# Configuration nginx optimisée pour Formation Manager Itinova
# À placer dans /etc/nginx/sites-available/formation-manager

# Redirection HTTP → HTTPS
server {
    listen 80;
    listen [::]:80;
    server_name DOMAIN_NAME;

    # Redirection permanente vers HTTPS
    return 301 https://$server_name$request_uri;
}

# Configuration HTTPS
server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;
    server_name DOMAIN_NAME;

    # Certificats SSL (gérés par certbot)
    ssl_certificate /etc/letsencrypt/live/DOMAIN_NAME/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/DOMAIN_NAME/privkey.pem;
    include /etc/letsencrypt/options-ssl-nginx.conf;
    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem;

    # Logs
    access_log /var/log/nginx/formation-manager-access.log;
    error_log /var/log/nginx/formation-manager-error.log;

    # Compression gzip
    gzip on;
    gzip_vary on;
    gzip_min_length 1024;
    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/x-javascript
        image/svg+xml;

    # Sécurité 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;
    add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;

    # Limiter la taille des uploads (10 MB)
    client_max_body_size 10M;

    # Buffer sizes
    client_body_buffer_size 128k;
    client_header_buffer_size 1k;
    large_client_header_buffers 4 16k;

    # Timeouts
    client_body_timeout 12;
    client_header_timeout 12;
    keepalive_timeout 15;
    send_timeout 10;

    # Cache des fichiers statiques
    location ~* \.(jpg|jpeg|png|gif|ico|css|js|svg|woff|woff2|ttf|eot|webp)$ {
        proxy_pass http://localhost:APP_PORT;
        proxy_http_version 1.1;
        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;
        
        expires 1y;
        add_header Cache-Control "public, immutable";
        access_log off;
    }

    # Proxy vers l'application Node.js
    location / {
        proxy_pass http://localhost:APP_PORT;
        proxy_http_version 1.1;
        
        # WebSocket support
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        
        # Headers standards
        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_set_header X-Forwarded-Host $host;
        proxy_set_header X-Forwarded-Port $server_port;
        
        # Cache bypass
        proxy_cache_bypass $http_upgrade;
        
        # Timeouts
        proxy_connect_timeout 60s;
        proxy_send_timeout 60s;
        proxy_read_timeout 60s;
        
        # Buffers
        proxy_buffering on;
        proxy_buffer_size 4k;
        proxy_buffers 8 4k;
        proxy_busy_buffers_size 8k;
    }

    # Bloquer l'accès aux fichiers sensibles
    location ~ /\. {
        deny all;
        access_log off;
        log_not_found off;
    }

    location ~ ~$ {
        deny all;
        access_log off;
        log_not_found off;
    }

    # Endpoint de health check (optionnel)
    location /health {
        proxy_pass http://localhost:APP_PORT/health;
        access_log off;
    }
}