client/src/app/+about/about-instance/about-instance.resolver.ts

   1 import { Injectable } from '@angular/core'
   2 import { ActivatedRouteSnapshot, Resolve } from '@angular/router'
   3 import { map, switchMap } from 'rxjs/operators'
   4 import { forkJoin } from 'rxjs'
   5 import { InstanceService } from '@app/shared/instance/instance.service'
   6 import { About } from '@shared/models/server'
   7
   8 export type ResolverData = { about: About, languages: string[], categories: string[] }
   9
  10 @Injectable()
  11 export class AboutInstanceResolver implements Resolve<any> {
  12   constructor (
  13     private instanceService: InstanceService
  14   ) {}
  15
  16   resolve (route: ActivatedRouteSnapshot) {
  17     return this.instanceService.getAbout()
  18                .pipe(
  19                  switchMap(about => {
  20                    return forkJoin([
  21                      this.instanceService.buildTranslatedLanguages(about),
  22                      this.instanceService.buildTranslatedCategories(about)
  23                    ]).pipe(map(([ languages, categories ]) => ({ about, languages, categories })))
  24                  })
  25                )
  26   }
  27 }