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

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