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, 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
  80   ngOnDestroy () {
  81     if (this.subActivatedRoute) this.subActivatedRoute.unsubscribe()
  82   }
  83
  84   isVideoChannel (d: VideoChannel | Video): d is VideoChannel {
  85     return d instanceof VideoChannel
  86   }
  87
  88   isVideo (v: VideoChannel | Video): v is Video {
  89     return v instanceof Video
  90   }
  91
  92   isUserLoggedIn () {
  93     return this.authService.isLoggedIn()
  94   }
  95
  96   search () {
  97     forkJoin([
  98       this.getVideosObs(),
  99       this.getVideoChannelObs()
 100     ])
 101       .subscribe(
 102         ([ videosResult, videoChannelsResult ]) => {
 103           this.results = this.results
 104                              .concat(videoChannelsResult.data)
 105                              .concat(videosResult.data)
 106           this.pagination.totalItems = videosResult.total + videoChannelsResult.total
 107
 108           // Focus on channels if there are no enough videos
 109           if (this.firstSearch === true && videosResult.data.length < this.pagination.itemsPerPage) {
 110             this.resetPagination()
 111             this.firstSearch = false
 112
 113             this.channelsPerPage = 10
 114             this.search()
 115           }
 116
 117           this.firstSearch = false
 118         },
 119
 120         err => this.notifier.error(err.message)
 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   removeVideoFromArray (video: Video) {
 143     this.results = this.results.filter(r => !this.isVideo(r) || r.id !== video.id)
 144   }
 145
 146   private resetPagination () {
 147     this.pagination.currentPage = 1
 148     this.pagination.totalItems = null
 149     this.channelsPerPage = 2
 150
 151     this.results = []
 152   }
 153
 154   private updateTitle () {
 155     const suffix = this.currentSearch ? ' ' + this.currentSearch : ''
 156     this.metaService.setTitle(this.i18n('Search') + suffix)
 157   }
 158
 159   private updateUrlFromAdvancedSearch () {
 160     const search = this.currentSearch || undefined
 161
 162     this.router.navigate([], {
 163       relativeTo: this.route,
 164       queryParams: Object.assign({}, this.advancedSearch.toUrlObject(), { search })
 165     })
 166   }
 167
 168   private getVideosObs () {
 169     const params = {
 170       search: this.currentSearch,
 171       componentPagination: this.pagination,
 172       advancedSearch: this.advancedSearch
 173     }
 174
 175     return this.hooks.wrapObsFun(
 176       this.searchService.searchVideos.bind(this.searchService),
 177       params,
 178       'common',
 179       'filter:api.search.videos.list.params',
 180       'filter:api.search.videos.list.result'
 181     )
 182   }
 183
 184   private getVideoChannelObs () {
 185     const params = {
 186       search: this.currentSearch,
 187       componentPagination: immutableAssign(this.pagination, { itemsPerPage: this.channelsPerPage })
 188     }
 189
 190     return this.hooks.wrapObsFun(
 191       this.searchService.searchVideoChannels.bind(this.searchService),
 192       params,
 193       'common',
 194       'filter:api.search.video-channels.list.params',
 195       'filter:api.search.video-channels.list.result'
 196     )
 197   }
 198 }