# ==============================================================================
# Configuration Nginx pour ter-ferrovia.mrpatator.fr
# Emplacement recommandé sur le serveur : /etc/nginx/sites-available/ter-ferrovia.mrpatator.fr
# Lien symbolique : sudo ln -s /etc/nginx/sites-available/ter-ferrovia.mrpatator.fr /etc/nginx/sites-enabled/
# ==============================================================================

# Bloc HTTP : Redirection automatique vers HTTPS (une fois le certificat généré)
server {
    listen 80;
    listen [::]:80;
    server_name ter-ferrovia.mrpatator.fr;

    # Emplacement pour le challenge Let's Encrypt (Certbot)
    location /.well-known/acme-challenge/ {
        root /var/www/certbot;
    }

    # Redirection vers HTTPS
    location / {
        return 301 https://$host$request_uri;
    }
}

# Bloc HTTPS : Reverse Proxy vers l'application Next.js (PM2 port 3000)
server {
    listen 443 ssl http2;
    listen [::]:443 ssl http2;
    server_name ter-ferrovia.mrpatator.fr;

    # Certificats SSL (Générés par certbot --nginx -d ter-ferrovia.mrpatator.fr)
    ssl_certificate /etc/letsencrypt/live/ter-ferrovia.mrpatator.fr/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/ter-ferrovia.mrpatator.fr/privkey.pem;
    include /etc/letsencrypt/options-ssl-nginx.conf;
    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem;

    # Optimisation SSL
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_prefer_server_ciphers on;
    ssl_ciphers HIGH:!aNULL:!MD5;
    ssl_session_cache shared:SSL:10m;
    ssl_session_timeout 1d;

    # En-têtes de sécurité
    add_header X-Frame-Options "SAMEORIGIN" always;
    add_header X-XSS-Protection "1; mode=block" always;
    add_header X-Content-Type-Options "nosniff" always;
    add_header Referrer-Policy "no-referrer-when-downgrade" always;

    # Compression Gzip pour de meilleures performances
    gzip on;
    gzip_proxied any;
    gzip_comp_level 6;
    gzip_types text/plain text/css text/xml application/json application/javascript application/rss+xml application/atom+xml image/svg+xml;

    # Cache des fichiers statiques Next.js (_next/static)
    location /_next/static/ {
        proxy_pass http://127.0.0.1:3000;
        proxy_set_header Host $host;
        expires 365d;
        access_log off;
        add_header Cache-Control "public, max-age=31536000, immutable";
    }

    # Reverse Proxy principal vers Next.js
    location / {
        proxy_pass http://127.0.0.1:3000;
        proxy_http_version 1.1;

        # En-têtes pour WebSockets et Server-Sent Events
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        
        # En-têtes de transmission du client d'origine
        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;

        # Timeouts de proxy
        proxy_connect_timeout 60s;
        proxy_send_timeout 60s;
        proxy_read_timeout 60s;
    }
}