USERNAME
                        valueFrom:
                            secretKeyRef:
                                name: mongodb-credentials
                                key: username
                      - name: MONGO_INITDB_ROOT_PASSWORD
                        valueFrom:
                            secretKeyRef:
                                name: mongodb-credentials
                                key: password
                  volumeMounts:
                      - name: mongodb-storage
                        mountPath: /data/db
                  livenessProbe:
                      exec:
                          command:
                              - mongosh
                              - mongodb://admin:password@localhost:27017/admin?authSource=admin
                              - --quiet
                              - --eval
                              - db.adminCommand('ping').ok
                      initialDelaySeconds: 30
                      periodSeconds: 10
                  readinessProbe:
                      exec:
                          command:
                              - mongosh
                              - mongodb://admin:password@localhost:27017/admin?authSource=admin
                              - --quiet
                              - --eval
                              - db.adminCommand('ping').ok
                      initialDelaySeconds: 5
                      periodSeconds: 5
                  resources:
                      requests:
                          memory: "256Mi"
                          cpu: "100m"
                      limits:
                          memory: "512Mi"
                          cpu: "500m"
            volumes:
                - name: mongodb-storage
                  persistentVolumeClaim:
                      claimName: mongodb-pvc

---
apiVersion: v1
kind: Service
metadata:
    name: mongodb
    namespace: noteapp
spec:
    clusterIP: None
    ports:
        - port: 27017
          targetPort: 27017
    selector:
        app: mongodb

---
apiVersion: apps/v1
kind: Deployment
metadata:
    name: noteapp
    namespace: noteapp
spec:
    replicas: 2
    selector:
        matchLabels:
            app: noteapp
    template:
        metadata:
            labels:
                app: noteapp
        spec:
            containers:
                - name: noteapp
                  image: noteapp:latest
                  imagePullPolicy: IfNotPresent
                  ports:
                      - containerPort: 8080
                        name: http
                  envFrom:
                      - configMapRef:
                            name: app-config
                  livenessProbe:
                      httpGet:
                          path: /health
                          port: 8080
                      initialDelaySeconds: 30
                      periodSeconds: 10
                  readinessProbe:
                      httpGet:
                          path: /health
                          port: 8080
                      initialDelaySeconds: 5
                      periodSeconds: 5
                  resources:
                      requests:
                          memory: "256Mi"
                          cpu: "100m"
                      limits:
                          memory: "512Mi"
                          cpu: "500m"

---
apiVersion: v1
kind: Service
metadata:
    name: noteapp
    namespace: noteapp
spec:
    selector:
        app: noteapp
    ports:
        - port: 8080
          targetPort: 8080
          protocol: TCP
    type: ClusterIP

---
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
    name: noteapp-ingress
    namespace: noteapp
    annotations:
        nginx.ingress.kubernetes.io/ssl-redirect: "false"
spec:
    ingressClassName: nginx
    rules:
        - host: noteapp.local
          http:
              paths:
                  - path: /api
                    pathType: Prefix
                    backend:
                        service:
                            name: noteapp
                            port:
                                number: 8080
                  - path: /
                    pathType: Prefix
                    backend:
                        service:
                            name: noteapp
                            port:
                                number: 8080

---
apiVersion: autoscaling/v2
kind: HorizontalPodAutoscaler
metadata:
    name: noteapp-hpa
    namespace: noteapp
spec:
    scaleTargetRef:
        apiVersion: apps/v1
        kind: Deployment
        name: noteapp
    minReplicas: 2
    maxReplicas: 10
    metrics:
        - type: Resource
          resource:
              name: cpu
              target:
                  type: Utilization
                  averageUtilization: 70
        - type: Resource
          resource:
              name: memory
              target:
                  type: Utilization
                  averageUtilization: 80