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   getDefaultTrendingAlgorithm () {
  46     return this.defaultTrendingAlgorithm
  47   }
  48
  49   redirectToPreviousRoute () {
  50     const exceptions = [
  51       '/verify-account',
  52       '/reset-password'
  53     ]
  54
  55     if (this.previousUrl) {
  56       const isException = exceptions.find(e => this.previousUrl.startsWith(e))
  57       if (!isException) return this.router.navigateByUrl(this.previousUrl)
  58     }
  59
  60     return this.redirectToHomepage()
  61   }
  62
  63   redirectToHomepage (skipLocationChange = false) {
  64     if (this.redirectingToHomepage) return
  65
  66     this.redirectingToHomepage = true
  67
  68     console.log('Redirecting to %s...', this.defaultRoute)
  69
  70     this.router.navigateByUrl(this.defaultRoute, { skipLocationChange })
  71         .then(() => this.redirectingToHomepage = false)
  72         .catch(() => {
  73           this.redirectingToHomepage = false
  74
  75           console.error(
  76             'Cannot navigate to %s, resetting default route to %s.',
  77             this.defaultRoute,
  78             RedirectService.INIT_DEFAULT_ROUTE
  79           )
  80
  81           this.defaultRoute = RedirectService.INIT_DEFAULT_ROUTE
  82           return this.router.navigateByUrl(this.defaultRoute, { skipLocationChange })
  83         })
  84
  85   }
  86 }