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