import { isHasticServerResponse, isSupportedServerVersion, SUPPORTED_SERVER_VERSION } from '../utils';

import { BackendSrv } from 'grafana/app/core/services/backend_srv';


export default class HasticAPI {
  private url: string;

  constructor(instanceSettings: any, private backendSrv: BackendSrv) {
    this.url = instanceSettings.url;
  }

  async get(url: string, params?: any) {
    return this._query('GET', url, params);
  }

  private async _query(method: string, url: string, data?: any) {
    method = method.toUpperCase();
    let options: any = {
      method,
      url: this.url + url
    };
    if(method === 'GET' || method === 'DELETE') {
      options.params = data;
    } else {
      options.data = data;
    }

    const response = await this.backendSrv.datasourceRequest(options);
    const responseData = response.data;

    if(!isHasticServerResponse(responseData)) {
      throw new Error(`Something is working at "${url}" but it's not Hastic Server`);
    }
    if(!isSupportedServerVersion(responseData)) {
      throw new Error(`Hastic Server at "${url}" has unsupported version (got ${responseData.packageVersion}, should be ${SUPPORTED_SERVER_VERSION})`);
    }

    return responseData;
  }
}