apiVersion: apps/v1
kind: Deployment
metadata:
  name: seo-frontend
  namespace: seo-image-renamer
  labels:
    app: seo-frontend
    component: frontend
spec:
  replicas: 2
  strategy:
    type: RollingUpdate
    rollingUpdate:
      maxSurge: 1
      maxUnavailable: 1
  selector:
    matchLabels:
      app: seo-frontend
  template:
    metadata:
      labels:
        app: seo-frontend
        component: frontend
    spec:
      containers:
      - name: frontend
        image: nginx:1.21-alpine
        ports:
        - containerPort: 80
          name: http
        resources:
          requests:
            memory: "64Mi"
            cpu: "100m"
          limits:
            memory: "128Mi"
            cpu: "200m"
        livenessProbe:
          httpGet:
            path: /
            port: 80
          initialDelaySeconds: 10
          periodSeconds: 10
          timeoutSeconds: 5
          failureThreshold: 3
        readinessProbe:
          httpGet:
            path: /
            port: 80
          initialDelaySeconds: 5
          periodSeconds: 5
          timeoutSeconds: 3
          successThreshold: 1
          failureThreshold: 3
        volumeMounts:
        - name: nginx-config
          mountPath: /etc/nginx/nginx.conf
          subPath: nginx.conf
        - name: frontend-files
          mountPath: /usr/share/nginx/html
      volumes:
      - name: nginx-config
        configMap:
          name: nginx-config
      - name: frontend-files
        configMap:
          name: frontend-files
      restartPolicy: Always
---
apiVersion: v1
kind: Service
metadata:
  name: seo-frontend-service
  namespace: seo-image-renamer
  labels:
    app: seo-frontend
spec:
  selector:
    app: seo-frontend
  ports:
  - name: http
    port: 80
    targetPort: 80
    protocol: TCP
  type: ClusterIP
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: nginx-config
  namespace: seo-image-renamer
data:
  nginx.conf: |
    events {
      worker_connections 1024;
    }
    
    http {
      include /etc/nginx/mime.types;
      default_type application/octet-stream;
      
      sendfile on;
      tcp_nopush on;
      tcp_nodelay on;
      keepalive_timeout 65;
      
      gzip on;
      gzip_vary on;
      gzip_min_length 1024;
      gzip_types
        text/plain
        text/css
        text/xml
        text/javascript
        application/json
        application/javascript
        application/xml+rss
        application/atom+xml
        image/svg+xml;
      
      server {
        listen 80;
        server_name _;
        root /usr/share/nginx/html;
        index index.html;
        
        # Security headers
        add_header X-Frame-Options "SAMEORIGIN" always;
        add_header X-Content-Type-Options "nosniff" always;
        add_header X-XSS-Protection "1; mode=block" always;
        add_header Referrer-Policy "strict-origin-when-cross-origin" always;
        add_header Content-Security-Policy "default-src 'self'; script-src 'self' 'unsafe-inline' https://js.stripe.com https://cdnjs.cloudflare.com; style-src 'self' 'unsafe-inline' https://cdnjs.cloudflare.com; img-src 'self' data: https:; connect-src 'self' https://api.seo-image-renamer.com wss://api.seo-image-renamer.com https://api.stripe.com;" always;
        
        # API proxy
        location /api/ {
          proxy_pass http://seo-api-service/api/;
          proxy_set_header Host $host;
          proxy_set_header X-Real-IP $remote_addr;
          proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
          proxy_set_header X-Forwarded-Proto $scheme;
          proxy_connect_timeout 30s;
          proxy_send_timeout 30s;
          proxy_read_timeout 30s;
        }
        
        # WebSocket proxy
        location /socket.io/ {
          proxy_pass http://seo-api-service/socket.io/;
          proxy_http_version 1.1;
          proxy_set_header Upgrade $http_upgrade;
          proxy_set_header Connection "upgrade";
          proxy_set_header Host $host;
          proxy_set_header X-Real-IP $remote_addr;
          proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
          proxy_set_header X-Forwarded-Proto $scheme;
        }
        
        # Static files
        location / {
          try_files $uri $uri/ /index.html;
          expires 1y;
          add_header Cache-Control "public, immutable";
        }
        
        # Health check
        location /health {
          access_log off;
          return 200 "healthy\n";
          add_header Content-Type text/plain;
        }
      }
    }