worker_processes auto;

events {
    worker_connections 1024;
}

http {
    include /etc/nginx/mime.types;
    default_type application/octet-stream;

    # Logging
    log_format main '$remote_addr - $remote_user [$time_local] "$request" '
                    '$status $body_bytes_sent "$http_referer" '
                    '"$http_user_agent" "$http_x_forwarded_for"';
    
    access_log /var/log/nginx/access.log main;
    error_log /var/log/nginx/error.log warn;

    # Basic settings
    sendfile on;
    tcp_nopush on;
    tcp_nodelay on;
    keepalive_timeout 65;
    types_hash_max_size 2048;
    client_max_body_size 100M;

    # Gzip compression
    gzip on;
    gzip_vary on;
    gzip_min_length 1024;
    gzip_proxied expired no-cache no-store private auth;
    gzip_types text/plain text/css text/xml text/javascript application/javascript application/xml+rss application/json;
    gzip_disable "MSIE [1-6]\.";

    # 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;

    # Frontend server
    server {
        listen 80;
        server_name localhost;
        root /usr/share/nginx/html;
        index index.html;

        # Security headers for frontend
        add_header Content-Security-Policy "default-src 'self'; script-src 'self' 'unsafe-inline' 'unsafe-eval'; style-src 'self' 'unsafe-inline'; style-src-elem 'self' 'unsafe-inline' https://fonts.googleapis.com; img-src 'self' data: https:; font-src 'self' data: https://fonts.gstatic.com; connect-src 'self' https://api.placebo.mk https://cms.placebo.mk https://app.placebo.mk wss://api.placebo.mk; manifest-src 'self';" always;

        # Handle React Router
        location / {
            try_files $uri $uri/ /index.html;
            expires -1;
        }

        # Cache static assets
        location ~* \.(js|css|png|jpg|jpeg|gif|ico|svg|woff|woff2|ttf|eot)$ {
            expires 1y;
            add_header Cache-Control "public, immutable";
        }

        # API proxy (for local dev only - in prod use public URL)
        # location /api/ {
        #     proxy_pass http://backend:3000/;
        #     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;
        #     proxy_cache_bypass $http_upgrade;
        #     proxy_read_timeout 300;
        #     proxy_connect_timeout 300;
        # }

        # CMS proxy (for local dev only - in prod use public URL)
        # location /cms/ {
        #     proxy_pass http://cms:1337/;
        #     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;
        #     proxy_cache_bypass $http_upgrade;
        #     proxy_read_timeout 300;
        #     proxy_connect_timeout 300;
        # }

        # Health check endpoint
        location /health {
            access_log off;
            return 200 "healthy\n";
            add_header Content-Type text/plain;
        }

        # Error pages
        error_page 404 /index.html;
        error_page 500 502 503 504 /50x.html;
        location = /50x.html {
            root /usr/share/nginx/html;
        }
    }
}