# ==========================================
# API Gateway — Production Reverse Proxy
# ==========================================

server {
  listen 80;
  server_name api.svc.plus;
  return 301 https://$host$request_uri;
}

server {
  listen 443 ssl http2;
  server_name api.svc.plus;

  ssl_certificate     /etc/ssl/svc.plus.pem;
  ssl_certificate_key /etc/ssl/svc.plus.rsa.key;
  ssl_protocols       TLSv1.2 TLSv1.3;
  ssl_ciphers         HIGH:!aNULL:!MD5;
  ssl_prefer_server_ciphers on;

  add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;
  add_header X-Frame-Options "SAMEORIGIN";
  add_header X-Content-Type-Options "nosniff";
  add_header Referrer-Policy "strict-origin-when-cross-origin";

  location / {
    proxy_pass http://api_service;
    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;
    proxy_set_header X-Forwarded-Host $host;

    add_header Access-Control-Allow-Origin $http_origin always;
    add_header Access-Control-Allow-Methods "GET, POST, PUT, PATCH, DELETE, OPTIONS" always;
    add_header Access-Control-Allow-Headers "Authorization, Content-Type, Cookie" always;
    add_header Access-Control-Allow-Credentials "true" always;

    if ($request_method = OPTIONS) {
      return 204;
    }

    add_header Cache-Control "no-store";
  }
}