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 tmpConfig = this.serverService.getTmpConfig()
  24     if (tmpConfig?.instance?.defaultClientRoute) {
  25       this.defaultRoute = tmpConfig.instance.defaultClientRoute
  26     }
  27     if (tmpConfig?.trending?.videos?.algorithms?.default) {
  28       this.defaultTrendingAlgorithm = 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) this.defaultRoute = defaultRouteConfig
  38           if (defaultTrendingConfig) this.defaultTrendingAlgorithm = defaultTrendingConfig
  39         })
  40
  41     // Track previous url
  42     this.currentUrl = this.router.url
  43     router.events.subscribe(event => {
  44       if (event instanceof NavigationEnd || event instanceof NavigationCancel) {
  45         this.previousUrl = this.currentUrl
  46         this.currentUrl = event.url
  47       }
  48     })
  49   }
  50
  51   getDefaultRoute () {
  52     return this.defaultRoute
  53   }
  54
  55   getDefaultTrendingAlgorithm () {
  56     return this.defaultTrendingAlgorithm
  57   }
  58
  59   redirectToPreviousRoute () {
  60     const exceptions = [
  61       '/verify-account',
  62       '/reset-password'
  63     ]
  64
  65     if (this.previousUrl) {
  66       const isException = exceptions.find(e => this.previousUrl.startsWith(e))
  67       if (!isException) return this.router.navigateByUrl(this.previousUrl)
  68     }
  69
  70     return this.redirectToHomepage()
  71   }
  72
  73   redirectToHomepage (skipLocationChange = false) {
  74     if (this.redirectingToHomepage) return
  75
  76     this.redirectingToHomepage = true
  77
  78     console.log('Redirecting to %s...', this.defaultRoute)
  79
  80     this.router.navigateByUrl(this.defaultRoute, { skipLocationChange })
  81         .then(() => this.redirectingToHomepage = false)
  82         .catch(() => {
  83           this.redirectingToHomepage = false
  84
  85           console.error(
  86             'Cannot navigate to %s, resetting default route to %s.',
  87             this.defaultRoute,
  88             RedirectService.INIT_DEFAULT_ROUTE
  89           )
  90
  91           this.defaultRoute = RedirectService.INIT_DEFAULT_ROUTE
  92           return this.router.navigateByUrl(this.defaultRoute, { skipLocationChange })
  93         })
  94
  95   }
  96 }