aboutsummaryrefslogtreecommitdiffhomepage
path: root/client/src/app/search/search.component.ts
blob: 911d5684371208d994cc42274901cae724fe2df1 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
import { Component, OnDestroy, OnInit } from '@angular/core'
import { ActivatedRoute, Router } from '@angular/router'
import { AuthService, RedirectService } from '@app/core'
import { NotificationsService } from 'angular2-notifications'
import { forkJoin, Subscription } from 'rxjs'
import { SearchService } from '@app/search/search.service'
import { ComponentPagination } from '@app/shared/rest/component-pagination.model'
import { I18n } from '@ngx-translate/i18n-polyfill'
import { MetaService } from '@ngx-meta/core'
import { AdvancedSearch } from '@app/search/advanced-search.model'
import { VideoChannel } from '@app/shared/video-channel/video-channel.model'
import { immutableAssign } from '@app/shared/misc/utils'
import { Video } from '@app/shared/video/video.model'

@Component({
  selector: 'my-search',
  styleUrls: [ './search.component.scss' ],
  templateUrl: './search.component.html'
})
export class SearchComponent implements OnInit, OnDestroy {
  results: (Video | VideoChannel)[] = []

  pagination: ComponentPagination = {
    currentPage: 1,
    itemsPerPage: 10, // Only for videos, use another variable for channels
    totalItems: null
  }
  advancedSearch: AdvancedSearch = new AdvancedSearch()
  isSearchFilterCollapsed = true
  currentSearch: string

  private subActivatedRoute: Subscription
  private isInitialLoad = false // set to false to show the search filters on first arrival
  private firstSearch = true

  private channelsPerPage = 2

  constructor (
    private i18n: I18n,
    private route: ActivatedRoute,
    private router: Router,
    private metaService: MetaService,
    private redirectService: RedirectService,
    private notificationsService: NotificationsService,
    private searchService: SearchService,
    private authService: AuthService
  ) { }

  ngOnInit () {
    this.subActivatedRoute = this.route.queryParams.subscribe(
      queryParams => {
        const querySearch = queryParams['search']

        // Search updated, reset filters
        if (this.currentSearch !== querySearch) {
          this.resetPagination()
          this.advancedSearch.reset()

          this.currentSearch = querySearch || undefined
          this.updateTitle()
        }

        this.advancedSearch = new AdvancedSearch(queryParams)

        // Don't hide filters if we have some of them AND the user just came on the webpage
        this.isSearchFilterCollapsed = this.isInitialLoad === false || !this.advancedSearch.containsValues()
        this.isInitialLoad = false

        this.search()
      },

      err => this.notificationsService.error('Error', err.text)
    )
  }

  ngOnDestroy () {
    if (this.subActivatedRoute) this.subActivatedRoute.unsubscribe()
  }

  isVideoChannel (d: VideoChannel | Video): d is VideoChannel {
    return d instanceof VideoChannel
  }

  isVideo (v: VideoChannel | Video): v is Video {
    return v instanceof Video
  }

  isUserLoggedIn () {
    return this.authService.isLoggedIn()
  }

  search () {
    forkJoin([
      this.searchService.searchVideos(this.currentSearch, this.pagination, this.advancedSearch),
      this.searchService.searchVideoChannels(this.currentSearch, immutableAssign(this.pagination, { itemsPerPage: this.channelsPerPage }))
    ])
      .subscribe(
        ([ videosResult, videoChannelsResult ]) => {
          this.results = this.results
                             .concat(videoChannelsResult.data)
                             .concat(videosResult.videos)
          this.pagination.totalItems = videosResult.totalVideos + videoChannelsResult.total

          // Focus on channels if there are no enough videos
          if (this.firstSearch === true && videosResult.videos.length < this.pagination.itemsPerPage) {
            this.resetPagination()
            this.firstSearch = false

            this.channelsPerPage = 10
            this.search()
          }

          this.firstSearch = false
        },

        error => {
          this.notificationsService.error(this.i18n('Error'), error.message)
        }
      )

  }

  onNearOfBottom () {
    // Last page
    if (this.pagination.totalItems <= (this.pagination.currentPage * this.pagination.itemsPerPage)) return

    this.pagination.currentPage += 1
    this.search()
  }

  onFiltered () {
    this.resetPagination()

    this.updateUrlFromAdvancedSearch()
  }

  numberOfFilters () {
    return this.advancedSearch.size()
  }

  private resetPagination () {
    this.pagination.currentPage = 1
    this.pagination.totalItems = null
    this.channelsPerPage = 2

    this.results = []
  }

  private updateTitle () {
    this.metaService.setTitle(this.i18n('Search') + ' ' + this.currentSearch)
  }

  private updateUrlFromAdvancedSearch () {
    const search = this.currentSearch || undefined

    this.router.navigate([], {
      relativeTo: this.route,
      queryParams: Object.assign({}, this.advancedSearch.toUrlObject(), { search })
    })
  }
}