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 { 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
  13 @Component({
  14   selector: 'my-search',
  15   styleUrls: [ './search.component.scss' ],
  16   templateUrl: './search.component.html'
  17 })
  18 export class SearchComponent implements OnInit, OnDestroy {
  19   videos: Video[] = []
  20   pagination: ComponentPagination = {
  21     currentPage: 1,
  22     itemsPerPage: 10, // It's per object type (so 10 videos, 10 video channels etc)
  23     totalItems: null
  24   }
  25   advancedSearch: AdvancedSearch = new AdvancedSearch()
  26   isSearchFilterCollapsed = true
  27
  28   private subActivatedRoute: Subscription
  29   private currentSearch: string
  30   private isInitialLoad = true
  31
  32   constructor (
  33     private i18n: I18n,
  34     private route: ActivatedRoute,
  35     private router: Router,
  36     private metaService: MetaService,
  37     private redirectService: RedirectService,
  38     private notificationsService: NotificationsService,
  39     private searchService: SearchService
  40   ) { }
  41
  42   ngOnInit () {
  43     this.subActivatedRoute = this.route.queryParams.subscribe(
  44       queryParams => {
  45         const querySearch = queryParams['search']
  46
  47         // New empty search
  48         if (this.currentSearch && !querySearch) return this.redirectService.redirectToHomepage()
  49
  50         // Search updated, reset filters
  51         if (this.currentSearch !== querySearch) {
  52           this.resetPagination()
  53           this.advancedSearch.reset()
  54
  55           this.currentSearch = querySearch
  56           this.updateTitle()
  57         }
  58
  59         this.advancedSearch = new AdvancedSearch(queryParams)
  60
  61         // Don't hide filters if we have some of them AND the user just came on the webpage
  62         this.isSearchFilterCollapsed = this.isInitialLoad === false || !this.advancedSearch.containsValues()
  63         this.isInitialLoad = false
  64
  65         this.search()
  66       },
  67
  68       err => this.notificationsService.error('Error', err.text)
  69     )
  70   }
  71
  72   ngOnDestroy () {
  73     if (this.subActivatedRoute) this.subActivatedRoute.unsubscribe()
  74   }
  75
  76   search () {
  77     return this.searchService.searchVideos(this.currentSearch, this.pagination, this.advancedSearch)
  78       .subscribe(
  79         ({ videos, totalVideos }) => {
  80           this.videos = this.videos.concat(videos)
  81           this.pagination.totalItems = totalVideos
  82         },
  83
  84         error => {
  85           this.notificationsService.error(this.i18n('Error'), error.message)
  86         }
  87       )
  88   }
  89
  90   onNearOfBottom () {
  91     // Last page
  92     if (this.pagination.totalItems <= (this.pagination.currentPage * this.pagination.itemsPerPage)) return
  93
  94     this.pagination.currentPage += 1
  95     this.search()
  96   }
  97
  98   onFiltered () {
  99     this.resetPagination()
 100
 101     this.updateUrlFromAdvancedSearch()
 102   }
 103
 104   private resetPagination () {
 105     this.pagination.currentPage = 1
 106     this.pagination.totalItems = null
 107
 108     this.videos = []
 109   }
 110
 111   private updateTitle () {
 112     this.metaService.setTitle(this.i18n('Search') + ' ' + this.currentSearch)
 113   }
 114
 115   private updateUrlFromAdvancedSearch () {
 116     this.router.navigate([], {
 117       relativeTo: this.route,
 118       queryParams: Object.assign({}, this.advancedSearch.toUrlObject(), { search: this.currentSearch })
 119     })
 120   }
 121 }