server {
  listen 80;
  server_name <%= Enum.join(project.server_names, " ") %>;

  <%= if not is_nil(project.acme_challenge_path) do %>
    location ^~ /.well-known/acme-challenge/ {
      alias <%= project.acme_challenge_path %>/.well-known/acme-challenge/;
    }

    location = /.well-known/acme-challenge/ {
      return 404;
    }
  <% end %>

  <%= if not is_nil(project.static_index_root) do %>
    <%= if project.http_only do %>
      root <%= project.static_index_root %>;
      index <%= project.static_index %>;

      location / {
        try_files $uri /index.html;
      }
    <% else %>
      # Serving HTTPS, so redirect from HTTP to HTTPS.
      location / {
        return 301 https://$host$request_uri;
      }
    <% end %>
  <% else %>
    <%= if project.http_only do %>
      # HTTP only. Route traffic to proxy.
      location / {
        proxy_pass http://backend_<%= project.name %>;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
      }
    <% else %>
      # Serving HTTPS, so redirect from HTTP to HTTPS.
      location / {
        return 301 https://$host$request_uri;
      }
    <% end %>
  <% end %>
}