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

   1 import { Component, OnDestroy, OnInit } from '@angular/core'
   2 import { ActivatedRoute, Router } from '@angular/router'
   3 import { RedirectService } from '@app/core'
   4 import { NotificationsService } from 'angular2-notifications'
   5 import { forkJoin, Subscription } from 'rxjs'
   6 import { SearchService } from '@app/search/search.service'
   7 import { ComponentPagination } from '@app/shared/rest/component-pagination.model'
   8 import { I18n } from '@ngx-translate/i18n-polyfill'
   9 import { Video } from '../../../../shared'
  10 import { MetaService } from '@ngx-meta/core'
  11 import { AdvancedSearch } from '@app/search/advanced-search.model'
  12 import { VideoChannel } from '@app/shared/video-channel/video-channel.model'
  13 import { immutableAssign } from '@app/shared/misc/utils'
  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   videos: Video[] = []
  22   videoChannels: 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 = 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 redirectService: RedirectService,
  44     private notificationsService: NotificationsService,
  45     private searchService: SearchService
  46   ) { }
  47
  48   ngOnInit () {
  49     this.subActivatedRoute = this.route.queryParams.subscribe(
  50       queryParams => {
  51         const querySearch = queryParams['search']
  52
  53         // New empty search
  54         if (this.currentSearch && !querySearch) return this.redirectService.redirectToHomepage()
  55
  56         // Search updated, reset filters
  57         if (this.currentSearch !== querySearch) {
  58           this.resetPagination()
  59           this.advancedSearch.reset()
  60
  61           this.currentSearch = querySearch
  62           this.updateTitle()
  63         }
  64
  65         this.advancedSearch = new AdvancedSearch(queryParams)
  66
  67         // Don't hide filters if we have some of them AND the user just came on the webpage
  68         this.isSearchFilterCollapsed = this.isInitialLoad === false || !this.advancedSearch.containsValues()
  69         this.isInitialLoad = false
  70
  71         this.search()
  72       },
  73
  74       err => this.notificationsService.error('Error', err.text)
  75     )
  76   }
  77
  78   ngOnDestroy () {
  79     if (this.subActivatedRoute) this.subActivatedRoute.unsubscribe()
  80   }
  81
  82   search () {
  83     forkJoin([
  84       this.searchService.searchVideos(this.currentSearch, this.pagination, this.advancedSearch),
  85       this.searchService.searchVideoChannels(this.currentSearch, immutableAssign(this.pagination, { itemsPerPage: this.channelsPerPage }))
  86     ])
  87       .subscribe(
  88         ([ videosResult, videoChannelsResult ]) => {
  89           this.videos = this.videos.concat(videosResult.videos)
  90           this.pagination.totalItems = videosResult.totalVideos + videoChannelsResult.total
  91
  92           this.videoChannels = this.videoChannels.concat(videoChannelsResult.data)
  93
  94           // Focus on channels
  95           if (this.channelsPerPage !== 10 && this.videos.length < this.pagination.itemsPerPage) {
  96             this.resetPagination()
  97
  98             this.channelsPerPage = 10
  99             this.search()
 100           }
 101         },
 102
 103         error => {
 104           this.notificationsService.error(this.i18n('Error'), error.message)
 105         }
 106       )
 107
 108   }
 109
 110   onNearOfBottom () {
 111     // Last page
 112     if (this.pagination.totalItems <= (this.pagination.currentPage * this.pagination.itemsPerPage)) return
 113
 114     this.pagination.currentPage += 1
 115     this.search()
 116   }
 117
 118   onFiltered () {
 119     this.resetPagination()
 120
 121     this.updateUrlFromAdvancedSearch()
 122   }
 123
 124   private resetPagination () {
 125     this.pagination.currentPage = 1
 126     this.pagination.totalItems = null
 127     this.channelsPerPage = 2
 128
 129     this.videos = []
 130     this.videoChannels = []
 131   }
 132
 133   private updateTitle () {
 134     this.metaService.setTitle(this.i18n('Search') + ' ' + this.currentSearch)
 135   }
 136
 137   private updateUrlFromAdvancedSearch () {
 138     this.router.navigate([], {
 139       relativeTo: this.route,
 140       queryParams: Object.assign({}, this.advancedSearch.toUrlObject(), { search: this.currentSearch })
 141     })
 142   }
 143 }