import { Injectable } from '@angular/core';
import { Router, Resolve, RouterStateSnapshot,
         ActivatedRouteSnapshot } from '@angular/router';

import { EnvProperties } from './env-properties';
import { EnvironmentSpecificService } from './environment-specific.service';

@Injectable()
export class EnvironmentSpecificResolver implements Resolve<EnvProperties> {
  constructor(private envSpecificSvc: EnvironmentSpecificService, private router: Router) {}

  resolve(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): Promise<EnvProperties> {
    return this.envSpecificSvc.loadEnvironment()
            .then(es => {
                this.envSpecificSvc.setEnvProperties(es);
                return this.envSpecificSvc.envSpecific;
            }, error => {
                console.log(error);
                return null;
            });
  }
}