client/src/app/app.component.ts

   1 import { Component, OnInit } from '@angular/core'
   2 import { DomSanitizer, SafeHtml } from '@angular/platform-browser'
   3 import { Event, GuardsCheckStart, NavigationEnd, Router, Scroll } from '@angular/router'
   4 import { AuthService, RedirectService, ServerService, ThemeService } from '@app/core'
   5 import { is18nPath } from '../../../shared/models/i18n'
   6 import { ScreenService } from '@app/shared/misc/screen.service'
   7 import { debounceTime, filter, map, pairwise, skip } from 'rxjs/operators'
   8 import { Hotkey, HotkeysService } from 'angular2-hotkeys'
   9 import { I18n } from '@ngx-translate/i18n-polyfill'
  10 import { fromEvent } from 'rxjs'
  11 import { ViewportScroller } from '@angular/common'
  12 import { PluginService } from '@app/core/plugins/plugin.service'
  13 import { HooksService } from '@app/core/plugins/hooks.service'
  14
  15 @Component({
  16   selector: 'my-app',
  17   templateUrl: './app.component.html',
  18   styleUrls: [ './app.component.scss' ]
  19 })
  20 export class AppComponent implements OnInit {
  21   isMenuDisplayed = true
  22   isMenuChangedByUser = false
  23
  24   customCSS: SafeHtml
  25
  26   constructor (
  27     private i18n: I18n,
  28     private viewportScroller: ViewportScroller,
  29     private router: Router,
  30     private authService: AuthService,
  31     private serverService: ServerService,
  32     private pluginService: PluginService,
  33     private domSanitizer: DomSanitizer,
  34     private redirectService: RedirectService,
  35     private screenService: ScreenService,
  36     private hotkeysService: HotkeysService,
  37     private themeService: ThemeService,
  38     private hooks: HooksService
  39   ) { }
  40
  41   get serverVersion () {
  42     return this.serverService.getConfig().serverVersion
  43   }
  44
  45   get serverCommit () {
  46     const commit = this.serverService.getConfig().serverCommit || ''
  47     return (commit !== '') ? '...' + commit : commit
  48   }
  49
  50   get instanceName () {
  51     return this.serverService.getConfig().instance.name
  52   }
  53
  54   get defaultRoute () {
  55     return RedirectService.DEFAULT_ROUTE
  56   }
  57
  58   ngOnInit () {
  59     document.getElementById('incompatible-browser').className += ' browser-ok'
  60
  61     this.authService.loadClientCredentials()
  62
  63     if (this.isUserLoggedIn()) {
  64       // The service will automatically redirect to the login page if the token is not valid anymore
  65       this.authService.refreshUserInformation()
  66     }
  67
  68     // Load custom data from server
  69     this.serverService.loadConfig()
  70     this.serverService.loadVideoCategories()
  71     this.serverService.loadVideoLanguages()
  72     this.serverService.loadVideoLicences()
  73     this.serverService.loadVideoPrivacies()
  74     this.serverService.loadVideoPlaylistPrivacies()
  75
  76     this.loadPlugins()
  77     this.themeService.initialize()
  78
  79     // Do not display menu on small screens
  80     if (this.screenService.isInSmallView()) {
  81       this.isMenuDisplayed = false
  82     }
  83
  84     this.initRouteEvents()
  85     this.injectJS()
  86     this.injectCSS()
  87
  88     this.initHotkeys()
  89
  90     fromEvent(window, 'resize')
  91       .pipe(debounceTime(200))
  92       .subscribe(() => this.onResize())
  93   }
  94
  95   isUserLoggedIn () {
  96     return this.authService.isLoggedIn()
  97   }
  98
  99   toggleMenu () {
 100     this.isMenuDisplayed = !this.isMenuDisplayed
 101     this.isMenuChangedByUser = true
 102   }
 103
 104   onResize () {
 105     this.isMenuDisplayed = window.innerWidth >= 800 && !this.isMenuChangedByUser
 106   }
 107
 108   private initRouteEvents () {
 109     let resetScroll = true
 110     const eventsObs = this.router.events
 111
 112     const scrollEvent = eventsObs.pipe(filter((e: Event): e is Scroll => e instanceof Scroll))
 113     const navigationEndEvent = eventsObs.pipe(filter((e: Event): e is NavigationEnd => e instanceof NavigationEnd))
 114
 115     scrollEvent.subscribe(e => {
 116       if (e.position) {
 117         return this.viewportScroller.scrollToPosition(e.position)
 118       }
 119
 120       if (e.anchor) {
 121         return this.viewportScroller.scrollToAnchor(e.anchor)
 122       }
 123
 124       if (resetScroll) {
 125         return this.viewportScroller.scrollToPosition([ 0, 0 ])
 126       }
 127     })
 128
 129     // When we add the a-state parameter, we don't want to alter the scroll
 130     navigationEndEvent.pipe(pairwise())
 131                       .subscribe(([ e1, e2 ]) => {
 132                         try {
 133                           resetScroll = false
 134
 135                           const previousUrl = new URL(window.location.origin + e1.urlAfterRedirects)
