#
# Backend deployment
#
apiVersion: apps/v1
kind: Deployment
metadata:
  name: fruitapp-backend-deployment
  namespace: suhailahamed
  labels:
    app: fruitapp-backend
spec:
  replicas: 1
  selector:
    matchLabels:
      app: fruitapp-backend
  template:
    metadata:
      labels:
        app: fruitapp-backend
    spec:
      initContainers:
        - name: init-cont 
          image: busybox:1.31
          command: ['sh', '-c', 
          'echo -e "Checking for the availability of MySQL Server deployment"; while ! nc -z mysql-service 3306; do sleep 1; printf "-"; done; echo -e "  >> MySQL DB Server has started";']
      containers:
        - name: fruitapp-backend
          image: fruitapp-backend:latest
          imagePullPolicy: IfNotPresent
          command: ['bash']
          args: ['scripts/entrypoint.sh']
          ports:
            - containerPort: 5000
          env:
            - name: SQLALCHEMY_DATABASE_URI
              value: mysql://user:password@mysql-service/main
            - name: FLASK_APP
              value: app.py
            - name: MYSQL_DATABASE
              value: main
            - name: MYSQL_USER
              value: user
            - name: MYSQL_PASSWORD
              value: password
            - name: MYSQL_ROOT_PASSWORD
              value: root
---
#
# Frontend deployment
#
apiVersion: apps/v1
kind: Deployment
metadata:
  name: fruitapp-frontend-deployment
  namespace: suhailahamed
  labels:
    app: fruitapp-frontend
spec:
  replicas: 1
  selector:
    matchLabels:
      app: fruitapp-frontend
  template:
    metadata:
      labels:
        app: fruitapp-frontend
    spec:
      containers:
        - name: fruitapp-frontend
          image: fruitapp-frontend:latest
          imagePullPolicy: IfNotPresent
          ports:
            - containerPort: 80
          volumeMounts:
            - mountPath: /etc/nginx/conf.d/ # mount nginx-conf volumn to /etc/nginx
              readOnly: true
              name: nginx-conf
      volumes:
        - name: nginx-conf
          configMap:
            name: nginx-conf # place ConfigMap `nginx-conf` on /etc/nginx
            items:
              - key: default.conf
                path: default.conf
---
##
## ConfigMap for nginx

apiVersion: v1
kind: ConfigMap
metadata:
  name: nginx-conf
  namespace: suhailahamed
data:
  default.conf: |
    upstream Backend {
        # hello is the internal DNS name used by the backend Service inside Kubernetes
        server backend-service:5000;
    }

    server {
        listen 80;
        root   /usr/share/nginx/html;
        index  index.html;

        location / {
          try_files $uri /index.html;
        }
        location /api/ {
            # The following statement will proxy traffic to the upstream named Backend
            proxy_pass http://Backend;
        }
    }