class Url {
  static get REJECT_URL() {
    return `/api/annotation/reject`;
  }

  static get REJECT_REDIR_URL() {
    return `/envelope/${Url.ENV_KEY}`;
  }

  static get SHARE_URL() {
    return `/api/readonly`
  }

  static __XSRF_TOKEN
  static get XSRF_TOKEN() {
    Url.__XSRF_TOKEN ??= document.getElementsByName('__RequestVerificationToken')[0].value;
    return Url.__XSRF_TOKEN;
  }

  static get ENV_KEY() {
    return ENV_KEY ?? document.querySelector('meta[name="env-key"]').getAttribute('content');
  }
}

function submitForm(form) {
  fetch(form.action, {
    method: form.method,
    body: new FormData(form),
    headers: {
      "X-Requested-With": "XMLHttpRequest"
    }
  })
}

function createRequest(method, url, body, contentType = 'application/json') {
  return fetch(url, {
    credentials: 'include',
    method: method,
    headers: {
      'Content-Type': contentType,
      'X-XSRF-TOKEN': Url.XSRF_TOKEN
    },
    body: JSON.stringify(body)
  })
}

function createPost(url, body, contentType = 'application/json') {
  return createRequest('POST', url, body, contentType);
}

function rejectEnvelope(reason) {
  return createPost(Url.REJECT_URL, reason, Content.JSON);
}

function redirect(url) {
  return window.location.href = url;
}

function redirRejected() {
  return redirect(Url.REJECT_REDIR_URL);
}

function shareEnvelope(receiverMail, dateValid) {
  return createPost(Url.SHARE_URL, { receiverMail: receiverMail, dateValid: dateValid }, Content.JSON);
}