 136                           const nextUrl = new URL(window.location.origin + e2.urlAfterRedirects)
 137
 138                           if (previousUrl.pathname !== nextUrl.pathname) {
 139                             resetScroll = true
 140                             return
 141                           }
 142
 143                           const nextSearchParams = nextUrl.searchParams
 144                           nextSearchParams.delete('a-state')
 145
 146                           const previousSearchParams = previousUrl.searchParams
 147
 148                           nextSearchParams.sort()
 149                           previousSearchParams.sort()
 150
 151                           if (nextSearchParams.toString() !== previousSearchParams.toString()) {
 152                             resetScroll = true
 153                           }
 154                         } catch (e) {
 155                           console.error('Cannot parse URL to check next scroll.', e)
 156                           resetScroll = true
 157                         }
 158                       })
 159
 160     navigationEndEvent.pipe(
 161       map(() => window.location.pathname),
 162       filter(pathname => !pathname || pathname === '/' || is18nPath(pathname))
 163     ).subscribe(() => this.redirectService.redirectToHomepage(true))
 164
 165     eventsObs.pipe(
 166       filter((e: Event): e is GuardsCheckStart => e instanceof GuardsCheckStart),
 167       filter(() => this.screenService.isInSmallView())
 168     ).subscribe(() => this.isMenuDisplayed = false) // User clicked on a link in the menu, change the page
 169   }
 170
 171   private injectJS () {
 172     // Inject JS
 173     this.serverService.configLoaded
 174         .subscribe(() => {
 175           const config = this.serverService.getConfig()
 176
 177           if (config.instance.customizations.javascript) {
 178             try {
 179               // tslint:disable:no-eval
 180               eval(config.instance.customizations.javascript)
 181             } catch (err) {
 182               console.error('Cannot eval custom JavaScript.', err)
 183             }
 184           }
 185         })
 186   }
 187
 188   private injectCSS () {
 189     // Inject CSS if modified (admin config settings)
 190     this.serverService.configLoaded
 191         .pipe(skip(1)) // We only want to subscribe to reloads, because the CSS is already injected by the server
 192         .subscribe(() => {
 193           const headStyle = document.querySelector('style.custom-css-style')
 194           if (headStyle) headStyle.parentNode.removeChild(headStyle)
 195
 196           const config = this.serverService.getConfig()
 197
 198           // We test customCSS if the admin removed the css
 199           if (this.customCSS || config.instance.customizations.css) {
 200             const styleTag = '<style>' + config.instance.customizations.css + '</style>'
 201             this.customCSS = this.domSanitizer.bypassSecurityTrustHtml(styleTag)
 202           }
 203         })
 204   }
 205
 206   private async loadPlugins () {
 207     this.pluginService.initializePlugins()
 208
 209     this.hooks.runAction('action:application.init', 'common')
 210   }
 211
 212   private initHotkeys () {
 213     this.hotkeysService.add([
 214       new Hotkey(['/', 's'], (event: KeyboardEvent): boolean => {
 215         document.getElementById('search-video').focus()
 216         return false
 217       }, undefined, this.i18n('Focus the search bar')),
 218       new Hotkey('b', (event: KeyboardEvent): boolean => {
 219         this.toggleMenu()
 220         return false
 221       }, undefined, this.i18n('Toggle the left menu')),
 222       new Hotkey('g o', (event: KeyboardEvent): boolean => {
 223         this.router.navigate([ '/videos/overview' ])
 224         return false
 225       }, undefined, this.i18n('Go to the videos overview page')),
 226       new Hotkey('g t', (event: KeyboardEvent): boolean => {
 227         this.router.navigate([ '/videos/trending' ])
 228         return false
 229       }, undefined, this.i18n('Go to the trending videos page')),
 230       new Hotkey('g r', (event: KeyboardEvent): boolean => {
 231         this.router.navigate([ '/videos/recently-added' ])
 232         return false
 233       }, undefined, this.i18n('Go to the recently added videos page')),
 234       new Hotkey('g l', (event: KeyboardEvent): boolean => {
 235         this.router.navigate([ '/videos/local' ])
 236         return false
 237       }, undefined, this.i18n('Go to the local videos page')),
 238       new Hotkey('g u', (event: KeyboardEvent): boolean => {
 239         this.router.navigate([ '/videos/upload' ])
 240         return false
 241       }, undefined, this.i18n('Go to the videos upload page'))
 242     ])
 243   }
 244 }