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


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import { Injectable } from '@angular/core'
import { Router } from '@angular/router'
import { ServerService } from '../server'

@Injectable()
export class RedirectService {
  // Default route could change according to the instance configuration
  static INIT_DEFAULT_ROUTE = '/videos/trending'
  static DEFAULT_ROUTE = RedirectService.INIT_DEFAULT_ROUTE

  constructor (
    private router: Router,
    private serverService: ServerService
  ) {
    // The config is first loaded from the cache so try to get the default route
    const config = this.serverService.getConfig()
    if (config && config.instance && config.instance.defaultClientRoute) {
      RedirectService.DEFAULT_ROUTE = config.instance.defaultClientRoute
    }

    this.serverService.configLoaded
        .subscribe(() => {
          const defaultRouteConfig = this.serverService.getConfig().instance.defaultClientRoute

          if (defaultRouteConfig) {
            RedirectService.DEFAULT_ROUTE = defaultRouteConfig
          }
        })
  }

  redirectToHomepage () {
    console.log('Redirecting to %s...', RedirectService.DEFAULT_ROUTE)

    this.router.navigate([ RedirectService.DEFAULT_ROUTE ], { replaceUrl: true })
        .catch(() => {
          console.error(
            'Cannot navigate to %s, resetting default route to %s.',
            RedirectService.DEFAULT_ROUTE,
            RedirectService.INIT_DEFAULT_ROUTE
          )

          RedirectService.DEFAULT_ROUTE = RedirectService.INIT_DEFAULT_ROUTE
          return this.router.navigate([ RedirectService.DEFAULT_ROUTE ], { replaceUrl: true })
        })

  }
}