client/src/app/core/routing/redirect.service.ts

   1 import { Injectable } from '@angular/core'
   2 import { NavigationCancel, NavigationEnd, Router } from '@angular/router'
   3 import { ServerService } from '../server'
   4
   5 @Injectable()
   6 export class RedirectService {
   7   // Default route could change according to the instance configuration
   8   static INIT_DEFAULT_ROUTE = '/videos/trending'
   9   static DEFAULT_ROUTE = RedirectService.INIT_DEFAULT_ROUTE
  10   static INIT_DEFAULT_TRENDING_ALGORITHM = 'most-viewed'
  11   static DEFAULT_TRENDING_ALGORITHM = RedirectService.INIT_DEFAULT_TRENDING_ALGORITHM
  12
  13   private previousUrl: string
  14   private currentUrl: string
  15
  16   private redirectingToHomepage = false
  17
  18   constructor (
  19     private router: Router,
  20     private serverService: ServerService
  21   ) {
  22     // The config is first loaded from the cache so try to get the default route
  23     const tmpConfig = this.serverService.getTmpConfig()
  24     if (tmpConfig?.instance?.defaultClientRoute) {
  25       RedirectService.DEFAULT_ROUTE = tmpConfig.instance.defaultClientRoute
  26     }
  27     if (tmpConfig?.trending?.videos?.algorithms?.default) {
  28       RedirectService.DEFAULT_TRENDING_ALGORITHM = tmpConfig.trending.videos.algorithms.default
  29     }
  30
  31     // Load default route
  32     this.serverService.getConfig()
  33         .subscribe(config => {
  34           const defaultRouteConfig = config.instance.defaultClientRoute
  35           const defaultTrendingConfig = config.trending.videos.algorithms.default
  36
  37           if (defaultRouteConfig) {
  38             RedirectService.DEFAULT_ROUTE = defaultRouteConfig
  39           }
  40
  41           if (defaultTrendingConfig) {
  42             RedirectService.DEFAULT_TRENDING_ALGORITHM = defaultTrendingConfig
  43           }
  44         })
  45
  46     // Track previous url
  47     this.currentUrl = this.router.url
  48     router.events.subscribe(event => {
  49       if (event instanceof NavigationEnd || event instanceof NavigationCancel) {
  50         this.previousUrl = this.currentUrl
  51         this.currentUrl = event.url
  52       }
  53     })
  54   }
  55
  56   redirectToPreviousRoute () {
  57     const exceptions = [
  58       '/verify-account',
  59       '/reset-password'
  60     ]
  61
  62     if (this.previousUrl) {
  63       const isException = exceptions.find(e => this.previousUrl.startsWith(e))
  64       if (!isException) return this.router.navigateByUrl(this.previousUrl)
  65     }
  66
  67     return this.redirectToHomepage()
  68   }
  69
  70   redirectToHomepage (skipLocationChange = false) {
  71     if (this.redirectingToHomepage) return
  72
  73     this.redirectingToHomepage = true
  74
  75     console.log('Redirecting to %s...', RedirectService.DEFAULT_ROUTE)
  76
  77     this.router.navigateByUrl(RedirectService.DEFAULT_ROUTE, { skipLocationChange })
  78         .then(() => this.redirectingToHomepage = false)
  79         .catch(() => {
  80           this.redirectingToHomepage = false
  81
  82           console.error(
  83             'Cannot navigate to %s, resetting default route to %s.',
  84             RedirectService.DEFAULT_ROUTE,
  85             RedirectService.INIT_DEFAULT_ROUTE
  86           )
  87
  88           RedirectService.DEFAULT_ROUTE = RedirectService.INIT_DEFAULT_ROUTE
  89           return this.router.navigateByUrl(RedirectService.DEFAULT_ROUTE, { skipLocationChange })
  90         })
  91
  92   }
  93 }