import { isObject,
          doRequest,
          getRequestOptions } from './utils';

export default class {
  constructor (host, auth, headers) {
    this.host = host;
    this.auth = auth;
    this.headers = headers;
  }

    get (options) {
      const operationSettings = {
  "requiresBody": false,
  "queryParams": [
    {
      "name": "org_key",
      "nameCamelCase": "orgKey"
    },
    {
      "name": "application_key",
      "nameCamelCase": "applicationKey"
    },
    {
      "name": "from",
      "nameCamelCase": "from"
    },
    {
      "name": "to",
      "nameCamelCase": "to"
    },
    {
      "name": "type",
      "nameCamelCase": "type"
    },
    {
      "name": "limit",
      "nameCamelCase": "limit"
    },
    {
      "name": "offset",
      "nameCamelCase": "offset"
    }
  ],
  "isApplicationJson": false,
  "isFormUrlEncoded": false,
  "method": "GET"
};

      return getRequestOptions(operationSettings, options)
        .then((opts) => {
          const uri = `${this.host}/changes`;
          const auth = opts.auth || this.auth;
          const headers = this.headers || {};

          // Layer in some options local to this class
          const requestOpts = Object.assign({ headers }, opts, {
            auth,
            uri
          });

          return doRequest(requestOpts).then(function (serverResponse) {
            switch (serverResponse.statusCode) {
              case 200:
                if (requestOpts.json) {
                  return Promise.resolve(serverResponse.body);
                } else {
                  return Promise.resolve(JSON.parse(serverResponse.body));
                }
              default:
                return Promise.reject(new Error('Unknown response code: ' + serverResponse.statusCode));
            }
          });
        });
    }

}