connect/src/app/utils/subscribe/subscribe.component.ts

import {Component, EventEmitter, Input, Output, ViewChild} from '@angular/core';
import {ActivatedRoute, Router} from '@angular/router';
import {EnvProperties} from '../../openaireLibrary/utils/properties/env-properties';
import {AlertModal} from '../../openaireLibrary/utils/modal/alert';

import {CommunityService} from '../../openaireLibrary/connect/community/community.service';
import {SubscribeService} from '../../openaireLibrary/utils/subscribe/subscribe.service';
import {EmailService} from "../../openaireLibrary/utils/email/email.service";
import {Session} from '../../openaireLibrary/login/utils/helper.class';

import {Email} from "../../openaireLibrary/utils/email/email";
import {Composer} from "../../openaireLibrary/utils/email/composer";
import {LoginErrorCodes} from '../../openaireLibrary/login/utils/guardHelper.class';

declare var UIkit: any;

@Component({
    selector: 'subscribe',
    template: `

    <span *ngIf="subscribed != null && !showNumbers && showTemplate">
      <div *ngIf="!subscribed && showLoginAlert" class="uk-alert-warning uk-animation-slide-bottom" uk-alert=""  >
      <a class="uk-alert-close" uk-close></a>
      <p>Please login first to subscribe</p>
      </div>
      <button *ngIf="!subscribed" [class]="'uk-button uk-button-primary' + (loading ? ' uk-disabled' : '')" (click)="subscribe()"> Subscribe</button>
      <button *ngIf="subscribed" [class]="'uk-button uk-button-primary' + (loading ? ' uk-disabled' : '')" (click)="confirmOpen()"> Unsubscribe</button>
    </span>

    <span *ngIf="showNumbers && subscribers !=null && subscribers > 0  && showTemplate" >
      <span class="lowOpacityColor">  Members</span> {{subscribers}}
    </span>
    <modal-alert (alertOutput)="confirmClose($event)">
    </modal-alert>
    `
})

export class SubscribeComponent {
  // @Input() showSubscribe:boolean = true;
  @Input() showNumbers:boolean;
  @Input() communityId:string;
  @Input() showTemplate:boolean = true;
  @Output() subscribeEvent = new EventEmitter();

  public community = null;
  public emailToInformManagers: Email;

  loading: boolean = false;
  subscribed:boolean = null;
  properties:EnvProperties;
  subscribers:number= null;
  showLoginAlert:Boolean = false;
  @ViewChild(AlertModal) alert;
  constructor (private route: ActivatedRoute,
      private _subscribeService: SubscribeService,
      private _emailService: EmailService,
      private _communityService: CommunityService, private router: Router
    ) {
    }

    public ngOnInit() {
      this.route.data
          .subscribe((data: { envSpecific: EnvProperties }) => {
             this.properties = data.envSpecific;
             if(!this.showNumbers){
               let email = Session.getUserEmail();
               if(email == null){
                 this.subscribed = false;
               }else{
                 if(this.communityId){
                   this._subscribeService.isSubscribedToCommunity(this.properties, this.communityId, email).subscribe (
                     res => {
                       this.subscribed = res;
                       if(this.subscribed){
                         this.subscribeEvent.emit({
                           value: "ok"
                         });
                       }
                     },
                     error => {
                       this.handleError("Error getting response if email: "+email+" is subscribed to community with id: "+this.communityId, error);
                     });
                   }
               }
             }else{
               if(this.communityId){
                 this._subscribeService.getCommunitySubscribers(this.properties, this.communityId).subscribe (
                   res => {
                      this.subscribers = (res && res.subscribers && res.subscribers.length )?res.subscribers.length:0;
                   },
                   error => {
                     this.handleError("Error getting community subscribers for community with id: "+this.communityId, error);
                   });
                 }
             }
             if(this.communityId){
               this.emailToInformManagers = {body: "", subject: "", recipients: []};

               this._communityService.getCommunity(this.properties, this.properties.communityAPI+this.communityId).subscribe (
                 community => {
                          this.community = community;
                 },
                 error => {
                   //console.log('System error retrieving community profile', error)
                   this.handleError("Error getting community with id: "+this.communityId, error);
                 }
               );
             }
           });


    }

    subscribe(){
      var email = Session.getUserEmail();
      if(email == null){
        this.subscribed = false;
         // this.showLoginAlert = true;
         this.router.navigate(['/user-info'], { queryParams: { "errorCode": LoginErrorCodes.ACTION_REQUIRES_LOGIN, "redirectUrl":  this.router.url } });
      }else{
        this.loading = true;
        this.showLoginAlert = false;
        this._subscribeService.subscribeToCommunity(this.communityId, email, this.properties.adminToolsAPIURL).subscribe (
          res => {
            this.loading = false;
             if(res.status && res.status != 200) {
               this.subscribeEvent.emit({
                 value: "error"
               });
               UIkit.notification({
                   message : '<strong>An error occured. Please try again!<strong>',
                   status  : 'warning',
                   timeout : 3000,
                   pos     : 'top-center'
               });
             } else {
               if(!this.subscribed){
                 this.subscribed = true;
                 this.subscribeEvent.emit({
                   value: "ok"
                 });
                 this._emailService.sendEmail(this.properties.adminToolsAPIURL + "/notifyForNewSubscribers/" + this.communityId, Composer.composeEmailToInformManagers(this.community.title, this.communityId, this.community.managers, email)).subscribe(
                   res => {
                     //console.log("The email has been sent successfully!")
                   },
                   error => {
                     //console.log(error)
                     this.handleError("Error notifying managers about new subscribers for community with id: "+this.communityId, error);
                   }
                 );
               }
            }
          },
          error => {
            this.loading = false;
            this.subscribeEvent.emit({
              value: "error"
            });
            UIkit.notification({
                message : '<strong>An error occured. Please try again!<strong>',
                status  : 'warning',
                timeout : 3000,
                pos     : 'top-center'
            });
            //console.log(error)
            this.handleError("Error subscribing email: "+email+" to community with id: "+this.communityId, error);
          });
      }
    }

    unsubscribe(){
      var email = Session.getUserEmail();
      if(email == null){
        this.subscribed = false;
      }else{
        this.loading = true;
        //this.properties.adminToolsAPIURL
        this._subscribeService.unSubscribeToCommunity(this.communityId, email,this.properties.adminToolsAPIURL).subscribe (
          res => {
            this.loading = false;
            if(res.status && res.status != 200) {
              UIkit.notification({
                  message : '<strong>An error occured. Please try again!<strong>',
                  status  : 'warning',
                  timeout : 3000,
                  pos     : 'top-center'
              });
            } else {
             //console.log(res);
             if(this.subscribed){
               this.subscribed = false;
             }
           }
          },
          error => {
            this.loading = false;
            UIkit.notification({
                message : '<strong>An error occured. Please try again!<strong>',
                status  : 'warning',
                timeout : 3000,
                pos     : 'top-center'
            });
            //console.log(error)
            this.handleError("Error unsubscribing email: "+email+" from community with id: "+this.communityId, error);
          });
      }
    }

    confirmOpen(){

        this.alert.cancelButton = true;
        this.alert.okButton = true;
        this.alert.alertTitle = "Unsubscribe community ";
        this.alert.message = "Do you want to proceed? ";
        this.alert.okButtonText = "Yes";
        this.alert.cancelButtonText = "No";
        this.alert.open();
      }
      confirmClose(data){
       this.unsubscribe();
     }

     private handleError(message: string, error) {
       console.error("Subscribe (component): "+message, error);
     }
}