server {
  listen 80;
  server_name _;

  root /usr/share/nginx/html;
  index index.html;

  proxy_connect_timeout 300s;
  proxy_send_timeout 300s;
  proxy_read_timeout 300s;
  proxy_ssl_server_name on;
  send_timeout 300s;

  location = /index.html {
    add_header Cache-Control "no-cache, no-store, must-revalidate" always;
    add_header Pragma "no-cache" always;
    add_header Expires "0" always;
    try_files /index.html =404;
  }

  location ~* \.(?:js|mjs|css|png|jpg|jpeg|gif|svg|ico|webp|avif|woff2?|ttf|otf|map)$ {
    add_header Cache-Control "public, max-age=31536000, immutable" always;
    try_files $uri =404;
  }

  location = /api {
    proxy_pass ${BACKEND_UPSTREAM}/api;
    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/ {
    proxy_pass ${BACKEND_UPSTREAM}/api/;
    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 = /health {
    proxy_pass ${BACKEND_UPSTREAM}/health/;
    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 /health/ {
    proxy_pass ${BACKEND_UPSTREAM}/health/;
    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 / {
    try_files $uri $uri/ /index.html;
  }
}