client/src/app/app.component.ts

   1 import { Component, OnInit, ViewChild } 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 { filter, map, pairwise } from 'rxjs/operators'
   8 import { Hotkey, HotkeysService } from 'angular2-hotkeys'
   9 import { I18n } from '@ngx-translate/i18n-polyfill'
  10 import { PlatformLocation, ViewportScroller } from '@angular/common'
  11 import { PluginService } from '@app/core/plugins/plugin.service'
  12 import { HooksService } from '@app/core/plugins/hooks.service'
  13 import { NgbModal } from '@ng-bootstrap/ng-bootstrap'
  14 import { POP_STATE_MODAL_DISMISS } from '@app/shared/misc/constants'
  15 import { WelcomeModalComponent } from '@app/modal/welcome-modal.component'
  16 import { InstanceConfigWarningModalComponent } from '@app/modal/instance-config-warning-modal.component'
  17 import { ServerConfig, UserRole } from '@shared/models'
  18 import { User } from '@app/shared'
  19 import { InstanceService } from '@app/shared/instance/instance.service'
  20 import { MenuService } from './core/menu/menu.service'
  21
  22 @Component({
  23   selector: 'my-app',
  24   templateUrl: './app.component.html',
  25   styleUrls: [ './app.component.scss' ]
  26 })
  27 export class AppComponent implements OnInit {
  28   @ViewChild('welcomeModal') welcomeModal: WelcomeModalComponent
  29   @ViewChild('instanceConfigWarningModal') instanceConfigWarningModal: InstanceConfigWarningModalComponent
  30
  31   customCSS: SafeHtml
  32
  33   private serverConfig: ServerConfig
  34
  35   constructor (
  36     private i18n: I18n,
  37     private viewportScroller: ViewportScroller,
  38     private router: Router,
  39     private authService: AuthService,
  40     private serverService: ServerService,
  41     private pluginService: PluginService,
  42     private instanceService: InstanceService,
  43     private domSanitizer: DomSanitizer,
  44     private redirectService: RedirectService,
  45     private screenService: ScreenService,
  46     private hotkeysService: HotkeysService,
  47     private themeService: ThemeService,
  48     private hooks: HooksService,
  49     private location: PlatformLocation,
  50     private modalService: NgbModal,
  51     public menu: MenuService
  52   ) { }
  53
  54   get instanceName () {
  55     return this.serverConfig.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.serverConfig = this.serverService.getTmpConfig()
  66     this.serverService.getConfig()
  67         .subscribe(config => this.serverConfig = config)
  68
  69     this.loadPlugins()
  70     this.themeService.initialize()
  71
  72     this.authService.loadClientCredentials()
  73
  74     if (this.isUserLoggedIn()) {
  75       // The service will automatically redirect to the login page if the token is not valid anymore
  76       this.authService.refreshUserInformation()
  77     }
  78
  79     this.initRouteEvents()
  80     this.injectJS()
  81     this.injectCSS()
  82
  83     this.initHotkeys()
  84
  85     this.location.onPopState(() => this.modalService.dismissAll(POP_STATE_MODAL_DISMISS))
  86
  87     this.openModalsIfNeeded()
  88   }
  89
  90   isUserLoggedIn () {
  91     return this.authService.isLoggedIn()
  92   }
  93
  94   private initRouteEvents () {
  95     let resetScroll = true
  96     const eventsObs = this.router.events
  97
  98     const scrollEvent = eventsObs.pipe(filter((e: Event): e is Scroll => e instanceof Scroll))
  99
 100     scrollEvent.subscribe(e => {
 101       if (e.position) {
 102         return this.viewportScroller.scrollToPosition(e.position)
 103       }
 104
 105       if (e.anchor) {
 106         return this.viewportScroller.scrollToAnchor(e.anchor)
 107       }
 108
 109       if (resetScroll) {
 110         return this.viewportScroller.scrollToPosition([ 0, 0 ])
 111       }
 112     })
 113
 114     const navigationEndEvent = eventsObs.pipe(filter((e: Event): e is NavigationEnd => e instanceof NavigationEnd))
 115
 116     // When we add the a-state parameter, we don't want to alter the scroll
 117     navigationEndEvent.pipe(pairwise())
 118                       .subscribe(([ e1, e2 ]) => {
 119                         try {
 120                           resetScroll = false
 121
 122                           const previousUrl = new URL(window.location.origin + e1.urlAfterRedirects)
 123                           const nextUrl = new URL(window.location.origin + e2.urlAfterRedirects)
 124
 125                           if (previousUrl.pathname !== nextUrl.pathname) {
 126                             resetScroll = true
 127                             return
 128                           }
 129
 130                           const nextSearchParams = nextUrl.searchParams
 131                           nextSearchParams.delete('a-state')
 132
 133                           const previousSearchParams = previousUrl.searchParams
 134
 135                           nextSearchParams.sort()
 136                           previousSearchParams.sort()
 137
 138                           if (nextSearchParams.toString() !== previousSearchParams.toString()) {
