import { logger, loggerTagsFactory } from '@server/helpers/logger' import { MVideo } from '@server/types/models' import { VideoViewEvent } from '@shared/models' import { VideoViewerCounters, VideoViewerStats, VideoViews } from './shared' /** * If processing a local view: * - We update viewer information (segments watched, watch time etc) * - We add +1 to video viewers counter if this is a new viewer * - We add +1 to video views counter if this is a new view and if the user watched enough seconds * - We send AP message to notify about this viewer and this view * - We update last video time for the user if authenticated * * If processing a remote view: * - We add +1 to video viewers counter * - We add +1 to video views counter * * A viewer is a someone that watched one or multiple sections of a video * A viewer that watched only a few seconds of a video may not increment the video views counter * Viewers statistics are sent to origin instance using the `WatchAction` ActivityPub object * */ const lTags = loggerTagsFactory('views') export class VideoViewsManager { private static instance: VideoViewsManager private videoViewerStats: VideoViewerStats private videoViewerCounters: VideoViewerCounters private videoViews: VideoViews private constructor () { } init () { this.videoViewerStats = new VideoViewerStats() this.videoViewerCounters = new VideoViewerCounters() this.videoViews = new VideoViews() } async processLocalView (options: { video: MVideo currentTime: number ip: string | null viewEvent?: VideoViewEvent }) { const { video, ip, viewEvent, currentTime } = options logger.debug('Processing local view for %s and ip %s.', video.url, ip, lTags()) await this.videoViewerStats.addLocalViewer({ video, ip, viewEvent, currentTime }) const successViewer = await this.videoViewerCounters.addLocalViewer({ video, ip }) // Do it after added local viewer to fetch updated information const watchTime = await this.videoViewerStats.getWatchTime(video.id, ip) const successView = await this.videoViews.addLocalView({ video, watchTime, ip }) return { successView, successViewer } } async processRemoteView (options: { video: MVideo viewerId: string | null viewerExpires?: Date }) { const { video, viewerId, viewerExpires } = options logger.debug('Processing remote view for %s.', video.url, { viewerExpires, viewerId, ...lTags() }) if (viewerExpires) await this.videoViewerCounters.addRemoteViewer({ video, viewerId, viewerExpires }) else await this.videoViews.addRemoteView({ video }) } getViewers (video: MVideo) { return this.videoViewerCounters.getViewers(video) } buildViewerExpireTime () { return this.videoViewerCounters.buildViewerExpireTime() } processViewerStats () { return this.videoViewerStats.processViewerStats() } static get Instance () { return this.instance || (this.instance = new this()) } }