1 import { Injectable } from '@angular/core'
2 import { RecommendationService } from '@app/videos/recommendations/recommendations.service'
3 import { Video } from '@app/shared/video/video.model'
4 import { RecommendationInfo } from '@app/shared/video/recommendation-info.model'
5 import { VideoService } from '@app/shared/video/video.service'
6 import { map } from 'rxjs/operators'
7 import { Observable } from 'rxjs'
8 import { SearchService } from '@app/search/search.service'
9 import { AdvancedSearch } from '@app/search/advanced-search.model'
12 * Provides "recommendations" by providing the most recently uploaded videos.
15 export class RecentVideosRecommendationService implements RecommendationService {
20 private videos: VideoService,
21 private searchService: SearchService
24 getRecommendations (recommendation: RecommendationInfo): Observable<Video[]> {
25 return this.fetchPage(1, recommendation)
28 const otherVideos = videos.filter(v => v.uuid !== recommendation.uuid)
29 return otherVideos.slice(0, this.pageSize)
34 private fetchPage (page: number, recommendation: RecommendationInfo): Observable<Video[]> {
35 let pagination = { currentPage: page, itemsPerPage: this.pageSize + 1 }
36 if (!recommendation.tags) {
37 return this.videos.getVideos(pagination, '-createdAt')
42 if (recommendation.tags.length === 0) {
43 return this.videos.getVideos(pagination, '-createdAt')
48 return this.searchService.searchVideos('',
50 new AdvancedSearch({ tagsOneOf: recommendation.tags.join(','), sort: '-createdAt' })