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 import { PluginService } from '@app/core/plugins/plugin.service'
  15
  16 @Component({
  17   selector: 'my-search',
  18   styleUrls: [ './search.component.scss' ],
  19   templateUrl: './search.component.html'
  20 })
  21 export class SearchComponent implements OnInit, OnDestroy {
  22   results: (Video | VideoChannel)[] = []
  23
  24   pagination: ComponentPagination = {
  25     currentPage: 1,
  26     itemsPerPage: 10, // Only for videos, use another variable for channels
  27     totalItems: null
  28   }
  29   advancedSearch: AdvancedSearch = new AdvancedSearch()
  30   isSearchFilterCollapsed = true
  31   currentSearch: string
  32
  33   private subActivatedRoute: Subscription
  34   private isInitialLoad = false // set to false to show the search filters on first arrival
  35   private firstSearch = true
  36
  37   private channelsPerPage = 2
  38
  39   constructor (
  40     private i18n: I18n,
  41     private route: ActivatedRoute,
  42     private router: Router,
  43     private metaService: MetaService,
  44     private notifier: Notifier,
  45     private searchService: SearchService,
  46     private authService: AuthService,
  47     private hooks: HooksService,
  48     private pluginService: PluginService
  49   ) { }
  50
  51   get user () {
  52     return this.authService.getUser()
  53   }
  54
  55   ngOnInit () {
  56     this.pluginService.loadPluginsByScope('search')
  57
  58     this.subActivatedRoute = this.route.queryParams.subscribe(
  59       queryParams => {
  60         const querySearch = queryParams['search']
  61
  62         // Search updated, reset filters
  63         if (this.currentSearch !== querySearch) {
  64           this.resetPagination()
  65           this.advancedSearch.reset()
  66
  67           this.currentSearch = querySearch || undefined
  68           this.updateTitle()
  69         }
  70
  71         this.advancedSearch = new AdvancedSearch(queryParams)
  72
  73         // Don't hide filters if we have some of them AND the user just came on the webpage
  74         this.isSearchFilterCollapsed = this.isInitialLoad === false || !this.advancedSearch.containsValues()
  75         this.isInitialLoad = false
  76
  77         this.search()
  78       },
  79
  80       err => this.notifier.error(err.text)
  81     )
  82
  83     this.hooks.runAction('action:search.init')
  84   }
  85
  86   ngOnDestroy () {
  87     if (this.subActivatedRoute) this.subActivatedRoute.unsubscribe()
  88   }
  89
  90   isVideoChannel (d: VideoChannel | Video): d is VideoChannel {
  91     return d instanceof VideoChannel
  92   }
  93
  94   isVideo (v: VideoChannel | Video): v is Video {
  95     return v instanceof Video
  96   }
  97
  98   isUserLoggedIn () {
  99     return this.authService.isLoggedIn()
 100   }
 101
 102   search () {
 103     forkJoin([
 104       this.getVideosObs(),
 105       this.getVideoChannelObs()
 106     ])
 107       .subscribe(
 108         ([ videosResult, videoChannelsResult ]) => {
 109           this.results = this.results
 110                              .concat(videoChannelsResult.data)
 111                              .concat(videosResult.data)
 112           this.pagination.totalItems = videosResult.total + videoChannelsResult.total
 113
 114           // Focus on channels if there are no enough videos
 115           if (this.firstSearch === true && videosResult.data.length < this.pagination.itemsPerPage) {
 116             this.resetPagination()
 117             this.firstSearch = false
 118
 119             this.channelsPerPage = 10
 120             this.search()
 121           }
 122
 123           this.firstSearch = false
 124         },
 125
 126         err => this.notifier.error(err.message)
 127       )
 128   }
 129
 130   onNearOfBottom () {
 131     // Last page
 132     if (this.pagination.totalItems <= (this.pagination.currentPage * this.pagination.itemsPerPage)) return
 133
 134     this.pagination.currentPage += 1
 135     this.search()
 136   }
 137
 138   onFiltered () {
 139     this.resetPagination()
 140
 141     this.updateUrlFromAdvancedSearch()
 142   }
 143
 144   numberOfFilters () {
 145     return this.advancedSearch.size()
 146   }
 147
 148   removeVideoFromArray (video: Video) {
 149     this.results = this.results.filter(r => !this.isVideo(r) || r.id !== video.id)
 150   }
 151
 152   private resetPagination () {
 153     this.pagination.currentPage = 1
 154     this.pagination.totalItems = null
 155     this.channelsPerPage = 2
 156
 157     this.results = []
 158   }
 159
 160   private updateTitle () {
 161     const suffix = this.currentSearch ? ' ' + this.currentSearch : ''
 162     this.metaService.setTitle(this.i18n('Search') + suffix)
 163   }
 164
 165   private updateUrlFromAdvancedSearch () {
 166     const search = this.currentSearch || undefined
 167
 168     this.router.navigate([], {
 169       relativeTo: this.route,
 170       queryParams: Object.assign({}, this.advancedSearch.toUrlObject(), { search })
 171     })
 172   }
 173
 174   private getVideosObs () {
 175     const params = {
 176       search: this.currentSearch,
 177       componentPagination: this.pagination,
 178       advancedSearch: this.advancedSearch
 179     }
 180
 181     return this.hooks.wrapObsFun(
 182       this.searchService.searchVideos.bind(this.searchService),
 183       params,
 184       'search',
 185       'filter:api.search.videos.list.params',
 186       'filter:api.search.videos.list.result'
 187     )
 188   }
 189
 190   private getVideoChannelObs () {
 191     const params = {
 192       search: this.currentSearch,
 193       componentPagination: immutableAssign(this.pagination, { itemsPerPage: this.channelsPerPage })
 194     }
 195
 196     return this.hooks.wrapObsFun(
 197       this.searchService.searchVideoChannels.bind(this.searchService),
 198       params,
 199       'search',
 200       'filter:api.search.video-channels.list.params',
 201       'filter:api.search.video-channels.list.result'
 202     )
 203   }
 204 }