client/src/app/videos/+video-watch/comment/video-comments.component.ts

   1 import { Component, Input, OnChanges, OnDestroy, OnInit, SimpleChanges, ViewChild, ElementRef } from '@angular/core'
   2 import { ActivatedRoute } from '@angular/router'
   3 import { ConfirmService } from '@app/core'
   4 import { NotificationsService } from 'angular2-notifications'
   5 import { Subscription } from 'rxjs'
   6 import { VideoCommentThreadTree } from '../../../../../../shared/models/videos/video-comment.model'
   7 import { AuthService } from '../../../core/auth'
   8 import { ComponentPagination } from '../../../shared/rest/component-pagination.model'
   9 import { User } from '../../../shared/users'
  10 import { VideoSortField } from '../../../shared/video/sort-field.type'
  11 import { VideoDetails } from '../../../shared/video/video-details.model'
  12 import { VideoComment } from './video-comment.model'
  13 import { VideoCommentService } from './video-comment.service'
  14 import { I18n } from '@ngx-translate/i18n-polyfill'
  15 import { Syndication } from '@app/shared/video/syndication.model'
  16
  17 @Component({
  18   selector: 'my-video-comments',
  19   templateUrl: './video-comments.component.html',
  20   styleUrls: ['./video-comments.component.scss']
  21 })
  22 export class VideoCommentsComponent implements OnInit, OnChanges, OnDestroy {
  23   @ViewChild('commentHighlightBlock') commentHighlightBlock: ElementRef
  24   @Input() video: VideoDetails
  25   @Input() user: User
  26
  27   comments: VideoComment[] = []
  28   highlightedThread: VideoComment
  29   sort: VideoSortField = '-createdAt'
  30   componentPagination: ComponentPagination = {
  31     currentPage: 1,
  32     itemsPerPage: 10,
  33     totalItems: null
  34   }
  35   inReplyToCommentId: number
  36   threadComments: { [ id: number ]: VideoCommentThreadTree } = {}
  37   threadLoading: { [ id: number ]: boolean } = {}
  38
  39   syndicationItems: Syndication[] = []
  40
  41   private sub: Subscription
  42
  43   constructor (
  44     private authService: AuthService,
  45     private notificationsService: NotificationsService,
  46     private confirmService: ConfirmService,
  47     private videoCommentService: VideoCommentService,
  48     private activatedRoute: ActivatedRoute,
  49     private i18n: I18n
  50   ) {}
  51
  52   ngOnInit () {
  53     // Find highlighted comment in params
  54     this.sub = this.activatedRoute.params.subscribe(
  55       params => {
  56         if (params['threadId']) {
  57           const highlightedThreadId = +params['threadId']
  58           this.processHighlightedThread(highlightedThreadId)
  59         }
  60       }
  61     )
  62   }
  63
  64   ngOnChanges (changes: SimpleChanges) {
  65     if (changes['video']) {
  66       this.resetVideo()
  67     }
  68   }
  69
  70   ngOnDestroy () {
  71     if (this.sub) this.sub.unsubscribe()
  72   }
  73
  74   viewReplies (commentId: number, highlightThread = false) {
  75     this.threadLoading[commentId] = true
  76
  77     this.videoCommentService.getVideoThreadComments(this.video.id, commentId)
  78       .subscribe(
  79         res => {
  80           this.threadComments[commentId] = res
  81           this.threadLoading[commentId] = false
  82
  83           if (highlightThread) {
  84             this.highlightedThread = new VideoComment(res.comment)
  85
  86             // Scroll to the highlighted thread
  87             setTimeout(() => {
  88               // -60 because of the fixed header
  89               const scrollY = this.commentHighlightBlock.nativeElement.offsetTop - 60
  90               window.scroll(0, scrollY)
  91             }, 500)
  92           }
  93         },
  94
  95         err => this.notificationsService.error(this.i18n('Error'), err.message)
  96       )
  97   }
  98
  99   loadMoreComments () {
 100     this.videoCommentService.getVideoCommentThreads(this.video.id, this.componentPagination, this.sort)
 101       .subscribe(
 102         res => {
 103           this.comments = this.comments.concat(res.comments)
 104           this.componentPagination.totalItems = res.totalComments
 105         },
 106
 107         err => this.notificationsService.error(this.i18n('Error'), err.message)
 108       )
 109   }
 110
 111   onCommentThreadCreated (comment: VideoComment) {
 112     this.comments.unshift(comment)
 113   }
 114
 115   onWantedToReply (comment: VideoComment) {
 116     this.inReplyToCommentId = comment.id
 117   }
 118
 119   onResetReply () {
 120     this.inReplyToCommentId = undefined
 121   }
 122
 123   onThreadCreated (commentTree: VideoCommentThreadTree) {
 124     this.viewReplies(commentTree.comment.id)
 125   }
 126
 127   async onWantedToDelete (commentToDelete: VideoComment) {
 128     let message = 'Do you really want to delete this comment?'
