client/src/app/+search/shared/abstract-lazy-load.resolver.ts

   1 import { Observable } from 'rxjs'
   2 import { map } from 'rxjs/operators'
   3 import { ActivatedRouteSnapshot, Router } from '@angular/router'
   4 import { logger } from '@root-helpers/logger'
   5 import { ResultList } from '@shared/models'
   6
   7 export abstract class AbstractLazyLoadResolver <T>  {
   8   protected router: Router
   9
  10   resolve (route: ActivatedRouteSnapshot) {
  11     const url = route.params.url
  12
  13     if (!url) {
  14       logger.error('Could not find url param.', { params: route.params })
  15       return this.router.navigateByUrl('/404')
  16     }
  17
  18     return this.finder(url)
  19       .pipe(
  20         map(result => {
  21           if (result.data.length !== 1) {
  22             logger.error('Cannot find result for this URL')
  23             return this.router.navigateByUrl('/404')
  24           }
  25
  26           const redirectUrl = this.buildUrl(result.data[0])
  27
  28           return this.router.navigateByUrl(redirectUrl)
  29         })
  30       )
  31   }
  32
  33   protected abstract finder (url: string): Observable<ResultList<T>>
  34   protected abstract buildUrl (e: T): string
  35 }