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.subActivatedRoute = this.route.queryParams.subscribe(
  57       queryParams => {
  58         const querySearch = queryParams['search']
  59
  60         // Search updated, reset filters
  61         if (this.currentSearch !== querySearch) {
  62           this.resetPagination()
  63           this.advancedSearch.reset()
  64
  65           this.currentSearch = querySearch || undefined
  66           this.updateTitle()
  67         }
  68
  69         this.advancedSearch = new AdvancedSearch(queryParams)
  70
  71         // Don't hide filters if we have some of them AND the user just came on the webpage
  72         this.isSearchFilterCollapsed = this.isInitialLoad === false || !this.advancedSearch.containsValues()
  73         this.isInitialLoad = false
  74
  75         this.search()
  76       },
  77
  78       err => this.notifier.error(err.text)
  79     )
  80
  81     this.hooks.runAction('action:search.init', 'search')
  82   }
  83
  84   ngOnDestroy () {
  85     if (this.subActivatedRoute) this.subActivatedRoute.unsubscribe()
  86   }
  87
  88   isVideoChannel (d: VideoChannel | Video): d is VideoChannel {
  89     return d instanceof VideoChannel
  90   }
  91
  92   isVideo (v: VideoChannel | Video): v is Video {
  93     return v instanceof Video
  94   }
  95
  96   isUserLoggedIn () {
  97     return this.authService.isLoggedIn()
  98   }
  99
 100   search () {
 101     forkJoin([
 102       this.getVideosObs(),
 103       this.getVideoChannelObs()
 104     ])
 105       .subscribe(
 106         ([ videosResult, videoChannelsResult ]) => {
 107           this.results = this.results
 108                              .concat(videoChannelsResult.data)
 109                              .concat(videosResult.data)
 110           this.pagination.totalItems = videosResult.total + videoChannelsResult.total
 111
 112           // Focus on channels if there are no enough videos
 113           if (this.firstSearch === true && videosResult.data.length < this.pagination.itemsPerPage) {
 114             this.resetPagination()
 115             this.firstSearch = false
 116
 117             this.channelsPerPage = 10
 118             this.search()
 119           }
 120
 121           this.firstSearch = false
 122         },
 123
 124         err => this.notifier.error(err.message)
 125       )
 126   }
 127
 128   onNearOfBottom () {
 129     // Last page
 130     if (this.pagination.totalItems <= (this.pagination.currentPage * this.pagination.itemsPerPage)) return
 131
 132     this.pagination.currentPage += 1
 133     this.search()
 134   }
 135
 136   onFiltered () {
 137     this.resetPagination()
 138
 139     this.updateUrlFromAdvancedSearch()
 140   }
 141
 142   numberOfFilters () {
 143     return this.advancedSearch.size()
 144   }
 145
 146   removeVideoFromArray (video: Video) {
 147     this.results = this.results.filter(r => !this.isVideo(r) || r.id !== video.id)
 148   }
 149
 150   private resetPagination () {
 151     this.pagination.currentPage = 1
 152     this.pagination.totalItems = null
 153     this.channelsPerPage = 2
 154
 155     this.results = []
 156   }
 157
 158   private updateTitle () {
 159     const suffix = this.currentSearch ? ' ' + this.currentSearch : ''
 160     this.metaService.setTitle(this.i18n('Search') + suffix)
 161   }
 162
 163   private updateUrlFromAdvancedSearch () {
 164     const search = this.currentSearch || undefined
 165
 166     this.router.navigate([], {
 167       relativeTo: this.route,
 168       queryParams: Object.assign({}, this.advancedSearch.toUrlObject(), { search })
 169     })
 170   }
 171
 172   private getVideosObs () {
 173     const params = {
 174       search: this.currentSearch,
 175       componentPagination: this.pagination,
 176       advancedSearch: this.advancedSearch
 177     }
 178
 179     return this.hooks.wrapObsFun(
 180       this.searchService.searchVideos.bind(this.searchService),
 181       params,
 182       'search',
 183       'filter:api.search.videos.list.params',
 184       'filter:api.search.videos.list.result'
 185     )
 186   }
 187
 188   private getVideoChannelObs () {
 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 }