import { Injectable } from '@angular/core';
import { HttpClient } from '@angular/common/http';
import { ActivatedRouteSnapshot, Resolve, RouterStateSnapshot } from '@angular/router';
import { Observable } from 'rxjs/Observable';

import { environment } from '../../../environments/environment';
import { Team } from '../team';

@Injectable()
export class TeamService implements Resolve<Array<Team>> {

  private apiEndPoint = environment.apiUrl + '/api/team';
  private cachedTeams: Array<Team> = [];

  constructor(private httpClient: HttpClient) { }

  public resolve(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): Promise<Array<Team>> {
    return this.list().toPromise();
  }

  public list(): Observable<Array<Team>> {
    return this.httpClient.get<Array<Team>>(this.apiEndPoint);
  }

  public persist(team: Team): Observable<Team> {
    return team.id === null
      ? this.create(team)
      : this.update(team);
  }

  public create(team: Team) {
    return this.httpClient.post<Team>(this.apiEndPoint, team);
  }

  public update(team: Team) {
    return this.httpClient.put<Team>(`${this.apiEndPoint}/${team.id.toString()}`, team);
  }

  public delete(team: Team) {
    return this.httpClient.delete<boolean>(`${this.apiEndPoint}/${team.id.toString()}`);
  }

  get teams(): Array<Team> {
    return this.cachedTeams;
  }

  set teams(teams: Array<Team>) {
    this.cachedTeams = teams;
  }
}