# ═══════════════════════════════════════════════════════════════
# FLUX SRL — Nginx SSL Configuration (rf-flux.com)
# Swap this in after running certbot:
#   cp nginx/conf.d/flux-ssl.conf nginx/conf.d/flux.conf
#   docker compose restart nginx
# ═══════════════════════════════════════════════════════════════

limit_req_zone $binary_remote_addr zone=api:10m rate=10r/s;
limit_req_zone $binary_remote_addr zone=login:10m rate=3r/m;

upstream nextjs {
    server app:3000;
    keepalive 32;
}

# HTTP → HTTPS redirect
server {
    listen 80;
    server_name rf-flux.com www.rf-flux.com;

    location /.well-known/acme-challenge/ {
        root /var/www/certbot;
    }

    location / {
        return 301 https://$host$request_uri;
    }
}

# HTTPS
server {
    listen 443 ssl http2;
    server_name rf-flux.com www.rf-flux.com;

    # SSL Certificates
    ssl_certificate /etc/letsencrypt/live/rf-flux.com/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/rf-flux.com/privkey.pem;

    # SSL Hardening (A+ on SSL Labs)
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384;
    ssl_prefer_server_ciphers off;
    ssl_session_timeout 1d;
    ssl_session_cache shared:SSL:10m;
    ssl_session_tickets off;
    ssl_stapling on;
    ssl_stapling_verify on;

    # HSTS (2 years)
    add_header Strict-Transport-Security "max-age=63072000; includeSubDomains; preload" always;

    # Content Security Policy
    add_header Content-Security-Policy "default-src 'self'; script-src 'self' 'unsafe-inline' 'unsafe-eval'; style-src 'self' 'unsafe-inline' https://fonts.googleapis.com; font-src 'self' https://fonts.gstatic.com; img-src 'self' data: blob:; connect-src 'self' https://api.openai.com; media-src 'self'; object-src 'none'; frame-ancestors 'self';" always;

    location /_next/static/ {
        proxy_pass http://nextjs;
        expires 365d;
        add_header Cache-Control "public, immutable";
        access_log off;
    }

    location /footage/ {
        proxy_pass http://nextjs;
        expires 30d;
        add_header Cache-Control "public";
        access_log off;
    }

    location /hq-command/ {
        limit_req zone=login burst=5 nodelay;
        proxy_pass http://nextjs;
        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;
    }

    location /api/chat {
        limit_req zone=api burst=20 nodelay;
        proxy_pass http://nextjs;
        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_http_version 1.1;
        proxy_set_header Connection '';
        proxy_buffering off;
        proxy_cache off;
        proxy_read_timeout 120s;
    }

    location /api/health {
        proxy_pass http://nextjs;
        access_log off;
    }

    location / {
        proxy_pass http://nextjs;
        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_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
    }
}