D-Net

import {Injectable} from '@angular/core';

import {HttpClient, HttpHeaders} from "@angular/common/http";

import {CommunityInfo} from './communityInfo';

import {EnvProperties} from '../../utils/properties/env-properties';

import {map} from "rxjs/operators";

import {BehaviorSubject, from, Subscriber} from "rxjs";

import {properties} from "../../../../environments/environment";

import {HelperFunctions} from "../../utils/HelperFunctions.class";

@Injectable({providedIn: 'root'})

export class CommunityService {

  public community: BehaviorSubject<CommunityInfo> = null;

  private promise: Promise<boolean> = null;

  private sub;

  constructor(private http: HttpClient) {

    this.community = new BehaviorSubject(null);

  }

  ngOnDestroy() {

    this.clearSubscriptions();

  }

  clearSubscriptions() {

    if (this.sub instanceof Subscriber) {

      this.sub.unsubscribe();

    }

  }

  // TODO Remove these functions

  getCommunityByService(properties: EnvProperties, url: string) {

    this.promise = new Promise<any>(resolve => {

      this.sub = this.getCommunity(properties, url).subscribe(res => {

          this.community.next(res);

          resolve();

        },

        error => {

          this.community.error(error);

          resolve();

        })

    });

  }

  async getCommunityByStateAsync(properties: EnvProperties, url: string) {

    if (!this.promise) {

      this.getCommunityByService(properties, url);

    }

    await this.promise;

    this.clearSubscriptions();

    return this.community.getValue();

  }

  public getCommunityAsObservable() {

    return this.community.asObservable();

  }

  setCommunity(community: CommunityInfo) {

    this.community.next(community);

  }

  private formalize(element: any) {

    return HelperFunctions.copy(element);

  }

  getCommunityByState(properties: EnvProperties, url: string) {

    return from(this.getCommunityByStateAsync(properties, url));

  }

  getCommunity(properties: EnvProperties, url: string) {

    return this.http.get((properties.useCache) ? (properties.cacheUrl + encodeURIComponent(url)) : url)

      .pipe(map(res => this.parseCommunity(res)));

  }

  // TODO remove NEW from function names

  getCommunityNew(communityId: string) {

    if(!this.community.value || this.community.value.communityId !== communityId) {

      this.promise = new Promise<any>((resolve, reject) => {

        this.sub = this.http.get<CommunityInfo>(properties.communityAPI + communityId)

          .pipe(map(community => this.formalize(this.parseCommunity(community)))).subscribe(community => {

              this.community.next(community);

              resolve();

            },

            error => {

              this.community.next(null);

              reject();

            })

      });

    }

    return from(this.getCommunityAsync());

  }

  async getCommunityAsync() {

    await this.promise;

    this.clearSubscriptions();

    return this.community.getValue();

  }

  updateCommunity(url: string, community: any) {

    //const headers = new Headers({'Content-Type': 'application/json'});

    //const options = new RequestOptions({headers: headers});

    const options = {

      headers: new HttpHeaders({

        'Content-Type': 'application/json',

      })

    };

    const body = JSON.stringify(community);

    return this.http.post(url, body, options);

    /*.map(res => res.json())*/

  }

  async isCommunityManagerByStateAsync(properties: EnvProperties, url: string, manager: string) {

    if (!this.promise) {

      this.getCommunityByService(properties, url);

    }

    await this.promise;

    let community: CommunityInfo = this.community.getValue();

    return (community.managers.indexOf(manager) !== -1);

  }

  isCommunityManagerByState(properties: EnvProperties, url: string, manager: string) {

    return from(this.isCommunityManagerByStateAsync(properties, url, manager));

  }

  /**

   * @deprecated

   */

  isCommunityManager(properties: EnvProperties, url: string, manager: string) {

    return this.http.get((properties.useCache) ? (properties.cacheUrl + encodeURIComponent(url)) : url)

      //.map(res => <any> res.json())

      .pipe(map(res => this.parseCommunity(res)))

      .pipe(map(community => community.managers.indexOf(manager) !== -1));

  }

  async isTypeByStateAsync(properties: EnvProperties, url: string, type: string) {

    if (!this.promise) {

      this.getCommunityByService(properties, url);

    }

    await this.promise;

    let community: CommunityInfo = this.community.getValue();

    return (community && community.type && community.type === type);

  }

  isRITypeByState(properties: EnvProperties, url: string) {

    return from(this.isTypeByStateAsync(properties, url, "ri"));

  }

  isCommunityTypeByState(properties: EnvProperties, url: string) {

    return from(this.isTypeByStateAsync(properties, url, "community"));

  }

  /**

   * @deprecated

   */

  isRIType(properties: EnvProperties, url: string) {

    return this.http.get((properties.useCache) ? (properties.cacheUrl + encodeURIComponent(url)) : url)

      //.map(res => <any> res.json())

      .pipe(map(res => this.parseCommunity(res)))

      .pipe(map(community => (community && community.type && community.type === 'ri')));

  }

  /**

   * @deprecated

   */

  isCommunityType(properties: EnvProperties, url: string) {

    return this.http.get((properties.useCache) ? (properties.cacheUrl + encodeURIComponent(url)) : url)

      //.map(res => <any> res.json())

      .pipe(map(res => this.parseCommunity(res)))

      .pipe(map(community => (community && community.type && community.type === 'community')));

  }

  /**

   * @deprecated

   */

  isSubscribedToCommunity(pid: string, email: string, url: string) {

    return this.http.get(url + '/' + properties.adminToolsPortalType + '/' + pid + '/subscribers')

      //.map(res =>  ((<any>res === '') ? {} : <any> res.json()))

      .pipe(map(res => {

        if (res['subscribers'] && res['subscribers'] != null) {

          for (let i = 0; i < res['subscribers'].length; i++) {

            if (res['subscribers'][i] != null && res['subscribers'][i].email === email) {

              return true;

            }

          }

        }

        return false;

      }));

  }

  private parseCommunity(data: any): CommunityInfo {

    const resData = Array.isArray(data) ? data[0] : data;

    const community: CommunityInfo = new CommunityInfo();

    community['title'] = resData.name;

    community['shortTitle'] = resData.shortName;

    community['communityId'] = resData.id;

    community['queryId'] = resData.queryId;

    community['logoUrl'] = resData.logoUrl;

    community['description'] = resData.description;

    community['date'] = resData.creationDate;

    community['zenodoCommunity'] = resData.zenodoCommunity;

    community['status'] = 'all';

    if (resData.hasOwnProperty('status')) {

      community['status'] = resData.status;

      const status = ['all', 'hidden', 'manager'];

      if (status.indexOf(community['status']) === -1) {

        community['status'] = 'hidden';

      }

    }

    if (resData.type != null) {

      community['type'] = resData.type;

    }

    if (resData.managers != null) {

      if (community['managers'] === undefined) {

        community['managers'] = new Array<string>();

      }

      const managers = resData.managers;

      const length = Array.isArray(managers) ? managers.length : 1;

      for (let i = 0; i < length; i++) {

        const manager = Array.isArray(managers) ? managers[i] : managers;

        community.managers[i] = manager;

      }

    }

    if (resData.subjects != null) {

      if (community['subjects'] === undefined) {

        community['subjects'] = new Array<string>();

      }

      const subjects = resData.subjects;

      const length = Array.isArray(subjects) ? subjects.length : 1;

      for (let i = 0; i < length; i++) {

        const subject = Array.isArray(subjects) ? subjects[i] : subjects;

        community.subjects[i] = subject;

      }

    }

    return community;

  }

}