client/src/app/search/search.component.ts

   1 import { Component, OnDestroy, OnInit } from '@angular/core'
   2 import { ActivatedRoute, Router } from '@angular/router'
   3 import { AuthService, Notifier, ServerService } from '@app/core'
   4 import { forkJoin, Subscription } from 'rxjs'
   5 import { SearchService } from '@app/search/search.service'
   6 import { ComponentPagination } from '@app/shared/rest/component-pagination.model'
   7 import { I18n } from '@ngx-translate/i18n-polyfill'
   8 import { MetaService } from '@ngx-meta/core'
   9 import { AdvancedSearch } from '@app/search/advanced-search.model'
  10 import { VideoChannel } from '@app/shared/video-channel/video-channel.model'
  11 import { immutableAssign } from '@app/shared/misc/utils'
  12 import { Video } from '@app/shared/video/video.model'
  13
  14 @Component({
  15   selector: 'my-search',
  16   styleUrls: [ './search.component.scss' ],
  17   templateUrl: './search.component.html'
  18 })
  19 export class SearchComponent implements OnInit, OnDestroy {
  20   results: (Video | VideoChannel)[] = []
  21
  22   pagination: ComponentPagination = {
  23     currentPage: 1,
  24     itemsPerPage: 10, // Only for videos, use another variable for channels
  25     totalItems: null
  26   }
  27   advancedSearch: AdvancedSearch = new AdvancedSearch()
  28   isSearchFilterCollapsed = true
  29   currentSearch: string
  30
  31   private subActivatedRoute: Subscription
  32   private isInitialLoad = false // set to false to show the search filters on first arrival
  33   private firstSearch = true
  34
  35   private channelsPerPage = 2
  36
  37   constructor (
  38     private i18n: I18n,
  39     private route: ActivatedRoute,
  40     private router: Router,
  41     private metaService: MetaService,
  42     private notifier: Notifier,
  43     private searchService: SearchService,
  44     private authService: AuthService,
  45     private serverService: ServerService
  46   ) { }
  47
  48   ngOnInit () {
  49     this.subActivatedRoute = this.route.queryParams.subscribe(
  50       queryParams => {
  51         const querySearch = queryParams['search']
  52
  53         // Search updated, reset filters
  54         if (this.currentSearch !== querySearch) {
  55           this.resetPagination()
  56           this.advancedSearch.reset()
  57
  58           this.currentSearch = querySearch || undefined
  59           this.updateTitle()
  60         }
  61
  62         this.advancedSearch = new AdvancedSearch(queryParams)
  63
  64         // Don't hide filters if we have some of them AND the user just came on the webpage
  65         this.isSearchFilterCollapsed = this.isInitialLoad === false || !this.advancedSearch.containsValues()
  66         this.isInitialLoad = false
  67
  68         this.search()
  69       },
  70
  71       err => this.notifier.error(err.text)
  72     )
  73   }
  74
  75   ngOnDestroy () {
  76     if (this.subActivatedRoute) this.subActivatedRoute.unsubscribe()
  77   }
  78
  79   isVideoBlur (video: Video) {
  80     return video.isVideoNSFWForUser(this.authService.getUser(), this.serverService.getConfig())
  81   }
  82
  83   isVideoChannel (d: VideoChannel | Video): d is VideoChannel {
  84     return d instanceof VideoChannel
  85   }
  86
  87   isVideo (v: VideoChannel | Video): v is Video {
  88     return v instanceof Video
  89   }
  90
  91   isUserLoggedIn () {
  92     return this.authService.isLoggedIn()
  93   }
  94
  95   search () {
  96     forkJoin([
  97       this.searchService.searchVideos(this.currentSearch, this.pagination, this.advancedSearch),
  98       this.searchService.searchVideoChannels(this.currentSearch, immutableAssign(this.pagination, { itemsPerPage: this.channelsPerPage }))
  99     ])
 100       .subscribe(
 101         ([ videosResult, videoChannelsResult ]) => {
 102           this.results = this.results
 103                              .concat(videoChannelsResult.data)
 104                              .concat(videosResult.videos)
 105           this.pagination.totalItems = videosResult.totalVideos + videoChannelsResult.total
 106
 107           // Focus on channels if there are no enough videos
 108           if (this.firstSearch === true && videosResult.videos.length < this.pagination.itemsPerPage) {
 109             this.resetPagination()
 110             this.firstSearch = false
 111
 112             this.channelsPerPage = 10
 113             this.search()
 114           }
 115
 116           this.firstSearch = false
 117         },
 118
 119         err => this.notifier.error(err.message)
 120       )
 121
 122   }
 123
 124   onNearOfBottom () {
 125     // Last page
 126     if (this.pagination.totalItems <= (this.pagination.currentPage * this.pagination.itemsPerPage)) return
 127
 128     this.pagination.currentPage += 1
 129     this.search()
 130   }
 131
 132   onFiltered () {
 133     this.resetPagination()
 134
 135     this.updateUrlFromAdvancedSearch()
 136   }
 137
 138   numberOfFilters () {
 139     return this.advancedSearch.size()
 140   }
 141
 142   private resetPagination () {
 143     this.pagination.currentPage = 1
 144     this.pagination.totalItems = null
 145     this.channelsPerPage = 2
 146
 147     this.results = []
 148   }
 149
 150   private updateTitle () {
 151     const suffix = this.currentSearch ? ' ' + this.currentSearch : ''
 152     this.metaService.setTitle(this.i18n('Search') + suffix)
 153   }
 154
 155   private updateUrlFromAdvancedSearch () {
 156     const search = this.currentSearch || undefined
 157
 158     this.router.navigate([], {
 159       relativeTo: this.route,
 160       queryParams: Object.assign({}, this.advancedSearch.toUrlObject(), { search })
 161     })
 162   }
 163 }