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

import { environment } from '../../../environments/environment';
import { Commit } from '../commit';
import { TeamService } from './team.service';

@Injectable()
export class CommitTrackerService implements Resolve<Array<Commit>> {

  private apiEndPoint = environment.commitTrackerApiUrl;
  private cachedCommits: Array<Commit> = [];

  constructor(private httpClient: HttpClient,
              private teamService: TeamService) { }

  public resolve(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): Promise<Array<Commit>> {
    return this.getTeamCommits(this.teamService.teamMembers).toPromise();
  }

  public getTeamCommits(signums: Array<String>): Observable<Array<Commit>> {
    const params = new HttpParams().set('json_signums', JSON.stringify(signums));
    return this.httpClient.get<Array<Commit>>(this.apiEndPoint, {params});
  }

  get commits(): Array<Commit> {
    return this.cachedCommits;
  }

  set commits(commits: Array<Commit>) {
    this.cachedCommits = commits;
  }
}