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 } from '@app/core'
   4 import { forkJoin, of, 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 import { HooksService } from '@app/core/plugins/hooks.service'
  14
  15 @Component({
  16   selector: 'my-search',
  17   styleUrls: [ './search.component.scss' ],
  18   templateUrl: './search.component.html'
  19 })
  20 export class SearchComponent implements OnInit, OnDestroy {
  21   results: (Video | VideoChannel)[] = []
  22
  23   pagination: ComponentPagination = {
  24     currentPage: 1,
  25     itemsPerPage: 10, // Only for videos, use another variable for channels
  26     totalItems: null
  27   }
  28   advancedSearch: AdvancedSearch = new AdvancedSearch()
  29   isSearchFilterCollapsed = true
  30   currentSearch: string
  31
  32   private subActivatedRoute: Subscription
  33   private isInitialLoad = false // set to false to show the search filters on first arrival
  34   private firstSearch = true
  35
  36   private channelsPerPage = 2
  37
  38   constructor (
  39     private i18n: I18n,
  40     private route: ActivatedRoute,
  41     private router: Router,
  42     private metaService: MetaService,
  43     private notifier: Notifier,
  44     private searchService: SearchService,
  45     private authService: AuthService,
  46     private hooks: HooksService
  47   ) { }
  48
  49   get user () {
  50     return this.authService.getUser()
  51   }
  52
  53   ngOnInit () {
  54     this.subActivatedRoute = this.route.queryParams.subscribe(
  55       queryParams => {
  56         const querySearch = queryParams['search']
  57
  58         // Search updated, reset filters
  59         if (this.currentSearch !== querySearch) {
  60           this.resetPagination()
  61           this.advancedSearch.reset()
  62
  63           this.currentSearch = querySearch || undefined
  64           this.updateTitle()
  65         }
  66
  67         this.advancedSearch = new AdvancedSearch(queryParams)
  68
  69         // Don't hide filters if we have some of them AND the user just came on the webpage
  70         this.isSearchFilterCollapsed = this.isInitialLoad === false || !this.advancedSearch.containsValues()
  71         this.isInitialLoad = false
  72
  73         this.search()
  74       },
  75
  76       err => this.notifier.error(err.text)
  77     )
  78
  79     this.hooks.runAction('action:search.init', 'search')
  80   }
  81
  82   ngOnDestroy () {
  83     if (this.subActivatedRoute) this.subActivatedRoute.unsubscribe()
  84   }
  85
  86   isVideoChannel (d: VideoChannel | Video): d is VideoChannel {
  87     return d instanceof VideoChannel
  88   }
  89
  90   isVideo (v: VideoChannel | Video): v is Video {
  91     return v instanceof Video
  92   }
  93
  94   isUserLoggedIn () {
  95     return this.authService.isLoggedIn()
  96   }
  97
  98   search () {
  99     forkJoin([
 100       this.getVideosObs(),
 101       this.getVideoChannelObs()
 102     ])
 103       .subscribe(
 104         ([ videosResult, videoChannelsResult ]) => {
 105           this.results = this.results
 106                              .concat(videoChannelsResult.data)
 107                              .concat(videosResult.data)
 108           this.pagination.totalItems = videosResult.total + videoChannelsResult.total
 109
 110           // Focus on channels if there are no enough videos
 111           if (this.firstSearch === true && videosResult.data.length < this.pagination.itemsPerPage) {
 112             this.resetPagination()
 113             this.firstSearch = false
 114
 115             this.channelsPerPage = 10
 116             this.search()
 117           }
 118
 119           this.firstSearch = false
 120         },
 121
 122         err => this.notifier.error(err.message)
 123       )
 124   }
 125
 126   onNearOfBottom () {
 127     // Last page
 128     if (this.pagination.totalItems <= (this.pagination.currentPage * this.pagination.itemsPerPage)) return
 129
 130     this.pagination.currentPage += 1
 131     this.search()
 132   }
 133
 134   onFiltered () {
 135     this.resetPagination()
 136
 137     this.updateUrlFromAdvancedSearch()
 138   }
 139
 140   numberOfFilters () {
 141     return this.advancedSearch.size()
 142   }
 143
 144   removeVideoFromArray (video: Video) {
 145     this.results = this.results.filter(r => !this.isVideo(r) || r.id !== video.id)
 146   }
 147
 148   private resetPagination () {
 149     this.pagination.currentPage = 1
 150     this.pagination.totalItems = null
 151     this.channelsPerPage = 2
 152
 153     this.results = []
 154   }
 155
 156   private updateTitle () {
 157     const suffix = this.currentSearch ? ' ' + this.currentSearch : ''
 158     this.metaService.setTitle(this.i18n('Search') + suffix)
 159   }
 160
 161   private updateUrlFromAdvancedSearch () {
 162     const search = this.currentSearch || undefined
 163
 164     this.router.navigate([], {
 165       relativeTo: this.route,
 166       queryParams: Object.assign({}, this.advancedSearch.toUrlObject(), { search })
 167     })
 168   }
 169
 170   private getVideosObs () {
 171     const params = {
 172       search: this.currentSearch,
 173       componentPagination: this.pagination,
 174       advancedSearch: this.advancedSearch
 175     }
 176
 177     return this.hooks.wrapObsFun(
 178       this.searchService.searchVideos.bind(this.searchService),
 179       params,
 180       'search',
 181       'filter:api.search.videos.list.params',
 182       'filter:api.search.videos.list.result'
 183     )
 184   }
 185
 186   private getVideoChannelObs () {
 187     if (!this.currentSearch) return of({ data: [], total: 0 })
 188
 189     const params = {
 190       search: this.currentSearch,
 191       componentPagination: immutableAssign(this.pagination, { itemsPerPage: this.channelsPerPage })
 192     }
 193
 194     return this.hooks.wrapObsFun(
 195       this.searchService.searchVideoChannels.bind(this.searchService),
 196       params,
 197       'search',
 198       'filter:api.search.video-channels.list.params',
 199       'filter:api.search.video-channels.list.result'
 200     )
 201   }
 202 }