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";

@Injectable({  providedIn: 'root' })

export class CommunityService {

  public community: BehaviorSubject<CommunityInfo> = null;

  private promise: Promise<boolean> = null;

  constructor(private http: HttpClient) {

    this.community = new BehaviorSubject(null);

  }

  sub;

  ngOnDestroy() {

    this.clearSubscriptions();

  }

  clearSubscriptions(){

    if (this.sub instanceof Subscriber) {

      this.sub.unsubscribe();

    }

  }

  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();

  }

  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)));

  }

  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;

  }

}