apiVersion: apps/v1
kind: Deployment
metadata:
  name: backend
  labels:
    app.kubernetes.io/name: backend
    app.kubernetes.io/component: api
spec:
  replicas: 2
  selector:
    matchLabels:
      app.kubernetes.io/name: backend
      app.kubernetes.io/component: api
  template:
    metadata:
      labels:
        app.kubernetes.io/name: backend
        app.kubernetes.io/component: api
    spec:
      initContainers:
        - name: wait-for-mysql
          image: busybox:1.36
          command:
            - sh
            - -c
            - |
              echo "Waiting for MySQL port to open..."
              until nc -z mysql 3306; do
                echo "MySQL not ready yet, retrying in 5s..."
                sleep 5
              done
              echo "Port open — waiting 15s for MySQL to finish initializing..."
              sleep 15
              echo "MySQL is ready!"
      containers:
        - name: backend
          image: scrum-backend:latest
          imagePullPolicy: IfNotPresent
          ports:
            - containerPort: 3001
              name: http
          env:
            - name: DB_HOST
              value: mysql
            - name: DB_PORT
              value: "3306"
            - name: DB_USER
              valueFrom:
                secretKeyRef:
                  name: mysql-secret
                  key: MYSQL_USER        # matches new secret key
            - name: DB_PASSWORD
              valueFrom:
                secretKeyRef:
                  name: mysql-secret
                  key: MYSQL_PASSWORD    # matches new secret key
            - name: DB_NAME
              valueFrom:
                secretKeyRef:
                  name: mysql-secret
                  key: DB_NAME
            - name: PORT
              value: "3001"
          resources:
            requests:
              cpu: 100m
              memory: 128Mi
            limits:
              cpu: 500m
              memory: 256Mi
          livenessProbe:
            httpGet:
              path: /api/health
              port: http
            initialDelaySeconds: 30
            periodSeconds: 10
            timeoutSeconds: 3
            failureThreshold: 3
          readinessProbe:
            httpGet:
              path: /api/health
              port: http
            initialDelaySeconds: 15
            periodSeconds: 5
            timeoutSeconds: 3
            failureThreshold: 5