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 INIT_DEFAULT_TRENDING_ALGORITHM = 'most-viewed'
  10
  11   private previousUrl: string
  12   private currentUrl: string
  13
  14   private redirectingToHomepage = false
  15   private defaultTrendingAlgorithm = RedirectService.INIT_DEFAULT_TRENDING_ALGORITHM
  16   private defaultRoute = RedirectService.INIT_DEFAULT_ROUTE
  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 config = this.serverService.getHTMLConfig()
  24     if (config?.instance?.defaultClientRoute) {
  25       this.defaultRoute = config.instance.defaultClientRoute
  26     }
  27     if (config?.trending?.videos?.algorithms?.default) {
  28       this.defaultTrendingAlgorithm = config.trending.videos.algorithms.default
  29     }
  30
  31     // Track previous url
  32     this.currentUrl = this.router.url
  33     router.events.subscribe(event => {
  34       if (event instanceof NavigationEnd || event instanceof NavigationCancel) {
  35         this.previousUrl = this.currentUrl
  36         this.currentUrl = event.url
  37       }
  38     })
  39   }
  40
  41   getDefaultRoute () {
  42     return this.defaultRoute
  43   }
  44
  45
  46   getDefaultTrendingAlgorithm () {
  47     return this.defaultTrendingAlgorithm
  48   }
  49
  50   redirectToPreviousRoute () {
  51     const exceptions = [
  52       '/verify-account',
  53       '/reset-password'
  54     ]
  55
  56     if (this.previousUrl) {
  57       const isException = exceptions.find(e => this.previousUrl.startsWith(e))
  58       if (!isException) return this.router.navigateByUrl(this.previousUrl)
  59     }
  60
  61     return this.redirectToHomepage()
  62   }
  63
  64   redirectToHomepage (skipLocationChange = false) {
  65     if (this.redirectingToHomepage) return
  66
  67     this.redirectingToHomepage = true
  68
  69     console.log('Redirecting to %s...', this.defaultRoute)
  70
  71     this.router.navigateByUrl(this.defaultRoute, { skipLocationChange })
  72         .then(() => this.redirectingToHomepage = false)
  73         .catch(() => {
  74           this.redirectingToHomepage = false
  75
  76           console.error(
  77             'Cannot navigate to %s, resetting default route to %s.',
  78             this.defaultRoute,
  79             RedirectService.INIT_DEFAULT_ROUTE
  80           )
  81
  82           this.defaultRoute = RedirectService.INIT_DEFAULT_ROUTE
  83           return this.router.navigateByUrl(this.defaultRoute, { skipLocationChange })
  84         })
  85
  86   }
  87 }