# Odoo Nginx SSL Configuration Template
# A+ SSL Labs Rating
# 
# Usage:
#   1. Copy to /etc/nginx/sites-available/odoo
#   2. Update: server_name, ssl_certificate paths, upstream odoo port
#   3. sudo ln -s /etc/nginx/sites-available/odoo /etc/nginx/sites-enabled/
#   4. sudo nginx -t && sudo systemctl reload nginx

upstream odoo {
  server 127.0.0.1:8069;
}

upstream odoochat {
  server 127.0.0.1:8072;
}

# Redirect HTTP to HTTPS
server {
  listen 80;
  server_name yourdomain.com www.yourdomain.com;
  return 301 https://$server_name$request_uri;
}

# HTTPS Server
server {
  listen 443 ssl http2;
  server_name yourdomain.com www.yourdomain.com;

  # SSL Certificate (Let's Encrypt)
  ssl_certificate /etc/letsencrypt/live/yourdomain.com/fullchain.pem;
  ssl_certificate_key /etc/letsencrypt/live/yourdomain.com/privkey.pem;

  # SSL Protocol and Ciphers (A+ Rating)
  ssl_protocols TLSv1.3 TLSv1.2;
  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 Cache
  ssl_session_timeout 1d;
  ssl_session_cache shared:SSL:50m;
  ssl_session_tickets off;

  # OCSP Stapling
  ssl_stapling on;
  ssl_stapling_verify on;
  resolver 8.8.8.8 8.8.4.4 valid=300s;
  resolver_timeout 5s;

  # Security Headers
  add_header Strict-Transport-Security "max-age=63072000; includeSubDomains; preload" always;
  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;

  # Logging
  access_log /var/log/nginx/odoo-access.log;
  error_log /var/log/nginx/odoo-error.log;

  # File Upload Size
  client_max_body_size 200M;

  # Proxy Settings
  proxy_read_timeout 720s;
  proxy_connect_timeout 720s;
  proxy_send_timeout 720s;
  proxy_set_header X-Forwarded-Host $host;
  proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
  proxy_set_header X-Forwarded-Proto $scheme;
  proxy_set_header X-Real-IP $remote_addr;

  # Odoo Web Interface
  location / {
    proxy_pass http://odoo;
    proxy_redirect off;
  }

  # Odoo Longpolling
  location /longpolling {
    proxy_pass http://odoochat;
  }

  # Gzip Compression
  gzip on;
  gzip_types text/css text/javascript application/x-javascript application/json application/xml;
  gzip_min_length 1000;

  # Cache Static Assets
  location ~* /web/static/ {
    proxy_cache_valid 200 90m;
    proxy_buffering on;
    expires 864000;
    proxy_pass http://odoo;
  }
}