import { forkJoin, of, Subscription } from 'rxjs'
import { Component, OnDestroy, OnInit } from '@angular/core'
import { ActivatedRoute, Router } from '@angular/router'
import { AuthService, ComponentPagination, HooksService, Notifier, ServerService, User, UserService } from '@app/core'
import { immutableAssign } from '@app/helpers'
import { Video, VideoChannel } from '@app/shared/shared-main'
import { MiniatureDisplayOptions } from '@app/shared/shared-video-miniature'
import { MetaService } from '@ngx-meta/core'
import { I18n } from '@ngx-translate/i18n-polyfill'
import { SearchTargetType, ServerConfig } from '@shared/models'
import { AdvancedSearch } from './advanced-search.model'
import { SearchService } from './search.service'
@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
videoDisplayOptions: MiniatureDisplayOptions = {
date: true,
views: true,
by: true,
avatar: false,
privacyLabel: false,
privacyText: false,
state: false,
blacklistInfo: false
}
errorMessage: string
serverConfig: ServerConfig
userMiniature: User
private subActivatedRoute: Subscription
private isInitialLoad = false // set to false to show the search filters on first arrival
private firstSearch = true
private channelsPerPage = 2
private lastSearchTarget: SearchTargetType
constructor (
private i18n: I18n,
private route: ActivatedRoute,
private router: Router,
private metaService: MetaService,
private notifier: Notifier,
private searchService: SearchService,
private authService: AuthService,
private userService: UserService,
private hooks: HooksService,
private serverService: ServerService
) { }
ngOnInit () {
this.serverService.getConfig()
.subscribe(config => this.serverConfig = config)
this.subActivatedRoute = this.route.queryParams.subscribe(
async queryParams => {
const querySearch = queryParams['search']
const searchTarget = queryParams['searchTarget']
// Search updated, reset filters
if (this.currentSearch !== querySearch || searchTarget !== this.advancedSearch.searchTarget) {
this.resetPagination()
this.advancedSearch.reset()
this.currentSearch = querySearch || undefined
this.updateTitle()
}
this.advancedSearch = new AdvancedSearch(queryParams)
if (!this.advancedSearch.searchTarget) {
this.advancedSearch.searchTarget = await this.serverService.getDefaultSearchTarget()
}
// 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.notifier.error(err.text)
)
this.userService.getAnonymousOrLoggedUser()
.subscribe(user => this.userMiniature = user)
this.hooks.runAction('action:search.init', 'search')
}
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.getVideosObs(),
this.getVideoChannelObs()
]).subscribe(
([videosResult, videoChannelsResult]) => {
this.results = this.results
.concat(videoChannelsResult.data)
.concat(videosResult.data)
this.pagination.totalItems = videosResult.total + videoChannelsResult.total
this.lastSearchTarget = this.advancedSearch.searchTarget
// Focus on channels if there are no enough videos
if (this.firstSearch === true && videosResult.data.length < this.pagination.itemsPerPage) {
this.resetPagination()
this.firstSearch = false
this.channelsPerPage = 10
this.search()
}
this.firstSearch = false
},
err => {
if (this.advancedSearch.searchTarget !== 'search-index') {
this.notifier.error(err.message)
return
}
this.notifier.error(
this.i18n('Search index is unavailable. Retrying with instance results instead.'),
this.i18n('Search error')
)
this.advancedSearch.searchTarget = 'local'
this.search()
}
)
}
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()
}
// Add VideoChannel for typings, but the template already checks "video" argument is a video
removeVideoFromArray (video: Video | VideoChannel) {
this.results = this.results.filter(r => !this.isVideo(r) || r.id !== video.id)
}
getChannelUrl (channel: VideoChannel) {
if (this.advancedSearch.searchTarget === 'search-index' && channel.url) {
const remoteUriConfig = this.serverConfig.search.remoteUri
// Redirect on the external instance if not allowed to fetch remote data
const externalRedirect = (!this.authService.isLoggedIn() && !remoteUriConfig.anonymous) || !remoteUriConfig.users
const fromPath = window.location.pathname + window.location.search
return [ '/search/lazy-load-channel', { url: channel.url, externalRedirect, fromPath } ]
}
return [ '/video-channels', channel.nameWithHost ]
}
hideActions () {
return this.lastSearchTarget === 'search-index'
}
private resetPagination () {
this.pagination.currentPage = 1
this.pagination.totalItems = null
this.channelsPerPage = 2
this.results = []
}
private updateTitle () {
const suffix = this.currentSearch ? ' ' + this.currentSearch : ''
this.metaService.setTitle(this.i18n('Search') + suffix)
}
private updateUrlFromAdvancedSearch () {
const search = this.currentSearch || undefined
this.router.navigate([], {
relativeTo: this.route,
queryParams: Object.assign({}, this.advancedSearch.toUrlObject(), { search })
})
}
private getVideosObs () {
const params = {
search: this.currentSearch,
componentPagination: this.pagination,
advancedSearch: this.advancedSearch
}
return this.hooks.wrapObsFun(
this.searchService.searchVideos.bind(this.searchService),
params,
'search',
'filter:api.search.videos.list.params',
'filter:api.search.videos.list.result'
)
}
private getVideoChannelObs () {
if (!this.currentSearch) return of({ data: [], total: 0 })
const params = {
search: this.currentSearch,
componentPagination: immutableAssign(this.pagination, { itemsPerPage: this.channelsPerPage }),
searchTarget: this.advancedSearch.searchTarget
}
return this.hooks.wrapObsFun(
this.searchService.searchVideoChannels.bind(this.searchService),
params,
'search',
'filter:api.search.video-channels.list.params',
'filter:api.search.video-channels.list.result'
)
}
}