# Backend — Deployment + NodePort Service
#
# BEFORE APPLYING:
#   Set the image to your built image, e.g.:
#     youruser/ecommerce-backend:latest       (Docker Hub)
#     registry.local:5000/ecommerce-backend:latest  (local registry)
#
# The init containers:
#   1. wait-for-postgres  — polls until PostgreSQL is accepting connections
#   2. run-migrations     — runs "prisma migrate deploy" once postgres is up
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: ecommerce-app
  namespace: ecommerce
  labels:
    app: ecommerce-app
spec:
  replicas: 1
  selector:
    matchLabels:
      app: ecommerce-app
  template:
    metadata:
      labels:
        app: ecommerce-app
    spec:
      initContainers:
        # Waits until PostgreSQL is ready before running migrations
        - name: wait-for-postgres
          image: postgres:15-alpine
          imagePullPolicy: IfNotPresent
          command:
            - sh
            - -c
            - |
              until pg_isready -h postgres -p 5432 -U vaishnavi; do
                echo "Waiting for PostgreSQL..."; sleep 3
              done
              echo "PostgreSQL is ready."

        # Runs Prisma migrations — uses the same backend image
        - name: run-migrations
          image: ecommerce-backend:latest   # <-- same image as the main container
          imagePullPolicy: IfNotPresent
          command: ["sh", "-c", "npx prisma migrate deploy"]
          envFrom:
            - secretRef:
                name: backend-secret
          env:
            - name: NODE_ENV
              value: "production"

      containers:
        - name: ecommerce-app
          image: ecommerce-backend:latest   # <-- replace with your registry image
          imagePullPolicy: IfNotPresent
          ports:
            - containerPort: 3000
              name: http
          envFrom:
            - configMapRef:
                name: backend-config
            - secretRef:
                name: backend-secret
          volumeMounts:
            - name: uploads
              mountPath: /app/uploads
          resources:
            requests:
              cpu: "250m"
              memory: "256Mi"
            limits:
              cpu: "500m"
              memory: "512Mi"
          readinessProbe:
            httpGet:
              path: /health
              port: 3000
            initialDelaySeconds: 15
            periodSeconds: 10
            failureThreshold: 3
          livenessProbe:
            httpGet:
              path: /health
              port: 3000
            initialDelaySeconds: 30
            periodSeconds: 20
            failureThreshold: 3

      volumes:
        - name: uploads
          emptyDir: {}
---
apiVersion: v1
kind: Service
metadata:
  name: ecommerce-app
  namespace: ecommerce
spec:
  type: NodePort
  selector:
    app: ecommerce-app
  ports:
    - name: http
      port: 3000
      targetPort: 3000
      nodePort: 30300    # Access via http://<NODE_IP>:30300