client/src/app/modal/welcome-modal.component.ts


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import { Component, ElementRef, ViewChild } from '@angular/core'
import { Notifier } from '@app/core'
import { NgbModal } from '@ng-bootstrap/ng-bootstrap'
import { UserService } from '@app/shared'

@Component({
  selector: 'my-welcome-modal',
  templateUrl: './welcome-modal.component.html',
  styleUrls: [ './welcome-modal.component.scss' ]
})
export class WelcomeModalComponent {
  @ViewChild('modal', { static: true }) modal: ElementRef

  constructor (
    private userService: UserService,
    private modalService: NgbModal,
    private notifier: Notifier
  ) { }

  show () {
    const ref = this.modalService.open(this.modal,{
      backdrop: 'static',
      keyboard: false,
      size: 'lg'
    })

    ref.result.finally(() => this.doNotOpenAgain())
  }

  private doNotOpenAgain () {
    this.userService.updateMyProfile({ noWelcomeModal: true })
      .subscribe(
        () => console.log('We will not open the welcome modal again.'),

        err => this.notifier.error(err.message)
      )

    return true
  }
}