(function () {
  function _isNumeric(str) {
    if (typeof str != "string") {
      return false
    }
    return !isNaN(str) && !isNaN(parseFloat(str));
  }

  function _cast(str) {
    return _isNumeric(str) ? parseFloat(str) : str;
  }

  function _addAssocToDict(obj, key, value) {
    let splittedKey = Array.isArray(key) ? key : key.split(".");
    const keyToAdd = splittedKey.shift();
    const isTerminal = splittedKey.length === 0;
    if (isTerminal) {
      obj[keyToAdd] = _cast(value);
      return obj;
    }
    if (!(keyToAdd in obj)) {
      obj[keyToAdd] = {};
    }
    return _addAssocToDict(obj[keyToAdd], splittedKey, value);
  }

  function _createPayload(params) {
    let ret = {};
    for (let key of Object.keys(params)) {
      _addAssocToDict(ret, key, params[key]);
    }
    return ret;
  }

  htmx.defineExtension('json-enc', {
    onEvent: function (name, evt) {
      if (name === "htmx:configRequest") {
        evt.detail.headers['Content-Type'] = "application/json";
      }
    },

    encodeParameters: function (xhr, parameters, elt) {
      xhr.overrideMimeType('text/json');
      return (JSON.stringify(_createPayload(parameters)));
    }
  });
})();