 129     if (commentToDelete.totalReplies !== 0) {
 130       message += this.i18n(' {{totalReplies}} replies will be deleted too.', { totalReplies: commentToDelete.totalReplies })
 131     }
 132
 133     const res = await this.confirmService.confirm(message, this.i18n('Delete'))
 134     if (res === false) return
 135
 136     this.videoCommentService.deleteVideoComment(commentToDelete.videoId, commentToDelete.id)
 137       .subscribe(
 138         () => {
 139           // Delete the comment in the tree
 140           if (commentToDelete.inReplyToCommentId) {
 141             const thread = this.threadComments[commentToDelete.threadId]
 142             if (!thread) {
 143               console.error(`Cannot find thread ${commentToDelete.threadId} of the comment to delete ${commentToDelete.id}`)
 144               return
 145             }
 146
 147             this.deleteLocalCommentThread(thread, commentToDelete)
 148             return
 149           }
 150
 151           // Delete the thread
 152           this.comments = this.comments.filter(c => c.id !== commentToDelete.id)
 153           this.componentPagination.totalItems--
 154
 155           if (this.highlightedThread.id === commentToDelete.id) this.highlightedThread = undefined
 156         },
 157
 158         err => this.notificationsService.error(this.i18n('Error'), err.message)
 159       )
 160   }
 161
 162   isUserLoggedIn () {
 163     return this.authService.isLoggedIn()
 164   }
 165
 166   onNearOfBottom () {
 167     this.componentPagination.currentPage++
 168
 169     if (this.hasMoreComments()) {
 170       this.loadMoreComments()
 171     }
 172   }
 173
 174   private hasMoreComments () {
 175     // No results
 176     if (this.componentPagination.totalItems === 0) return false
 177
 178     // Not loaded yet
 179     if (!this.componentPagination.totalItems) return true
 180
 181     const maxPage = this.componentPagination.totalItems / this.componentPagination.itemsPerPage
 182     return maxPage > this.componentPagination.currentPage
 183   }
 184
 185   private deleteLocalCommentThread (parentComment: VideoCommentThreadTree, commentToDelete: VideoComment) {
 186     for (const commentChild of parentComment.children) {
 187       if (commentChild.comment.id === commentToDelete.id) {
 188         parentComment.children = parentComment.children.filter(c => c.comment.id !== commentToDelete.id)
 189         return
 190       }
 191
 192       this.deleteLocalCommentThread(commentChild, commentToDelete)
 193     }
 194   }
 195
 196   private resetVideo () {
 197     if (this.video.commentsEnabled === true) {
 198       // Reset all our fields
 199       this.highlightedThread = null
 200       this.comments = []
 201       this.threadComments = {}
 202       this.threadLoading = {}
 203       this.inReplyToCommentId = undefined
 204       this.componentPagination.currentPage = 1
 205       this.componentPagination.totalItems = null
 206
 207       this.syndicationItems = this.videoCommentService.getVideoCommentsFeeds(this.video.uuid)
 208
 209       this.loadMoreComments()
 210     }
 211   }
 212
 213   private processHighlightedThread (highlightedThreadId: number) {
 214     this.highlightedThread = this.comments.find(c => c.id === highlightedThreadId)
 215
 216     const highlightThread = true
 217     this.viewReplies(highlightedThreadId, highlightThread)
 218   }
 219 }