import {Component} from '@angular/core';
import {ActivatedRoute, Router} from '@angular/router';
import {Meta, Title} from '@angular/platform-browser';
import {EnvProperties} from '../openaireLibrary/utils/properties/env-properties';
import {CommunitiesService} from '../openaireLibrary/connect/communities/communities.service';
import {SubscribeService} from '../openaireLibrary/utils/subscribe/subscribe.service';
import {CommunityInfo} from '../openaireLibrary/connect/community/communityInfo';

import {PiwikService} from '../openaireLibrary/utils/piwik/piwik.service';
import {Session, User} from '../openaireLibrary/login/utils/helper.class';
import {StringUtils} from '../openaireLibrary/utils/string-utils.class';

import {ErrorCodes} from '../openaireLibrary/utils/properties/errorCodes';
import {ErrorMessagesComponent} from '../openaireLibrary/utils/errorMessages.component';
import {HelperService} from "../openaireLibrary/utils/helper/helper.service";
import {SEOService} from "../openaireLibrary/sharedComponents/SEO/SEO.service";
import {UserManagementService} from "../openaireLibrary/services/user-management.service";

@Component({
  selector: 'my-communities',
  templateUrl: 'my-communities.component.html',
})

export class MyCommunitiesComponent {
  public piwiksub: any;

  public pageTitle = "OpenAIRE"
  public subscriberOfCommunities = [];
  public managerOfCommunities = [];
  public researchCommunities = [];
  public pageContents = null;
  public divContents = null;
  // Message variables
  public status: number;
  public loading: boolean = true;
  public subscriberErrorMessage: string = "";
  public errorCodes: ErrorCodes;
  private errorMessages: ErrorMessagesComponent;

  properties: EnvProperties;
  private user: User;

  constructor(
    private route: ActivatedRoute,
    private _router: Router,
    private _meta: Meta,
    private _title: Title,
    private _piwikService: PiwikService,
    private _communitiesService: CommunitiesService,
    private _subscribeService: SubscribeService,
    private helper: HelperService,
    private seoService: SEOService,
    private userManagementService: UserManagementService) {

    var description = "OpenAIRE - Connect, Community Dashboard, research community " +
      "| My managing and subscribed to Communities";
    var title = "OpenAIRE - Connect | My Communities";

    this._meta.updateTag({content: description}, "name='description'");
    this._meta.updateTag({content: description}, "property='og:description'");
    this._meta.updateTag({content: title}, "property='og:title'");
    this._title.setTitle(title);

    this.errorCodes = new ErrorCodes();
    this.errorMessages = new ErrorMessagesComponent();
    this.status = this.errorCodes.LOADING;
  }

  public ngOnInit() {
    this.route.data
      .subscribe((data: { envSpecific: EnvProperties }) => {
        this.properties = data.envSpecific;
        var url = data.envSpecific.baseLink + this._router.url;
        this.seoService.createLinkForCanonicalURL(url, false);
        this._meta.updateTag({content: url}, "property='og:url'");
        if (this.properties.enablePiwikTrack && (typeof document !== 'undefined')) {
          this.piwiksub = this._piwikService.trackView(this.properties, "OpenAIRE Connect", this.properties.piwikSiteId).subscribe();
        }
        if (typeof document !== 'undefined') {
          this.userManagementService.getUserInfo(this.properties.userInfoUrl).subscribe(user => {
            this.user = user;
            this.getCommunities();
            //this.getDivContents();
            //this.getPageContents();
          });
        }
      });
  }

  private getPageContents() {
    this.helper.getPageHelpContents(this._router.url, this.properties, 'connect').subscribe(contents => {
      this.pageContents = contents;
    })
  }

  private getDivContents() {
    this.helper.getDivHelpContents(this._router.url, this.properties, 'connect').subscribe(contents => {
      this.divContents = contents;
    })
  }

  public getCommunities() {
    this.loading = true;
    this.status = this.errorCodes.LOADING;
    this.subscriberErrorMessage = "";

    this.subscriberOfCommunities = [];
    this.managerOfCommunities = [];
    this.researchCommunities = [];

    this._communitiesService.getCommunitiesState().subscribe(
      communitiesResults => {
        if(!communitiesResults){
          return;
        }
        if(communitiesResults.length == 0) {
          this.status = this.errorCodes.DONE;
          return;
        };
        this.sort(communitiesResults);

        var subscribedLoading = communitiesResults.length;
        var mail = this.user.email;
        communitiesResults.forEach((community, index) => {
          let showCommunity: boolean = true;
          let isManager: boolean = false;
          let isSubscriber: boolean = false;

          if (community['status'] == "hidden") {
            showCommunity = false;
          } else {
            if (mail == null && community['status'] == "manager") { // no user
              showCommunity = false;
            } else if (Session.isCommunityCurator(this.user) || Session.isPortalAdministrator(this.user)) {
              isManager = true;
            } else if (community.managers.indexOf(mail) != -1) {
              isManager = true;
            } else if (community['status'] == "manager") {
              showCommunity = false;
            }
          }

          if (showCommunity) {
            this.researchCommunities.push(community);
            if (isManager) {
              community.isManager = true;
              this.managerOfCommunities.push(community);
            }
          }

          this.status = this.errorCodes.DONE;

          if (mail != null && showCommunity) {
            this._subscribeService.isSubscribedToCommunity(this.properties, community.communityId, mail).subscribe(
              res => {
                isSubscriber = res;
                if (isSubscriber) {
                  community.isSubscribed = true;
                  if (isManager) {
                    this.subscriberOfCommunities.push(community);
                  } else {
                    this.subscriberOfCommunities.unshift(community);
                  }
                }

                subscribedLoading--;
                if (subscribedLoading == 0) {
                  this.loading = false;
                }
              },
              error => {
                this.handleError("Error getting response if email: " + mail + " is subscribed to community with id: " + community.communityId, error);
                subscribedLoading--;
                if (subscribedLoading == 0) {
                  this.loading = false;
                }
              });
          } else {
            subscribedLoading--;
            if (subscribedLoading == 0) {
              this.loading = false;
            }
          }
        });
      },
      error => {
        this.status = this.handleError("Error getting communities", error);
        this.loading = false;
      }
    );
  }

  private sort(results: CommunityInfo[]) {
    results.sort((left, right): number => {
      if (!right.date || left.date > right.date) {
        return -1;
      } else if (!left.date || left.date < right.date) {
        return 1;
      } else {
        if (left.title > right.title) {
          return 1;
        } else if (left.title < right.title) {
          return -1;
        } else {
          return 0;
        }
      }
    })
  }

  public quote(param: string): string {
    return StringUtils.quote(param);
  }

  public ngOnDestroy() {
    if (this.piwiksub) {
      this.piwiksub.unsubscribe();
    }
  }

  private handleError(message: string, error): number {
    var code = "";
    if (!error.status) {
      var error = error.json();
      code = error.code;
    } else {
      code = error.status;
    }

    console.error("Communities (component): " + message, error);

    return this.errorMessages.getErrorCode(code);
  }
}