import { Injectable } from '@angular/core';
import { HttpClient } from '@angular/common/http';
import * as _ from 'lodash';

interface Config {
   api: string
}

@Injectable()
export class AppSettingsService {

   private config: Config;

   constructor(private http: HttpClient) {
   }

   bootstrap() {
      return this.http.get<Config>('/api/appsettings')
         .toPromise()
         .then(response => {
            this.config = response;
            //example https://testmtechapi.azurewebsites.net becomes https://testmtechapi-staging.azurewebsites.net
            if (_(window.location.hostname).includes('-staging')) {
               let urlParts = this.config.api.split('.');
               if (urlParts.length < 2) {
                  return;
               }
               urlParts[0] += '-staging';
               this.config.api = urlParts.join('.');
            } 
         });
   }

   getConfig() {
      return this.config;
   }
}