users: {
    getById: [
      {
        auth: true,
        params: {
          id: [
            utils.PARAM_REQUIRED,
            utils.PARAM_INTEGER,
            utils.PARAM_POSITIVE,
            [utils.PARAM_MIN, 1]
          ],
        }
      }, (params, request, response) => {
        return users.getById(params.id).then((data) => resultUser(response, data));
      }
    ],
    login: [
      {
        auth: false,
        params: {
          password: [
            utils.PARAM_REQUIRED,
            utils.PARAM_STRING,
            [utils.PARAM_LENGTH_MAX, users.CREDENTIALS_MAX_LENGTH],
            [utils.PARAM_LENGTH_MIN, users.CREDENTIALS_MIN_LENGTH]
          ],
          email: [
            utils.PARAM_REQUIRED,
            utils.PARAM_STRING,
            [utils.PARAM_LENGTH_MAX, users.CREDENTIALS_MAX_LENGTH],
            [utils.PARAM_LENGTH_MIN, users.CREDENTIALS_MIN_LENGTH]
          ],
        }
      }, (params, request, response) => {
        return users.login(request, response, params.email, params.password).then((data) => resultUser(response, data));
      }
    ],
    logout: [
      {
        auth: true,
      }, (params, request, response) => {
        users.logout(request, response);
        return Promise.resolve(OK);
      }
    ],
    create: [
      {
        auth: false,
        params: {
          password: [
            utils.PARAM_REQUIRED,
            utils.PARAM_STRING,
            [utils.PARAM_LENGTH_MAX, users.CREDENTIALS_MAX_LENGTH],
            [utils.PARAM_LENGTH_MIN, users.CREDENTIALS_MIN_LENGTH]
          ],
          email: [
            utils.PARAM_REQUIRED,
            utils.PARAM_STRING,
            [utils.PARAM_LENGTH_MAX, users.CREDENTIALS_MAX_LENGTH],
            [utils.PARAM_LENGTH_MIN, users.CREDENTIALS_MIN_LENGTH]
          ],
          first_name: [
            utils.PARAM_REQUIRED,
            utils.PARAM_STRING,
            [utils.PARAM_LENGTH_MAX, users.NAME_MAX_LENGTH],
            [utils.PARAM_LENGTH_MIN, users.NAME_MIN_LENGTH]
          ],
          last_name: [
            utils.PARAM_STRING,
            [utils.PARAM_LENGTH_MAX, users.NAME_MAX_LENGTH],
            [utils.PARAM_LENGTH_MIN, users.NAME_MIN_LENGTH]
          ],
          lang_id: [
            utils.PARAM_INTEGER,
            [utils.PARAM_IN_ARRAY, [lang.EN, lang.RU]]
          ],
        }
      }, (params, request, response) => {
        if (!params.lang_id) {
          params.lang_id = lang.detect(request);
        }

        return users.create(params.email, params.password, params.first_name, params.last_name, params.lang_id).then((data) => resultUser(response, data));
      }
    ],
    update: [
      {
        auth: true,
        params: {
          id: [
            utils.PARAM_REQUIRED,
            utils.PARAM_INTEGER,
            utils.PARAM_POSITIVE,
            [utils.PARAM_MIN, 1]
          ],
          email: [
            utils.PARAM_STRING,
            [utils.PARAM_LENGTH_MAX, users.CREDENTIALS_MAX_LENGTH],
            [utils.PARAM_LENGTH_MIN, users.CREDENTIALS_MIN_LENGTH]
          ],
          first_name: [
            utils.PARAM_STRING,
            [utils.PARAM_LENGTH_MAX, users.NAME_MAX_LENGTH],
            [utils.PARAM_LENGTH_MIN, users.NAME_MIN_LENGTH]
          ],
          last_name: [
            utils.PARAM_STRING,
            [utils.PARAM_LENGTH_MAX, users.NAME_MAX_LENGTH],
            [utils.PARAM_LENGTH_MIN, users.NAME_MIN_LENGTH]
          ],
          lang_id: [
            utils.PARAM_INTEGER,
            [utils.PARAM_IN_ARRAY, [lang.EN, lang.RU]]
          ],
        }
      }, (params, request, response) => {
        if (response.locals.user.id !== params.id) {
          return Promise.reject(CONST.ERROR_ACCESS_DENIED);
        }

        return users.update(params.id, params).then((data) => resultUser(response, data));
      }
    ],
  }