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   constructor (
  15     private router: Router,
  16     private serverService: ServerService
  17   ) {
  18     // The config is first loaded from the cache so try to get the default route
  19     const config = this.serverService.getConfig()
  20     if (config && config.instance && config.instance.defaultClientRoute) {
  21       RedirectService.DEFAULT_ROUTE = config.instance.defaultClientRoute
  22     }
  23
  24     // Load default route
  25     this.serverService.configLoaded
  26         .subscribe(() => {
  27           const defaultRouteConfig = this.serverService.getConfig().instance.defaultClientRoute
  28
  29           if (defaultRouteConfig) {
  30             RedirectService.DEFAULT_ROUTE = defaultRouteConfig
  31           }
  32         })
  33
  34     // Track previous url
  35     this.currentUrl = this.router.url
  36     router.events.subscribe(event => {
  37       if (event instanceof NavigationEnd) {
  38         this.previousUrl = this.currentUrl
  39         this.currentUrl = event.url
  40       }
  41     })
  42   }
  43
  44   redirectToPreviousRoute () {
  45     if (this.previousUrl) return this.router.navigateByUrl(this.previousUrl)
  46
  47     return this.redirectToHomepage()
  48   }
  49
  50   redirectToHomepage (skipLocationChange = false) {
  51     console.log('Redirecting to %s...', RedirectService.DEFAULT_ROUTE)
  52
  53     this.router.navigate([ RedirectService.DEFAULT_ROUTE ], { skipLocationChange })
  54         .catch(() => {
  55           console.error(
  56             'Cannot navigate to %s, resetting default route to %s.',
  57             RedirectService.DEFAULT_ROUTE,
  58             RedirectService.INIT_DEFAULT_ROUTE
  59           )
  60
  61           RedirectService.DEFAULT_ROUTE = RedirectService.INIT_DEFAULT_ROUTE
  62           return this.router.navigate([ RedirectService.DEFAULT_ROUTE ], { skipLocationChange })
  63         })
  64
  65   }
  66 }