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 { PlatformLocation, ViewportScroller } from '@angular/common'
  12 import { PluginService } from '@app/core/plugins/plugin.service'
  13 import { HooksService } from '@app/core/plugins/hooks.service'
  14 import { NgbModal } from '@ng-bootstrap/ng-bootstrap'
  15 import { POP_STATE_MODAL_DISMISS } from '@app/shared/misc/constants'
  16
  17 @Component({
  18   selector: 'my-app',
  19   templateUrl: './app.component.html',
  20   styleUrls: [ './app.component.scss' ]
  21 })
  22 export class AppComponent implements OnInit {
  23   isMenuDisplayed = true
  24   isMenuChangedByUser = false
  25
  26   customCSS: SafeHtml
  27
  28   constructor (
  29     private i18n: I18n,
  30     private viewportScroller: ViewportScroller,
  31     private router: Router,
  32     private authService: AuthService,
  33     private serverService: ServerService,
  34     private pluginService: PluginService,
  35     private domSanitizer: DomSanitizer,
  36     private redirectService: RedirectService,
  37     private screenService: ScreenService,
  38     private hotkeysService: HotkeysService,
  39     private themeService: ThemeService,
  40     private hooks: HooksService,
  41     private location: PlatformLocation,
  42     private modalService: NgbModal
  43   ) { }
  44
  45   get serverVersion () {
  46     return this.serverService.getConfig().serverVersion
  47   }
  48
  49   get serverCommit () {
  50     const commit = this.serverService.getConfig().serverCommit || ''
  51     return (commit !== '') ? '...' + commit : commit
  52   }
  53
  54   get instanceName () {
  55     return this.serverService.getConfig().instance.name
  56   }
  57
  58   get defaultRoute () {
  59     return RedirectService.DEFAULT_ROUTE
  60   }
  61
  62   ngOnInit () {
  63     document.getElementById('incompatible-browser').className += ' browser-ok'
  64
  65     this.authService.loadClientCredentials()
  66
  67     if (this.isUserLoggedIn()) {
  68       // The service will automatically redirect to the login page if the token is not valid anymore
  69       this.authService.refreshUserInformation()
  70     }
  71
  72     // Load custom data from server
  73     this.serverService.loadConfig()
  74     this.serverService.loadVideoCategories()
  75     this.serverService.loadVideoLanguages()
  76     this.serverService.loadVideoLicences()
  77     this.serverService.loadVideoPrivacies()
  78     this.serverService.loadVideoPlaylistPrivacies()
  79
  80     this.loadPlugins()
  81     this.themeService.initialize()
  82
  83     // Do not display menu on small screens
  84     if (this.screenService.isInSmallView()) {
  85       this.isMenuDisplayed = false
  86     }
  87
  88     this.initRouteEvents()
  89     this.injectJS()
  90     this.injectCSS()
  91
  92     this.initHotkeys()
  93
  94     fromEvent(window, 'resize')
  95       .pipe(debounceTime(200))
  96       .subscribe(() => this.onResize())
  97
  98     this.location.onPopState(() => this.modalService.dismissAll(POP_STATE_MODAL_DISMISS))
  99   }
 100
 101   isUserLoggedIn () {
 102     return this.authService.isLoggedIn()
 103   }
 104
 105   toggleMenu () {
 106     this.isMenuDisplayed = !this.isMenuDisplayed
 107     this.isMenuChangedByUser = true
 108   }
 109
 110   onResize () {
 111     this.isMenuDisplayed = window.innerWidth >= 800 && !this.isMenuChangedByUser
 112   }
 113
 114   private initRouteEvents () {
 115     let resetScroll = true
 116     const eventsObs = this.router.events
 117
 118     const scrollEvent = eventsObs.pipe(filter((e: Event): e is Scroll => e instanceof Scroll))
 119
 120     scrollEvent.subscribe(e => {
 121       if (e.position) {
 122         return this.viewportScroller.scrollToPosition(e.position)
 123       }
 124
 125       if (e.anchor) {
 126         return this.viewportScroller.scrollToAnchor(e.anchor)
 127       }
 128
 129       if (resetScroll) {
 130         return this.viewportScroller.scrollToPosition([ 0, 0 ])
 131       }
 132     })
 133
 134     const navigationEndEvent = eventsObs.pipe(filter((e: Event): e is NavigationEnd => e instanceof NavigationEnd))
 135
 136     // When we add the a-state parameter, we don't want to alter the scroll
 137     navigationEndEvent.pipe(pairwise())
 138                       .subscribe(([ e1, e2 ]) => {
 139                         try {
 140                           resetScroll = false
 141
 142                           const previousUrl = new URL(window.location.origin + e1.urlAfterRedirects)
 143                           const nextUrl = new URL(window.location.origin + e2.urlAfterRedirects)
 144
 145                           if (previousUrl.pathname !== nextUrl.pathname) {
 146                             resetScroll = true