 139                             resetScroll = true
 140                           }
 141                         } catch (e) {
 142                           console.error('Cannot parse URL to check next scroll.', e)
 143                           resetScroll = true
 144                         }
 145                       })
 146
 147     navigationEndEvent.pipe(
 148       map(() => window.location.pathname),
 149       filter(pathname => !pathname || pathname === '/' || is18nPath(pathname))
 150     ).subscribe(() => this.redirectService.redirectToHomepage(true))
 151
 152     navigationEndEvent.subscribe(e => {
 153       this.hooks.runAction('action:router.navigation-end', 'common', { path: e.url })
 154     })
 155
 156     eventsObs.pipe(
 157       filter((e: Event): e is GuardsCheckStart => e instanceof GuardsCheckStart),
 158       filter(() => this.screenService.isInSmallView())
 159     ).subscribe(() => this.menu.isMenuDisplayed = false) // User clicked on a link in the menu, change the page
 160   }
 161
 162   private injectJS () {
 163     // Inject JS
 164     this.serverService.getConfig()
 165         .subscribe(config => {
 166           if (config.instance.customizations.javascript) {
 167             try {
 168               // tslint:disable:no-eval
 169               eval(config.instance.customizations.javascript)
 170             } catch (err) {
 171               console.error('Cannot eval custom JavaScript.', err)
 172             }
 173           }
 174         })
 175   }
 176
 177   private injectCSS () {
 178     // Inject CSS if modified (admin config settings)
 179     this.serverService.configReloaded
 180         .subscribe(() => {
 181           const headStyle = document.querySelector('style.custom-css-style')
 182           if (headStyle) headStyle.parentNode.removeChild(headStyle)
 183
 184           // We test customCSS if the admin removed the css
 185           if (this.customCSS || this.serverConfig.instance.customizations.css) {
 186             const styleTag = '<style>' + this.serverConfig.instance.customizations.css + '</style>'
 187             this.customCSS = this.domSanitizer.bypassSecurityTrustHtml(styleTag)
 188           }
 189         })
 190   }
 191
 192   private async loadPlugins () {
 193     this.pluginService.initializePlugins()
 194
 195     this.hooks.runAction('action:application.init', 'common')
 196   }
 197
 198   private async openModalsIfNeeded () {
 199     this.authService.userInformationLoaded
 200         .pipe(
 201           map(() => this.authService.getUser()),
 202           filter(user => user.role === UserRole.ADMINISTRATOR)
 203         ).subscribe(user => setTimeout(() => this._openAdminModalsIfNeeded(user))) // setTimeout because of ngIf in template
 204   }
 205
 206   private async _openAdminModalsIfNeeded (user: User) {
 207     if (user.noWelcomeModal !== true) return this.welcomeModal.show()
 208
 209     if (user.noInstanceConfigWarningModal === true || !this.serverConfig.signup.allowed) return
 210
 211     this.instanceService.getAbout()
 212       .subscribe(about => {
 213         if (
 214           this.serverConfig.instance.name.toLowerCase() === 'peertube' ||
 215           !about.instance.terms ||
 216           !about.instance.administrator ||
 217           !about.instance.maintenanceLifetime
 218         ) {
 219           this.instanceConfigWarningModal.show(about)
 220         }
 221       })
 222   }
 223
 224   private initHotkeys () {
 225     this.hotkeysService.add([
 226       new Hotkey(['/', 's'], (event: KeyboardEvent): boolean => {
 227         document.getElementById('search-video').focus()
 228         return false
 229       }, undefined, this.i18n('Focus the search bar')),
 230
 231       new Hotkey('b', (event: KeyboardEvent): boolean => {
 232         this.menu.toggleMenu()
 233         return false
 234       }, undefined, this.i18n('Toggle the left menu')),
 235
 236       new Hotkey('g o', (event: KeyboardEvent): boolean => {
 237         this.router.navigate([ '/videos/overview' ])
 238         return false
 239       }, undefined, this.i18n('Go to the discover videos page')),
 240
 241       new Hotkey('g t', (event: KeyboardEvent): boolean => {
 242         this.router.navigate([ '/videos/trending' ])
 243         return false
 244       }, undefined, this.i18n('Go to the trending videos page')),
 245
 246       new Hotkey('g r', (event: KeyboardEvent): boolean => {
 247         this.router.navigate([ '/videos/recently-added' ])
 248         return false
 249       }, undefined, this.i18n('Go to the recently added videos page')),
 250
 251       new Hotkey('g l', (event: KeyboardEvent): boolean => {
 252         this.router.navigate([ '/videos/local' ])
 253         return false
 254       }, undefined, this.i18n('Go to the local videos page')),
 255
 256       new Hotkey('g u', (event: KeyboardEvent): boolean => {
 257         this.router.navigate([ '/videos/upload' ])
 258         return false
 259       }, undefined, this.i18n('Go to the videos upload page'))
 260     ])
 261   }
 262 }