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

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