import { Injectable } from '@angular/core'
import { HttpClient } from '@angular/common/http'
import 'rxjs/add/operator/catch'
import 'rxjs/add/operator/map'

import { RestExtractor } from '../../../shared'
import { Pod, ResultList } from '../../../../../../shared'

@Injectable()
export class FriendService {
  private static BASE_FRIEND_URL = API_URL + '/api/v1/pods/'

  constructor (
    private authHttp: HttpClient,
    private restExtractor: RestExtractor
  ) {}

  getFriends () {
    return this.authHttp.get<ResultList<Pod>>(FriendService.BASE_FRIEND_URL)
                        .map(res => this.restExtractor.convertResultListDateToHuman(res))
                        .catch(res => this.restExtractor.handleError(res))
  }

  makeFriends (notEmptyHosts: String[]) {
    const body = {
      hosts: notEmptyHosts
    }

    return this.authHttp.post(FriendService.BASE_FRIEND_URL + 'make-friends', body)
                        .map(this.restExtractor.extractDataBool)
                        .catch(res => this.restExtractor.handleError(res))
  }

  quitFriends () {
    return this.authHttp.get(FriendService.BASE_FRIEND_URL + 'quit-friends')
                        .map(this.restExtractor.extractDataBool)
                        .catch(res => this.restExtractor.handleError(res))
  }

  removeFriend (friend: Pod) {
    return this.authHttp.delete(FriendService.BASE_FRIEND_URL + friend.id)
                        .map(this.restExtractor.extractDataBool)
                        .catch(res => this.restExtractor.handleError(res))
  }
}