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 { debounceTime, filter, map, pairwise } 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 import { WelcomeModalComponent } from '@app/modal/welcome-modal.component'
  17 import { InstanceConfigWarningModalComponent } from '@app/modal/instance-config-warning-modal.component'
  18 import { ServerConfig, UserRole } from '@shared/models'
  19 import { User } from '@app/shared'
  20 import { InstanceService } from '@app/shared/instance/instance.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   isMenuDisplayed = true
  32   isMenuChangedByUser = false
  33
  34   customCSS: SafeHtml
  35
  36   private serverConfig: ServerConfig
  37
  38   constructor (
  39     private i18n: I18n,
  40     private viewportScroller: ViewportScroller,
  41     private router: Router,
  42     private authService: AuthService,
  43     private serverService: ServerService,
  44     private pluginService: PluginService,
  45     private instanceService: InstanceService,
  46     private domSanitizer: DomSanitizer,
  47     private redirectService: RedirectService,
  48     private screenService: ScreenService,
  49     private hotkeysService: HotkeysService,
  50     private themeService: ThemeService,
  51     private hooks: HooksService,
  52     private location: PlatformLocation,
  53     private modalService: NgbModal
  54   ) { }
  55
  56   get instanceName () {
  57     return this.serverConfig.instance.name
  58   }
  59
  60   get defaultRoute () {
  61     return RedirectService.DEFAULT_ROUTE
  62   }
  63
  64   ngOnInit () {
  65     document.getElementById('incompatible-browser').className += ' browser-ok'
  66
  67     this.serverConfig = this.serverService.getTmpConfig()
  68     this.serverService.getConfig()
  69         .subscribe(config => this.serverConfig = config)
  70
  71     this.loadPlugins()
  72     this.themeService.initialize()
  73
  74     this.authService.loadClientCredentials()
  75
  76     if (this.isUserLoggedIn()) {
  77       // The service will automatically redirect to the login page if the token is not valid anymore
  78       this.authService.refreshUserInformation()
  79     }
  80
  81     // Do not display menu on small screens
  82     if (this.screenService.isInSmallView()) {
  83       this.isMenuDisplayed = false
  84     }
  85
  86     this.initRouteEvents()
  87     this.injectJS()
  88     this.injectCSS()
  89
  90     this.initHotkeys()
  91
  92     fromEvent(window, 'resize')
  93       .pipe(debounceTime(200))
  94       .subscribe(() => this.onResize())
  95
  96     this.location.onPopState(() => this.modalService.dismissAll(POP_STATE_MODAL_DISMISS))
  97
  98     this.openModalsIfNeeded()
  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.getConfig()
 185         .subscribe(config => {
 186           if (config.instance.customizations.javascript) {
 187             try {
 188               // tslint:disable:no-eval
 189               eval(config.instance.customizations.javascript)
 190             } catch (err) {
 191               console.error('Cannot eval custom JavaScript.', err)
 192             }
 193           }
 194         })
 195   }
 196
 197   private injectCSS () {
 198     // Inject CSS if modified (admin config settings)
 199     this.serverService.configReloaded
 200         .subscribe(() => {
 201           const headStyle = document.querySelector('style.custom-css-style')
 202           if (headStyle) headStyle.parentNode.removeChild(headStyle)
 203
 204           // We test customCSS if the admin removed the css
 205           if (this.customCSS || this.serverConfig.instance.customizations.css) {
 206             const styleTag = '<style>' + this.serverConfig.instance.customizations.css + '</style>'
 207             this.customCSS = this.domSanitizer.bypassSecurityTrustHtml(styleTag)
 208           }
 209         })
 210   }
 211
 212   private async loadPlugins () {
 213     this.pluginService.initializePlugins()
 214
 215     this.hooks.runAction('action:application.init', 'common')
 216   }
 217
 218   private async openModalsIfNeeded () {
 219     this.authService.userInformationLoaded
 220         .pipe(
 221           map(() => this.authService.getUser()),
 222           filter(user => user.role === UserRole.ADMINISTRATOR)
 223         ).subscribe(user => setTimeout(() => this._openAdminModalsIfNeeded(user))) // setTimeout because of ngIf in template
 224   }
 225
 226   private async _openAdminModalsIfNeeded (user: User) {
 227     if (user.noWelcomeModal !== true) return this.welcomeModal.show()
 228
 229     if (user.noInstanceConfigWarningModal === true || !this.serverConfig.signup.allowed) return
 230
 231     this.instanceService.getAbout()
 232       .subscribe(about => {
 233         if (
 234           this.serverConfig.instance.name.toLowerCase() === 'peertube' ||
 235           !about.instance.terms ||
 236           !about.instance.administrator ||
 237           !about.instance.maintenanceLifetime
 238         ) {
 239           this.instanceConfigWarningModal.show(about)
 240         }
 241       })
 242   }
 243
 244   private initHotkeys () {
 245     this.hotkeysService.add([
 246       new Hotkey(['/', 's'], (event: KeyboardEvent): boolean => {
 247         document.getElementById('search-video').focus()
 248         return false
 249       }, undefined, this.i18n('Focus the search bar')),
 250
 251       new Hotkey('b', (event: KeyboardEvent): boolean => {
 252         this.toggleMenu()
 253         return false
 254       }, undefined, this.i18n('Toggle the left menu')),
 255
 256       new Hotkey('g o', (event: KeyboardEvent): boolean => {
 257         this.router.navigate([ '/videos/overview' ])
 258         return false
 259       }, undefined, this.i18n('Go to the discover videos page')),
 260
 261       new Hotkey('g t', (event: KeyboardEvent): boolean => {
 262         this.router.navigate([ '/videos/trending' ])
 263         return false
 264       }, undefined, this.i18n('Go to the trending videos page')),
 265
 266       new Hotkey('g r', (event: KeyboardEvent): boolean => {
 267         this.router.navigate([ '/videos/recently-added' ])
 268         return false
 269       }, undefined, this.i18n('Go to the recently added videos page')),
 270
 271       new Hotkey('g l', (event: KeyboardEvent): boolean => {
 272         this.router.navigate([ '/videos/local' ])
 273         return false
 274       }, undefined, this.i18n('Go to the local videos page')),
 275
 276       new Hotkey('g u', (event: KeyboardEvent): boolean => {
 277         this.router.navigate([ '/videos/upload' ])
 278         return false
 279       }, undefined, this.i18n('Go to the videos upload page'))
 280     ])
 281   }
 282 }