client/src/app/shared/shared-main/users/user-notifications.component.ts

   1 import { Subject } from 'rxjs'
   2 import { Component, EventEmitter, Input, OnInit, Output } from '@angular/core'
   3 import { ComponentPagination, hasMoreItems, Notifier } from '@app/core'
   4 import { UserNotificationType } from '@shared/models'
   5 import { UserNotification } from './user-notification.model'
   6 import { UserNotificationService } from './user-notification.service'
   7
   8 @Component({
   9   selector: 'my-user-notifications',
  10   templateUrl: 'user-notifications.component.html',
  11   styleUrls: [ 'user-notifications.component.scss' ]
  12 })
  13 export class UserNotificationsComponent implements OnInit {
  14   @Input() ignoreLoadingBar = false
  15   @Input() infiniteScroll = true
  16   @Input() itemsPerPage = 20
  17   @Input() markAllAsReadSubject: Subject<boolean>
  18
  19   @Output() notificationsLoaded = new EventEmitter()
  20
  21   notifications: UserNotification[] = []
  22   sortField = 'createdAt'
  23
  24   // So we can access it in the template
  25   UserNotificationType = UserNotificationType
  26
  27   componentPagination: ComponentPagination
  28
  29   onDataSubject = new Subject<any[]>()
  30
  31   constructor (
  32     private userNotificationService: UserNotificationService,
  33     private notifier: Notifier
  34   ) { }
  35
  36   ngOnInit () {
  37     this.componentPagination = {
  38       currentPage: 1,
  39       itemsPerPage: this.itemsPerPage, // Reset items per page, because of the @Input() variable
  40       totalItems: null
  41     }
  42
  43     this.loadNotifications()
  44
  45     if (this.markAllAsReadSubject) {
  46       this.markAllAsReadSubject.subscribe(() => this.markAllAsRead())
  47     }
  48   }
  49
  50   loadNotifications (reset?: boolean) {
  51     this.userNotificationService.listMyNotifications({
  52       pagination: this.componentPagination,
  53       ignoreLoadingBar: this.ignoreLoadingBar,
  54       sort: {
  55         field: this.sortField,
  56         order: this.sortField === 'createdAt' ? -1 : 1
  57       }
  58     })
  59         .subscribe(
  60           result => {
  61             this.notifications = reset ? result.data : this.notifications.concat(result.data)
  62             this.componentPagination.totalItems = result.total
  63
  64             this.notificationsLoaded.emit()
  65
  66             this.onDataSubject.next(result.data)
  67           },
  68
  69           err => this.notifier.error(err.message)
  70         )
  71   }
  72
  73   onNearOfBottom () {
  74     if (this.infiniteScroll === false) return
  75
  76     this.componentPagination.currentPage++
  77
  78     if (hasMoreItems(this.componentPagination)) {
  79       this.loadNotifications()
  80     }
  81   }
  82
  83   markAsRead (notification: UserNotification) {
  84     if (notification.read) return
  85
  86     this.userNotificationService.markAsRead(notification)
  87         .subscribe(
  88           () => {
  89             notification.read = true
  90           },
  91
  92           err => this.notifier.error(err.message)
  93         )
  94   }
  95
  96   markAllAsRead () {
  97     this.userNotificationService.markAllAsRead()
  98         .subscribe(
  99           () => {
 100             for (const notification of this.notifications) {
 101               notification.read = true
 102             }
 103           },
 104
 105           err => this.notifier.error(err.message)
 106         )
 107   }
 108
 109   changeSortColumn (column: string) {
 110     this.componentPagination = {
 111       currentPage: 1,
 112       itemsPerPage: this.itemsPerPage,
 113       totalItems: null
 114     }
 115     this.sortField = column
 116     this.loadNotifications(true)
 117   }
 118 }