 147                             return
 148                           }
 149
 150                           const nextSearchParams = nextUrl.searchParams
 151                           nextSearchParams.delete('a-state')
 152
 153                           const previousSearchParams = previousUrl.searchParams
 154
 155                           nextSearchParams.sort()
 156                           previousSearchParams.sort()
 157
 158                           if (nextSearchParams.toString() !== previousSearchParams.toString()) {
 159                             resetScroll = true
 160                           }
 161                         } catch (e) {
 162                           console.error('Cannot parse URL to check next scroll.', e)
 163                           resetScroll = true
 164                         }
 165                       })
 166
 167     navigationEndEvent.pipe(
 168       map(() => window.location.pathname),
 169       filter(pathname => !pathname || pathname === '/' || is18nPath(pathname))
 170     ).subscribe(() => this.redirectService.redirectToHomepage(true))
 171
 172     navigationEndEvent.subscribe(e => {
 173       this.hooks.runAction('action:router.navigation-end', 'common', { path: e.url })
 174     })
 175
 176     eventsObs.pipe(
 177       filter((e: Event): e is GuardsCheckStart => e instanceof GuardsCheckStart),
 178       filter(() => this.screenService.isInSmallView())
 179     ).subscribe(() => this.isMenuDisplayed = false) // User clicked on a link in the menu, change the page
 180   }
 181
 182   private injectJS () {
 183     // Inject JS
 184     this.serverService.configLoaded
 185         .subscribe(() => {
 186           const config = this.serverService.getConfig()
 187
 188           if (config.instance.customizations.javascript) {
 189             try {
 190               // tslint:disable:no-eval
 191               eval(config.instance.customizations.javascript)
 192             } catch (err) {
 193               console.error('Cannot eval custom JavaScript.', err)
 194             }
 195           }
 196         })
 197   }
 198
 199   private injectCSS () {
 200     // Inject CSS if modified (admin config settings)
 201     this.serverService.configLoaded
 202         .pipe(skip(1)) // We only want to subscribe to reloads, because the CSS is already injected by the server
 203         .subscribe(() => {
 204           const headStyle = document.querySelector('style.custom-css-style')
 205           if (headStyle) headStyle.parentNode.removeChild(headStyle)
 206
 207           const config = this.serverService.getConfig()
 208
 209           // We test customCSS if the admin removed the css
 210           if (this.customCSS || config.instance.customizations.css) {
 211             const styleTag = '<style>' + config.instance.customizations.css + '</style>'
 212             this.customCSS = this.domSanitizer.bypassSecurityTrustHtml(styleTag)
 213           }
 214         })
 215   }
 216
 217   private async loadPlugins () {
 218     this.pluginService.initializePlugins()
 219
 220     this.hooks.runAction('action:application.init', 'common')
 221   }
 222
 223   private initHotkeys () {
 224     this.hotkeysService.add([
 225       new Hotkey(['/', 's'], (event: KeyboardEvent): boolean => {
 226         document.getElementById('search-video').focus()
 227         return false
 228       }, undefined, this.i18n('Focus the search bar')),
 229       new Hotkey('b', (event: KeyboardEvent): boolean => {
 230         this.toggleMenu()
 231         return false
 232       }, undefined, this.i18n('Toggle the left menu')),
 233       new Hotkey('g o', (event: KeyboardEvent): boolean => {
 234         this.router.navigate([ '/videos/overview' ])
 235         return false
 236       }, undefined, this.i18n('Go to the discover videos page')),
 237       new Hotkey('g t', (event: KeyboardEvent): boolean => {
 238         this.router.navigate([ '/videos/trending' ])
 239         return false
 240       }, undefined, this.i18n('Go to the trending videos page')),
 241       new Hotkey('g r', (event: KeyboardEvent): boolean => {
 242         this.router.navigate([ '/videos/recently-added' ])
 243         return false
 244       }, undefined, this.i18n('Go to the recently added videos page')),
 245       new Hotkey('g l', (event: KeyboardEvent): boolean => {
 246         this.router.navigate([ '/videos/local' ])
 247         return false
 248       }, undefined, this.i18n('Go to the local videos page')),
 249       new Hotkey('g u', (event: KeyboardEvent): boolean => {
 250         this.router.navigate([ '/videos/upload' ])
 251         return false
 252       }, undefined, this.i18n('Go to the videos upload page'))
 253     ])
 254   }
 255 }