# send all requests to the `/validate` endpoint for authorization
auth_request    /validate;

location = /validate {
  # forward the /validate request to Vouch Proxy
  proxy_pass                        http://$vouch:9090/validate;
  proxy_http_version                1.1;
  internal;
  include                           snippets/proxy-headers.conf;

  # Vouch Proxy only acts on the request headers
  proxy_pass_request_body           off;
  proxy_set_header Content-Length   "";

  # optionally add X-Vouch-User as returned by Vouch Proxy along with the request
  auth_request_set $auth_resp_x_vouch_user $upstream_http_x_vouch_user;

  # these return values are used by the @error401 call
  auth_request_set                  $auth_resp_jwt $upstream_http_x_vouch_jwt;
  auth_request_set                  $auth_resp_err $upstream_http_x_vouch_err;
  auth_request_set                  $auth_resp_failcount $upstream_http_x_vouch_failcount;
}

# if validate returns `401 not authorized` then forward the request to the error401block
error_page 401 = @error401;

location @error401 {
    # redirect to Vouch Proxy for login
    return 302 https://vouch.shore.co.il/login?url=$scheme://$http_host$request_uri&vouch-failcount=$auth_resp_failcount&X-Vouch-Token=$auth_resp_jwt&error=$auth_resp_err;
}
