user nginx;
worker_processes auto;
error_log /var/log/nginx/error.log warn;
pid /var/run/nginx.pid;

events {
    worker_connections 1024;
}

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

    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;

    # Performance optimizations
    sendfile on;
    tcp_nopush on;
    tcp_nodelay on;
    keepalive_timeout 65;
    types_hash_max_size 2048;

    # Gzip compression
    gzip on;
    gzip_vary on;
    gzip_proxied any;
    gzip_comp_level 6;
    gzip_types text/plain text/css text/xml text/javascript 
               application/json application/javascript application/xml+rss 
               application/rss+xml font/truetype font/opentype 
               application/vnd.ms-fontobject image/svg+xml;

    server {
        listen 80;
        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 "no-referrer-when-downgrade" always;

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

        # Cache static assets - CSS/JS
        location ~* \.(css|js)$ {
            expires 1y;
            add_header Cache-Control "public, immutable";
        }

        # Cache static assets - Fonts
        location ~* \.(woff|woff2|ttf|otf|eot)$ {
            expires 1y;
            add_header Cache-Control "public, immutable";
            add_header Access-Control-Allow-Origin "*";
        }

        # SPA fallback - toutes les routes vers index.html
        location / {
            try_files $uri $uri/ /index.html;
        }

        # Disable cache for index.html
        location = /index.html {
            add_header Cache-Control "no-cache, no-store, must-revalidate";
            add_header Pragma "no-cache";
            add_header Expires "0";
        }

        # Disable cache for service worker if you add one later
        location = /service-worker.js {
            add_header Cache-Control "no-cache, no-store, must-revalidate";
            add_header Pragma "no-cache";
            add_header Expires "0";
        }

        # Error pages
        error_page 404 /index.html;
    }
}