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